Search for the Lepton-Flavor Violating Decays $\upsilon_ 3S \to e^\pm \tau^\mp$ and $\upsilon_ 3S \to \mu^\pm \tau^\mp$

The BaBar Collaboration

Search for the Lepton-Flavor Violating Decays $\upsilon_ 3S \to e^\pm \tau^\mp$ and $\upsilon_ 3S \to \mu^\pm \tau^\mp$

The BaBar Collaboration

Research output: Chapter in Book/Conference proceeding › Conference contribution › peer-review

Abstract

Charged lepton-flavor violating processes are extremely rare in the Standard Model, but they may occur in several beyond-the-Standard Model theories, including Supersymmetry or models with leptoquarks or compositeness. We present a search for such processes in a sample of 117M Upsilon(3S) decays recorded with the BaBar detector. We place upper limits on the branching fractions BF(Upsilon(3S) -> e tau) < 5.0e-6 and BF(Upilon(3S) -> mu tau) < 4.1e-6 at 90% confidence level. These results are used to place lower limits on the mass scale of beyond-the-Standard Model physics contributing to lepton-flavor violating decays of the Upsilon(3S).

Original language	English
Title of host publication	6th International Workshop on Heavy Quarkonium Proceedings
Number of pages	15
Publication status	Published - 2008
Event	6th International Workshop on Heavy Quarkonium - Nara, Japan Duration: 2 Dec 2008 → 5 Dec 2008

Conference

Conference	6th International Workshop on Heavy Quarkonium
Abbreviated title	QWG2008
Country/Territory	Japan
City	Nara
Period	2/12/08 → 5/12/08

Cite this

@inproceedings{a89b720af040421c8ab384c3547af958,

title = "Search for the Lepton-Flavor Violating Decays \$\textbackslash{}upsilon\_ 3S \textbackslash{}to e\textasciicircum{}\textbackslash{}pm \textbackslash{}tau\textasciicircum{}\textbackslash{}mp\$ and \$\textbackslash{}upsilon\_ 3S \textbackslash{}to \textbackslash{}mu\textasciicircum{}\textbackslash{}pm \textbackslash{}tau\textasciicircum{}\textbackslash{}mp\$",

abstract = "Charged lepton-flavor violating processes are extremely rare in the Standard Model, but they may occur in several beyond-the-Standard Model theories, including Supersymmetry or models with leptoquarks or compositeness. We present a search for such processes in a sample of 117M Upsilon(3S) decays recorded with the BaBar detector. We place upper limits on the branching fractions BF(Upsilon(3S) -> e tau) < 5.0e-6 and BF(Upilon(3S) -> mu tau) < 4.1e-6 at 90\% confidence level. These results are used to place lower limits on the mass scale of beyond-the-Standard Model physics contributing to lepton-flavor violating decays of the Upsilon(3S).",

author = "David Bailey and Kim Alwyn and Roger Barlow and Graham Jackson and George Lafferty and Jong Yi and \{The BaBar Collaboration\}",

year = "2008",

language = "English",

booktitle = "6th International Workshop on Heavy Quarkonium Proceedings",

note = "6th International Workshop on Heavy Quarkonium, QWG2008 ; Conference date: 02-12-2008 Through 05-12-2008",

}

TY - GEN

T1 - Search for the Lepton-Flavor Violating Decays $\upsilon_ 3S \to e^\pm \tau^\mp$ and $\upsilon_ 3S \to \mu^\pm \tau^\mp$

AU - Bailey, David

AU - Alwyn, Kim

AU - Barlow, Roger

AU - Jackson, Graham

AU - Lafferty, George

AU - Yi, Jong

AU - The BaBar Collaboration

PY - 2008

Y1 - 2008

N2 - Charged lepton-flavor violating processes are extremely rare in the Standard Model, but they may occur in several beyond-the-Standard Model theories, including Supersymmetry or models with leptoquarks or compositeness. We present a search for such processes in a sample of 117M Upsilon(3S) decays recorded with the BaBar detector. We place upper limits on the branching fractions BF(Upsilon(3S) -> e tau) < 5.0e-6 and BF(Upilon(3S) -> mu tau) < 4.1e-6 at 90% confidence level. These results are used to place lower limits on the mass scale of beyond-the-Standard Model physics contributing to lepton-flavor violating decays of the Upsilon(3S).

AB - Charged lepton-flavor violating processes are extremely rare in the Standard Model, but they may occur in several beyond-the-Standard Model theories, including Supersymmetry or models with leptoquarks or compositeness. We present a search for such processes in a sample of 117M Upsilon(3S) decays recorded with the BaBar detector. We place upper limits on the branching fractions BF(Upsilon(3S) -> e tau) < 5.0e-6 and BF(Upilon(3S) -> mu tau) < 4.1e-6 at 90% confidence level. These results are used to place lower limits on the mass scale of beyond-the-Standard Model physics contributing to lepton-flavor violating decays of the Upsilon(3S).

M3 - Conference contribution

BT - 6th International Workshop on Heavy Quarkonium Proceedings

T2 - 6th International Workshop on Heavy Quarkonium

Y2 - 2 December 2008 through 5 December 2008

ER -

Search for the Lepton-Flavor Violating Decays $\upsilon_ 3S \to e^\pm \tau^\mp$ and $\upsilon_ 3S \to \mu^\pm \tau^\mp$

Abstract

Conference

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