CP Asymmetry in B_d --> phi K_S: Standard Model Pollution

Details CP Asymmetry in B_d --> phi K_S: Standard Model Pollution CP Asymmetry in B_d --> phi K_S: Standard Model Pollution

1997-08-11

arxiv.org/abs/hep-ph/9708305v1

Phys.Rev. D58 (1998) 057504

Physics

High Energy Physics

High Energy Physics - Phenomenology

9 pages, Revtex

Scientific paper

10.1103/PhysRevD.58.057504

The difference in the time dependent CP asymmetries between the modes $B --> psi K_S$ and $B --> phi K_S$ is a clean signal for physics beyond the Standard Model. This interpretation could fail if there is a large enhancement of the matrix element of the $b --> u ubar s$ operator between the $B_d$ initial state and the $phi K_S$ final state. We argue against this possibility and propose some experimental tests that could shed light on the situation.

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