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Title: Measurement of the B0s lifetime in the flavor-specific decay channel B0s → D-sμ+νX

We present an updated measurement of the B0s lifetime using the semileptonic decays B0s → D-sμ+νX, with Ds → π and Φ → K+K (and the charge conjugate process). This measurement uses the full Tevatron Run II sample of proton-antiproton collisions at √s = 1.96 TeV, comprising an integrated luminosity of 10.4 fb–1. We find a flavor-specific lifetime τfs(B0s) = 1.479 ± 0.010(stat) ± 0.021(syst) ps. This technique is also used to determine the B0 lifetime using the analogous B0 → Dμ+νX decay with D → Φπ and Φ → K+K, yielding τ(B0) = 1.534 ± 0.019(stat) ± 0.021(syst) ps. Both measurements are consistent with the current world averages, and the B0s lifetime measurement is one of the most precise to date. As a result, taking advantage of the cancellation of systematic uncertainties, we determine the lifetime ratio τfs(B0s)/τ(B0) = 0.964 ± 0.013(stat) ± 0.007(syst).
Authors:
 [1]
  1. Joint Institute for Nuclear Research, Dubna (Russia). et al.
Publication Date:
OSTI Identifier:
1226297
Report Number(s):
FERMILAB-PUB--14-388-E
Journal ID: ISSN 0031-9007; PRLTAO; arXiv eprint number arXiv:1410.1568; TRN: US1600794
Grant/Contract Number:
AC02-07CH11359
Type:
Accepted Manuscript
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 114; Journal Issue: 6; Journal ID: ISSN 0031-9007
Publisher:
American Physical Society (APS)
Research Org:
Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)
Sponsoring Org:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
Contributing Orgs:
D0 Collaboration
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS