Amplitude models are applied to studies of resonance structure in D0→K0SK−π+ and D0→K0SK+π− decays using pp collision data corresponding to an integrated luminosity of 3.0  fb-1 collected by the LHCb experiment. Relative magnitude and phase information is determined, and coherence factors and related observables are computed for both the whole phase space and a restricted region of 100  MeV/c2 around the K∗(892)± resonance. Two formulations for the Kπ S-wave are used, both of which give a good description of the data. The ratio of branching fractions B(D0→K0SK+π−)/B(D0→K0SK−π+) is measured to be 0.655±0.004(stat)±0.006(syst) over the full phase space and 0.370±0.003(stat)±0.012(syst) in the restricted region. A search for CPviolation is performed using the amplitude models and no significant effect is found. Predictions from SU(3) flavor symmetry for K∗(892) K amplitudes of different charges are compared with the amplitude model results.

Studies of the resonance structure in D0 → KS0 K±π± decays / Aaij, R., Adeva, B., Adinolfi, M., Affolder, A., Ajaltouni, Z., Akar, S., Albrecht, J., Alessio, F., Alexander, M., Ali, S., Alkhazov, G., Alvarez Cartelle, P., Alves, A.A., Amato, S., Amerio, S., Amhis, Y., An, L., Anderlini, L., Anderson, J., Andreassi, G., et al.. - In: PHYSICAL REVIEW D. - ISSN 2470-0010. - 93:5(2016). [10.1103/PhysRevD.93.052018]

Studies of the resonance structure in D0 → KS0 K±π± decays

Capriotti, L.;Casse, G.;Sarti, A.;Sciubba, A.;
2016

Abstract

Amplitude models are applied to studies of resonance structure in D0→K0SK−π+ and D0→K0SK+π− decays using pp collision data corresponding to an integrated luminosity of 3.0  fb-1 collected by the LHCb experiment. Relative magnitude and phase information is determined, and coherence factors and related observables are computed for both the whole phase space and a restricted region of 100  MeV/c2 around the K∗(892)± resonance. Two formulations for the Kπ S-wave are used, both of which give a good description of the data. The ratio of branching fractions B(D0→K0SK+π−)/B(D0→K0SK−π+) is measured to be 0.655±0.004(stat)±0.006(syst) over the full phase space and 0.370±0.003(stat)±0.012(syst) in the restricted region. A search for CPviolation is performed using the amplitude models and no significant effect is found. Predictions from SU(3) flavor symmetry for K∗(892) K amplitudes of different charges are compared with the amplitude model results.
2016
B physics, Branching fraction, Flavor physics, Hadron-Hadron scattering (experiments)
01 Pubblicazione su rivista::01a Articolo in rivista
Studies of the resonance structure in D0 → KS0 K±π± decays / Aaij, R., Adeva, B., Adinolfi, M., Affolder, A., Ajaltouni, Z., Akar, S., Albrecht, J., Alessio, F., Alexander, M., Ali, S., Alkhazov, G., Alvarez Cartelle, P., Alves, A.A., Amato, S., Amerio, S., Amhis, Y., An, L., Anderlini, L., Anderson, J., Andreassi, G., et al.. - In: PHYSICAL REVIEW D. - ISSN 2470-0010. - 93:5(2016). [10.1103/PhysRevD.93.052018]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/1074134
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