Precision physics withBs0→J/ψϕat the LHC: The quest for new physics

2008/10/23 by Sven Faller, Robert Fleischer, Thomas Mannel · 9 citations
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph

paper · pdf · doi:10.1103/physrevd.79.014005

published as Phys.Rev.D79:014005,2009 · 28 pages, 10 figures

arxiv created 2008/10/23 · openalex publication_date 2009/01/08 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

Abstract

CP-violating effects in the time-dependent angular distribution of the B_s⁰\ensuremath→J/\ensuremathψ[\ensuremath→\ensuremathℓ⁺\ensuremathℓ^\ensuremath-]\ensuremathφ[\ensuremath→K⁺K^\ensuremath-] decay products play a key r\^ole for the search of new physics. The hadronic standard-model uncertainties are related to doubly Cabibbo-suppressed penguin contributions and are usually assumed to be negligibly small. In view of recent results from the Tevatron and the quickly approaching start of the data taking at the LHC, we have a critical look at the impact of these terms, which could be enhanced through long-distance QCD phenomena, and explore the associated uncertainty for the measurement of the CP-violating B_s⁰\ensuremath-B_s⁰ mixing phase. We point out that these effects can actually be controlled by means of an analysis of the time-dependent angular distribution of the B_s⁰\ensuremath→J/\ensuremathψ[\ensuremath→\ensuremathℓ⁺\ensuremathℓ^\ensuremath-]K^*0[\ensuremath→\ensuremathπ⁺K^\ensuremath-] decay products and illustrate this through numerical studies. Moreover, we discuss SU(3)-breaking effects, which limit the theoretical accuracy of our method, and suggest internal consistency checks of SU(3).

Citations

• Averages of b-hadron and c-hadron Properties at the End of 2007

Cited by

• Branching ratios, CP asymmetries and polarizations of B→ ψ (2S) V B → ψ ( 2 S ) V decays
• Reducing Penguin Pollution
• Implications of LHCb measurements and future prospects
• Testing the standard model and searching for new physics with B d → ππ and B s → KK decays
• Measurement of the branching fraction and C P asymmetry in B ⁺ → J /ψ ρ ⁺ decays
• Measurement of the Bottom-Strange Meson Mixing Phase in the Full CDF Data Set
• Measurement of the CP -violating phaseϕsinB¯s0→J/ψπ+π−decays
• Exploring B→ π π , π K B → π π , π K decays at the high-precision frontier
• Measurement of the CP-violating weak phase ϕs and the decay width difference ΔΓs using the Bs0→J/ψ<mml:mspace width="0.2em"/>ϕ(1020) decay channel in pp collisions at s=8 TeV

Related

• Measurement of phi_s at LHCb
• Measurement of the CP violating phase ϕ_s and ϕ_s^sqq at LHCb
• CP violation in B⁰_s mixing with LHCb
• Testing new physics effects inB→K*ℓ+ℓ−
• Extracting gamma and Penguin Parameters from B⁰_s -> J/psi K_S