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Model Independent Tests for Time Reversal and CP Violations and for CPT Theorem in \Lambda_b and \bar\Lambda_b Two Body Decays
Di Salvo E., Ajaltouni Z. J.
Modern Physics Letters A 24 (2009) 109-121 p. - http://hal.in2p3.fr/in2p3-00283174
Physique/Physique des Hautes Energies - Phénoménologie
Model Independent Tests for Time Reversal and CP Violations and for CPT Theorem in \Lambda_b and \bar\Lambda_b Two Body Decays
E. Di Salvo, Z J Ajaltouni ()1
1 :  LPC - Laboratoire de Physique Corpusculaire [Clermont-Ferrand]
http://clrwww.in2p3.fr/
CNRS : UMR6533 – IN2P3 – Université Blaise Pascal - Clermont-Ferrand II
Campus des Cézeaux 24, avenue des Landais BP 80026 63171 Aubière Cedex
France
Weak decays of beauty baryons like \Lambda_b (\bar\Lambda_b) into \Lambda (\bar\Lambda) and V (J^P = 1^-), where both decay products are polarized, offer interesting opportunities to perform tests of time reversal and CP violations and of CPT invariance. We propose a model independent parametrization of the angular distribution and of the polarization of the final resonances, by means of the spin density matrix. The transverse component of the polarization is sensitive to time reversal violations, moreover CP-and CPT-sensitive observables are defined.
LHCb

Articles dans des revues avec comité de lecture
2009
Modern Physics Letters A (Mod. Phys. Lett. A)
Publisher World Scientific Publishing
ISSN 0217-7323 (eISSN : 0217-7323)
24
109-121 p.

PCCF RI 0802
11.30.Er, 12.39.-x, 12.39.ki, 13.30.-a, 14.20.Mr
14 pages, submitted to Modern Physics Letters A
time reversal
Lien vers le texte intégral : 
http://fr.arXiv.org/abs/0805.4171