TY - JOUR
T1 - Searching for stop LSP at the LHC
AU - Kpatcha, Essodjolo
AU - Lara, Iñaki
AU - López-Fogliani, Daniel E.
AU - Muñoz, Carlos
AU - Nagata, Natsumi
AU - Otono, Hidetoshi
N1 - Funding Information:
The work of E.K.and C.M. was partially supported by the Spanish Research Agency through the grants IFT Centro de Excelencia Severo Ochoa No CEX2020-001007-S and PGC2018-095161-B-I00. They are funded by MCIN/AEI/10.13039/501100011033 and the second grant also by ERDF “A way of making Europe”. The work of E.K. was supported by the grant “Margarita Salas” for the training of young doctors (CA1/RSUE/2021-00899), co-financed by the Ministry of Universities, the Recovery, Transformation and Resilience Plan, and the Autonomous University of Madrid. The work of I.L. was funded by the Norwegian Financial Mechanism 2014-2021, grant DEC-2019/34/H/ST2/00707. The work of D.L. was supported by the Argentinian CONICET, and also through PIP 11220170100154CO. The work of N.N. was supported in part by the Grant-in-Aid for Young Scientists (No. 21K13916), Innovative Areas (No. 18H05542), and Scientific Research B (No. 20H01897).
Publisher Copyright:
© 2022, The Author(s).
PY - 2022/3
Y1 - 2022/3
N2 - We analyze relevant signals expected at the LHC for a stop as the lightest supersymmetric particle (LSP). The discussion is carried out in the framework of the μνSSM, where the presence of R-parity violating couplings involving right-handed neutrinos solves the μ-problem and reproduces neutrino data. The stops are pair produced at the LHC, decaying with displaced vertices to a lepton and a bottom quark or a neutrino and a top quark. We compare the predictions of this scenario with ATLAS and CMS searches for long-lived particles. To analyze the parameter space we sample the μνSSM for a stop LSP using a likelihood data-driven method, and paying special attention to reproduce the current experimental data on neutrino and Higgs physics, as well as flavor observables. Our results translate into a lower limit on the mass of the left (right) stop LSP of 1068 GeV (1341 GeV), corresponding to a decay length of 1.86 mm (6.61 mm).
AB - We analyze relevant signals expected at the LHC for a stop as the lightest supersymmetric particle (LSP). The discussion is carried out in the framework of the μνSSM, where the presence of R-parity violating couplings involving right-handed neutrinos solves the μ-problem and reproduces neutrino data. The stops are pair produced at the LHC, decaying with displaced vertices to a lepton and a bottom quark or a neutrino and a top quark. We compare the predictions of this scenario with ATLAS and CMS searches for long-lived particles. To analyze the parameter space we sample the μνSSM for a stop LSP using a likelihood data-driven method, and paying special attention to reproduce the current experimental data on neutrino and Higgs physics, as well as flavor observables. Our results translate into a lower limit on the mass of the left (right) stop LSP of 1068 GeV (1341 GeV), corresponding to a decay length of 1.86 mm (6.61 mm).
UR - http://www.scopus.com/inward/record.url?scp=85127273302&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85127273302&partnerID=8YFLogxK
U2 - 10.1140/epjc/s10052-022-10216-0
DO - 10.1140/epjc/s10052-022-10216-0
M3 - Article
AN - SCOPUS:85127273302
SN - 1434-6044
VL - 82
JO - European Physical Journal C
JF - European Physical Journal C
IS - 3
M1 - 261
ER -