Search for production of an Υ (1S) meson in association with a W or Z boson using the full 1.96 TeV pp ¯ collision data set at CDF

0522392 - FZÚ 2020 RIV US eng J - Článek v odborném periodiku
Aaltonen, T. - Amerio, S. - Amidei, D. - Lysák, Roman … celkem 402 autorů
Search for production of an Υ (1S) meson in association with a W or Z boson using the full 1.96 TeV pp ¯ collision data set at CDF.
Physical Review D. Roč. 91, č. 5 (2015), s. 1-10, č. článku 052011. ISSN 2470-0010. E-ISSN 2470-0029
Institucionální podpora: RVO:68378271
Klíčová slova: CDF * Batavia TEVATRON Coll * quantum chromodynamics: nonrelativistic * vector boson: associated production * experimental results * 1960 GeV-cms
Obor OECD: Condensed matter physics (including formerly solid state physics, supercond.)
Impakt faktor: 4.506, rok: 2015
Způsob publikování: Omezený přístup
https://doi.org/10.1103/physrevd.91.052011

Production of the Υ(1S) meson in association with a vector boson is a rare process in the standard model with a cross section predicted to be below the sensitivity of the Tevatron. Observation of this process could signify contributions not described by the standard model or reveal limitations with the current nonrelativistic quantum-chromodynamic models used to calculate the cross section. We perform a search for this process using the full Run II data set collected by the CDF II detector corresponding to an integrated luminosity of 9.4  fb-1. The search considers the Υ→μμ decay and the decay of the W and Z bosons into muons and electrons. In these purely leptonic decay channels, we observe one ΥW candidate with an expected background of 1.2±0.5 events, and one ΥZ candidate with an expected background of 0.1±0.1 events.
Trvalý link: http://hdl.handle.net/11104/0306892