Measurement of the B¯(s)(0) effective lifetime in the J/ψf0(980) final state.

Journal article

The effective lifetime of the B ¯(s)(0) meson in the decay mode B¯(s)(0)→J/ψf(0)(980) is measured using 1.0 fb(-1) of data collected in pp collisions at √s=7 TeV with the LHCb detector. The result is 1.700±0.040±0.026 ps, where the first uncertainty is statistical and the second systematic. As the final state is CP-odd, and CP violation in this mode is measured to be small, the lifetime measurement can be translated into a measurement of the decay width of the heavy B¯(s)(0) mass eigenstate, Γ(H)=0.588±0.014±0.009 ps(-1).

Authors: Aaij, R; Abellan Beteta, C; Adametz, A; Adeva, B; Adinolfi, M

• Publication status: Published
• Journal: Physical Review Letters
• Volume: 109
• Issue: 15
• Pages: 152002
• Publication date: 2012-10-09
• DOI: 10.1103/physrevlett.109.152002
• EISSN: 1079-7114
• ISSN: 0031-9007
• Language: English
• Keywords: LHCb Collaboration