Search for a Low Mass Particle Decaying into mu(+)mu(-) in B-0 -} K*X-0 and B-0 -}rho X-0 at Belle

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F10%3A10062423" target="_blank" >RIV/00216208:11320/10:10062423 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Search for a Low Mass Particle Decaying into mu(+)mu(-) in B-0 -} K*X-0 and B-0 -}rho X-0 at Belle

Original language description

We search for dimuon decays of a low mass particle in the decays B-0 -} K*X-0 and B-0 -} rho X-0 using a data sample of 657 x 10(6)B (B) over bar events collected with the Belle detector at the KEKB asymmetric- energy e(+)e(-) collider. We find no evidence for such a particle in the mass range from 212 MeV/c(2) to 300 MeV/c(2) for lifetimes below 10(-12) s, and set upper limits on its branching fractions. In particular, we search for a particle with a mass of 214: 3 MeV/c(2) reported by the HyperCP experiment, and obtain upper limits on the products B(B-0 -} K*X-0) x B(X mu(+)mu(-)) { 2.26(2.27) x 10(-8) and B(B-0 -} rho X-0) x B(X -} mu(+)mu(-)) { 1.73(1.73) x 10(-8) at 90% C.L. for a scalar (vector) X particle.

Czech name

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Czech description

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Type

J_x - 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

<a href="/en/project/LA10033" target="_blank" >LA10033: Participation in the Belle a Belle II experiments: study of B-meson decays</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year

2010

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Physical Review Letters

ISSN

0031-9007

e-ISSN

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Volume of the periodical

105

Issue of the periodical within the volume

9

Country of publishing house

US - UNITED STATES

Number of pages

5

Pages from-to

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UT code for WoS article

000281229300002

EID of the result in the Scopus database

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