freyablekman

vicgrinberg, 2 months ago to random

Is there a Dutch charity that would help folks who can't afford it with dental care in the Netherlands?

Boosts welcome.

(Yes I googled and did not find one that would be still active. So please refrain from "here is what I googled" results. Obviously not for me, but - for reasons - that's something I want to donate to.)

freyablekman, 2 months ago to Trains

Good morning everyone 👋

Today I am travelling (almost) transcontinental by train. Few changes so what could possibly go wrong… 😑 probably a few things but I’m prepared!🤣 I will add to this thread during my trip today

So let’s get going! 🏠🚇🚄🚄🏖️

#AcademicChatter #trains #businessTravel

freyablekman, 3 months ago to random

Just arrived at CERN for CMS Experiment CERN week next week. The weather is glorious and I can see Mont Blanc (and a blue magnet)

freyablekman, 3 months ago to random

#CMSpaper 1261 sees a new way to produce a combination of known particles: a top quark, a W boson, and a Z boson. This is an important background to, for example, Higgs boson studies. The result sees evidence of 3.4 sigma for tWZ production: https://arxiv.org/abs/2312.11668

freyablekman, 3 months ago to random

#CMSPaper 1255 measures the shape of the quark-gluon plasma blob created in LHC lead-lead collisions. Knowing that shape helps deduce the properties of the quark-gluon plasma, which have implications for astrophysics and even some aspects of string theory https://arxiv.org/abs/2311.11370

freyablekman, 4 months ago to random

#CMSPaper 1259: are top quarks interacting inconsistently with other quarks in the weak nuclear interaction? Such a signature would be a tell-tale sign for new physics (and how often it happens would point to what kind of new undiscovered particles exist). In this case, we check interactions with photons and conclude if this happens, it is less than one in about 100000 top quarks. Paper: https://arxiv.org/abs/2312.08229

freyablekman, 4 months ago to random

Just a reminder that the DESY summer student program registration closes on 31 January! Projects on particle physics and much more!

Registration/info in link below and Manuel is explains very well why you should apply if you are a MSc student

👉https://summerstudents.desy.de/

video/mp4

freyablekman, 4 months ago to physics

#CMSPaper 1257: are there top quarks that decay to three leptons? This would be a sign of physics beyond the standard model.
We don't see any (even when throwing machine learning at it to reduce background, just in case), at least its less than one in tens of millions of top quarks (depending on some assumptions). Paper: http://arxiv.org/abs/2312.03199 #particlephysics #cern #physics #machinelearning @CMSexperiment

freyablekman, 4 months ago to random

It’s that time of year again that I am teaching particle physics (mostly with top quarks but also data driven methods and systematic uncertainty techniques) to the Oxford first year doctoral students 🤩🤓😎🥳

freyablekman, 4 months ago to machinelearning

We do a lot of creative and interesting work here at @desy, including using #machinelearning #generativemodels to make particle collision simulations. Here's doctoral student Moritz Scham explaining his work on #DeepTreeGAN, essentially a "#DALL-E for #particles" - check out more on group's instagram: https://www.instagram.com/p/C12MbLtArUA/

freyablekman, 5 months ago to random

The Quantum Universe MSc scholarship (stipend 934€/month for 12 months) targets local or external Master students who have not yet started their Master at Universität Hamburg. You could work on CMS Experiment CERN (pic, with MSc students btw)! All details: https://www.qu.uni-hamburg.de/cluster/jobs.html

freyablekman, 5 months ago to random

Delighted to have received one of the 15 per year "CMS shifter mug 2023” for my contributions as shift leader in the last 2 months of the year, and my integrated support in 2023.

As expected from the name of this #prize that rewards #teamwork, the prize is this lovely mug!

freyablekman, 5 months ago to random

At DESY today, or so I saw on instagram (I’m in Amsterdam with very little snow)

freyablekman, 6 months ago to random

#CMSPaper 1248 studies collisions where the LHC works as a photon collider, and this paper searches for top quarks in those collisions to study top-photon interactions. None are seen(yet); these collisions should be a factor 1000 rarer than our sensitivity
https://buff.ly/47m0IgW

freyablekman, 6 months ago to random

#CMSPaper 1244 checks for #supersymmetry in events with photons and jets, looking for signatures without missing energy. With a focus on extra Higgs-like bosons in a hidden sector, the study found no additional events, even observing a slight undershoot https://buff.ly/45MRHN4

freyablekman, 6 months ago to random

#CMSPaper 1247 reports the first-ever observation of two W bosons together with a photon. This could also be a sign of Higgs production together with a photon, but that is so rare that we don't see it (yet!) 😬 🫣
Find more information about this result here:
https://arxiv.org/abs/2310.05164

freyablekman, 6 months ago to random

#CMSPaper 1245: This paper studies if Υ bosons (made of a b quark-antiquark pair) get stopped differently in proton-lead as in lead-lead collisions. This is interesting because that is the case for particles made of c quarks. For the Y it is not, showing that very heavy quarks interact differently with very dense systems (like the quark-gluon-plasma) https://arxiv.org/abs/2310.03233

freyablekman, 6 months ago to random

One thing many might not expect is that I’m really into well made #handbags. Particularly because it’s so difficult to find interesting not black-polyester-backpack laptop bags.

So I was definitely in wild shopping mode when my a local handbag designer has a sample sale