Title:
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First observation of the decay B¯0s→D0K∗0 and a measurement of the ratio of branching fractions B(B¯0s→D0K∗0)/B(B¯0→D0ρ0)
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Author:
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Calvo Gómez, Míriam; Camboni, Alessandro; Vilasís Cardona, Xavier; LHCb Collaboration - CERN
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Other authors:
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Universitat Ramon Llull. La Salle; CERN |
Abstract:
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The first observation of the decay B¯s0→D0K⁎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 B¯s0→D0K⁎0 branching fraction is measured relative to that of B¯0→D0ρ0 : B(B¯s0→D0K⁎0)B(B¯0→D0ρ0)=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 Bs0 hadronisation fractions. |
Publication date:
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2011-11-30 |
Subject(s):
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Gran col·lisionador d'hadrons (França i Suïssa) Partícules (Matèria) Física--Mesuraments |
Rights:
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L'accés als continguts d'aquest document queda condicionat a l'acceptació de les condicions d'ús establertes per la següent llicència Creative Commons:http://creativecommons.org/licenses/by-nc-nd/4.0/
© CERN |
Pages:
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8 p. |
Document type:
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Article Article - Published version |
DOI:
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http://dx.doi.org/10.1016/j.physletb.2011.10.073
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Published by:
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Elsevier
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Publish at:
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Physics Letters B, Vol. 706, No. 1 (Novembre 2011)
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