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2019-12-13
08:14
Search for New Physics through the Reconstruction of Challenging Signatures with the ATLAS detector / Testa, Marianna (LNF, Dafne Light) /ATLAS
Many theories of beyond the Standard Model (BSM) physics predict unique signatures which are difficult to reconstruct and the background rates are also a challenge. Signatures from displaced vertices anywhere from the inner detector to the muon spectrometer as well as those of new particles with fractional or multiple value of the charge of the electron or high mass stable charged particles are experimentally demanding signatures [...]
SISSA, 2019 - 4 p. - Published in : PoS ICHEP2018 (2019) 175 Fulltext: PDF;
In : XXXIX International Conference on High Energy Physics, Seoul, Korea, 4 - 11 Jul 2018, pp.175

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2019-12-13
08:14
Searches for new physics in lepton+jet final states / Bhat, Muzamil Ahmad (Tata Inst.) /CMS
Results of searches for new particles such as leptoquarks, heavy neutrinos, and W bosons with right-handed couplings in final states with leptons (charged or neutral) and jets are presented. The emphasis is given to the recent results obtained using data collected at Run-II of the LHC..
SISSA, 2019 - 4 p. - Published in : PoS ICHEP2018 (2019) 174 Fulltext: PDF;
In : XXXIX International Conference on High Energy Physics, Seoul, Korea, 4 - 11 Jul 2018, pp.174

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2019-12-13
08:14
Dark Matter searches with the ATLAS Detector / Tolley, Emma (Ohio State U.) /ATLAS
Dark matter could be produced at the LHC if it interacts weakly with the Standard Model. The search for dark matter can be performed either directly, by looking for a signature of large missing transverse momentum coming from the dark matter candidates escaping the detector, or more indirectly by looking for the intermediate mediators which would weakly couple the dark matter particles to the Standard Model. [...]
SISSA, 2019 - 4 p. - Published in : PoS ICHEP2018 (2019) 171 Fulltext: PDF;
In : XXXIX International Conference on High Energy Physics, Seoul, Korea, 4 - 11 Jul 2018, pp.171

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2019-12-13
08:14
Searches for sleptons with the ATLAS detector / Primavera, Margherita (INFN, Lecce) /ATLAS
Supersymmetry is one of the most popular extensions of the Standard Model, but no evidence supporting its validity has been observed at LHC up to date. The second period of data taking at the LHC at 13 TeV of center of mass energy ($\sqrt{s}$), Run-2, started in 2015 and provides an important test field for the search of beyond the Standard Model physics. [...]
SISSA, 2019 - 4 p. - Published in : PoS ICHEP2018 (2019) 169 Fulltext: PDF;
In : XXXIX International Conference on High Energy Physics, Seoul, Korea, 4 - 11 Jul 2018, pp.169

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2019-12-13
08:14
Fast calorimeter simulation in LHCb / Ratnikov, Fedor (Higher Sch. of Economics, Moscow) ; Zakharov, Egor (Skoltech) /LHCb
In HEP experiments CPU resources required by MC simulations are constantly growing and become a very large fraction of the total computing power (greater than 75\%). At the same time the pace of performance improvements from technology is slowing down, so the only solution is a more efficient use of resources. [...]
SISSA, 2019 - 5 p. - Published in : PoS ICHEP2018 (2019) 162 Fulltext: PDF;
In : XXXIX International Conference on High Energy Physics, Seoul, Korea, 4 - 11 Jul 2018, pp.162

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2019-12-13
08:14
TrackML : a tracking Machine Learning challenge / Golling, Tobias (Geneva U.) ; Amrouche, Sabrina (Geneva U.) ; Kiehn, Moritz (Geneva U.) ; Calafiura, Paolo (LBL, Berkeley) ; Farrell, Steven (LBL, Berkeley) ; Gray, Heather M (LBL, Berkeley) ; Estrade, Victor (U. Paris-Saclay) ; Germain, Cécile (U. Paris-Saclay) ; Gligorov, Vava (Paris U., VI-VII) ; Guyon, Isabelle (INRIA, Saclay) et al.
The High-Luminosity LHC will see pileup levels reaching 200, which will greatly increase the complexity of the tracking component of the event reconstruction. To reach out to Computer Science specialists, a Tracking Machine Learning challenge (TrackML) was set up on Kaggle in 2018 by a team of ATLAS, CMS and LHCb physicists, tracking experts and Computer Scientists, building on the experience of the successful Higgs Machine Learning challenge in 2014. [...]
SISSA, 2019 - 4 p. - Published in : PoS ICHEP2018 (2019) 159 Fulltext: PDF;
In : XXXIX International Conference on High Energy Physics, Seoul, Korea, 4 - 11 Jul 2018, pp.159

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2019-12-11
06:28
Di-Higgs results from the ATLAS and CMS experiments / Kagan, Michael (SLAC) /ATLAS ; CMS
Measurements of di-Higgs production are of fundamental importance to understanding the process of electroweak symmetry breaking and the structure of the Higgs potential. While the Standard Model (SM) predicted production crosssection for this process is too small to be observed by current LHC datasets, searches for this process at the ATLAS and CMS experiments can set limits on theSM production rate, anomalous Higgs self-couplings and Beyond the SM di-Higgs interaction vertices, and contributions to this process from new heavy resonances. [...]
2018 - 6 p. - Published in : (2018) , pp. 135-140
In : 53rd Rencontres de Moriond on Electroweak Interactions and Unified Theories, La Thuile, Italy, 10 - 17 Mar 2018, pp.135-140

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2019-12-10
08:56
Multiboson production measurements at the CMS experiment / Bellan, Riccardo (INFN, Turin ; Turin U.) /CMS
Precision measurements of multiboson production are a validation of the Standard Model. These multiboson processes are a background to Higgs boson measurements and searches for Beyond the Standard Model physics. [...]
SISSA, 2019 - 4 p. - Published in : PoS ICHEP2018 (2019) 194 Fulltext: PDF;
In : XXXIX International Conference on High Energy Physics, Seoul, Korea, 4 - 11 Jul 2018, pp.194

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2019-12-10
08:56
Searches for heavy neutral lepton production and lepton flavour violation in kaon decays at the NA62 experiment / Zamkovsky, Michal (Charles U.) /NA62
Search for heavy neutral lepton (HNL) production and lepton flavor and number violation (LFV/LNV) in charged kaon decays using the data collected by Kaon experiment NA62 at CERN are reported. Upper limits are established on the elements of the extended neutrino mixing matrix for heavy neutral lepton mass in the range 130-450 MeV, improving on the results from previous HNL production search. [...]
SISSA, 2019 - 4 p. - Published in : PoS ICHEP2018 (2019) 188 Fulltext: PDF;
In : XXXIX International Conference on High Energy Physics, Seoul, Korea, 4 - 11 Jul 2018, pp.188

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2019-12-10
08:56
Measurements of heavy flavor properties at CMS / Chen, Po-Hsun (Taiwan, Natl. Taiwan U.) /CMS
A new decay channel $B_{s2}(5840)^{0}\to{}B^{0}K_{s}$ has been observed by $6.3\sigma$ to $7.0\sigma$. Accompanied with the obserservation, there is also a hint of $B_{s1}\pm{}B^{∗0}K_{s}$. [...]
SISSA, 2019 - 4 p. - Published in : PoS ICHEP2018 (2019) 179 Fulltext: PDF;
In : XXXIX International Conference on High Energy Physics, Seoul, Korea, 4 - 11 Jul 2018, pp.179

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