An amplitude analysis of the final state structure in the B̄s0→J/ψK+K- decay mode is performed using 1.0 fb-1 of data collected by the LHCb experiment in 7 TeV center-of-mass energy pp collisions produced by the LHC. A modified Dalitz plot analysis of the final state is performed using both the invariant mass spectra and the decay angular distributions. Resonant structures are observed in the K+K- mass spectrum as well as a significant nonresonant S-wave contribution over the entire K+K- mass range. The largest resonant component is the (1020), accompanied by f0(980), f2′(1525), and four additional resonances. The overall branching fraction is measured to be B(B̄s0→J/ψK+K-)=(7. 70±0.08±0.39±0.60)×10-4, where the first uncertainty is statistical, the second systematic, and the third due to the ratio of the number of B̄s0 to B- mesons produced. The mass and width of the f2′(1525) are measured to be 1522.2±2.8-2.0+5.3 MeV and 84±6-5+10 MeV, respectively. The final state fractions of the other resonant states are also reported. © 2013 CERN. Published by the American Physical Society under the terms of the.

Amplitude analysis and branching fraction measurement of B̄s0→J/ψK+K- / 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. - 87:7(2013), pp. N/A-N/A. [10.1103/PhysRevD.87.072004]

Amplitude analysis and branching fraction measurement of B̄s0→J/ψK+K-

Bizzeti A.;
2013

Abstract

An amplitude analysis of the final state structure in the B̄s0→J/ψK+K- decay mode is performed using 1.0 fb-1 of data collected by the LHCb experiment in 7 TeV center-of-mass energy pp collisions produced by the LHC. A modified Dalitz plot analysis of the final state is performed using both the invariant mass spectra and the decay angular distributions. Resonant structures are observed in the K+K- mass spectrum as well as a significant nonresonant S-wave contribution over the entire K+K- mass range. The largest resonant component is the (1020), accompanied by f0(980), f2′(1525), and four additional resonances. The overall branching fraction is measured to be B(B̄s0→J/ψK+K-)=(7. 70±0.08±0.39±0.60)×10-4, where the first uncertainty is statistical, the second systematic, and the third due to the ratio of the number of B̄s0 to B- mesons produced. The mass and width of the f2′(1525) are measured to be 1522.2±2.8-2.0+5.3 MeV and 84±6-5+10 MeV, respectively. The final state fractions of the other resonant states are also reported. © 2013 CERN. Published by the American Physical Society under the terms of the.
2013
87
7
N/A
N/A
Amplitude analysis and branching fraction measurement of B̄s0→J/ψK+K- / 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. - 87:7(2013), pp. N/A-N/A. [10.1103/PhysRevD.87.072004]
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/11380/1209151
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