Search for the rare decay of Psi(3686) -> Lambda+pe(+)e(-) +c.c. at BESIII

BESIII Collaboration; Z. Haddadi; N. Kalantar-Nayestanaki; M. Kavatsyuk; J. G. Messchendorp; M. Tiemens

doi:10.1103/PhysRevD.97.091102

Search for the rare decay of Psi(3686) -> Lambda+pe(+)e(-) +c.c. at BESIII

BESIII Collaboration, Z. Haddadi, N. Kalantar-Nayestanaki, M. Kavatsyuk, J. G. Messchendorp, M. Tiemens

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Abstract

Based on a data sample of (448.1 +/- 2.9) x 10(6)Psi(3686) decays collected with the BESIII experiment, a search for the flavor changing neutral current transition Psi(3686) -> Lambda(+)(c) pe(+) e(-) + c.c. is performed for the first time. No signal candidates are observed and the upper limit on the branching fraction of Psi(3686) -> Lambda(+)(c) pe(+) e(-) is determined to be 1.7 x 10(-6) at the 90% confidence level. The result is consistent with expectations from the standard model, and no evidence for new physics is found.

Original language	English
Article number	091102
Number of pages	7
Journal	Physical Review D
Volume	97
Issue number	9
DOIs	https://doi.org/10.1103/PhysRevD.97.091102
Publication status	Published - 4-May-2018

Keywords

EVENT GENERATORS
WEAK DECAYS

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@article{e82c7234a4334638a3c7f79aaa6f674f,

title = "Search for the rare decay of Psi(3686) -> Lambda+pe(+)e(-) +c.c. at BESIII",

abstract = "Based on a data sample of (448.1 +/- 2.9) x 10(6)Psi(3686) decays collected with the BESIII experiment, a search for the flavor changing neutral current transition Psi(3686) -> Lambda(+)(c) pe(+) e(-) + c.c. is performed for the first time. No signal candidates are observed and the upper limit on the branching fraction of Psi(3686) -> Lambda(+)(c) pe(+) e(-) is determined to be 1.7 x 10(-6) at the 90% confidence level. The result is consistent with expectations from the standard model, and no evidence for new physics is found.",

keywords = "EVENT GENERATORS, WEAK DECAYS",

author = "{BESIII Collaboration} and Z. Haddadi and N. Kalantar-Nayestanaki and M. Kavatsyuk and Messchendorp, {J. G.} and M. Tiemens",

year = "2018",

month = may,

day = "4",

doi = "10.1103/PhysRevD.97.091102",

language = "English",

volume = "97",

journal = "Physical Review D",

issn = "2470-0010",

publisher = "AMER PHYSICAL SOC",

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TY - JOUR

T1 - Search for the rare decay of Psi(3686) -> Lambda+pe(+)e(-) +c.c. at BESIII

AU - BESIII Collaboration

AU - Haddadi, Z.

AU - Kalantar-Nayestanaki, N.

AU - Kavatsyuk, M.

AU - Messchendorp, J. G.

AU - Tiemens, M.

PY - 2018/5/4

Y1 - 2018/5/4

N2 - Based on a data sample of (448.1 +/- 2.9) x 10(6)Psi(3686) decays collected with the BESIII experiment, a search for the flavor changing neutral current transition Psi(3686) -> Lambda(+)(c) pe(+) e(-) + c.c. is performed for the first time. No signal candidates are observed and the upper limit on the branching fraction of Psi(3686) -> Lambda(+)(c) pe(+) e(-) is determined to be 1.7 x 10(-6) at the 90% confidence level. The result is consistent with expectations from the standard model, and no evidence for new physics is found.

AB - Based on a data sample of (448.1 +/- 2.9) x 10(6)Psi(3686) decays collected with the BESIII experiment, a search for the flavor changing neutral current transition Psi(3686) -> Lambda(+)(c) pe(+) e(-) + c.c. is performed for the first time. No signal candidates are observed and the upper limit on the branching fraction of Psi(3686) -> Lambda(+)(c) pe(+) e(-) is determined to be 1.7 x 10(-6) at the 90% confidence level. The result is consistent with expectations from the standard model, and no evidence for new physics is found.

KW - EVENT GENERATORS

KW - WEAK DECAYS

U2 - 10.1103/PhysRevD.97.091102

DO - 10.1103/PhysRevD.97.091102

M3 - Article

SN - 2470-0010

VL - 97

JO - Physical Review D

JF - Physical Review D

IS - 9

M1 - 091102

ER -

Search for the rare decay of Psi(3686) -> Lambda+pe(+)e(-) +c.c. at BESIII

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