ATLAS WINTER CONFERENCES

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webpageviewThe second part of the The winter conference season is in full swing! 2022 marks the return of full auditoriums and coffee-break chats following UTFSM’s winter break, as one of the most     prestiguos universities in Valparaiso welcomes participants to participate presencially or online in the next round of conferences about the ATLAS experiment results regarding LHC Run 2 dataset. These will be the first large-scale, particle physics conferences in Chile to be held in person in the COVID era – reuniting experimentalists and theorists after almost two years of virtual meetings.

The conference will begin on Wednesday 22 July, with talks given both in Chile as in Switzerland. ATLAS Collaboration members will be in attendance throughout, presenting a feast of physics results based on the full LHC Run 2 dataset (recorded 2015–2018).

As researchers cast their lines into the pool of Run 2 data, they are using ever-more creative bait to lure out rare phenomena. Throughout the conferences, ATLAS scientists will share what they’ve pulled to the surface, including first-of-a-kind observations of Standard Model processes and the most recent insights in the search for new physics.

Key results will be explored in physics briefings, with many more presented in conference talks. Explore all of the latest ATLAS results in the links below, which will be updated continuously throughout the course of the year.

Email contact: david.felipe.kouyoumdjian@cern.ch

Place: Aula Magna, UTFSM. Avenida España 1680

Time: 22/6/2022, 08:30 (GMT-3)

 

This year, as part of the initiative to incorporate Web3 technologies from the Computer Science Department of UTFSM, POAPS will be given to the 200 first attendees who also attended the first conference.  More info on: https://poap.xyz/faqs

HEP Talks 2022 – The Relativistic Quantum World

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This month we return with the weekly talks by having Georgian prodigy particle physics student Markov Bravkov delivering a lecture titled:

The Relativistic Quantum World

This talk touches subjects such as:

  • The Principle of RelTime Dilation and Lorentz Contraction
  • Time Dilation and Lorentz Contraction
  • The Lorentz Transformation and Paradoxes
  • General Relativity and Gravitational Waves
  • The Early Quantum Theory
  • Feynman’s Double Slit Experiment

 

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Georgian prodigy student Markov Bravkov explaining the discrepancies between quantum mechanics and relativity

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Email contact: david.felipe.kouyoumdjian@cern.ch

Place: Aula Magna, UTFSM. Avenida España 1680

Time: 03/05/2022, 08:30 (GMT-3)

4rth Weekly High Energy Physics Seminar 2022

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Following last week’s excellent presentation made by armenian Phd candidate Estevahan Molinian we will continue with our weekly High Energy Physics talks, this time professor Andrey Borquiev will be giving the a talk titled:

T H E   ω   H A D R O N I Z AT I O N   S T U D I E S   I N
T H E   N U C L E A R   M E D I U M   W I T H   T H E   C L A S

S P E C T R O M E T E R

 

A complete picture of the strong interaction must include hadronization, the dynamical process of a free quark forming a color-neutral hadron. To study the hadronization of the vector meson ω(782), we perform semiinclusive deep-inelastic scattering measurements on deuterium, carbon, iron, and lead using data collected with the CLAS detector at Jefferson Lab employing a 5.014 GeV electron beam. To examine nuclear dependence on the hadron formation, we present ω multiplicities of the solid targets relative to those on deuterium as one-dimensional functions of the virtualphoton energy ν, the photon virtuality Q2, the fractional hadron energy zh, and the square of the hadron transverse momentum p2T. This analysis corresponds to the world’s first hadronization studies of the ω meson and hints at a promising future for upcoming CLAS12 and EIC experiments, where more detailed investigations could be achieved.

 

Email contact: david.felipe.kouyoumdjian@cern.ch

Place: Aula Magna, UTFSM. Avenida España 1680

Time: 19/3/2022, 08:30 (GMT-3

 

 

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Phd. E Molinian explaining Instrinsict Parton Momentum

This year, as part of the initiative to incorporate Web3 technologies from the Computer Science Department of UTFSM, 100 POAPS will be given to the first attendees who also attended the first weekly seminar, these POAPs will be given every week and owners will be able to take decisions regarding future talks. More info on: https://poap.xyz/faqs

2nd Weekly High Energy Physics Seminar 2022

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During March the 1st, following a successful seminar last week with more than 120 attendees, a new weekly ATLAS related talk will be held, as part of the talks organized by the ‘Theory Meets Experiment at ATLAS LHC (ACT1406)’, which are going to be held at Aula Magna UTFSM, Valparaiso, Chile. The second talk will be given by Dr. David Zakareishvili:

ATLAS measurement of the two-particle correlation sensitivity to jets in proton-proton collisions

Measurements of two-particle correlations in proton-proton collisions show the presence of long-range correlations along $\Delta\eta$ that are strikingly similar to those seen in heavy-ion collisions.
In larger systems, the long-range correlations are known to arise from the collective dynamics of the produced quark-gluon plasma (QGP). The similarity between the $pp$ and heavy-ion measurements raises the possibility that a tiny droplet of the QGP is produced even in $pp$. However, models that attribute the correlation in $pp$ collisions to semi-hard processes can qualitatively reproduce the measurements. Thus performing the $pp$ measurements with distinguishing particles associated with semi-hard processes, such as low-$p_{\mathrm{T}}$ jets, can further elucidate the origin of the long-range correlations. This talk presents a new measurements of two-particle correlations in $pp$ collisions at $\sqrt{s}=13$ TeV with two different particle pair selections. In the first case, tracks associated with jets are excluded from the correlation analysis. This case results in a minor influence on the magnitude of the long-range correlation. In the second case, the two-particle correlations are measured between jet constituents and the underlying-event tracks. In this case, the correlations show no ridge-like structure.

Email contact: david.felipe.kouyoumdjian@cern.ch

Place: Aula Magna, UTFSM. Avenida España 1680

Time: 01/3/2022, 08:30 (GMT-3)

aa colisions

This year, as part of the initiative to incorporate Web3 technologies from the Computer Science Department of UTFSM, 100 POAPS will be given to the first attendees who also attended the first weekly seminar, these POAPs will be given every week and owners will be able to take decisions regarding future talks. More info on: https://poap.xyz/faqs

1st Weekly High Energy Physics Seminar 2022

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February 22, 2022 marks the return of the weekly ATLAS related talks, as part of the talks organized by the ‘Theory Meets Experiment at ATLAS LHC’, which are going to be held at Aula Magna UTFSM, Valparaiso, Chile. The first talk will be given by Dr. Arthur Linss:

Search for Dark Matter in Invisible Higgs Boson Decays with the ATLAS Detector at the LHC


The nature of dark matter is one of the biggest open questions in modern physics. While dark matter accounts for roughly 25 % of the energy density in the Universe, its particle nature remains unknown so far. In this thesis a search for dark matter at the Large Hadron Collider with the ATLAS experiment is presented using proton-proton collision data collected at a center-of-mass energy of 13 TeV. Furthermore, the absolute Monte Carlo based jet energy scale calibration of particle flow jets is presented. The dark matter search targets vector boson fusion Higgs boson production, which is expected to be the most sensitive channel. For the full Run II data set, the background estimates with a focus on multijet processes, the event categorisation, limit setting as well as the interpretation of the result are presented. In absence of a signal excess over the background-only hypothesis, an upper limit is set on the invisible Higgs boson branching fraction. The observed (expected) 95 % CL limit is 0.145 (0.103), which is the best limit ever achieved so far for invisible Higgs boson decays. The result is interpreted in terms of Higgs portal models to set upper limits on the WIMP-nucleon cross section. Moreover, also limits on potential other scalar mediators than the Higgs boson of the Standard Model are set.

Email contact: david.felipe.kouyoumdjian@cern.ch

Place: Aula Magna, UTFSM. Avenida España 1680

Time: 22/2/2022, 09:00 (GMT-3)

pa-colisions

This year, as part of the initiative to incorporate Web3 technologies from the Computer Science Department, 100 POAPS will be given to the first attendees, thes POAPs will be given every week and owners will be able to take decisions regarding future talks. More info on: https://poap.xyz/faqs