Measurement of polarization amplitudes and CP asymmetries in B 0 → Φk *(892)0

Title:	Measurement of polarization amplitudes and CP asymmetries in B 0 → Φk *(892)0
Authors:	R. Aaij, A Abba, B Adev, M Adinolfi, A Adinolfi
Keywords:	B physics;CP violation;Flavour Changing Neutral Currents;Hadron-Hadron Scattering;Polarization
Issue Date:	2014
Publisher:	Journal of High Energy Physics
Citation:	Scopus

URI:	http://link.springer.com/article/10.1007%2FJHEP05%282014%29069 http://repository.vnu.edu.vn/handle/VNU_123/34189

An angular analysis of the decay B 0 → ΦK *(892)0 is reported based on a pp collision data sample, corresponding to an integrated luminosity of 1.0 fb-1, collected at a centre-of-mass energy of sqrt{s} = 7 TeV with the LHCb detector. The P-wave amplitudes and phases are measured with a greater precision than by previous experiments, and confirm about equal amounts of longitudinal and transverse polarization. The S-wave K + π - and K + K - contributions are taken into account and found to be significant. A comparison of the B 0 → ΦK *(892)0 and {overline{B}} 0}\to \phi {overline{K}} {*}}{left({892} \right)} 0} results shows no evidence for direct CP violation in the rate asymmetry, in the triple-product asymmetries or in the polarization amplitudes and phases. [Figure not available: see fulltext.]