2021-04-13
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Implementation of the ATLAS-SUSY-2018-32 analysis (sleptons and electroweakinos with two leptons and missing transverse energy; 139 fb$^{−1}$)
/ Araz, Jack Y (Durham U., IPPP) ; Fuks, Benjamin (Paris, LPTHE ; Inst. U. de France)
We present the implementation in MadAnalysis 5 of the ATLAS-SUSY-2018-32 search for new physics and document the validation of this re-implementation. This analysis targets, with 139 fb−1 of proton–proton collisions at a center-of-mass energy of 13 TeV recorded by the ATLAS detector, the electroweak pair production of supersymmetric charginos and sleptons when they further decay into a final state comprising a pair of leptons and missing energy. [...]
2020 - 12 p.
- Published in : Mod. Phys. Lett. A 36 (2021) 2141005
In : 2nd MadAnalysis 5 workshop on LHC recasting in Korea, Seoul, Korea, Republic of, 13 - 20 Feb 2020, pp.2141005
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2021-04-13
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Implementation of the ATLAS-SUSY-2018-31 analysis in the MadAnalysis 5 framework (sbottoms with multi-bottoms and missing transverse energy; 139 fb$^{−1}$)
/ Araz, Jack Y (Durham U., IPPP) ; Fuks, Benjamin (Paris, LPTHE ; Inst. U. de France)
We present the implementation, in the MadAnalysis 5 framework, of the ATLAS-SUSY-2018-31 search for new physics, and document the validation of this implementation. This analysis targets, with 139 fb−1 of proton–proton collisions at a center-of-mass energy of 13 TeV recorded by the ATLAS detector between 2015 and 2018, the production of a pair of supersymmetric bottom squarks when they further decay through a cascade decay involving the second lightest neutralino and a Standard Model Higgs boson. [...]
2020 - 12 p.
- Published in : Mod. Phys. Lett. A 36 (2021) 2141010
In : 2nd MadAnalysis 5 workshop on LHC recasting in Korea, Seoul, Korea, Republic of, 13 - 20 Feb 2020, pp.2141010
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2021-04-13
06:01 |
Outreach activities at LHCb
/ Santimaria, Marco (Frascati)
The LHCb collaboration has a wide outreach programme covering physics news, detector photos and videos, masterclasses and exhibitions at the CERN site. The presence on social media, and on web in general, is the first line in making the public aware of the experiment activities. [...]
SISSA, 2019 - 6 p.
- Published in : PoS EPS-HEP2019 (2020) 453
Fulltext: PDF;
In : European Physical Society Conference on High Energy Physics (EPS-HEP) 2019, Ghent, Belgium, 10 - 17 Jul 2019, pp.453
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2021-04-13
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Soft $b$-hadron tagging with the ATLAS detector
/ Yamazaki, Tomohiro (Tokyo U.)
/ATLAS Collaboration
The identification of $b$-hadrons at low $p_{\text{T}}$ can play a crucial role in a variety of analyses where soft $b$-hadrons are produced by physics beyond the Standard Model such as stop/sbottom production in compressed SUSY senarios, and also in analyses that require heavy flavour jet vetos.Such $b$-hadron identification is a particularly challenging task, owing to the relatively short decay length of such $b$-hadrons and difficulties identifying hadronic jets, and current flavour tagging algorithms are not tuned to identify such $b$-hadron decays.This article presents new developments for soft $b$-hadron tagging techniques based either on the presence of jets composed only of charged tracks, or on the identification of secondary vertices from the $b$-hadron decay without requiring the presence of a jet. The techniques are described and their performance is reviewed..
SISSA, 2019 - 6 p.
- Published in : PoS EPS-HEP2019 (2020) 208
In : European Physical Society Conference on High Energy Physics (EPS-HEP) 2019, Ghent, Belgium, 10 - 17 Jul 2019, pp.208
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2021-04-13
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The ENUBET Project. A high precision narrow-band neutrino beam
/ Brunetti, G (INFN, Padua) ; Acerbi, F (Fond. Bruno Kessler, Trento ; TIFPA-INFN, Trento) ; Ballerini, G (Insubria U., Como ; INFN, Milan Bicocca) ; Bonesini, M (INFN, Milan Bicocca) ; Branca, A (INFN, Padua ; Padua U.) ; Brizzolari, C (INFN, Milan Bicocca ; Milan Bicocca U.) ; Capelli, S (Insubria U., Como ; INFN, Milan Bicocca) ; Carturan, S (INFN, Legnaro) ; Catanesi, M G (INFN, Bari) ; Cecchini, S (INFN, Bologna) et al.
The knowledge of initial flux, energy and flavor of neutrino beams is currently the main limitation for a precise measurement of neutrino cross sections. The ENUBET project is studying a facility based on a narrow band neutrino beam capable of constraining the neutrino fluxes normalization through the monitoring of the associated charged leptons in an instrumented decay tunnel. [...]
SISSA, 2019 - 7 p.
- Published in : PoS EPS-HEP2019 (2020) 387
In : European Physical Society Conference on High Energy Physics (EPS-HEP) 2019, Ghent, Belgium, 10 - 17 Jul 2019, pp.387
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2021-04-13
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Coherent Meson Production in the NOMAD Experiment
/ Kullenberg, Chris (Dubna, JINR) ; Mishra, Sanjib (South Carolina U.)
We presented the measurements of coherent $\pi^0$, $\rho^+$ and $\rho^0$ meson production in the NOMAD experiment. The excellent angular and momentum resolutions of the NOMAD detector — based upon a low density design with $\rho \sim 0.1$ g/cm$^3$ — combined with a nuclear target predominantly made of carbon, result in an efficient selection of coherent processes with small background levels. [...]
SISSA, 2020 - 7 p.
- Published in : PoS EPS-HEP2019 (2020) 380
In : European Physical Society Conference on High Energy Physics (EPS-HEP) 2019, Ghent, Belgium, 10 - 17 Jul 2019, pp.380
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