Publication

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(+)

Olivier Schneider, Guido Haefeli, Tatsuya Nakada, Yasmine Sara Amhis, Michel De Cian, Federico Leo Redi, Vladimir Macko, Pietro Marino, Violaine Bellée, Pavol Stefko, Alessio Ferrari, Luca Pescatore, Preema Rennee Pais, Guido Andreassi, François Fleuret, Maxime Schubiger, Chitsanu Khurewathanakul, Christoph Frei, Greig Alan Cowan, Vladislav Balagura, Jessica Prisciandaro, Mark Tobin, Mirco Dorigo, Sebastiana Gianì, Conor Thomas Fitzpatrick, Arnaud Merlin Gauthey, Matthieu Philippe Luther Marinangeli, Tommaso Colombo, Marco Calvi, Daniel Gallichan, Marilisa Neri, Jared Heath Delcamp, Severin Stähly, Michael Thompson McCann, Simon Van Mulders, Vincenzo Battista, Giovanni Veneziano, Matteo Fontana, Benedikt Sebastian Braun, Alexandra Bondarenko, Brice Emile Maurin, Nathalie Sophie Adeline Serra, Léonard Yannick Maurice Eymann, Adriano Pastore, Valérie Jeanne Thérèse Renaudin-Schouler, Ilya Komarov, Luc Henry, Xiao Yuan, Laia Castilla Amorós, Craig Matthew Smith, Basile Schäli, Juan Federico Esteban Müller, Nandita Aggarwal, Sattar Akbari Nakhjavani, Thomas Jean Julien Fussinger, Josiane Angèle Charlotte Smith-Clerc
2018
Journal Articles

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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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(+)

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