Search for the semileptonic decays Ds+ →k1 (1270)0e+νe and Ds+ →b1 (1235)0e+νe

BESIII Collaboration; N. Kalantar-Nayestanaki; Rosa Kappert; M. Kavatsyuk; J. Messchendorp; Viktor Rodin

doi:10.1103/PhysRevD.108.112002

Search for the semileptonic decays Ds+ →k1 (1270)0e+νe and Ds+ →b1 (1235)0e+νe

BESIII Collaboration, N. Kalantar-Nayestanaki, Rosa Kappert, M. Kavatsyuk, J. Messchendorp, Viktor Rodin

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Abstract

By analyzing 7.33 fb−1 of e+e− collision data collected at center-of-mass energies between 4.128 and 4.226 GeV with the BESIII detector, we search for the semileptonic decays D+s→K1(1270)0e+νe and D+s→b1(1235)0e+νe for the first time. No significant signals are observed for either decay mode. The upper limits on the (product) branching fractions are determined to be B[D+s→K1(1270)0e+νe]<4.1×10−4 and B[D+s→b1(1235)0e+νe]⋅B[b1(1235)0→ωπ0]<6.4×10−4 at 90% confidence level.

Original language	English
Article number	112002
Number of pages	11
Journal	Physical Review D
Volume	108
Issue number	11
DOIs	https://doi.org/10.1103/PhysRevD.108.112002
Publication status	Published - 4-Dec-2023

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Search for the semileptonic decays D + s → K 1 ( 1270 ) 0 e + ν e and D + s → b 1 ( 1235 ) 0 e + ν eFinal publisher's version, 425 KBLicence: CC BY

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@article{c7e4c3cf126d4177aab6cef33602a5b4,

title = "Search for the semileptonic decays Ds+ →k1 (1270)0e+νe and Ds+ →b1 (1235)0e+νe",

abstract = "By analyzing 7.33 fb−1 of e+e− collision data collected at center-of-mass energies between 4.128 and 4.226 GeV with the BESIII detector, we search for the semileptonic decays D+s→K1(1270)0e+νe and D+s→b1(1235)0e+νe for the first time. No significant signals are observed for either decay mode. The upper limits on the (product) branching fractions are determined to be B[D+s→K1(1270)0e+νe]<4.1×10−4 and B[D+s→b1(1235)0e+νe]⋅B[b1(1235)0→ωπ0]<6.4×10−4 at 90\% confidence level.",

author = "\{BESIII Collaboration\} and M. Ablikim and Achasov, \{M. N.\} and N. Kalantar-Nayestanaki and Rosa Kappert and M. Kavatsyuk and J. Messchendorp and Viktor Rodin",

year = "2023",

month = dec,

day = "4",

doi = "10.1103/PhysRevD.108.112002",

language = "English",

volume = "108",

journal = "Physical Review D",

issn = "2470-0010",

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TY - JOUR

T1 - Search for the semileptonic decays Ds+ →k1 (1270)0e+νe and Ds+ →b1 (1235)0e+νe

AU - BESIII Collaboration

AU - Ablikim, M.

AU - Achasov, M. N.

AU - Kalantar-Nayestanaki, N.

AU - Kappert, Rosa

AU - Kavatsyuk, M.

AU - Messchendorp, J.

AU - Rodin, Viktor

PY - 2023/12/4

Y1 - 2023/12/4

N2 - By analyzing 7.33 fb−1 of e+e− collision data collected at center-of-mass energies between 4.128 and 4.226 GeV with the BESIII detector, we search for the semileptonic decays D+s→K1(1270)0e+νe and D+s→b1(1235)0e+νe for the first time. No significant signals are observed for either decay mode. The upper limits on the (product) branching fractions are determined to be B[D+s→K1(1270)0e+νe]<4.1×10−4 and B[D+s→b1(1235)0e+νe]⋅B[b1(1235)0→ωπ0]<6.4×10−4 at 90% confidence level.

AB - By analyzing 7.33 fb−1 of e+e− collision data collected at center-of-mass energies between 4.128 and 4.226 GeV with the BESIII detector, we search for the semileptonic decays D+s→K1(1270)0e+νe and D+s→b1(1235)0e+νe for the first time. No significant signals are observed for either decay mode. The upper limits on the (product) branching fractions are determined to be B[D+s→K1(1270)0e+νe]<4.1×10−4 and B[D+s→b1(1235)0e+νe]⋅B[b1(1235)0→ωπ0]<6.4×10−4 at 90% confidence level.

U2 - 10.1103/PhysRevD.108.112002

DO - 10.1103/PhysRevD.108.112002

M3 - Letter

SN - 2470-0010

VL - 108

JO - Physical Review D

JF - Physical Review D

IS - 11

M1 - 112002

ER -

Search for the semileptonic decays Ds+ →k1 (1270)0e+νe and Ds+ →b1 (1235)0e+νe

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