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Title
Evidence of a new narrow resonance decaying to χc1γ in B→χc1γK
Author(s)
V. Bhardwaj조기현
Publication Year
2013-04-14
Abstract
We report measurements of B→χc1γK and χc2γK decays using 772×106 BB¯ events collected at the Υ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider. Evidence of a new resonance in the χc1γ final state is found with a statistical significance of 3.8σ. This state has a mass of 3823.1±1.8(stat)±0.7(syst)  MeV/c2, a value that is consistent with theoretical expectations for the previously unseen 1D23 cc¯ meson. We find no other narrow resonance and set upper limits on the branching fractions of the X(3872)→χc1γ and χc2γ decays.
Keyword
High Energy Physics; Particle Physics; belle
Journal Title
Physical review letters
ISSN
0031-9007
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Appears in Collections:
7. KISTI 연구성과 > 학술지 발표논문
URI
https://repository.kisti.re.kr/handle/10580/14149
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