Probing CP violation in $B^0_s \rightarrow K^{0}_{\rm S} \pi^{+}\pi^{-}$ decays

Rafael Silva Coutinho; Thomas Latham; Tim Gershon

arxiv: 1411.2018 · v1 · pith:OLOMY27Jnew · submitted 2014-11-07 · ✦ hep-ph · hep-ex

Probing CP violation in B⁰_s rightarrow K⁰_(rm S) π⁺π⁻ decays

Tim Gershon , Thomas Latham , Rafael Silva Coutinho This is my paper

classification ✦ hep-ph hep-ex

keywords fitsdalitz-plotdecay-time-dependentflavourrightarrowstateviolationapproaches

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The three-body charmless hadronic decay $B^0_s \rightarrow K^{0}_{\rm S} \pi^{+}\pi^{-}$ provides a number of novel possibilities to search for CP violation effects and test the Standard Model of particle physics. These include fits to the Dalitz-plot distributions of the decay-time-integrated final state, decay-time-dependent (but without initial state flavour tagging) fits to the Dalitz-plot distribution, as well as full decay-time-dependent and flavour tagged fits. The relative sensitivities of these different approaches are investigated.

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Method to study $CP$ violation in $B_s^0\to K_S K^\pm \pi^\mp$ decays
hep-ph 2026-06 unverdicted novelty 7.0

A method is developed to relate amplitudes for B_s^0 → K_S K* resonances in the two final states, enabling the first tagged decay-time-dependent Dalitz analysis to measure the effective weak phase φ_s^eff.