Extracting gamma and Penguin Topologies through CP Violation in B_s^0 -> J/psi K_S

Abstract

The B_s^0 -> J/psi K_S decay has recently been observed by the CDF collaboration and will be of interest for the LHCb experiment. This channel will offer a new tool to extract the angle gamma of the unitarity triangle and to control doubly Cabibbo-suppressed penguin corrections to the determination of sin(2beta) from the well-known B_d^0 -> J/psi K_S mode with the help of the U-spin symmetry of strong interactions. While any competitive determination of gamma is interesting, the latter aspect is particularly relevant as LHCb will enter a territory of precision which makes the control of doubly Cabibbo-suppressed Standard-Model corrections mandatory. Using the data from CDF and the e^+e^- B factories as a guideline, we explore the sensitivity for gamma and the penguin parameters and point out that the B_s^0-\bar B_s^0 mixing phase phi_s, which is only about -2 deg in the Standard Model but may be enhanced through new physics, is a key parameter for these analyses. We find that the mixing-induced CP violation S(B_s^0 -> J/psi K_S) shows an interesting correlation with sin(phi_s), which serves as a target region for the first measurement of this observable at LHCb.

arXiv comment20 pages, 8 figures

References in corpus (11)

• Waiting for the Top Quark Mass, K^+ --> π^+ ν\barν, B_s^0-\bar{B}_s^0 Mixing and CP Asymmetries in B-Decays
• In Pursuit of New Physics with B_s Decays
• Constraining the CKM angle $\gamma$ and penguin contributions through combined $B\to \pi K$ branching ratios
• Measurement of sigma(pp -> b anti-b X) at \sqrt(s)=7 TeV in the forward region
• Averages of b-hadron Properties at the End of 2005
• Probing New Physics through B Mixing: Status, Benchmarks and Prospects
• The Effect of Penguins in the B_d to J/psi K^0 CP asymmetry
• Extracting $\gamma$ from $B_{s(d)}\to J/\psi K_S$ and $B_{d(s)}\to D_{d(s)}^{+}{D}_{d(s)}^{-}$
• The Golden Modes B^0 -> J/psi K_{S,L} in the Era of Precision Flavour Physics
• $B_{s,d}\to \pi \pi ,\pi K,KK$: Status and Prospects
• New Strategy for B_s Branching Ratio Measurements and the Search for New Physics in B^0_s -> mu^+ mu^-

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