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Evidence for the decay B-0 -˃ p(p)over-bar pi(0)

Title
Evidence for the decay B-0 -˃ p(p)over-bar pi(0)
Author
천병구
Keywords
TOOL
Issue Date
2019-05
Publisher
AMER PHYSICAL SOC
Citation
PHYSICAL REVIEW D, v. 99, no. 9, no. 091104
Abstract
We report a search for the charmless baryonic decay B-0 -˃ p (p) over bar pi(0) with a data sample corresponding to an integrated luminosity of 711 fb(-1) containing (772 +/- 10) x 10(6) B (B) over bar pairs. The data were collected by the Belle experiment running on the Upsilon(4S) resonance at the KEKB e(+) e(-) collider. We measure a branching fraction B(B-0 -˃ p (p) over bar pi(0)) = (5.0 +/- 1.8 +/- 0.6) x 10(-7), where the first uncertainty is statistical and the second is systematic. The signal has a significance of 3.1 standard deviations and constitutes the first evidence for this decay mode. We also search for the intermediate two-body decays B-0 -˃ Delta(+)(p) over bar and B-0 -˃(Delta) over bar (-) p, and set an upper limit on the branching fraction, B(B-0 -˃ Delta(+)(p) over bar ) + B(B-0 -˃(Delta) over bar (-) p) ˂ 1.6 x 10(-6) at 90% confidence level.
URI
https://journals.aps.org/prd/abstract/10.1103/PhysRevD.99.091104https://repository.hanyang.ac.kr/handle/20.500.11754/151133
ISSN
2470-0010; 2470-0029
DOI
10.1103/PhysRevD.99.091104
Appears in Collections:
COLLEGE OF NATURAL SCIENCES[S](자연과학대학) > PHYSICS(물리학과) > Articles
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