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Evidence for the Decay B(s)(0)-> D(s)((*))D(s)((*)) and a Measurement of Delta Gamma(CP)(s)/Gamma(s)
University of Chicago.ORCID iD: 0000-0002-8913-0981
Number of Authors: 509
2009 (English)In: Physical Review Letters, ISSN 0031-9007, Vol. 102, no 9, 091801- p.Article in journal (Refereed) Published
Abstract [en]

We search for the semi-inclusive process B(s)(0)-> D(s)((*))D(s)((*)) using 2.8 fb(-1) of pp collisions at s=1.96 TeV recorded by the D0 detector operating at the Fermilab Tevatron Collider. We observe 26.6 +/- 8.4 signal events with a significance above background of 3.2 standard deviations yielding a branching ratio of B(B(s)(0)-> D(s)((*))D(s)((*)))=0.035 +/- 0.010(stat.)+/- 0.011(syst.). Under certain theoretical assumptions, these double-charm final states saturate CP-even eigenstates in the B(s)(0) decays resulting in a width difference of Delta Gamma(CP)(s)/Gamma(s)=0.072 +/- 0.021(stat.)+/- 0.022(syst.).

Place, publisher, year, edition, pages
2009. Vol. 102, no 9, 091801- p.
National Category
Physical Sciences
URN: urn:nbn:se:kth:diva-72710DOI: 10.1103/PhysRevLett.102.091801ISI: 000263911900008OAI: diva2:488694
QC 20120202 Author Count: 509Available from: 2012-02-02 Created: 2012-02-01 Last updated: 2012-02-02Bibliographically approved

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