Using proton-proton collision data collected by the LHCb experiment at √s=7 TeV, corresponding to an integrated luminosity of 1.0 fb -1, the ratio of branching fractions of the B0→D* -π+π-π+ decay relative to the B0→D*-π+ decay is measured to be B(B0→D*-π+π-π+) B(B0→D*-π+)=2.64±0.04(stat)±0. 13(syst). The Cabibbo-suppressed decay B0→D*-K +π-π+ is observed for the first time, and the measured ratio of branching fractions is B(B0→D* -K+π-π+)B(B0→D* -π+π-π+)=(6.47±0. 37(stat)±0.35(syst))×10-2. A search for orbital excitations of charm mesons contributing to the B0→D* -π+π-π+ final state is also performed, and the first observation of the B0→D̄1(2420)0π+π- decay is reported with the ratio of branching fractions B(B0→(D̄1(2420)0→D*-π+) π-π+)B(B0→D*-π +π-π+)=(2.04±0.42(stat)±0. 22(syst))×10-2, where the numerator represents a product of the branching fractions B(B0→D̄1(2420)0π -π+) and B(D̄1(2420)0→D*-π+). © 2013 CERN. Published by the American Physical Society under the terms of the.

Study of B0→D* -π+π-π+ and B0→D*-K+π-π+ decays / Aaij, R., Abellan Beteta, C., Adametz, A., Adeva, B., Adinolfi, M., Adrover, C., Affolder, A., Ajaltouni, Z., Albrecht, J., Alessio, F., Alexander, M., Ali, S., Alkhazov, G., Alvarez Cartelle, P., Alves, A.A., Amato, S., Amhis, Y., Anderlini, L., Anderson, J., Andreassen, R., et al.. - In: PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY. - ISSN 1550-7998. - 87:9(2013), pp. N/A-N/A. [10.1103/PhysRevD.87.092001]

Study of B0→D* -π+π-π+ and B0→D*-K+π-π+ decays

Bizzeti A.;
2013

Abstract

Using proton-proton collision data collected by the LHCb experiment at √s=7 TeV, corresponding to an integrated luminosity of 1.0 fb -1, the ratio of branching fractions of the B0→D* -π+π-π+ decay relative to the B0→D*-π+ decay is measured to be B(B0→D*-π+π-π+) B(B0→D*-π+)=2.64±0.04(stat)±0. 13(syst). The Cabibbo-suppressed decay B0→D*-K +π-π+ is observed for the first time, and the measured ratio of branching fractions is B(B0→D* -K+π-π+)B(B0→D* -π+π-π+)=(6.47±0. 37(stat)±0.35(syst))×10-2. A search for orbital excitations of charm mesons contributing to the B0→D* -π+π-π+ final state is also performed, and the first observation of the B0→D̄1(2420)0π+π- decay is reported with the ratio of branching fractions B(B0→(D̄1(2420)0→D*-π+) π-π+)B(B0→D*-π +π-π+)=(2.04±0.42(stat)±0. 22(syst))×10-2, where the numerator represents a product of the branching fractions B(B0→D̄1(2420)0π -π+) and B(D̄1(2420)0→D*-π+). © 2013 CERN. Published by the American Physical Society under the terms of the.
2013
87
9
N/A
N/A
Study of B0→D* -π+π-π+ and B0→D*-K+π-π+ decays / Aaij, R., Abellan Beteta, C., Adametz, A., Adeva, B., Adinolfi, M., Adrover, C., Affolder, A., Ajaltouni, Z., Albrecht, J., Alessio, F., Alexander, M., Ali, S., Alkhazov, G., Alvarez Cartelle, P., Alves, A.A., Amato, S., Amhis, Y., Anderlini, L., Anderson, J., Andreassen, R., et al.. - In: PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY. - ISSN 1550-7998. - 87:9(2013), pp. N/A-N/A. [10.1103/PhysRevD.87.092001]
Aaij, R.; Abellan Beteta, C.; Adametz, A.; Adeva, B.; Adinolfi, M.; Adrover, C.; Affolder, A.; Ajaltouni, Z.; Albrecht, J.; Alessio, F.; Alexander, M....espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11380/1209166
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