Artículos de revistas
Search for a low-mass tau(-)tau(+) resonance in association with a bottom quark in proton-proton collisions at root s=13 TeV
Fecha
2019-05-31Registro en:
Journal Of High Energy Physics. New York: Springer, n. 5, 41 p., 2019.
1029-8479
10.1007/JHEP05(2019)210
WOS:000471627800001
Autor
Yerevan Phys Inst
Inst Hochenergiephys
Inst Nucl Problems
Univ Antwerp
Vrije Univ Brussel
Univ Libre Bruxelles
Univ Ghent
Univ Catholic Louvain
Ctr Brasileiro Pesquisas Fis
Universidade do Estado do Rio de Janeiro (UERJ)
Universidade Estadual Paulista (Unesp)
Universidade Federal do ABC (UFABC)
Bulgarian Acad Sci
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Beihang Univ
Inst High Energy Phys
Peking Univ
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Arab Republ Egypt
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Institución
Resumen
A general search is presented for a low-mass (-+) resonance produced in association with a bottom quark. The search is based on proton-proton collision data at a center-of-mass energy of 13 TeV collected by the CMS experiment at the LHC, corresponding to an integrated luminosity of 35.9 fb(-1). The data are consistent with the standard model expectation. Upper limits at 95% confidence level on the cross section times branching fraction are determined for two signal models: a light pseudoscalar Higgs boson decaying to a pair of leptons produced in association with bottom quarks, and a low-mass boson X decaying to a -lepton pair that is produced in the decay of a bottom-like quark B such that B bX. Masses between 25 and 70 GeV are probed for the light pseudoscalar boson with upper limits ranging from 250 to 44 pb. Upper limits from 20 to 0.3 pb are set on B masses between 170 and 450 GeV for X boson masses between 20 and 70 GeV.