Measurement of the Branching Fraction of the Decay B0s → K0S K0S ABSTRACT: A measurement of the branching fraction of the decay B0s → K0S K0S is performed using proton–proton collision data corresponding to an integrated luminosity of 5 fb^−1 collected by the LHCb experiment between 2011 and 2016. The branching fraction is determined to be B(B0s → K0S K0S) = [8.3 ± 1.6(stat) ± 0.9(syst) ± 0.8(norm) ± 0.3(f_s/f_d)] × 10^−6, where the first uncertainty is statistical, the second is systematic, and the third and fourth are due to uncertainties on the branching fraction of the normalization mode B0 → ϕ K0S and the ratio of hadronization fractions f_s/f_d. This is the most precise measurement of this branching fraction to date. Furthermore, a measurement of the branching fraction of the decay B0 → K0S K0S is performed relative to that of the B0s → K0S K0S channel, and is found to be B(B0 → K0S K0S)/B(B0s → K0S K0S) = [7.5 ± 3.1(stat) ± 0.5(syst) ± 0.3(f_s/f_d)] × 10^−2.

Aaij, R., Abellán Beteta, C., Ackernley, T., Adeva, B., Adinolfi, M., Afsharnia, H., et al. (2020). Measurement of the Branching Fraction of the Decay B0s → K0S K0S. PHYSICAL REVIEW D, 102(1), 1-15 [10.1103/PhysRevD.102.012011].

Measurement of the Branching Fraction of the Decay B0s → K0S K0S

Betti, F.;Capriotti, L.;Carbone, A.;Ferrari, F.;Galli, D.;Maccolini, S.;Manuzzi, D.;Patrignani, C.;Perazzini, S.;Pisani, F.;Zucchelli, S.
2020

Abstract

Measurement of the Branching Fraction of the Decay B0s → K0S K0S ABSTRACT: A measurement of the branching fraction of the decay B0s → K0S K0S is performed using proton–proton collision data corresponding to an integrated luminosity of 5 fb^−1 collected by the LHCb experiment between 2011 and 2016. The branching fraction is determined to be B(B0s → K0S K0S) = [8.3 ± 1.6(stat) ± 0.9(syst) ± 0.8(norm) ± 0.3(f_s/f_d)] × 10^−6, where the first uncertainty is statistical, the second is systematic, and the third and fourth are due to uncertainties on the branching fraction of the normalization mode B0 → ϕ K0S and the ratio of hadronization fractions f_s/f_d. This is the most precise measurement of this branching fraction to date. Furthermore, a measurement of the branching fraction of the decay B0 → K0S K0S is performed relative to that of the B0s → K0S K0S channel, and is found to be B(B0 → K0S K0S)/B(B0s → K0S K0S) = [7.5 ± 3.1(stat) ± 0.5(syst) ± 0.3(f_s/f_d)] × 10^−2.
2020
Aaij, R., Abellán Beteta, C., Ackernley, T., Adeva, B., Adinolfi, M., Afsharnia, H., et al. (2020). Measurement of the Branching Fraction of the Decay B0s → K0S K0S. PHYSICAL REVIEW D, 102(1), 1-15 [10.1103/PhysRevD.102.012011].
Aaij, R.; Abellán Beteta, C.; Ackernley, T.; Adeva, B.; Adinolfi, M.; Afsharnia, H.; Aidala, C.A.; Aiola, S.; Ajaltouni, Z.; Akar, S.; Albicocco, P.; ...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/772398
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