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Measurement of the t-??p-p+p-?t branching fraction and a search for a second-class current in the t-??'(958)p-?t decay

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posted on 2023-06-08, 07:28 authored by B Aubert, Fabrizio SalvatoreFabrizio Salvatore, BABAR Collaboration
The t-??p-p+p-?t decay with the ???? mode is studied using 384??fb-1 of data collected by the BABAR detector. The branching fraction is measured to be (1.60±0.05±0.11)×10-4. It is found that t-?f1(1285)p-?t??p-p+p-?t is the dominant decay mode with a branching fraction of (1.11±0.06±0.05)×10-4. The first error on the branching fractions is statistical and the second systematic. Note that no particle identification algorithm is applied to the charged tracks to distinguish pions from kaons. In addition, a 90% confidence level upper limit on the branching fraction of the t-??'(958)p-?t decay is measured to be 7.2×10-6. This last decay proceeds through a second-class current and is expected to be forbidden in the limit of isospin symmetry.

History

Publication status

  • Published

File Version

  • Published version

Journal

Physical Review D

ISSN

1550-7998

Publisher

American Physical Society

Issue

11

Volume

77

Page range

112002

Department affiliated with

  • Physics and Astronomy Publications

Full text available

  • Yes

Peer reviewed?

  • Yes

Legacy Posted Date

2012-02-06

First Open Access (FOA) Date

2016-03-22

First Compliant Deposit (FCD) Date

2016-11-17

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