B0s lifetime measurement in the CP-odd decay channel B0s→J/ψ f0(980)

0470492 - FZÚ 2017 RIV US eng J - Článek v odborném periodiku
Abazov, V. M. - Abbott, B. - Acharya, B.S. - Kupčo, Alexander - Lokajíček, Miloš - Royon, C. … celkem 370 autorů
B0s lifetime measurement in the CP-odd decay channel B0s→J/ψ f0(980).
Physical Review D. Roč. 94, č. 1 (2016), 1-7, č. článku 012001. ISSN 2470-0010. E-ISSN 2470-0029
Grant CEP: GA MŠMT(CZ) LG15047; GA MŠMT LM2015068
Institucionální podpora: RVO:68378271
Klíčová slova: CP violation * B/s0 * lifetime * mass spectrum * (pi+ pi-) * DZERO * Batavia TEVATRON Coll
Kód oboru RIV: BF - Elementární částice a fyzika vys. energií
Impakt faktor: 4.557, rok: 2016

The lifetime of the Bs0 meson is measured in the decay channel Bs0→J/ψπ+π- with 880≤Mπ+π-≤1080  MeV/c2, which is mainly a CP-odd state and dominated by the f0(980) resonance. In 10.4  fb-1 of data collected with the D0 detector in Run II of the Tevatron, the lifetime of the Bs0 meson is measured to be τ(Bs0)=1.70±0.14(stat)±0.05(syst)  ps. Neglecting CP violation in Bs0/B¯s0 mixing, the measurement can be translated into the width of the heavy mass eigenstate of the Bs0, ΓH=0.59±0.05(stat)±0.02(syst)  ps-1.

Trvalý link: http://hdl.handle.net/11104/0268114