Abstract: The direct CP asymmetries of the decays Bsup0/sup → Ksup*0/supμsup+/supμsup−/sup and Bsup+/sup → Ksup+/supμsup+/supμsup−/sup are measured using pp collision data corresponding to an integrated luminosity of 3.0 fbsup−1/sup collected with the LHCb detector. The respective control modes Bsup0/sup → J/ψKsup*0/sup and Bsup+/sup → J/ψKsup+/sup are used to account for detection and production asymmetries. The measurements are made in several intervals of μsup+/supμsup−/sup invariant mass squared, with the ϕ(1020) and charmonium resonance regions excluded. Under the hypothesis of zero CP asymmetry in the control modes, the average values of the asymmetries are(Formula Presented)where the first uncertainties are statistical and the second are due to systematic effects. Both measurements are consistent with the Standard Model prediction of small CP asymmetry in these decays.[Figure not available: see fulltext.]

LHCb collaboration, N., Aaij, R., Adeva, B., Adinolfi, M., Affolder, A., Ajaltouni, Z., et al. (2014). Measurement of CP asymmetries in the decays B0 → K*0 μ+ μ− and B+ → K+ μ+ μ−. JOURNAL OF HIGH ENERGY PHYSICS, 2014(9) [10.1007/JHEP09(2014)177].

Measurement of CP asymmetries in the decays B0 → K*0 μ+ μ− and B+ → K+ μ+ μ−

Borsato, M;CALVI, MARTA;CASSINA, LORENZO;GOTTI, CLAUDIO;KHANJI, BASEM;KUCHARCZYK, MARCIN;Martinelli, M;
2014

Abstract

Abstract: The direct CP asymmetries of the decays Bsup0/sup → Ksup*0/supμsup+/supμsup−/sup and Bsup+/sup → Ksup+/supμsup+/supμsup−/sup are measured using pp collision data corresponding to an integrated luminosity of 3.0 fbsup−1/sup collected with the LHCb detector. The respective control modes Bsup0/sup → J/ψKsup*0/sup and Bsup+/sup → J/ψKsup+/sup are used to account for detection and production asymmetries. The measurements are made in several intervals of μsup+/supμsup−/sup invariant mass squared, with the ϕ(1020) and charmonium resonance regions excluded. Under the hypothesis of zero CP asymmetry in the control modes, the average values of the asymmetries are(Formula Presented)where the first uncertainties are statistical and the second are due to systematic effects. Both measurements are consistent with the Standard Model prediction of small CP asymmetry in these decays.[Figure not available: see fulltext.]
Articolo in rivista - Articolo scientifico
B physics; CP violation; Flavour Changing Neutral Currents; Hadron-Hadron Scattering; Rare decay; Nuclear and High Energy Physics
English
2014
2014
9
177
none
LHCb collaboration, N., Aaij, R., Adeva, B., Adinolfi, M., Affolder, A., Ajaltouni, Z., et al. (2014). Measurement of CP asymmetries in the decays B0 → K*0 μ+ μ− and B+ → K+ μ+ μ−. JOURNAL OF HIGH ENERGY PHYSICS, 2014(9) [10.1007/JHEP09(2014)177].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/89012
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