Reevaluating R-parity Violating Supersymmetry Effects in B_s^0-\bar{B}_s^0 Mixing

Understand

Recently, the CDF and D{\O} collaborations have claimed that the CP violating phase in $B_s^0-\bar{B}_s^0$ mixing is large, which is contrary to the expectations in the Standard Model.

• Such a large phase suggests New Physics contributions to $B_s^0-\bar{B}_s^0$ mixing.
• Motivated by this, we reevaluate the constraints on R-parity violating contributions, including baryon number violating couplings not considered before, to the mixing mass matrix element $M^s_{12}$ from the recent measurements of $B_s^0-\bar{B}_s^0$ mixing.
• We show that present data allow us to put quite strong constraints on both the magnitudes and the weak phases of the R-parity violating parameters.