ΔΓd : a forgotten null test of the standard model
Gershon, T. J.. (2010) ΔΓd : a forgotten null test of the standard model. Journal of Physics G : Nuclear and Particle Physics, Vol.38 (No.1). 015007. ISSN 0954-3899Full text not available from this repository.
Official URL: http://dx.doi.org/10.1088/0954-3899/38/1/015007
The recent measurement of an anomalous like-sign dimuon asymmetry by the D0 collaboration has prompted theoretical speculation on possible sources of physics beyond the standard model that may affect lifetimes and lifetime differences in neutral B meson systems. One observable that deserves closer attention is the width difference in the B0d system, ΔΓd. Since the standard model prediction for this quantity is well below 1%, it serves as a 'null test' whereby the measurement of a larger value would cleanly reveal the presence of new physics. Methods to measure ΔΓd at current and future experiments are reviewed and an attractive new approach is proposed.
|Item Type:||Journal Article|
|Subjects:||Q Science > QC Physics|
|Divisions:||Faculty of Science > Physics|
|Library of Congress Subject Headings (LCSH):||B mesons, Standard model (Nuclear physics)|
|Journal or Publication Title:||Journal of Physics G : Nuclear and Particle Physics|
|Publisher:||Institute of Physics Publishing Ltd.|
|Official Date:||January 2010|
|Access rights to Published version:||Restricted or Subscription Access|
|Funder:||Science and Technology Facilities Council (Great Britain) (STFC), Seventh Framework Programme (European Commission) (FP7), European Research Council (ERC)|
 Abazov V M et al (D0 Collaboration) 2010 Phys. Rev. D 82 032001 (arXiv:1005.2757 [hep-ex])
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