Friday, February 3, 2012

1202.0486 (Atsushi Hayakawa et al.)

Squark flavor mixing and CP asymmetry of neutral $B$ mesons at LHCb    [PDF]

Atsushi Hayakawa, Yusuke Shimizu, Morimitsu Tanimoto, Kei Yamamoto
The CP violation of the neutral $B$ meson is the important phenomenon to
search for the new physics. The like-sign dimuon charge asymmetry observed by
the D$\O$ Collaboration indicates the CP-violating new physics in the $B_s-\bar
B_s$ mixing. On the other hand, LHCb observed the CP-violating asymmetry in
$B_s^0\to J/\psi \phi$ and $B_s^0\to J/\psi f_0(980)$, which is consistent with
the SM prediction. However, there is still room for new physics of the CP
violation. The CKMfitter has presented the allowed region of the new physics
parameters taking account of the LHCb data. Based on these results, we discuss
the effect of the squark flavor mixing on the CP violation in the $B_d$ and
$B_s$ mesons. We predict asymmetries in the non-leptonic decays $B_d^0\to \phi
K_S$, $B_d^0\to \eta 'K^0$, $B_s^0\to \phi \phi$ and $B_s^0\to \phi \eta '$.
View original: http://arxiv.org/abs/1202.0486

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