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Title: Search for B−→Λ¯pν¯ν with the BaBar experiment
Author: BABAR Collaboration
Graugés Pous, Eugeni
Keywords: Hadrons
Mesons (Física nuclear)
Física de partícules
Mesons (Nuclear physics)
Particle physics
Issue Date: 6-Dec-2019
Publisher: American Physical Society
Abstract: A search for the rare flavor-changing neutral current process B-→Λpνν using data from the BABAR experiment has been performed. A total of 424 fb-1 of e+e-collision data collected at the center-of-mass energy of the Ï'(4S) resonance is used in this study, corresponding to a sample of (471±3)×106 BB pairs. Signal B-→Λpνν candidates are identified by first fully reconstructing a B+ decay in one of many possible exclusive decays to hadronic final states, then examining detector activity that is not associated with this reconstructed B+ decay for evidence of a signal B-→Λpνν decay. The data yield is found to be consistent with the expected background contribution under a null signal hypothesis, resulting in an upper limit of B(B-→Λpνν)<3.0×10-5 at the 90% confidence level
Note: Reproducció del document publicat a:
It is part of: Physical Review D, 2019, vol. 100, num. 11, p. 111101
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ISSN: 1550-7998
Appears in Collections:Articles publicats en revistes (Física Quàntica i Astrofísica)

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