An angular analysis and a measurement of the differential branching fraction of the decay B s 0  → ϕμ + μ − are presented, using data corresponding to an integrated luminosity of 3.0 fb−1 of pp collisions recorded by the LHCb experiment at √=7 and 8 TeV. Measurements are reported as a function of q 2, the square of the dimuon invariant mass and results of the angular analysis are found to be consistent with the Standard Model. In the range 1 < q 2 < 6 GeV2 /c 4, where precise theoretical calculations are available, the differential branching fraction is found to be more than 3σ below the Standard Model predictions.

Angular analysis and differential branching fraction of the decay B0s → ϕμ+μ− / The LHCb collaboration, N., 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., et al.. - In: JOURNAL OF HIGH ENERGY PHYSICS. - ISSN 1029-8479. - 2015:9(2015). [10.1007/JHEP09(2015)179]

Angular analysis and differential branching fraction of the decay B0s → ϕμ+μ−

Capriotti, L.;Casse, G.;SARTI, ALESSIO;SCIUBBA, Adalberto;
2015

Abstract

An angular analysis and a measurement of the differential branching fraction of the decay B s 0  → ϕμ + μ − are presented, using data corresponding to an integrated luminosity of 3.0 fb−1 of pp collisions recorded by the LHCb experiment at √=7 and 8 TeV. Measurements are reported as a function of q 2, the square of the dimuon invariant mass and results of the angular analysis are found to be consistent with the Standard Model. In the range 1 < q 2 < 6 GeV2 /c 4, where precise theoretical calculations are available, the differential branching fraction is found to be more than 3σ below the Standard Model predictions.
2015
B physics; Flavor physics; Hadron-Hadron Scattering; Rare decay; Nuclear and High Energy Physics
01 Pubblicazione su rivista::01a Articolo in rivista
Angular analysis and differential branching fraction of the decay B0s → ϕμ+μ− / The LHCb collaboration, N., 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., et al.. - In: JOURNAL OF HIGH ENERGY PHYSICS. - ISSN 1029-8479. - 2015:9(2015). [10.1007/JHEP09(2015)179]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/836273
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