Searches for the baryon- and lepton-number violating decays $B^0\rightarrow\Lambda_c^+\ell^-$, $B^-\rightarrow\Lambda\ell^-$, and $B^-\rightarrow\bar{\Lambda}\ell^-$

P. del Amo Sanchez; J. P. Lees; V. Poireau; E. Prencipe; V. Tisserand; D. Bernard; M. Verderi; N. Arnaud; M. Davier; D. Derkach; J. Firmino da Costa; G. Grosdidier; F. Le Diberder; A. M. Lutz; B. Malaescu; A. Perez; P. Roudeau; M. H. Schune; J. Serrano; V. Sordini; A. Stocchi; L. Wang; G. Wormser; E. Ben-Haim; M. Bomben; G. R. Bonneaud; H. Briand; G. Calderini; J. Chauveau; O. Hamon; Ph. Leruste; G. Marchiori; J. Ocariz; J. Prendki; S. Sitt; S. Emery; G. Hamel de Monchenault; G. Vasseur; Ch. Yèche

doi:10.1103/PhysRevD.83.091101

Journal articles

Searches for the baryon- and lepton-number violating decays $B^0\rightarrow\Lambda_c^+\ell^-$, $B^-\rightarrow\Lambda\ell^-$, and $B^-\rightarrow\bar{\Lambda}\ell^-$

P. del Amo Sanchez ¹ J. P. Lees ¹ V. Poireau ¹ E. Prencipe ¹ V. Tisserand ¹ D. Bernard ² M. Verderi ² N. Arnaud ³ M. Davier ³ D. Derkach ³ J. Firmino da Costa ³ G. Grosdidier ³ F. Le Diberder ³ A. M. Lutz ³ B. Malaescu ³ A. Perez ³ P. Roudeau ³ M. H. Schune ³ J. Serrano ³ V. Sordini ³ A. Stocchi ³ L. Wang ³ G. Wormser ³ E. Ben-Haim ⁴ M. Bomben ⁴ G. R. Bonneaud ⁴ H. Briand ⁴ G. Calderini ⁴ J. Chauveau ⁴ O. Hamon ⁴ Ph. Leruste ⁴ G. Marchiori ⁴ J. Ocariz ⁴ J. Prendki ⁴ S. Sitt ⁴ S. Emery ⁵ G. Hamel de Monchenault ⁵ G. Vasseur ⁵ Ch. Yèche ⁵

1 LAPP - Laboratoire d'Annecy de Physique des Particules

2 LLR - Laboratoire Leprince-Ringuet

3 LAL - Laboratoire de l'Accélérateur Linéaire

4 LPNHE - Laboratoire de Physique Nucléaire et de Hautes Énergies

5 IRFU - Institut de Recherches sur les lois Fondamentales de l'Univers

Abstract : Searches for $B$ mesons decaying to final states containing a baryon and a lepton are performed, where the baryon is either $\Lambda_c$ or $\Lambda$ and the lepton is a muon or an electron. These decays violate both baryon and lepton number and would be a signature of physics beyond the standard model. No significant signal is observed in any of the decay modes, and upper limits in the range $(3.2-520) \times 10^{-8}$ are set on the branching fractions at the 90% confidence level.

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Journal articles

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Physics [physics] / High Energy Physics - Experiment [hep-ex]

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Submitted on : Tuesday, February 1, 2011 - 5:07:09 PM
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Searches for the baryon- and lepton-number violating decays $B^0\rightarrow\Lambda_c^+\ell^-$, $B^-\rightarrow\Lambda\ell^-$, and $B^-\rightarrow\bar{\Lambda}\ell^-$

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Searches for the baryon- and lepton-number violating decays $B^0\rightarrow\Lambda_c^+\ell^-$, $B^-\rightarrow\Lambda\ell^-$, and $B^-\rightarrow\bar{\Lambda}\ell^-$

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