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  4. Measurement of the branching fraction for the decay Υ(4S) →Υ(1S)π+π-
 
research article

Measurement of the branching fraction for the decay Υ(4S) →Υ(1S)π+π-

Sokolov, A.
•
Shapkin, M.
•
Aihara, H.
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2009
Physical Review D [1970-2015]

We study transitions between Υ states with the emission of charged pions using 604.6fb-1 of data collected with the Belle detector at the KEKB asymmetric-energy e+e- collider. The measured product branching fraction is B(Υ(4S)→Υ(1S)π+π-)×B(Υ(1S)→μ+μ-)=(2. 11±0.30(stat)±0.14(sys))×10-6 and the partial decay width is Γ(Υ(4S)→Υ(1S)π+π-)=(1.75±0.25(stat)±0. 24(sys))keV. © 2009 The American Physical Society.

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Type
research article
DOI
10.1103/PhysRevD.79.051103
Web of Science ID

WOS:000264762400003

Scopus ID

2-s2.0-64149100648

Author(s)
Sokolov, A.
Shapkin, M.
Aihara, H.
Arinstein, K.
Aushev, T.
Bakich, A.M.
Barberio, E.
Bay, A.  
Belous, K.
Bhardwaj, V.
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Date Issued

2009

Publisher

American Physical Society

Published in
Physical Review D [1970-2015]
Volume

79

Issue

5

Article Number

051103(R)

Subjects

Belle

•

Identification

•

Transitions

•

Kekb

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/20.500.14299/56849
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