@misc{10481/76518,
year = {2022},
month = {7},
url = {http://hdl.handle.net/10481/76518},
abstract = {A search for long-lived charginos produced
either directly or in the cascade decay of heavy prompt
gluino states is presented. The search is based on proton–
proton collision data collected at a centre-of-mass energy
of
√
s = 13 TeV between 2015 and 2018 with the ATLAS
detector at the LHC, corresponding to an integrated luminosity
of 136 fb−1. Long-lived charginos are characterised
by a distinct signature of a short and then disappearing track,
and are reconstructed using at least four measurements in the
ATLAS pixel detector, with no subsequent measurements in
the silicon-microstrip tracking volume nor any associated
energy deposits in the calorimeter. The final state is complemented
by a large missing transverse-momentum requirement
for triggering purposes and at least one high-transversemomentum
jet. No excess above the expected backgrounds is
observed. Exclusion limits are set at 95% confidence level on
the masses of the chargino and gluino for different chargino
lifetimes.Chargino masses up to 660 (210)GeVare excluded
in scenarios where the chargino is a pure wino (higgsino).
For charginos produced during the cascade decay of a heavy
gluino, gluinos with masses below 2.1 TeV are excluded for
a chargino mass of 300 GeV and a lifetime of 0.2 ns.},
organization = {ANPCyT, Argentina},
organization = {YerPhI, Armenia},
organization = {ARC, Australia},
organization = {BMWFWandFWF,Austria},
organization = {ANAS, Azerbaijan},
organization = {SSTC, Belarus},
organization = {CNPq
and FAPESP, Brazil},
organization = {NSERC, NRC and CFI, Canada},
organization = {CERN; ANID,
Chile},
organization = {CAS, MOST and NSFC, China},
organization = {Minciencias, Colombia},
organization = {MSMT
CR,MPOCR and VSC CR, Czech Republic},
organization = {DNRF and DNSRC, Denmark},
organization = {IN2P3-CNRS and CEA-DRF/IRFU, France},
organization = {SRNSFG, Georgia},
organization = {BMBF, HGF andMPG,Germany},
organization = {GSRI, Greece},
organization = {RGC and HongKong
SAR, China},
organization = {ISF and Benoziyo Center, Israel},
organization = {INFN, Italy},
organization = {MEXT and
JSPS, Japan},
organization = {CNRST, Morocco},
organization = {NWO, Netherlands},
organization = {RCN, Norway},
organization = {MEiN, Poland},
organization = {FCT, Portugal},
organization = {MNE/IFA, Romania},
organization = {JINR},
organization = {MES of
Russia and NRC KI, Russian Federation},
organization = {MESTD, Serbia},
organization = {MSSR, Slovakia},
organization = {ARRS and MIZŠ, Slovenia},
organization = {DSI/NRF, South Africa},
organization = {MICINN,
Spain},
organization = {SRC and Wallenberg Foundation, Sweden},
organization = {SERI, SNSF and
Cantons of Bern and Geneva, Switzerland},
organization = {MOST, Taiwan},
organization = {TAEK,
Turkey},
organization = {STFC, UK},
organization = {DOE andNSF,USA},
organization = {BCKDF, CANARIE, Compute
Canada and CRC, Canada},
organization = {COST, ERC, ERDF, Horizon 2020 and
Marie Skłodowska-Curie Actions, European Union},
organization = {Investissements
d’Avenir Labex, Investissements d’Avenir Idex and ANR, France},
organization = {DFG
and AvH Foundation, Germany},
organization = {Herakleitos, Thales and Aristeia programmes
co-financed by EU-ESF and the Greek NSRF, Greece},
organization = {BSFNSF
and GIF, Israel},
organization = {Norwegian FinancialMechanism 2014-2021, Norway},
organization = {NCNandNAWA, Poland},
organization = {La Caixa Banking Foundation, CERCA
Programme Generalitat de Catalunya and PROMETEO and GenT Programmes
Generalitat Valenciana, Spain},
organization = {Göran Gustafssons Stiftelse,
Sweden},
organization = {The Royal Society and Leverhulme Trust, UK},
publisher = {Springer},
title = {Search for long-lived charginos based on a disappearing-track signature using 136 fb−1 of pp collisions at √ s = 13 TeV with the ATLAS detector},
doi = {10.1140/epjc/s10052-022-10489-5},
author = {Aad, G. and Aguilar Saavedra, Juan Antonio and Rodríguez Chala, Mikael and Atlas Collaboration},
}