Search for a low-mass pseudoscalar Higgs boson produced in association with a b b-bar pair in pp collisions at sqrt(s) = 8 TeV

CMS; Basegmez, Suzan; Beluffi, Camille; Bondu, Olivier; Brochet, Sébastien; Bruno, Giacomo; Caudron, Adrien; Ceard, Ludivine; Da Silveira, Gustavo Gil; Delaere, Christophe; Favart, Denis; Forthomme, Laurent; Giammanco, Andrea; Hollar, Jonathan; Jafari, Abideh; Jez, Pavel; Komm, Matthias; Lemaitre, Vincent; Mertens, Alexandre; Nuttens, Claude

doi:10.1016/j.physletb.2016.05.003

Search for a low-mass pseudoscalar Higgs boson produced in association with a b b-bar pair in pp collisions at sqrt(s) = 8 TeV

CMS

;

Basegmez, Suzan

;

Beluffi, Camille

;

Bondu, Olivier

;

Vidal Maroño, Miguel

;et.al.

(2016) Physics Letters. Section B: Nuclear, Elementary Particle and High-Energy Physics — Vol. B758, n° 758, p. 296-320 (2016)

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Authors

CMSUCLouvain
Author
Basegmez, SuzanUCLouvain
Author
Beluffi, CamilleUCLouvain
Author
Bondu, OlivierUCLouvain
Author
Brochet, SébastienUCLouvain
Author
Bruno, GiacomoUCLouvain
Author
Caudron, AdrienUCLouvain
Author
Ceard, LudivineUCLouvain
Author
Da Silveira, Gustavo GilUCLouvain
Author
Delaere, ChristopheUCLouvain
Author
Favart, DenisUCLouvain
Author
Forthomme, LaurentUCLouvain
Author
Giammanco, AndreaUCLouvain
Author
Hollar, JonathanUCLouvain
Author
Jafari, AbidehUCLouvain
Author
Jez, PavelUCLouvain
Author
Komm, MatthiasUCLouvain
Author
Lemaitre, VincentUCLouvain
Author
Mertens, AlexandreUCLouvain
Author
Nuttens, ClaudeUCLouvain
Author
Perrini, LuciaUCLouvain
Author
Pin, ArnaudUCLouvain
Author
Piotrzkowski, KrzysztofUCLouvain
Author
Popov, AndreyUCLouvain
Author
Quertenmont, LoïcUCLouvain
Author
Selvaggi, MicheleUCLouvain
Author
Vidal Maroño, MiguelUCLouvain
Author
et. al.

Abstract

A search is reported for a light pseudoscalar Higgs boson decaying to a pair of tau leptons, produced in association with a b b-bar pair, in the context of two-Higgs-doublet models. The results are based on pp collision data at a centre-of-mass energy of 8 TeV collected by the CMS experiment at the LHC and corresponding to an integrated luminosity of 19.7 inverse femtobarns. Pseudoscalar boson masses between 25 and 80 GeV are probed. No evidence for a pseudoscalar boson is found and upper limits are set on the production cross section times branching fraction to tau pairs between 7 and 39 pb at the 95% confidence level. This excludes pseudoscalar A bosons with masses between 25 and 80 GeV, with standard model-like Higgs boson negative couplings to down-type fermions, produced in association with b b-bar pairs, in Type-II, two-Higgs-doublet models.

Affiliations

UCLouvainSST/IRMP - Institut de recherche en mathématique et physique

Citations

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FWB

CMS, Basegmez, S., Beluffi, C., Bondu, O., Brochet, S., Bruno, G., Caudron, A., Ceard, L., Da Silveira, G. G., Delaere, C., Favart, D., Forthomme, L., Giammanco, A., Hollar, J., Jafari, A., Jez, P., Komm, M., Lemaitre, V., Mertens, A., et al. (2016). Search for a low-mass pseudoscalar Higgs boson produced in association with a b b-bar pair in pp collisions at sqrt(s) = 8 TeV. Physics Letters. Section B: Nuclear, Elementary Particle and High-Energy Physics, B758(758), 296-320. https://doi.org/10.1016/j.physletb.2016.05.003 (Original work published 2016)