Evidence of a New Narrow Resonance Decaying to chi(c1)gamma in B -> chi(c1)gamma K

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F13%3A10193201" target="_blank" >RIV/00216208:11320/13:10193201 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1103/PhysRevLett.111.032001" target="_blank" >http://dx.doi.org/10.1103/PhysRevLett.111.032001</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/PhysRevLett.111.032001" target="_blank" >10.1103/PhysRevLett.111.032001</a>

Result language
angličtina
Original language name
Evidence of a New Narrow Resonance Decaying to chi(c1)gamma in B -> chi(c1)gamma K
Original language description
We report measurements of B -> chi(c1)gamma K and chi(c2)gamma K decays using 772 x 10(6) B((B) over bar) events collected at the Y(4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. Evidence of a new resonance in thechi(c1)gamma final state is found with a statistical significance of 3.8 sigma. This state has a mass of 3823.1 +/- 1.8(stat) +/- 0.7(syst) Mev/c(2), a value that is consistent with theoretical expectations for the previously unseen 1(3)D(2) c((c) over bar) meson. We find no other narrow resonance and set upper limits on the branching fractions of the X(3872) -> chi(c1)gamma and chi(c2)gamma decays.
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BF - Elementary particle theory and high energy physics
OECD FORD branch
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Project
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Continuities
Z - Vyzkumny zamer (s odkazem do CEZ)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2013
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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