Search for a low-mass pseudoscalar Higgs boson produced in association with a bb‾ pair in pp collisions at √s=8 TeV
Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, cilt.758, ss.296-320, 2016 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 758
- Basım Tarihi: 2016
- Doi Numarası: 10.1016/j.physletb.2016.05.003
- Dergi Adı: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Sayfa Sayıları: ss.296-320
- Anahtar Kelimeler: CMS, Higgs, Physics
- Yıldız Teknik Üniversitesi Adresli: Evet
Özet
A search is reported for a light pseudoscalar Higgs boson decaying to a pair of τ leptons, produced in association with a bb‾ 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 fb−1. 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 product of cross section and branching fraction to τ pairs between 7 and 39 pb at the 95% confidence level. This excludes pseudoscalar A bosons with masses between 25 and 80 GeV, with SM-like Higgs boson negative couplings to down-type fermions, produced in association with bb‾ pairs, in Type II, two-Higgs-doublet models.