Search for supersymmetry in pp collisions at sqrt(s) = 8 TeV in events with a single lepton, large jet multiplicity, and multiple b jets

CMS Collaboration; Basegmez, Suzan; Beluffi, Camille; Bruno, Giacomo; Castello, Roberto; Caudron, Adrien; Ceard, Ludivine; Da Silveira, Gustavo Gil; Delaere, Christophe; Du Pree, Tristan; Favart, Denis; Forthomme, Laurent; Giammanco, Andrea; Hollar, Jonathan; Jez, Pavel; Lemaitre, Vincent; Liao, Junhui; Militaru, Otilia; Nuttens, Claude; Pagano, Davide

doi:10.1016/j.physletb.2014.04.023

Search for supersymmetry in pp collisions at sqrt(s) = 8 TeV in events with a single lepton, large jet multiplicity, and multiple b jets

CMS Collaboration

;

Basegmez, Suzan

;

Beluffi, Camille

;

Bruno, Giacomo

;

Bethani, Agni

;et.al.

(2014) Physics Letters. Section B: Nuclear, Elementary Particle and High-Energy Physics — Vol. B733, p. 328-353 (2014)

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Authors

CMS CollaborationUCLouvain
Author
Basegmez, SuzanUCLouvain
Author
Beluffi, CamilleUCLouvain
Author
Bruno, GiacomoUCLouvain
Author
Castello, RobertoUCLouvain
Author
Caudron, AdrienUCLouvain
Author
Ceard, LudivineUCLouvain
Author
Da Silveira, Gustavo GilUCLouvain
Author
Delaere, ChristopheUCLouvain
Author
Du Pree, TristanUCLouvain
Author
Favart, DenisUCLouvain
Author
Forthomme, LaurentUCLouvain
Author
Giammanco, AndreaUCLouvain
Author
Hollar, JonathanUCLouvain
Author
Jez, PavelUCLouvain
Author
Lemaitre, VincentUCLouvain
Author
Liao, JunhuiUCLouvain
Author
Militaru, OtiliaUCLouvain
Author
Nuttens, ClaudeUCLouvain
Author
Pagano, DavideUCLouvain
Author
Pin, ArnaudUCLouvain
Author
Piotrzkowski, KrzysztofUCLouvain
Author
Popov, AndreyUCLouvain
Author
Selvaggi, MicheleUCLouvain
Author
Vidal Maroño, MiguelUCLouvain
Author
Vizan Garcia, Jesús ManuelUCLouvain
Author
Quertenmont, LoïcUCLouvain
Author
Bethani, AgniUCLouvain
Author
et. al.

Abstract

Results are reported from a search for supersymmetry in pp collisions at a center-of-mass energy of 8 TeV, based on events with a single isolated lepton (electron or muon) and multiple jets, at least two of which are identified as b jets. The data sample corresponds to an integrated luminosity of 19.3 inverse femtobarns recorded by the CMS experiment at the LHC in 2012. The search is motivated by supersymmetric models that involve strong-production processes and cascade decays of new particles. The resulting final states contain multiple jets as well as missing transverse momentum from weakly interacting particles. The event yields, observed across several kinematic regions, are consistent with the expectations from standard model processes. The results are interpreted in the context of simplified supersymmetric scenarios with pair production of gluinos, where each gluino decays to a top quark-antiquark pair and the lightest neutralino. For the case of decays via virtual top squarks, gluinos with a mass smaller than 1.26 TeV are excluded for low neutralino masses.

Affiliations

UCLouvainSST/IRMP - Institut de recherche en mathématique et physique

Citations

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CMS Collaboration, Basegmez, S., Beluffi, C., Bruno, G., Castello, R., Caudron, A., Ceard, L., Da Silveira, G. G., Delaere, C., Du Pree, T., Favart, D., Forthomme, L., Giammanco, A., Hollar, J., Jez, P., Lemaitre, V., Liao, J., Militaru, O., Nuttens, C., et al. (2014). Search for supersymmetry in pp collisions at sqrt(s) = 8 TeV in events with a single lepton, large jet multiplicity, and multiple b jets. Physics Letters. Section B: Nuclear, Elementary Particle and High-Energy Physics, B733, 328-353. https://doi.org/10.1016/j.physletb.2014.04.023 (Original work published 2014)