Search for B+ -˃ e(+)nu(e) and B+ -˃ mu(+)nu(mu) decays using hadronic tagging

Title
Search for B+ -˃ e(+)nu(e) and B+ -˃ mu(+)nu(mu) decays using hadronic tagging
Authors
천병구
Keywords
LEPTONIC DECAYS; BELLE; IDENTIFICATION; VIOLATION; KEKB
Issue Date
2015-03
Publisher
AMER PHYSICAL SOC
Citation
PHYSICAL REVIEW D, v. 91, NO 5, Page. 52016-52016
Abstract
We present a search for the rare leptonic decays B+ -˃ e(+)nu(e) and B+ -˃ mu(+) nu(mu) using the full Upsilon(4S) data sample of 772 x 10(6) B (B) over bar pairs collected with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. One of the B mesons from the Upsilon(4S) -˃ B (B) over bar decay is fully reconstructed in a hadronic mode, while the recoiling side is analyzed for the signal decay. We find no evidence of a signal in any of the decay modes. Upper limits of the corresponding branching fractions are determined as beta(B+ -˃ e(+)nu(e)) ˂ 3.5 x 10(-6) and beta(B+ -˃ mu(+)nu(mu)) ˂ 2.7 x 10(-6) at 90% confidence level.
URI
http://journals.aps.org/prd/abstract/10.1103/PhysRevD.91.052016http://hdl.handle.net/20.500.11754/22788
ISSN
1550-7998; 1550-2368
DOI
http://dx.doi.org/10.1103/PhysRevD.91.052016
Appears in Collections:
COLLEGE OF NATURAL SCIENCES[S](자연과학대학) > PHYSICS(물리학과) > Articles
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