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- W1484121012 abstract "Using a sample of 122 million {Upsilon}(3S) decays collected with the BABAR detector at the PEP-II asymmetric energy collider at the SLAC National Accelerator Laboratory, we measure the ratio R{sub {tau}{mu}} = BR({Upsilon}(1S) {yields} {tau}{sup +}{tau}{sup -})/BR({Upsilon}(1S) {yields} {mu}{sup +}{mu}{sup -}); the measurement is intended as a test of lepton universality and as a possible search for a light pseudoscalar Higgs boson in Next to Minimal Supersymmetric Standard Model (NMSSM) scenarios. Such a boson could appear in a deviation of the ratio R{sub {tau}{mu}} from the Standard Model expectation, that is 1, except for small lepton mass corrections. The analysis exploits the decays {Upsilon}(3S) {yields} {Upsilon}(1S){pi}{sup +}{pi}{sup -}, {Upsilon}(1S) {yields} l{sup +}l{sup -}, where l = {mu},{tau}." @default.
- W1484121012 created "2016-06-24" @default.
- W1484121012 creator A5019767580 @default.
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- W1484121012 date "2012-04-10" @default.
- W1484121012 modified "2023-09-24" @default.
- W1484121012 title "Lepton Universality Test in Upsilon(1S) Decays at BaBar" @default.
- W1484121012 cites W1621550171 @default.
- W1484121012 hasPublicationYear "2012" @default.
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