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Evidence for the exclusive decay B(c)+- ---> J / psi pi+- and measurement of the mass of the B(c) meson

Abulencia A.
•
Acosta D.
•
Adelman J.
altro
SCURI, Fabrizio
2006
  • journal article

Periodico
PHYSICAL REVIEW LETTERS
Abstract
We report the first evidence for a fully reconstructed decay mode of the B(c)(+/-) meson in the channel B(c)(+/-)-> J/psi pi(+/-), with J/psi ->mu(+)mu(-). The analysis is based on an integrated luminosity of 360 pb(-1) in p (p) over bar collisions at 1.96 TeV center of mass energy collected by the Collider Detector at Fermilab. We observe 14.6 +/- 4.6 signal events with a background of 7.1 +/- 0.9 events, and a fit to the J/psi pi(+/-) mass spectrum yields a B(c)(+/-) mass of 6285.7 +/- 5.3(stat)+/- 1.2(syst) MeV/c(2). The probability of a peak of this magnitude occurring by random fluctuation in the search region is estimated as 0.012%.
DOI
10.1103/PhysRevLett.96.082002
WOS
WOS:000235736200017
Archivio
http://hdl.handle.net/11390/882752
info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-33644525615
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Scopus© citazioni
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Data di acquisizione
Jun 7, 2022
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Web of Science© citazioni
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Data di acquisizione
Mar 27, 2024
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Data di acquisizione
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