Testing the superweak theory of CP violation in neutral B decays

Technical Report · Tue Jan 21 04:00:00 EST 1992

DOI:https://doi.org/10.2172/10176938· OSTI ID:10176938

Soares, J M; Wolfenstein, L

In order to rule out the superweak theory for CP violation, future experiments will try to find a difference between the CP-violating asymmetries in the decays B{sup 0} {yields} {psi} K{sub s} and B{sup 0} {yields} {pi}{sup +}{pi}{sup {minus}}. However, Winstein recently noted that, for some acceptable values of the CKM parameters, the standard model would give equal asymmetry parameters for these decays just as the superweak theory does. In this paper we show that, by considering both tree and penguin contributions to the decay amplitudes, the test can still be effective if a third asymmetry is measured with enough precision.

• Research Organization: Carnegie-Mellon Univ., Pittsburgh, PA (United States). Dept. of Physics
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: FG02-91ER40682; AC02-76ER03066
• OSTI ID: 10176938
• Report Number(s): DOE/ER/40682--23; CMU-HEP--92-01; ON: DE93018866
• Country of Publication: United States
• Language: English

Related Subjects

662120
662350
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
B MESONS
BRANCHING RATIO
CP INVARIANCE
DECAYS OF MESONS
HAMILTONIANS
KOBAYASHI-MASKAWA MATRIX
SYMMETRY BREAKING
SYMMETRY
CONSERVATION LAWS
CURRENTS AND THEIR PROPERTIES
TESTING
WEAK PARTICLE DECAY