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Title: Trapping penguins with entangled B mesons

Our first direct observation of time-reversal (T) violation in the BBsystem was reported by the BaBar Collaboration, employing the method of Bañuls and Bernabéu. Given this, we generalize their analysis of the time-dependent T-violating asymmetry (AT) to consider different choices of CP tags for which the dominant amplitudes have the same weak phase. As one application, we find that it is possible to measure departures from the universality of sin(2β)directly. If sin(2β)is universal, as in the Standard Model, the method permits the direct determination of penguin effects in these channels. This method, although no longer a strict test of T, can yield tests of the sin(2β)universality, or, alternatively, of penguin effects, of much improved precision even with existing data sets.
Authors:
 [1] ;  [1] ;  [1]
  1. Univ. of Kentucky, Lexington, KY (United States)
Publication Date:
OSTI Identifier:
1234185
Grant/Contract Number:
FG02-96ER40989
Type:
Published Article
Journal Name:
Physics Letters. Section B
Additional Journal Information:
Journal Volume: 754; Journal Issue: C; Journal ID: ISSN 0370-2693
Publisher:
Elsevier
Research Org:
Univ. of Kentucky, Lexington, KY (United States)
Sponsoring Org:
USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS