Szczegóły publikacji
Opis bibliograficzny
Search for Higgs and Z boson decays to $J/\psi$ or Y pairs in the four-muon final state in proton-proton collisions at $\sqrt{s}$=13 TeV / A. M. Sirunyan, [et al.], V. AVATI, L. GRZANKA, M. MALAWSKI, [et al.] // Physics Letters . B ; ISSN 0370-2693. — 2019 — vol. 797 art. no. 134811, s. 1–22. — Bibliogr. s. 5–6, Abstr. — Publikacja dostępna online od: 2019-07-30
Autorzy (2337)
- AGHAvati Valentina
- AGHGrzanka Leszek
- AGHMalawski Maciej
- Sirunyan A. M.
Słowa kluczowe
Dane bibliometryczne
| ID BaDAP | 124242 |
|---|---|
| Data dodania do BaDAP | 2019-10-08 |
| Tekst źródłowy | URL |
| DOI | 10.1016/j.physletb.2019.134811 |
| Rok publikacji | 2019 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp |  |
| Creative Commons | |
| Czasopismo/seria | Physics Letters, B |
Abstract
A search for decays of the Higgs and Z boson to pairs of J/ψ or Y(nS) (n = 1, 2, 3) mesons, with their subsequent decay to μ+μ− pairs, is presented. The analysis uses data from proton-proton collisions at s=13TeV, collected with the CMS detector at the LHC in 2017 and corresponding to an integrated luminosity of 37.5fb−1. While an observation of such a decay with this sample would indicate the presence of physics beyond the standard model, no significant excess is observed. Upper limits at 95% confidence level are placed on the branching fractions of these decays. In the J/ψ pair channel, the limits are 1.8×10−3 and 2.2×10−6 for the Higgs and Z boson, respectively, while in the combined Y(nS) pair channel, the limits are 1.4×10−3 and 1.5×10−6, respectively, when the mesons from the Higgs and Z boson decay are assumed to be unpolarized. When fully longitudinal and transverse polarizations are considered the limits reduce by about 22–29% and increase by about 10–13%, respectively. © 2019 The Author(s)
