| Probing New Physics via the B_{s}^{0}→μ^{+}μ^{-} Effective Lifetime. | |
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MedLine Citation:
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PMID: 23006075 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
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We have recently seen new upper bounds for B_{s}^{0}→μ^{+}μ^{-}, a key decay to search for physics beyond the standard model. Furthermore a nonvanishing decay width difference ΔΓ_{s} of the B_{s} system has been measured. We show that ΔΓ_{s} affects the extraction of the B_{s}^{0}→μ^{+}μ^{-} branching ratio and the resulting constraints on the new physics parameter space and give formulas for including this effect. Moreover, we point out that ΔΓ_{s} provides a new observable, the effective B_{s}^{0}→μ^{+}μ^{-} lifetime τ_{μ^{+}μ^{-}}, which offers a theoretically clean probe for new physics searches that is complementary to the branching ratio. Should the B_{s}^{0}→μ^{+}μ^{-} branching ratio agree with the standard model, the measurement of τ_{μ^{+}μ^{-}}, which appears feasible at upgrades of the Large Hadron Collider experiments, may still reveal large new physics effects. |
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Authors:
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Kristof De Bruyn; Robert Fleischer; Robert Knegjens; Patrick Koppenburg; Marcel Merk; Antonio Pellegrino; Niels Tuning |
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Publication Detail:
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Type: Journal Article Date: 2012-07-25 |
Journal Detail:
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Title: Physical review letters Volume: 109 ISSN: 1079-7114 ISO Abbreviation: Phys. Rev. Lett. Publication Date: 2012 Jul |
Date Detail:
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Created Date: 2012-09-25 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0401141 Medline TA: Phys Rev Lett Country: United States |
Other Details:
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Languages: eng Pagination: 041801 Citation Subset: IM |
Affiliation:
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Nikhef, Science Park 105, NL-1098 XG Amsterdam, Netherlands. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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