A combination of measurements sensitive to the CP violation angle γ of the Cabibbo-Kobayashi-Maskawa unitarity triangle and to the charm mixing parameters that describe oscillations between D0 and D-0 mesons is performed. Results from the charm and beauty sectors, based on data collected with the LHCb detector at CERN’s Large Hadron Collider, are combined for the first time. This method provides an improvement on the precision of the charm mixing parameter y by a factor of two with respect to the current world average. The charm mixing parameters are determined to be x=(0.400+0.052−0.053)% and y = (0.630+0.033−0.030)%. The angle γ is found to be γ = (65.4+3.8−4.2)° and is the most precise determination from a single experiment.

Simultaneous determination of CKM angle γ and charm mixing parameters / Aaij, R., Abdelmotteleb, A.S.W., Abellán Beteta, C., Abudinén, F., Ackernley, T., Adeva, B., Adinolfi, M., Afsharnia, H., Agapopoulou, C., Aidala, C.A., Aiola, S., Ajaltouni, Z., Akar, S., Albrecht, J., Alessio, F., Alexander, M., Alfonso Albero, A., Aliouche, Z., Alkhazov, G., Alvarez Cartelle, P., et al.. - In: JOURNAL OF HIGH ENERGY PHYSICS. - ISSN 1029-8479. - 2021:12(2021). [10.1007/JHEP12(2021)141]

Simultaneous determination of CKM angle γ and charm mixing parameters

Casse, G.;Sarti, A.;
2021

Abstract

A combination of measurements sensitive to the CP violation angle γ of the Cabibbo-Kobayashi-Maskawa unitarity triangle and to the charm mixing parameters that describe oscillations between D0 and D-0 mesons is performed. Results from the charm and beauty sectors, based on data collected with the LHCb detector at CERN’s Large Hadron Collider, are combined for the first time. This method provides an improvement on the precision of the charm mixing parameter y by a factor of two with respect to the current world average. The charm mixing parameters are determined to be x=(0.400+0.052−0.053)% and y = (0.630+0.033−0.030)%. The angle γ is found to be γ = (65.4+3.8−4.2)° and is the most precise determination from a single experiment.
2021
B physics, Charm physics, CKM angle gamma, CP violation, Hadron-Hadron scattering (experiments)
01 Pubblicazione su rivista::01a Articolo in rivista
Simultaneous determination of CKM angle γ and charm mixing parameters / Aaij, R., Abdelmotteleb, A.S.W., Abellán Beteta, C., Abudinén, F., Ackernley, T., Adeva, B., Adinolfi, M., Afsharnia, H., Agapopoulou, C., Aidala, C.A., Aiola, S., Ajaltouni, Z., Akar, S., Albrecht, J., Alessio, F., Alexander, M., Alfonso Albero, A., Aliouche, Z., Alkhazov, G., Alvarez Cartelle, P., et al.. - In: JOURNAL OF HIGH ENERGY PHYSICS. - ISSN 1029-8479. - 2021:12(2021). [10.1007/JHEP12(2021)141]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/1673361
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