A search for time-integrated CP violation in the Cabibbo-suppressed decay D0 → π− π+ π0 is performed using for the first time an unbinned model-independent technique known as the energy test. Using proton–proton collision data, corresponding to an integrated luminosity of 2.0 fb^−1 collected by the LHCb detector at a centre-of-mass energy of √s = 8 TeV, the world's best sensitivity to CP violation in this decay is obtained. The data are found to be consistent with the hypothesis of CP symmetry with a p-value of (2.6 ± 0.5)%.

R. Aaij, B. Adeva, M. Adinolfi, A. Affolder, Z. Ajaltouni, S. Akar, et al. (2015). Search for CP Violation in D0 → π− π+ π0 Decays with the Energy Test. PHYSICS LETTERS. SECTION B, 740, 158-167 [10.1016/j.physletb.2014.11.043].

Search for CP Violation in D0 → π− π+ π0 Decays with the Energy Test

CARBONE, ANGELO;GALLI, DOMENICO;MOGGI, NICCOLO';MUSSINI, MANUEL;PATRIGNANI, CLAUDIA;PERAZZINI, STEFANO;VAGNONI, VINCENZO MARIA;ZANGOLI, MARIA;
2015

Abstract

A search for time-integrated CP violation in the Cabibbo-suppressed decay D0 → π− π+ π0 is performed using for the first time an unbinned model-independent technique known as the energy test. Using proton–proton collision data, corresponding to an integrated luminosity of 2.0 fb^−1 collected by the LHCb detector at a centre-of-mass energy of √s = 8 TeV, the world's best sensitivity to CP violation in this decay is obtained. The data are found to be consistent with the hypothesis of CP symmetry with a p-value of (2.6 ± 0.5)%.
2015
R. Aaij, B. Adeva, M. Adinolfi, A. Affolder, Z. Ajaltouni, S. Akar, et al. (2015). Search for CP Violation in D0 → π− π+ π0 Decays with the Energy Test. PHYSICS LETTERS. SECTION B, 740, 158-167 [10.1016/j.physletb.2014.11.043].
R. Aaij; B. Adeva; M. Adinolfi; A. Affolder; Z. Ajaltouni; S. Akar; J. Albrecht; F. Alessio; M. Alexander; S. Ali; G. Alkhazov; P. Alvarez Cartelle; A...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/393143
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