Search for phenomena beyond the Standard Model in events with large b-jet multiplicity using the ATLAS detector at the LHC
Search for phenomena beyond the Standard Model in events with large b-jet multiplicity using the ATLAS detector at the LHC
复制标题
使用 LHC 的 ATLAS 探测器在具有大量 b 射流多重性的事件中搜索超出标准模型的现象
DOI:
10.1140/epjc/s10052-020-08730-0
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发表时间:
2021
期刊:
影响因子:
--
通讯作者:
Aad G
中科院分区:
文献类型:
--
作者:
Aad G
Events with a large number of high-$ p_ {\text {T}} $$ b $-jets are rare in the Standard Model (SM); an excess of events with such topology would be a signal of phenomena beyond the SM. One phenomenon where a large excess is expected is a variant of Supersymmetry in which R-parity is violated, allowing baryon number violating decays of the super partners of the SM particles. This document presents the search for physics beyond the SM in events with at least eight jets and at least six $ b $-jets. It was performed using Run 2 data collected by the ATLAS detector corresponding to an integrated luminosity of 139 fb $^{-1} $ of $ pp $ collisions at a center-of-mass energy of $\sqrt {s}= 13$ TeV. We consider specifically the production of a pair of heavy top squarks which decay to a $ b $-quark and a chargino, which in turn decays into $ bbs $ via a virtual top squark. The most dominant source of background is multijet production, estimated using a data-driven technique. A fit is performed to estimate the expected sensitivity of the signal strength. Expected and observed 95$\% $ CL upper limits are set based on the top squark and chargino masses.
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影响因子:
8.6
作者:
M. Czakon;P. Fiedler;A. Mitov
通讯作者:
M. Czakon;P. Fiedler;A. Mitov
影响因子:
5.4
作者:
M. Czakon;A. Mitov
通讯作者:
M. Czakon;A. Mitov
DOI:
10.23731/cyrm-2017-002
发表时间:
2016-10
期刊:
--
影响因子:
--
作者:
D. D. Florian-D.;Christophe Grojean;F. Maltoni;C. Mariotti;A. Nikitenko;M. Pieri;P. Savard;M. Schuma
通讯作者:
D. D. Florian-D.;Christophe Grojean;F. Maltoni;C. Mariotti;A. Nikitenko;M. Pieri;P. Savard;M. Schuma
影响因子:
4.4
作者:
Aad, G.;Abbott, B.;Zwalinski, L.
通讯作者:
Zwalinski, L.
DOI:
10.3204/desy-proc-2013-03/kidonakis
发表时间:
2013-11
期刊:
arXiv: High Energy Physics - Phenomenology
影响因子:
--
作者:
N. Kidonakis
通讯作者:
N. Kidonakis