Artículo

Lara, I.; López-Fogliani, D.E.; Muñoz, C.; Nagata, N.; Otono, H.; Ruiz De Austri, R. "Looking for the left sneutrino LSP with displaced-vertex searches" (2018) Physical Review D. 98(7)
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Abstract:

We analyze a displaced dilepton signal expected at the LHC for a tau left sneutrino as the lightest supersymmetric particle with a mass in the range 45-100 GeV. The sneutrinos are pair produced via a virtual W, Z or γ in the s channel and, given the large value of the tau Yukawa coupling, their decays into two dileptons or a dilepton plus missing transverse energy from neutrinos can be significant. 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 can reproduce the neutrino data. To probe the tau left sneutrinos we compare the predictions of this scenario with the ATLAS search for long-lived particles using displaced lepton pairs in pp collisions at s=8 TeV, allowing us to constrain the parameter space of the model. We also consider an optimization of the trigger requirements used in existing displaced-vertex searches by means of a high level trigger that exploits tracker information. This optimization is generically useful for a light metastable particle decaying into soft charged leptons. The constraints on the sneutrino turn out to be more stringent. We finally discuss the prospects for the 13 TeV LHC searches as well as further potential optimizations. © 2018 authors. Published by the American Physical Society.

Registro:

Documento: Artículo
Título:Looking for the left sneutrino LSP with displaced-vertex searches
Autor:Lara, I.; López-Fogliani, D.E.; Muñoz, C.; Nagata, N.; Otono, H.; Ruiz De Austri, R.
Filiación:Departamento de Física Teórica, Universidad Autónoma de Madrid (UAM), Campus de Cantoblanco, Madrid, 28049, Spain
Instituto de Física Teórica UAM-CSIC, Campus de Cantoblanco, Madrid, 28049, Spain
Instituto de Física de Buenos Aires UBA and CONICET, Departamento de Física, Facultad de Ciencia Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires, 1428, Argentina
Pontificia Universidad Católica Argentina, Buenos Aires, 1107, Argentina
Department of Physics, University of Tokyo, Tokyo, 113-0033, Japan
Research Center for Advanced Particle Physics, Kyushu University, Fukuoka, 819-0395, Japan
Instituto de Física Corpuscular CSIC-UV, c/Catedrático José Beltrán 2, Paterna, Valencia, 46980, Spain
Año:2018
Volumen:98
Número:7
DOI: http://dx.doi.org/10.1103/PhysRevD.98.075004
Título revista:Physical Review D
Título revista abreviado:Phy. Rev. D
ISSN:24700010
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_24700010_v98_n7_p_Lara

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Citas:

---------- APA ----------
Lara, I., López-Fogliani, D.E., Muñoz, C., Nagata, N., Otono, H. & Ruiz De Austri, R. (2018) . Looking for the left sneutrino LSP with displaced-vertex searches. Physical Review D, 98(7).
http://dx.doi.org/10.1103/PhysRevD.98.075004
---------- CHICAGO ----------
Lara, I., López-Fogliani, D.E., Muñoz, C., Nagata, N., Otono, H., Ruiz De Austri, R. "Looking for the left sneutrino LSP with displaced-vertex searches" . Physical Review D 98, no. 7 (2018).
http://dx.doi.org/10.1103/PhysRevD.98.075004
---------- MLA ----------
Lara, I., López-Fogliani, D.E., Muñoz, C., Nagata, N., Otono, H., Ruiz De Austri, R. "Looking for the left sneutrino LSP with displaced-vertex searches" . Physical Review D, vol. 98, no. 7, 2018.
http://dx.doi.org/10.1103/PhysRevD.98.075004
---------- VANCOUVER ----------
Lara, I., López-Fogliani, D.E., Muñoz, C., Nagata, N., Otono, H., Ruiz De Austri, R. Looking for the left sneutrino LSP with displaced-vertex searches. Phy. Rev. D. 2018;98(7).
http://dx.doi.org/10.1103/PhysRevD.98.075004