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Title: Measurement of the B 0 s lifetime in the flavor-specific decay channel B 0 s → D - sμ +νX

Abstract

We present an updated measurement of the B 0 s lifetime using the semileptonic decays B 0 s → D - sμ +νX, with D s → 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 τ fs(B 0 s) = 1.479 ± 0.010(stat) ± 0.021(syst) ps. This technique is also used to determine the B 0 lifetime using the analogous B 0 → D μ +νX decay with D → Φπ and Φ → K +K , yielding τ(B 0) = 1.534 ± 0.019(stat) ± 0.021(syst) ps. Both measurements are consistent with the current world averages, and the B 0 s 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 τ fs(B 0 s)/τ(B 0) = 0.964 ± 0.013(stat) ± 0.007(syst).

Authors:
 [1]
  1. Joint Institute for Nuclear Research, Dubna (Russia). et al.
Publication Date:
Research Org.:
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
Contributing Org.:
D0 Collaboration
OSTI Identifier:
1226297
Alternate Identifier(s):
OSTI ID: 1180923
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
Resource Type:
Journal Article: 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)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS

Citation Formats

Abazov, Victor Mukhamedovich. Measurement of the B0s lifetime in the flavor-specific decay channel B0s → D-sμ+νX. United States: N. p., 2015. Web. doi:10.1103/PhysRevLett.114.062001.
Abazov, Victor Mukhamedovich. Measurement of the B0s lifetime in the flavor-specific decay channel B0s → D-sμ+νX. United States. doi:10.1103/PhysRevLett.114.062001.
Abazov, Victor Mukhamedovich. Mon . "Measurement of the B0s lifetime in the flavor-specific decay channel B0s → D-sμ+νX". United States. doi:10.1103/PhysRevLett.114.062001. https://www.osti.gov/servlets/purl/1226297.
@article{osti_1226297,
title = {Measurement of the B0s lifetime in the flavor-specific decay channel B0s → D-sμ+νX},
author = {Abazov, Victor Mukhamedovich},
abstractNote = {We present an updated measurement of the B0s lifetime using the semileptonic decays B0s → D-sμ+νX, with D–s → 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 → D–μ+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).},
doi = {10.1103/PhysRevLett.114.062001},
journal = {Physical Review Letters},
number = 6,
volume = 114,
place = {United States},
year = {Mon Feb 09 00:00:00 EST 2015},
month = {Mon Feb 09 00:00:00 EST 2015}
}

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