Filters
Results 1 - 1 of 1
Results 1 - 1 of 1.
Search took: 0.028 seconds
Aubert, B.; Barate, R.; Boutigny, D.; Couderc, F.; Karyotakis, Y.; Lees, J.P.; Poireau, V.; Tisserand, V.; Zghiche, A.; Grauges, E.; Palano, A.; Pappagallo, M.; Pompili, A.; Chen, J.C.; Qi, N.D.; Rong, G.; Wang, P.; Zhu, Y.S.; Eigen, G.; Ofte, I.; Stugu, B.
Stanford Linear Accelerator Center (United States). Funding organisation: US Department of Energy (United States)2005
Stanford Linear Accelerator Center (United States). Funding organisation: US Department of Energy (United States)2005
AbstractAbstract
[en] We present preliminary results from a lepton-tagged fully-inclusive measurement of B → Xsγ decays, where Xs is any strange hadronic state. Results are based on a BABAR data set of 88.5 million B(bar B) pairs at the Υ(4S) resonance. We present a reconstructed photon energy spectrum in the Υ(4S) frame, and partial branching fractions above minimum reconstructed photon energies of 1.9, 2.0, 2.1 and 2.2 GeV. We then convert these to measurements of partial branching fractions and truncated first and second moments of the true photon energy distribution in the B rest frame, above the same minimum photon energy values. The full correlation matrices between the first and second moments are included to allow fitting to any parameterized theoretical calculation. We also measure the direct CP asymmetry ΑCP(B → Xs+dγ) (based on the charge of the tagging lepton) above a reconstructed photon energy of 2.2 GeV
Primary Subject
Source
20 Sep 2005; 23 p; 22. International Symposium on Lepton-Photon Interactions at High Energy (LP 2005); Uppsala (Sweden); 30 Jun - 5 Jul 2005; HEP-EX--0507001; AC02-76SF00515; Available from http://www.slac.stanford.edu/cgi-wrap/pubpage?slac-pub-11329.html; OSTI as DE00878404; PURL: https://www.osti.gov/servlets/purl/878404-3lX65H/
Record Type
Report
Literature Type
Conference
Report Number
Country of publication
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue