Measurement of the B.sup.±./sup..sub.c./sub. production cross section in pp¯ collisions at √s=1.96 TeV

0501358 - FZÚ 2019 RIV US eng J - Článek v odborném periodiku
Aaltonen, T. - Amerio, S. - Amidei, D. - Lysák, Roman … celkem 398 autorů
Measurement of the B^±_c production cross section in pp¯ collisions at √s=1.96 TeV.
Physical Review D. Roč. 93, č. 5 (2016), s. 1-27, č. článku 052001. ISSN 2470-0010. E-ISSN 2470-0029
Institucionální podpora: RVO:68378271
Klíčová slova: Batavia TEVATRON Coll * CDF * experimental results * transverse * rapidity
Obor OECD: Particles and field physics
Impakt faktor: 4.557, rok: 2016

We describe a measurement of the ratio of the cross sections times branching fractions of the Bc+ meson in the decay mode Bc+→J/ψμ+ν to the B+ meson in the decay mode B+→J/ψK+ in proton-antiproton collisions at center-of-mass energy s=1.96  TeV. The measurement is based on the complete CDF Run II data set, which comes from an integrated luminosity of 8.7  fb-1. The ratio of the production cross sections times branching fractions for Bc+ and B+ mesons with momentum transverse to the beam greater than 6  GeV/c and rapidity magnitude smaller than 0.6 is 0.211±0.012(stat)-0.020+0.021(syst). Using the known B+→J/ψK+ branching fraction, the known B+ production cross section, and a selection of the predicted Bc+→J/ψμ+ν branching fractions, the range for the total Bc+ production cross section is estimated.
Trvalý link: http://hdl.handle.net/11104/0293344