The time-integrated untagged Dalitz plot of the three-body hadronic charmless decay (B) over bar (0) -> K-S(0)pi(+)pi(-) is studied using a pp collision data sample recorded with the LHCb detector, corresponding to an integrated luminosity of 3.0 fb(-1). The decay amplitude is described with an isobar model. Relative contributions of the isobar amplitudes to the (B) over bar (0) -> K-S(0)pi(+)pi(-) decay branching fraction and CP asymmetries of the flavor-specific amplitudes are measured. The CP asymmetry between the conjugate (B) over bar (0) -> K* (892)(-)pi(+) and (B) over bar (0) -> K* (892)(-)pi(+) decay rates is determined to be -0.308 +/- 0.062.

Amplitude Analysis of the Decay (B)over-bar(0) -> K-S(0)pi(+)pi(-) and First Observation of the CP Asymmetry in (B)over-bar(0) -> K* (892)(-)pi(+)

Gallorini, S.;Lucchesi, D.;Lupato, A.;Sestini, L.;Simi, G.;
2018

Abstract

The time-integrated untagged Dalitz plot of the three-body hadronic charmless decay (B) over bar (0) -> K-S(0)pi(+)pi(-) is studied using a pp collision data sample recorded with the LHCb detector, corresponding to an integrated luminosity of 3.0 fb(-1). The decay amplitude is described with an isobar model. Relative contributions of the isobar amplitudes to the (B) over bar (0) -> K-S(0)pi(+)pi(-) decay branching fraction and CP asymmetries of the flavor-specific amplitudes are measured. The CP asymmetry between the conjugate (B) over bar (0) -> K* (892)(-)pi(+) and (B) over bar (0) -> K* (892)(-)pi(+) decay rates is determined to be -0.308 +/- 0.062.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11577/3291739
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