The first observation of the decay anti-B0s → D0 K*0 using pp data collected by the LHCb detector at a centre-of-mass energy of 7 TeV, corresponding to an integrated luminosity of 36   pb^-1 , is reported. A signal of 34.4 ± 6.8 events is obtained and the absence of signal is rejected with a statistical significance of more than nine standard deviations. The anti-B0s → D0 K*0 branching fraction is measured relative to that of anti-B0 → D0 ρ0 : B(anti-B0s → D0 K*0) / B(anti-B0 → D0 ρ0) = 1.48 ± 0.34 ± 0.15 ± 0.12 , where the first uncertainty is statistical, the second systematic and the third is due to the uncertainty on the ratio of the B0 and B0s hadronisation fractions.

First observation of the decay B̄s0→D0K×0 and a measurement of the ratio of branching fractions B(B̄s0→D0K×0) B(B̄0→D0ρ0) / R., A., C. A., B., B., A., M., A., C., A., A., A., Z., A., J., A., F., A., M., A., G., A., P. A., C., A. A. J., R., S., A., Y., A., J., A., R., A., O. A., G., F., A., L., A., et al.. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - STAMPA. - 706:1(2011), pp. 32-39. [10.1016/j.physletb.2011.10.073]

First observation of the decay B̄s0→D0K×0 and a measurement of the ratio of branching fractions B(B̄s0→D0K×0) B(B̄0→D0ρ0)

BIZZETI, Andrea;
2011

Abstract

The first observation of the decay anti-B0s → D0 K*0 using pp data collected by the LHCb detector at a centre-of-mass energy of 7 TeV, corresponding to an integrated luminosity of 36   pb^-1 , is reported. A signal of 34.4 ± 6.8 events is obtained and the absence of signal is rejected with a statistical significance of more than nine standard deviations. The anti-B0s → D0 K*0 branching fraction is measured relative to that of anti-B0 → D0 ρ0 : B(anti-B0s → D0 K*0) / B(anti-B0 → D0 ρ0) = 1.48 ± 0.34 ± 0.15 ± 0.12 , where the first uncertainty is statistical, the second systematic and the third is due to the uncertainty on the ratio of the B0 and B0s hadronisation fractions.
2011
706
1
32
39
First observation of the decay B̄s0→D0K×0 and a measurement of the ratio of branching fractions B(B̄s0→D0K×0) B(B̄0→D0ρ0) / R., A., C. A., B., B., A., M., A., C., A., A., A., Z., A., J., A., F., A., M., A., G., A., P. A., C., A. A. J., R., S., A., Y., A., J., A., R., A., O. A., G., F., A., L., A., et al.. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - STAMPA. - 706:1(2011), pp. 32-39. [10.1016/j.physletb.2011.10.073]
R., Aaij; C. A., Beteta; B., Adeva; M., Adinolfi; C., Adrover; A., Affolder; Z., Ajaltouni; J., Albrecht; F., Alessio; M., Alexander; G., Alkhazov; P....espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11380/703158
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