Search for the Baryon and Lepton Number Violating Decays τ→Λτ→Λ h

The BaBar Collaboration

Search for the Baryon and Lepton Number Violating Decays τ→Λτ→Λ h

The BaBar Collaboration

Research output: Chapter in Book/Conference proceeding › Conference contribution

Abstract

We have searched for the violation of baryon number B and lepton number L in the (B-L)-conserving modes tau- -> anti-Lambda0 pi- and tau- -> anti-Lambda0 K- as well as the (B-L)-violating modes tau- -> Lambda0 pi- and tau- -> Lambda0 K- using 237 inv. fb of data collected with the BABAR detector at the PEP-II asymmetric-energy e+e- storage ring. We do not observe any signal and determine preliminary upper limits on the branching fractions B(tau- -> anti-Lambda0 pi-) < 5.9 x 10^-8, B(tau- -> Lambda0 pi-) < 5.8 x 10^-8, B(tau- -> anti-Lambda0 K-) < 7.2 x 10^-8, and B(tau- -> Lambda0 K-) < 15 x 10^-8 at 90% confidence level.

Original language	English
Title of host publication	Proceedings of the 33rd International Conference on High Energy Physics
Number of pages	15
Publication status	Published - 2006
Event	33rd International Conference on High-Energy Physics - Moscow, Russian Federation Duration: 26 Jul 2006 → 2 Aug 2006

Conference

Conference	33rd International Conference on High-Energy Physics
Abbreviated title	ICHEP '06
Country/Territory	Russian Federation
City	Moscow
Period	26/07/06 → 2/08/06

Cite this

@inproceedings{a06f053610c544d786a788fb023b6048,

title = "Search for the Baryon and Lepton Number Violating Decays τ→Λτ→Λ h",

abstract = "We have searched for the violation of baryon number B and lepton number L in the (B-L)-conserving modes tau- -> anti-Lambda0 pi- and tau- -> anti-Lambda0 K- as well as the (B-L)-violating modes tau- -> Lambda0 pi- and tau- -> Lambda0 K- using 237 inv. fb of data collected with the BABAR detector at the PEP-II asymmetric-energy e+e- storage ring. We do not observe any signal and determine preliminary upper limits on the branching fractions B(tau- -> anti-Lambda0 pi-) < 5.9 x 10\textasciicircum{}-8, B(tau- -> Lambda0 pi-) < 5.8 x 10\textasciicircum{}-8, B(tau- -> anti-Lambda0 K-) < 7.2 x 10\textasciicircum{}-8, and B(tau- -> Lambda0 K-) < 15 x 10\textasciicircum{}-8 at 90\% confidence level.",

author = "George Lafferty and Nicholas Barlow and Roger Barlow and Yaw Chia and Christina Edgar and Mitchell Naisbit and Jennifer Williams and Jong Yi and \{The BaBar Collaboration\}",

year = "2006",

language = "English",

booktitle = "Proceedings of the 33rd International Conference on High Energy Physics",

note = "33rd International Conference on High-Energy Physics, ICHEP '06 ; Conference date: 26-07-2006 Through 02-08-2006",

}

TY - GEN

T1 - Search for the Baryon and Lepton Number Violating Decays τ→Λτ→Λ h

AU - Lafferty, George

AU - Barlow, Nicholas

AU - Barlow, Roger

AU - Chia, Yaw

AU - Edgar, Christina

AU - Naisbit, Mitchell

AU - Williams, Jennifer

AU - Yi, Jong

AU - The BaBar Collaboration

PY - 2006

Y1 - 2006

N2 - We have searched for the violation of baryon number B and lepton number L in the (B-L)-conserving modes tau- -> anti-Lambda0 pi- and tau- -> anti-Lambda0 K- as well as the (B-L)-violating modes tau- -> Lambda0 pi- and tau- -> Lambda0 K- using 237 inv. fb of data collected with the BABAR detector at the PEP-II asymmetric-energy e+e- storage ring. We do not observe any signal and determine preliminary upper limits on the branching fractions B(tau- -> anti-Lambda0 pi-) < 5.9 x 10^-8, B(tau- -> Lambda0 pi-) < 5.8 x 10^-8, B(tau- -> anti-Lambda0 K-) < 7.2 x 10^-8, and B(tau- -> Lambda0 K-) < 15 x 10^-8 at 90% confidence level.

AB - We have searched for the violation of baryon number B and lepton number L in the (B-L)-conserving modes tau- -> anti-Lambda0 pi- and tau- -> anti-Lambda0 K- as well as the (B-L)-violating modes tau- -> Lambda0 pi- and tau- -> Lambda0 K- using 237 inv. fb of data collected with the BABAR detector at the PEP-II asymmetric-energy e+e- storage ring. We do not observe any signal and determine preliminary upper limits on the branching fractions B(tau- -> anti-Lambda0 pi-) < 5.9 x 10^-8, B(tau- -> Lambda0 pi-) < 5.8 x 10^-8, B(tau- -> anti-Lambda0 K-) < 7.2 x 10^-8, and B(tau- -> Lambda0 K-) < 15 x 10^-8 at 90% confidence level.

M3 - Conference contribution

BT - Proceedings of the 33rd International Conference on High Energy Physics

T2 - 33rd International Conference on High-Energy Physics

Y2 - 26 July 2006 through 2 August 2006

ER -

Search for the Baryon and Lepton Number Violating Decays τ→Λτ→Λ h

Abstract

Conference

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