2026-10-10T19:33:50Z https://njump.me Freya Blekman https://njump.me/npub1tl63l4g5p9ed5vtt7fc8emxlp7ws8uvq7m7sej9ezlvdzw2yl2asvavd6y https://fediscience.org/system/accounts/avatars/114/499/270/459/969/454/original/22928cb5bba6e9d2.jpeg https://fediscience.org/system/accounts/avatars/114/499/270/459/969/454/original/22928cb5bba6e9d2.jpeg https://njump.me/nevent1qqsxuc5rszvtdhu5akssn9wcjx3u52986xvln63dzu7k7pkfcna4daqzyp0l2874zsyh9k33d0e8ql8vmu8e6ql3srm06rxghyta35fegnatklpapj4 Visiting ATLAS <span itemprop="mentions" itemscope itemtype="https://schema.org/Person"><a itemprop="url" href="/nprofile1qy2hwumn8ghj7un9d3shjtnyd968gmewwp6kyqpq433q4s4dsd7qxz264xgndnvps3tq0mmqn2hnurpnaf9g73u6eapqg3hs6u" class="bg-lavender dark:prose:text-neutral-50 dark:text-neutral-50 dark:bg-garnet px-1"><span>nprofile1qy2hwumn8ghj7un9d3shjtnyd968gmewwp6kyqpq433q4s4dsd7qxz264xgndnvps3tq0mmqn2hnurpnaf9g73u6eapqg3hs6u</span> (<span class="italic">nprofile…hs6u</span>)</a></span> today (thank you ATLAS outreach team and Connie Potter for your help booking the tour)<br/><br/> <img src="https://fediscience.org/system/media_attachments/files/117/415/767/198/278/501/original/22e96b20a231da2c.png"> 2026-10-10T08:53:52Z https://njump.me/nevent1qqs0xlt0mxhzlx0dtezuz7rfncrqth9p49nvwt5acd4pqe9n3pjys2czyp0l2874zsyh9k33d0e8ql8vmu8e6ql3srm06rxghyta35fegnatkp7qa9d This time in random gear I found on campus: the monochromator that was used to make the first x ray photo with an accelerator!<br/><br/>You’ve probably seen a prism split light into a rainbow. X-rays can be split the same way with a crystal monochromator instead of glass.<br/><br/>In August 1970, right here at DESY, physicists Gerd Rosenbaum, Kenneth Holmes and Jean Witz fitted a quartz crystal monochromator onto our synchrotron beam and captured the first-ever X-ray diffraction picture using synchrotron radiation: of a strip of insect flight muscle. That first smudgy image kicked off the entire field of using particle accelerators for structural biology, and eventually gave DESY its own EMBL outstation.<br/><br/>The antique monochromator in this video is a real piece of that history.<br/><br/><video controls width="100%" class="max-h-[90vh] bg-neutral-300 dark:bg-zinc-700"><source src="https://fediscience.org/system/media_attachments/files/116/923/929/549/840/560/original/5a9cc5a1509c514e.mp4"></video> 2026-07-15T12:15:26Z https://njump.me/nevent1qqs8namah69nc3v77d0efef7n6sl9qd6gnc298unprdagzfu6l43g9gzyp0l2874zsyh9k33d0e8ql8vmu8e6ql3srm06rxghyta35fegnatk7mezxg This week I am in #stockholm at the #cometa @multibosons European research network. Yesterday I gave a talk for the general public about the large hadron collider, particle physics and the Nobel prize (and I gave a talk for scientists today).<br/><br/><video controls width="100%" class="max-h-[90vh] bg-neutral-300 dark:bg-zinc-700"><source src="https://fediscience.org/system/media_attachments/files/116/680/698/471/925/964/original/b02160fda66770ff.mp4"></video> 2026-06-02T13:16:06Z https://njump.me/nevent1qqsyys4euez9m82aaje4ehx68802c5a9ljdnvqvjgpcc39g7tnqcsmszyp0l2874zsyh9k33d0e8ql8vmu8e6ql3srm06rxghyta35fegnatk34hk4r Imposter syndrome doesn’t mean you don’t belong. It often means the opposite, that you care deeply about what you do.<br/>I asked my colleagues to join me, because many of the most accomplished, world-leading scientists have felt like “frauds” at times. <br/><br/>#academia #impostersyndrome #physics<br/><br/><video controls width="100%" class="max-h-[90vh] bg-neutral-300 dark:bg-zinc-700"><source src="https://fediscience.org/system/media_attachments/files/116/676/105/585/847/282/original/f58e78076940fb91.mp4"></video> 2026-06-01T17:48:07Z https://njump.me/nevent1qqs8dd3z2qs79rt2wur9nhaz8ght3dqtyd9myatwmdhp8ah6m2wgtcqzyp0l2874zsyh9k33d0e8ql8vmu8e6ql3srm06rxghyta35fegnatkqyrjvf The LHC colllides protons, and protons contain quarks (and gluons). Almost all collisions involve only one quark (or gluon) from each proton, but the super-rare collisions where two particles in the one proton collide simultaneously with two particles in another proton <a href="https://arxiv.org/abs/2602.02770">https://arxiv.org/abs/2602.02770</a><br/><br/> <img src="https://fediscience.org/system/media_attachments/files/116/667/816/460/532/565/original/19f5d244871c4c71.png"> 2026-05-31T06:40:03Z https://njump.me/nevent1qqswej557jttwmztt5hqcva4zylxucf76r0ftxk444685np7qrkk3mczyp0l2874zsyh9k33d0e8ql8vmu8e6ql3srm06rxghyta35fegnatkkyyq26 Tonight (and on 5 June): Short #films at @follow.desy with the theme “A wall is a screen” @awallisascreen @kurzfilm_hamburg<br/><br/><video controls width="100%" class="max-h-[90vh] bg-neutral-300 dark:bg-zinc-700"><source src="https://fediscience.org/system/media_attachments/files/116/580/198/004/672/134/original/b90d940be1698cba.mp4"></video> 2026-05-15T19:17:48Z https://njump.me/nevent1qqsplp5cqzhsecmcpew6zqhqz6hmx0k9t089tytkx77505szw506dxszyp0l2874zsyh9k33d0e8ql8vmu8e6ql3srm06rxghyta35fegnatkkpdff0 The Higgs field has links to the evolution of the universe. And di-Higgs production is one of the most important ways to measure it in the coming years, and this #CMSPaper summarises where ATLAS and CMS together (yes, together 🤲) stand with the data collected up to 2018 <a href="https://arxiv.org/abs/2602.23991">https://arxiv.org/abs/2602.23991</a><br/><br/> <img src="https://fediscience.org/system/media_attachments/files/116/579/225/013/290/768/original/54ea6a33e3b0f77a.png"> 2026-05-15T15:10:04Z https://njump.me/nevent1qqsfyfcxflswv0pucf7c7t36c7gxn49zf0y87jqc9r8tcuvty5ev8wqzyp0l2874zsyh9k33d0e8ql8vmu8e6ql3srm06rxghyta35fegnatk85hst8 The LHC colllides protons, and protons contain quarks (and gluons). Almost all collisions involve only one quark (or gluon) from each proton, but the super-rare collisions where two particles in the one proton collide simultaneously with two particles in another proton <a href="https://arxiv.org/abs/2602.02770">https://arxiv.org/abs/2602.02770</a><br/><br/> <img src="https://fediscience.org/system/media_attachments/files/116/579/051/948/230/676/original/d85f68380c6b2e5c.png"> 2026-05-15T14:26:04Z https://njump.me/nevent1qqs0xs3tznh8ymrtms3k4clwa7v6wsydlwej03wp9dr69kfum0llxeszyp0l2874zsyh9k33d0e8ql8vmu8e6ql3srm06rxghyta35fegnatk45hjmt Imposter syndrome doesn’t mean you don’t belong. It often means the opposite, that you care deeply about what you do.<br/>I asked my colleagues to join me, because many of the most accomplished, world-leading scientists have felt like “frauds” at times. <br/><br/>The difference? They don&#39;t let that feeling define them, and often even learn how to use it to their advantage<br/><br/>Check out this video for a few hard-earned tips from people at the very top
<br/>#academia #impostersyndrome #physics <span itemprop="mentions" itemscope itemtype="https://schema.org/Person"><a itemprop="url" href="/nprofile1qy2hwumn8ghj7un9d3shjtnyd968gmewwp6kyqpqh3nz46qlaquja9md8j5vzm9thsdderrt2zl7cepurqjlra6ahees57gpkw" class="bg-lavender dark:prose:text-neutral-50 dark:text-neutral-50 dark:bg-garnet px-1"><span>nprofile1qy2hwumn8ghj7un9d3shjtnyd968gmewwp6kyqpqh3nz46qlaquja9md8j5vzm9thsdderrt2zl7cepurqjlra6ahees57gpkw</span> (<span class="italic">nprofile…gpkw</span>)</a></span> <span itemprop="mentions" itemscope itemtype="https://schema.org/Person"><a itemprop="url" href="/nprofile1qy2hwumn8ghj7un9d3shjtnyd968gmewwp6kyqpqv9uf6hjlxgxf8qjawupggx7ucysfqeprlmygmhuytmc2g2j90xrsumy7n8" class="bg-lavender dark:prose:text-neutral-50 dark:text-neutral-50 dark:bg-garnet px-1"><span>nprofile1qy2hwumn8ghj7un9d3shjtnyd968gmewwp6kyqpqv9uf6hjlxgxf8qjawupggx7ucysfqeprlmygmhuytmc2g2j90xrsumy7n8</span> (<span class="italic">nprofile…y7n8</span>)</a></span><br/><br/><video controls width="100%" class="max-h-[90vh] bg-neutral-300 dark:bg-zinc-700"><source src="https://fediscience.org/system/media_attachments/files/116/499/536/975/102/513/original/4977b87dfa9989c7.mp4"></video> 2026-05-01T13:25:01Z https://njump.me/nevent1qqsv9qafldlrxzkcmgrweehx40xtqhua3tvldduzw7ermmfytwjzk0gzyp0l2874zsyh9k33d0e8ql8vmu8e6ql3srm06rxghyta35fegnatkt44cxp In super rare cases, the collisions in the large hadron collider are not between protons or ions, but between photons! (because those protons&amp;ions sometimes create photons. And then very rarely we get lucky) This #CMSPaper #discovers for the first time that W bosons (2 of them) are created in such collisions, and that can be used to check standard model calculations <a href="https://arxiv.org/abs/2601.21574">https://arxiv.org/abs/2601.21574</a><br/><br/> <img src="https://fediscience.org/system/media_attachments/files/116/379/113/340/566/523/original/cb450706ed8d0fb5.png"> 2026-04-10T06:59:03Z https://njump.me/nevent1qqstx06kketq2phj3vwkj2fgvw05x7ma8cm9npgyjrwtm92s6p9rygszyp0l2874zsyh9k33d0e8ql8vmu8e6ql3srm06rxghyta35fegnatk5une9q Want to know what a CMS underground visit is like? Earlier this year, I took particle physicist (and science communicator extraordinaire) Clara Nellist to visit the Compact Muon Solenoid underground at CERN. The result is now on YouTube! <br/><br/>youtu.be/dumEjuLWo3Q?... 2026-03-04T07:09:01Z https://njump.me/nevent1qqs80patsrrflvq8he2exy8fjnk2axp4rltna70j80naylzkwkywadgzyp0l2874zsyh9k33d0e8ql8vmu8e6ql3srm06rxghyta35fegnatkdr7j44 One of the most classical ways to look for undiscovered particles at the LHC is to look for unexpected resonances in falling spectra, for example in the jets coming from quarks and gluons. This #CMSPaper compares the cutting edge of #machinelearnining #ai methods to see how well they do for top quark resonances, and examines what the strengths and weaknesses are for the different techniques on the market <a href="https://arxiv.org/abs/2512.20395">https://arxiv.org/abs/2512.20395</a><br/><br/> <img src="https://fediscience.org/system/media_attachments/files/116/147/603/497/611/160/original/fe04c8807c979634.png"> 2026-02-28T09:43:03Z https://njump.me/nevent1qqsymf77xx52peqr83uyt5mdycaw56jcc9ch2h90nh5rs54f47fpmhqzyp0l2874zsyh9k33d0e8ql8vmu8e6ql3srm06rxghyta35fegnatkuensu3 Sometimes it is also important to talk about how awesome we are at @desy. Also the compact muon solenoid was looking awesome today, and we are are already getting busy with making it even more awesome for the LHC upgrade<br/><br/> <img src="https://fediscience.org/system/media_attachments/files/116/108/439/161/379/323/original/af21aa0a7447afe2.jpeg"> <br/> <img src="https://fediscience.org/system/media_attachments/files/116/108/439/162/402/851/original/5f954e72dff454ee.jpeg"> <br/> <img src="https://fediscience.org/system/media_attachments/files/116/108/439/167/061/563/original/9c41e7b90fa0403b.jpeg"> <br/> <img src="https://fediscience.org/system/media_attachments/files/116/108/439/167/061/564/original/fe19f375725c3101.jpeg"> 2026-02-21T11:43:02Z https://njump.me/nevent1qqszr8nsn38cmy7fppfuqffwfgdpr8sjyt4wl2clfl0pqczqqtjyamgzyp0l2874zsyh9k33d0e8ql8vmu8e6ql3srm06rxghyta35fegnatk47q3jq As renaming geographic locations is a thing now, I see an easy way to protect #Greenland. Just rename it to Epsteinland. <br/><br/>You’re welcome. 2026-01-21T07:21:09Z https://njump.me/nevent1qqsxaaf8v5vzxkm8mwe3far2gz78r4wj6n4jdx9xtrgvp0r7ygwahegzyp0l2874zsyh9k33d0e8ql8vmu8e6ql3srm06rxghyta35fegnatkaj8t9s The LHC recently collided Oxygen and Neon ions. That is an important input to understanding how nuclear interactions change depending on the size of the colliding objects. This #CMSPaper observes &#34;collective flow&#34;, essentially a sign of the quark gluon plasma, in those collisions buff.ly/NcLWdAj<br/><br/> <img src="https://fediscience.org/system/media_attachments/files/115/931/830/134/901/019/original/b63435def7529c0c.png"> 2026-01-21T07:09:02Z https://njump.me/nevent1qqsw8g3nyvwwn44szed8q9kfr2pkanp02u6ar7fz8e7llflz3snszwqzyp0l2874zsyh9k33d0e8ql8vmu8e6ql3srm06rxghyta35fegnatkrdvcf0 In reply to <a href='/nevent1qqsg9rm47ktl9dfznjkeu0edp483gxaqal3taw4jtwn7wwc05ca5lecpz4mhxue69uhhyetvv9ujuerfw36x7tnsw43qsxlqwt'>nevent1q…lqwt</a><br/>_________________________<br/><br/><span itemprop="mentions" itemscope itemtype="https://schema.org/Person"><a itemprop="url" href="/nprofile1qy2hwumn8ghj7un9d3shjtnyd968gmewwp6kyqpq3ywze2gprkv7ntuty96u8h63j3nvnwwny7zhrrmuj50qtw6c9a0slv3xmn" class="bg-lavender dark:prose:text-neutral-50 dark:text-neutral-50 dark:bg-garnet px-1"><span>nprofile1qy2hwumn8ghj7un9d3shjtnyd968gmewwp6kyqpq3ywze2gprkv7ntuty96u8h63j3nvnwwny7zhrrmuj50qtw6c9a0slv3xmn</span> (<span class="italic">nprofile…3xmn</span>)</a></span> <span itemprop="mentions" itemscope itemtype="https://schema.org/Person"><a itemprop="url" href="/nprofile1qy2hwumn8ghj7un9d3shjtnyd968gmewwp6kyqpqgk7f4mry59z9khkduv7y3h9uy3h45c38cns60aassuucda493rtqv9cmq0" class="bg-lavender dark:prose:text-neutral-50 dark:text-neutral-50 dark:bg-garnet px-1"><span>nprofile1qy2hwumn8ghj7un9d3shjtnyd968gmewwp6kyqpqgk7f4mry59z9khkduv7y3h9uy3h45c38cns60aassuucda493rtqv9cmq0</span> (<span class="italic">nprofile…cmq0</span>)</a></span> it exists for sun burn already btw. 2026-01-19T18:56:07Z https://njump.me/nevent1qqsxzddfrj4mxpw9u8a4k29s936ht5qmzn8cs2fd57jmq898y7v9ndgzyp0l2874zsyh9k33d0e8ql8vmu8e6ql3srm06rxghyta35fegnatklh9edr In reply to <a href='/nevent1qqs8q2jjpylvyesz6q95zykr79cdfpuxlyd06j30kdm3ct283a0g04cpz4mhxue69uhhyetvv9ujuerfw36x7tnsw43qagun6r'>nevent1q…un6r</a><br/>_________________________<br/><br/><span itemprop="mentions" itemscope itemtype="https://schema.org/Person"><a itemprop="url" href="/nprofile1qy2hwumn8ghj7un9d3shjtnyd968gmewwp6kyqpq3ywze2gprkv7ntuty96u8h63j3nvnwwny7zhrrmuj50qtw6c9a0slv3xmn" class="bg-lavender dark:prose:text-neutral-50 dark:text-neutral-50 dark:bg-garnet px-1"><span>nprofile1qy2hwumn8ghj7un9d3shjtnyd968gmewwp6kyqpq3ywze2gprkv7ntuty96u8h63j3nvnwwny7zhrrmuj50qtw6c9a0slv3xmn</span> (<span class="italic">nprofile…3xmn</span>)</a></span> <span itemprop="mentions" itemscope itemtype="https://schema.org/Person"><a itemprop="url" href="/nprofile1qy2hwumn8ghj7un9d3shjtnyd968gmewwp6kyqpqgk7f4mry59z9khkduv7y3h9uy3h45c38cns60aassuucda493rtqv9cmq0" class="bg-lavender dark:prose:text-neutral-50 dark:text-neutral-50 dark:bg-garnet px-1"><span>nprofile1qy2hwumn8ghj7un9d3shjtnyd968gmewwp6kyqpqgk7f4mry59z9khkduv7y3h9uy3h45c38cns60aassuucda493rtqv9cmq0</span> (<span class="italic">nprofile…cmq0</span>)</a></span> started as a lab rat, now mostly administrator. I got my PhD over 20 years ago, the young peeps in my group are definitely hands on ofc but I now am proud when I can help them still when I have time. As is of course rather normal for academic career paths 2026-01-19T18:39:36Z https://njump.me/nevent1qqs8ftc4w6rc28va5k4a206e9phwu4yd68ts8uhpeagaj4qrw5ecuvqzyp0l2874zsyh9k33d0e8ql8vmu8e6ql3srm06rxghyta35fegnatkpfu8xp In reply to <a href='/nevent1qqsw4upa92yqgnk52q4yyzmjx6hu0vcdn87al3ct0828plnahrw7gxqpz4mhxue69uhhyetvv9ujuerfw36x7tnsw43qln73r5'>nevent1q…73r5</a><br/>_________________________<br/><br/><span itemprop="mentions" itemscope itemtype="https://schema.org/Person"><a itemprop="url" href="/nprofile1qy2hwumn8ghj7un9d3shjtnyd968gmewwp6kyqpqgk7f4mry59z9khkduv7y3h9uy3h45c38cns60aassuucda493rtqv9cmq0" class="bg-lavender dark:prose:text-neutral-50 dark:text-neutral-50 dark:bg-garnet px-1"><span>nprofile1qy2hwumn8ghj7un9d3shjtnyd968gmewwp6kyqpqgk7f4mry59z9khkduv7y3h9uy3h45c38cns60aassuucda493rtqv9cmq0</span> (<span class="italic">nprofile…cmq0</span>)</a></span> hehe so true. No nasty solvents for me. But I do have a fancy particle collider :) 2026-01-19T15:51:11Z https://njump.me/nevent1qqsz5u0xnpdeer2cz3flc50dyldp67dprte42pgswhruzr7hdz6uwdczyp0l2874zsyh9k33d0e8ql8vmu8e6ql3srm06rxghyta35fegnatkpvvqpz In reply to <a href='/nevent1qqs8aaa8mud83lq8k7z0qz2xx8xfnntvkj0q3xfdkw4hvh7t3a9arvcpz4mhxue69uhhyetvv9ujuerfw36x7tnsw43qthnk7c'>nevent1q…nk7c</a><br/>_________________________<br/><br/>Also, my physics awesomeness is not stored in my nails. So physics is also totally doable for people without fancy nails. OBVIOUSLY. 2026-01-19T12:15:50Z https://njump.me/nevent1qqs8aaa8mud83lq8k7z0qz2xx8xfnntvkj0q3xfdkw4hvh7t3a9arvczyp0l2874zsyh9k33d0e8ql8vmu8e6ql3srm06rxghyta35fegnatkn3pt9z I heard last week that the physics teacher of the daughter of one of my colleagues told the daughter that girls who do their nails don’t do physics. Sigh.<br/><br/>So, here are the nails of an internationally leading particle physics professor. My nails. <br/><br/>Don’t believe the gatekeepers! #womeninSTEM<br/><br/><video controls width="100%" class="max-h-[90vh] bg-neutral-300 dark:bg-zinc-700"><source src="https://fediscience.org/system/media_attachments/files/115/921/697/792/278/190/original/b523c3783e8cea2c.mp4"></video> 2026-01-19T12:12:17Z https://njump.me/nevent1qqs2t76l6juyvla2ntadd5wavxrs3gny2ursral4y2zc3dpd5jsf6yqzyp0l2874zsyh9k33d0e8ql8vmu8e6ql3srm06rxghyta35fegnatkp446f6 The production of the Higgs boson along with an undiscovered hypothetical particle is an important signature for detecting physics beyond the standard model. This #CMSPaper looks for the &#34;Higgs boson+jet not consistent with the standard model&#34; signature (we didn&#39;t see any): arxiv.org/abs/2509.13635<br/><br/> <img src="https://fediscience.org/system/media_attachments/files/115/917/139/582/460/926/original/05e725683d024029.png"> 2026-01-18T16:53:02Z https://njump.me/nevent1qqspwdwuamzuklm5cumgqh5j5xaqqqq4w530yqdymjts0kt7ndcqtuqzyp0l2874zsyh9k33d0e8ql8vmu8e6ql3srm06rxghyta35fegnatkkryy6k There is no explanation why there are only 6 quarks seen in nature. So, we check if we can see an undiscovered extra quark in our collisions. This #CMSPaper looks for those in signatures where all particles are close together arxiv.org/abs/2510.25874<br/><br/> <img src="https://fediscience.org/system/media_attachments/files/115/858/849/459/789/886/original/6004e32469672e83.png"> 2026-01-08T09:49:08Z https://njump.me/nevent1qqswfg2zu3g2hlsvxewx3hlj3jmhxz472jm2zjddtw0l6x25gmxujnczyp0l2874zsyh9k33d0e8ql8vmu8e6ql3srm06rxghyta35fegnatk6ul9cd When different particles are produced together, we can use those collisions to study their interactions. This #CMSPaper discovers that top quarks, W and Z bosons are made together, allowing us to precisely study their interactions. A result from our group in Hamburg btw! arxiv.org/abs/2510.19080<br/><br/> <img src="https://fediscience.org/system/media_attachments/files/115/702/030/869/842/960/original/c8644ab5eb36e6de.png"> 2025-12-11T17:08:04Z https://njump.me/nevent1qqsxhjsd5d443ez6q72u44t3u2jsh35hzx2pny4a64q09cp3z3lfqpszyp0l2874zsyh9k33d0e8ql8vmu8e6ql3srm06rxghyta35fegnatk932jca It turns out that even though the paper is #openaccess, Nature &amp; co still try to con tax-funded scientists into paying for the summary articles #opensciencefail #paywall <a href="https://www.nature.com/articles/d41586-025-03591-7">https://www.nature.com/articles/d41586-025-03591-7</a> 2025-12-08T09:43:00Z https://njump.me/nevent1qqsgqpsedmpelevw6q0qwepdekmwjrsk9r2nu7vk94edsjewqyn05wczyp0l2874zsyh9k33d0e8ql8vmu8e6ql3srm06rxghyta35fegnatkz9p5a5 I don’t fly often. But when I do, I get super annoyed by #eurowings. And not for the reason you may think:<br/><br/>They seem to be unable to have a computer system where professors are female. And as that title is in my frequent flyer info, I can never check in online as obviously #conputersaysno to a woman checking in as Professor Blekman #everydaysexism<br/><br/> <img src="https://fediscience.org/system/media_attachments/files/115/660/615/276/377/708/original/de6780b7f649b335.jpeg"> 2025-12-04T09:35:32Z https://njump.me/nevent1qqswr50urgk4fqdkq7cmkwks0kxv7krhw8j44qmzqhr32tkz6nstwfgzyp0l2874zsyh9k33d0e8ql8vmu8e6ql3srm06rxghyta35fegnatkgg9hyg Which particle are you? FInd out your particle personality with this fun quiz<br/><br/><a href="https://gd.games/instant-builds/92b2641e-8784-4ec7-b8c1-76c9b4cdccae">https://gd.games/instant-builds/92b2641e-8784-4ec7-b8c1-76c9b4cdccae</a><br/><br/><video controls width="100%" class="max-h-[90vh] bg-neutral-300 dark:bg-zinc-700"><source src="https://fediscience.org/system/media_attachments/files/115/615/251/994/407/919/original/e881ef8c0742e053.mp4"></video> 2025-11-26T09:19:06Z https://njump.me/nevent1qqsye3zcq660v46d4fpnrq0y32qrlh0lfr0er4wkl377jwteesy68cgzyp0l2874zsyh9k33d0e8ql8vmu8e6ql3srm06rxghyta35fegnatkuv337q Are there undiscovered particles that decay to a Higgs boson and something else? This #CMSPaper describes how we scanned the invariant mass spectrum, but did not find any signs (in very very few events, and this should be rare. We will do this again when we have more data) arxiv.org/abs/2508.11494<br/><br/> <img src="https://fediscience.org/system/media_attachments/files/115/598/878/424/872/410/original/8a44995374ca52ff.png"> 2025-11-23T11:55:03Z https://njump.me/nevent1qqsq62g89x9a5jcuayc4ff7p24ksq3h7mvvmztd5qajst2pecu7ry7gzyp0l2874zsyh9k33d0e8ql8vmu8e6ql3srm06rxghyta35fegnatklgsrwt Are there undiscovered particles that decay to a Higgs boson and something else? This #CMSPaper describes how we scanned the invariant mass spectrum, but did not find any signs (in very very few events, and this should be rare. We will do this again when we have more data) arxiv.org/abs/2508.11494<br/><br/> <img src="https://fediscience.org/system/media_attachments/files/115/513/928/039/410/314/original/cb9e30348af394de.png"> 2025-11-08T11:51:03Z https://njump.me/nevent1qqsg4ttwfkvj9eefr2hypw3eqqnmlkp7z8t0hyrwfrjy3qru7pa3n7gzyp0l2874zsyh9k33d0e8ql8vmu8e6ql3srm06rxghyta35fegnatk2p36q2 The LHC produces a large number of Z bosons. So it is worthwhile checking if some of them behave inconsistently with the standard model. This #CMSPaper measured that the chance that Z bosons decay to two different kinds of leptons is smaller than one in 10 million arxiv.org/abs/2508.07512<br/><br/> <img src="https://fediscience.org/system/media_attachments/files/115/509/547/656/861/678/original/dcffec17ab12bbd6.png"> 2025-11-07T17:17:03Z https://njump.me/nevent1qqsg4ju0rts7jzlhpy5lyxg60fq3tu6ttga6f9e3222msrn2ck6rd8szyp0l2874zsyh9k33d0e8ql8vmu8e6ql3srm06rxghyta35fegnatkpjfhle I learnt a lot today and so did the audience. Lifelong learning for everyone. On science for peace, and the power of big questions to achieve the impossible at cern 😇🤩<br/><br/> <img src="https://fediscience.org/system/media_attachments/files/115/499/578/127/364/204/original/53e27c74a1b4cb81.jpeg"> 2025-11-05T23:01:40Z https://njump.me/nevent1qqsrwjg84v3lv6596usqvtxy6zs979wgvrdx9f8cmw3rw0sq3n05vpczyp0l2874zsyh9k33d0e8ql8vmu8e6ql3srm06rxghyta35fegnatk386yfa We are hiring! Well, my DESY colleague Katerina Lipka is hiring. She does precision measurements of the standard model, trying to find the cracks. Do you want to help identify where the standard model starts breaking down? Then this is the PhD for you: inspirehep.net/jobs/3065448<br/><br/><video controls width="100%" class="max-h-[90vh] bg-neutral-300 dark:bg-zinc-700"><source src="https://fediscience.org/system/media_attachments/files/115/469/911/520/339/829/original/3c47614c432b57b7.mp4"></video> 2025-10-31T17:17:04Z https://njump.me/nevent1qqsvy5w0au7gm8gwql6w45q9zfrayd3gd8q4d7g4m9sevdfdp3293yszyp0l2874zsyh9k33d0e8ql8vmu8e6ql3srm06rxghyta35fegnatkdwuyph Four years ago I made the giant leap to (during a pandemic) move my professional life from Brussels to Hamburg. This was highly disruptive also for my group. It makes me super proud that the first DESY student has now submitted his PhD thesis. I&#39;m a very excited and proud supervisor, also because it is an excellent thesis! 2025-10-27T18:00:30Z https://njump.me/nevent1qqs0nen4puae7n9058lmsmjvp48emfd7vm5zla00qwlslq384up5s8czyp0l2874zsyh9k33d0e8ql8vmu8e6ql3srm06rxghyta35fegnatkpyfmqc The LHC recently collided Oxygen and Neon ions. These are lighter than the &#39;normal&#39; Lead collisions, so they are a very important input to understanding how nuclear interactions change depending on the size of what is colliding. This #CMSPaper observes &#34;collective flow&#34;, essentially a sign of the quark gluon plasma, in those collisions and compares it to the best available theoretical predictions (that all have some disagreement) <a href="https://arxiv.org/abs/2510.02580">https://arxiv.org/abs/2510.02580</a><br/><br/> <img src="https://fediscience.org/system/media_attachments/files/115/434/419/829/192/528/original/8554d7b79054a108.png"> 2025-10-25T10:51:04Z https://njump.me/nevent1qqs2sduxzm4ar8ekez0rdp4ven3nufjmp9kzt7ak7xju3aml4lcxepgzyp0l2874zsyh9k33d0e8ql8vmu8e6ql3srm06rxghyta35fegnatk9mymg3 This #CMSPaper measures D mesons (particles containing charm and other quarks) produced in collisions when the LHC works as a photon-heavy ion collider. These results help as input to nuclear physics in general, and used in predictions in astrophysics, for example arxiv.org/abs/2509.08626<br/><br/> <img src="https://fediscience.org/system/media_attachments/files/115/355/147/434/745/758/original/07d2bf4153653b66.png"> 2025-10-11T10:51:03Z https://njump.me/nevent1qqsg0xsw734xd3ykvehdvwulhhenjl2j5gleqv2l5gcqcmm37jwq07szyp0l2874zsyh9k33d0e8ql8vmu8e6ql3srm06rxghyta35fegnatk6r79tx I love my colleagues, after a super long exhausting day (where I got to push the limits of the CERN mail servers, if you are on CMS you may received one of those mails) I get to put my #2025breakthroughprize into a frame that a sweet colleague gave me. <br/><br/>Now time for downtime!<br/><br/> <img src="https://fediscience.org/system/media_attachments/files/115/339/719/680/353/811/original/4d236d50f3ef852b.jpeg"> 2025-10-08T17:27:34Z https://njump.me/nevent1qqstymw8hup9nlryhapjk3w2ceu329csa0j2nc0qzlvu8hhwc9x7xhszyp0l2874zsyh9k33d0e8ql8vmu8e6ql3srm06rxghyta35fegnatkp3talp Particle physicists use simulations to distinguish new findings from background collisions at the LHC. This #CMSPaper examines the effectiveness of these simulations, identifying their strengths and weaknesses to select the best tools for specific tasks. More at arxiv.org/abs/2505.17850<br/><br/> <img src="https://fediscience.org/system/media_attachments/files/114/682/225/664/891/643/original/cef46890ab36b338.png"> 2025-06-14T14:38:11Z https://njump.me/nevent1qqs8ulugtmqy8tvza0sueseax7ky7tdyc5jlq97h4kxhmp0nchxupzczyp0l2874zsyh9k33d0e8ql8vmu8e6ql3srm06rxghyta35fegnatktmh7p6 Deadline soon! I&#39;m recruiting a PhD student to work on CMS, with a focus on substructure/BSM in four-top final states/CMS HGCAL: inspirehep.net/jobs/2921389 (all details in link)<br/><br/><video controls width="100%" class="max-h-[90vh] bg-neutral-300 dark:bg-zinc-700"><source src="https://fediscience.org/system/media_attachments/files/114/675/286/192/741/802/original/9e9ebc2fa689e9c8.mp4"></video> 2025-06-13T09:13:24Z https://njump.me/nevent1qqsvzup8z3nq5d22lfm39pxdlkztslkktzve60k203zs26f20hhyh8czyp0l2874zsyh9k33d0e8ql8vmu8e6ql3srm06rxghyta35fegnatkx82vaw In reply to <a href='/nevent1qqsyzqdth20tu424zdz30kcpaaptacccuktxcl7d4dl4n6ajmwkttsgpz4mhxue69uhhyetvv9ujumt0wd68ytnsw43qmra99q'>nevent1q…a99q</a><br/>_________________________<br/><br/><span itemprop="mentions" itemscope itemtype="https://schema.org/Person"><a itemprop="url" href="/nprofile1qy2hwumn8ghj7un9d3shjtnddaehgu3wwp6kyqpq7czt0gwf5lfr6v3fj06teh8tlhvzy8gs4duzg09gex5uxll420mqe7dgud" class="bg-lavender dark:prose:text-neutral-50 dark:text-neutral-50 dark:bg-garnet px-1"><span>nprofile1qy2hwumn8ghj7un9d3shjtnddaehgu3wwp6kyqpq7czt0gwf5lfr6v3fj06teh8tlhvzy8gs4duzg09gex5uxll420mqe7dgud</span> (<span class="italic">nprofile…dgud</span>)</a></span> maybe Particle Fever? It’s realistic but not so much about actually operating the LHC as a machine. Worthwhile tho. <a href="https://www.imdb.com/title/tt1385956/">https://www.imdb.com/title/tt1385956/</a> 2025-06-12T20:47:29Z https://njump.me/nevent1qqsdlhgnrrtyp5mzjkrqkelde2t3q94w859f58qg3sm9e5r4mpe7legzyp0l2874zsyh9k33d0e8ql8vmu8e6ql3srm06rxghyta35fegnatkhhvnvj We are always looking for new particles that we can use to study the quark gluon plasma. This #CMSPaper shows the phi meson (a bound state consisting of a strange quark and strange antiquark) is quite a useful &#34;hard probe&#34; (I know, jargon) to measure the QGP in an extra way arxiv.org/abs/2504.05193<br/><br/> <img src="https://fediscience.org/system/media_attachments/files/114/669/528/684/821/123/original/11e9c9e5d061f5c6.png"> 2025-06-12T08:49:11Z https://njump.me/nevent1qqszp6uq0w5h50x8u6ky0z66dw5svntuttjp65xngvjs5uf2ntdnj9gzyp0l2874zsyh9k33d0e8ql8vmu8e6ql3srm06rxghyta35fegnatkf8hjun Tonight I got to hold (and hug) our breakthrough prize 🏆 #award - it’s wonderful to be appreciated but even more wonderful that is so pretty 🤩 <br/><br/>#scientistswhoselfie #physics<br/><br/> <img src="https://fediscience.org/system/media_attachments/files/114/660/885/927/816/137/original/42bcb6ad3e89d967.jpeg"> 2025-06-10T20:11:13Z https://njump.me/nevent1qqsxqrzpssdghe3rfjll79m2j7gu9r4wgtzdfzyhu2dgjpg4surm47qzyp0l2874zsyh9k33d0e8ql8vmu8e6ql3srm06rxghyta35fegnatkcqc0za The W and Z boson, the &#34;photons of the weak force&#34; still carry important and previously unknown information, particularly on how quarks and gluons in protons behave (and stick together) at the high energies of the LHC. This #CMSpaper 1390 measures W and Z boson production arxiv.org/abs/2503.09742<br/><br/> <img src="https://fediscience.org/system/media_attachments/files/114/652/519/099/450/824/original/278e37492a434eb3.png"> 2025-06-09T08:43:25Z https://njump.me/nevent1qqsgn4azqqehvwpq8u9k9802ancnv3vs6gsz6hnd3rffclpsa5f74sqzyp0l2874zsyh9k33d0e8ql8vmu8e6ql3srm06rxghyta35fegnatkj4g3q3 #CMSPaper 1398 is a meta-analysis of CMS results with Higgs bosons, Z and W bosons, and top quarks. It is interpreted in the Standard Model Effective theory looking for subtle changes with respect to the standard model predictions that are seen over more than one signature arxiv.org/abs/2504.02958<br/><br/> <img src="https://fediscience.org/system/media_attachments/files/114/647/375/073/110/315/original/d71d8571cff382e2.png"> 2025-06-08T10:55:14Z https://njump.me/nevent1qqsy5zj5v24852ae5ega5sty27jcl9kdl9rxnf9n3ggmca85dxtllegzyp0l2874zsyh9k33d0e8ql8vmu8e6ql3srm06rxghyta35fegnatk3nrc8c We are always looking for new particles that we can use to study the quark gluon plasma. This #CMSPaper shows the phi meson (a bound state consisting of a strange quark and strange antiquark) is quite a useful &#34;hard probe&#34; (I know, jargon) to measure the QGP in an extra way arxiv.org/abs/2504.05193<br/><br/> <img src="https://fediscience.org/system/media_attachments/files/114/642/593/471/456/266/original/83768eb8caafeb55.png"> 2025-06-07T14:39:12Z https://njump.me/nevent1qqst9hcn5llpzhk3egnp6qxh6md9rltrtqvz6jnp9ch4k3xm00vf3qqzyp0l2874zsyh9k33d0e8ql8vmu8e6ql3srm06rxghyta35fegnatk36dj5p #CMSPaper 1395 observes a totally unexpected extra behaviour of #topquark pair production; we see significantly more top quarks than we expect, and they kind of behave like they come from something particle-like. We are reluctant to just call it Topponium, but very exciting! arxiv.org/abs/2503.22382<br/><br/> <img src="https://fediscience.org/system/media_attachments/files/114/641/696/817/011/926/original/0ac0bae990e306d9.png"> 2025-06-07T10:51:10Z