freyablekman

freyablekman, 6 months ago to random

#CMSPaper 1228: one of the unexpected discoveries by CMS is correlations between the particles in proton-proton collisions, and this paper measures those in more detail by comparing short-range to long-range particle charges in various LHC collisions http://arxiv.org/abs/2307.11185

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freyablekman, 6 months ago to random

#CMSPaper 1230: This paper searches for undetectable particles in signatures with quarks, gluons, Higgs bosons and photons. It's a #NullResult, but it is sensitive to #supersymmetry partners of the Higgs boson, W/Z boson (worlds best!) ... and graviton!
https://arxiv.org/abs/2307.16216

freyablekman, 6 months ago to hamburg

This artwork is part of the exhibition Hyperloop by Nadav Drukker, a ceramic artist and Professor of Theoretical Physics!

Nadav's stoneware and porcelain works loosely represent his scientific research but also the beauty of science, with all of its twists and turns, blind allies, and intersections.

The exhibition is supported by our Quantum Universe cluster of the University of Hamburg (and DESY), opening next weekend (3 November!) in #Hamburg. https://hiddevanseggelen.com/exhibitions/nadav-drukker-solo-exhibition/

freyablekman, 7 months ago to random

#CMSPaper 1238: The ongoing LHC data collection period, known as Run 3, will continue until the end of 2025 ⌛The @CMSexperiment already underwent substantial upgrades to be ready for Run 3🔧 This paper serves as a point of reference for the detector configuration during Run 3. 🤩 👉 https://arxiv.org/abs/2309.05466

freyablekman, 7 months ago to random

#CMSpaper 1236: Question: How often does the actually LHC collide? The LHC intensity we call "luminosity". The @CMSexperiment has fancy detectors to check that. But there are also particles for which we can calculate their production rate so accurately that we can use them to calibrate the luminosity. This paper uses the production of the Z boson to measure the luminosity. The figure shows how well we measure the Z boson rate over time
https://arxiv.org/abs/2309.01008

freyablekman, 7 months ago to random

#CMSPaper 1234: #leptoquarks are hypothetical particles that interact with leptons and quarks, and they occur in many theories of physics beyond the standard model. This specific paper looks for leptoquarks in the (very) rare collisions where the LHC collides a lepton with a quark. This is a very novel method; it's not easy to select such collisions! It's a nullresult, but is so innovative that many improvements are still possible in the future.

👉 https://arxiv.org/abs/2308.06143

freyablekman, 7 months ago to random

#CMSPaper 1232: The production of Higgs bosons occurs in many ways, one of which is known as "vector-boson fusion," when the Large Hadron Collider produces Higgs bosons through the collision of W/Z bosons. Detecting these #Higgsbosons is challenging as the rest of the collision is particles produced close to the beam. Although a hint of the Higgs boson has been detected, it is too early to celebrate at just below 3 sigma. 🫣 🥳

The paper is here: http://arxiv.org/abs/2308.01253 @CMSexperiment

freyablekman, 7 months ago to random

#CMSPaper 1231: In this study, we investigate top quarks' behavior within the standard model effective field theory (SMEFT) framework. The introduction of SMEFT may subtly modify the way these particles behave. Our findings have important implications as they can place constraints on other predictions of new particles.

Check out the paper here: https://arxiv.org/abs/2307.15761

#particlephysics #CERN @CMSexperiment

freyablekman, 7 months ago to mastodon

One reason without haven’t seen many #cmspapers here is because I have not really found any good post management/scheduling apps on #mastodon and #blsky. Does anyone have any #recommendations? Of course all (incl twitter, meta for linkedin) even more awesome. Can/will pay if it is ethical software

freyablekman, 7 months ago to random

Today I’m in Manchester for a PhD defense (or in the local British academic lingo a “viva voce” or viva).

The weather here is just like in Hamburg!

freyablekman, 7 months ago to random

Yes, at CERN, we store data. Loads of data. Exabyte-plus loads of data! https://blocksandfiles.com/2023/10/05/cerns-exabyte-plus-of-data-needs-exabyte-class-eos-filesystem/

freyablekman, 7 months ago to physics

Very soon, the DESY summer student program will start again. Manuel did a project on
@CMSexperiment with my team members this summer, but listen to him yourself to discover what it was like! 🥳🤓😎📚

More details on the
@DESYnews website (soon): https://summerstudents.desy.de

#summerstudent #physics #students #stem #Hamburg #particlephysics

video/mp4

freyablekman, 8 months ago to random

Particle colliders are finicky machines that do regularly have downtimes. pic is from our public online monitoring So now after 2 months the LHC is back and I’m delighted to go on shift again. I am very excited!!

Learn more about the last downtime in this great video here: https://youtu.be/u0iUi5gTKXk?si=RJP-i1RxW57JDMgL

freyablekman, 9 months ago to random

Time for another safety mask training! Always the best #selfie 🤩

freyablekman, 9 months ago to random

#CMSPaper 1231: It is commonly accepted that the #StandardModel is an effective theory, meaning it stops working at high energy. This #measurement uses #topquarks to test a pragmatic extension to the standard model, called standard model effective field theory (#SMEFT) assuming that more complex interactions are possible and each will change the behavior of existing particles like top quarks. And those changes can be checked (which is what this paper does)

https://arxiv.org/abs/2307.15761

freyablekman, 9 months ago to random

#CMSPaper even simpler:

We measure how well charm quarks are included inside composite particles, by comparing how stable the particles are in busy and not-so-busy collisions.

https://sciencemastodon.com/@freyablekman/110819161411818789

freyablekman, 9 months ago to thailand

Vichayanun, a student I co-supervise, will be the first person defending an experimental particle physics #PhD at a #Thailand university (as far as I know)! Such #trailblazing is an incredible achievement, don't underestimate how difficult it is to do something first in your country!

Also, as I like #SciComm, I'm highlighting his fantastic Barbie-themed defense announcement (Love it!)

#science #sciencecommunication #particlephysics #CERN @CMSexperiment #Chulalongkorn @DESYnews

freyablekman, 11 months ago to random

#CMSPaper 1223: There are multiple resonances in the J/ψ-J/ψ mass distribution (some spotted by LHCb earlier), and @CMSexperiment also sees a new one. Whether you should call them particles or something else is somewhat controversial... so take that as you wish.. hopefully this result will help figure out whether it is a blob of quarks or two quark-pairs spinning around each other, or even something resembling a molecule! Plenty of questions, this is an exciting result 🤯 https://cms-results.web.cern.ch/cms-results/public-results/publications/BPH-21-003/index.html

freyablekman, 1 year ago to science

As an #introduction to me, and my #physics career, I highly recommend this article in
@PhysicsWorld
with an interview reflecting on particle physics #careers, using mine as an example

Also featuring: #research, #randomness and #luck, #collaboration, #science #academia, #diversityequityinclusion and #mentoring
https://physicsworld.com/a/freya-blekman-on-the-particle-pathway-of-big-science/