Publication

Measurement of the Omega(0)(c) Baryon Lifetime

Olivier Schneider, Guido Haefeli, Tatsuya Nakada, Yasmine Sara Amhis, Michel De Cian, Federico Leo Redi, Vladimir Macko, Pietro Marino, Tara Nanut, Violaine Bellée, Pavol Stefko, Alessio Ferrari, Guillaume Max Pietrzyk, Luca Pescatore, Preema Rennee Pais, Guido Andreassi, François Fleuret, Maxime Schubiger, Chitsanu Khurewathanakul, Christoph Frei, Greig Alan Cowan, Vladislav Balagura, Ian William Marison, Jessica Prisciandaro, Mark Tobin, Mirco Dorigo, Sebastiana Gianì, Conor Thomas Fitzpatrick, Arnaud Merlin Gauthey, Matthieu Philippe Luther Marinangeli, Tommaso Colombo, Marco Calvi, Daniel Gallichan, Mai Tu Xuan, 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, Luc Henry, Xiao Yuan, Laia Castilla Amorós, Craig Matthew Smith, Basile Schäli, Juan Federico Esteban Müller, Nandita Aggarwal, Sattar Akbari Nakhjavani, Gang Yu, Thomas Jean Julien Fussinger
2018
Journal Articles

Abstract

We report a measurement of the lifetime of the Omega(0)(c) baryon using proton-proton collision data at center-of-mass energies of 7 and 8 TeV, corresponding to an integrated luminosity of 3.0 fb(-1) collected by the LHCb experiment. The sample consists of about 1000 Omega(-)(b) -> Omega(0)(c)mu(-)nu X-mu signal decays, where the Omega(0)(c) baryon is detected in the pK(-)K(-)pi(+) thorn final state and X represents possible additional undetected particles in the decay. The Omega(0)(c) lifetime is measured to be tau(Omega c0) = 268 +/- 24 +/- 10 +/- 2 fs, where the uncertainties are statistical, systematic, and from the uncertainty in the D+ lifetime, respectively. This value is nearly four times larger than, and inconsistent with, the current world-average value.

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Measurement of the Omega(0)(c) Baryon Lifetime

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