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research article

Search for charmonium and charmoniumlike states in Υ(1S) radiative decays

Shen, C.
•
Wang, X.
•
Yuan, C.
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2010
Physical Review D [1970-2015]

Using a sample of 102 X 10(6) Y(1S) events collected with the Belle detector, we report on the first search for charge-parity-even charmonium and charmoniumlike states in Y(1S) radiative decays. No significant chi(cJ) or eta(c) signal is observed and 90% C. L. limits on B(Y(1S) -> gamma chi(c0)) < 6.5 X 10(-4), B(Y(1S) -> gamma chi(c1)) < 2.3 X 10(-5), B(Y(1S) -> gamma chi(c2)) < 7.6 X 10(-6), and B(Y(1S) -> gamma eta(c)) < 5.7 X 10(-5) are obtained. The product branching fraction limits B(Y(1S) -> gamma X(3872))B(X(3872) -> pi(+) pi(-) J/psi) < 1.6 X 10(-6), B(Y(1S) -> gamma X(3872))B(X(3872) -> pi+ pi(-) pi(0) J/psi) < 2.8 X 10(-6), B(Y(1S) -> gamma X(3915)) B(X(3915) -> omega J/psi) < 3.0 X 10(-6), and B(Y(1S) -> gamma Y(4140))B(Y(4140) -> phi J/psi) < 2.2 X 10(-6) are obtained at the 90% C.L. Furthermore, no evidence is found for excited charmonium states below 4.8 GeV/c(2).

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Type
research article
DOI
10.1103/PhysRevD.82.051504
Web of Science ID

WOS:000282046500001

Author(s)
Shen, C.
Wang, X.
Yuan, C.
Wang, P.
Adachi, I.
Aihara, H.
Aushev, T.
Bakich, A.
Balagura, V.
Belous, K.
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Corporate authors
The Belle Collaboration
Date Issued

2010

Publisher

American Physical Society

Published in
Physical Review D [1970-2015]
Volume

82

Issue

5

Article Number

051504(R)

Subjects

Belle

Editorial or Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
LPHE  
Available on Infoscience
November 5, 2010
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/56954
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