Standard

Measurements of Born cross sections for e+e−→Λc+Λ¯c(2595)−+c.c. and e+e−→Λc+Λ¯c(2625)−+c.c. at s=4918.0 and 4950.9 MeV. / BESIII Collaboration ; Николаев, Иван Борисович; Мучной, Николай Юрьевич.

In: Physical Review D, Vol. 109, No. 7, L071104, 30.04.2024.

Research output: Contribution to journal › Article › peer-review

Harvard

BESIII Collaboration, Николаев, ИБ & Мучной, НЮ 2024, 'Measurements of Born cross sections for e+e−→Λc+Λ¯c(2595)−+c.c. and e+e−→Λc+Λ¯c(2625)−+c.c. at s=4918.0 and 4950.9 MeV', Physical Review D, vol. 109, no. 7, L071104. https://doi.org/10.1103/PhysRevD.109.L071104

APA

BESIII Collaboration, Николаев, И. Б., & Мучной, Н. Ю. (2024). Measurements of Born cross sections for e+e−→Λc+Λ¯c(2595)−+c.c. and e+e−→Λc+Λ¯c(2625)−+c.c. at s=4918.0 and 4950.9 MeV. Physical Review D, 109(7), [L071104]. https://doi.org/10.1103/PhysRevD.109.L071104

Vancouver

BESIII Collaboration, Николаев ИБ, Мучной НЮ. Measurements of Born cross sections for e+e−→Λc+Λ¯c(2595)−+c.c. and e+e−→Λc+Λ¯c(2625)−+c.c. at s=4918.0 and 4950.9 MeV. Physical Review D. 2024 Apr 30;109(7):L071104. doi: 10.1103/PhysRevD.109.L071104

Author

BESIII Collaboration ; Николаев, Иван Борисович ; Мучной, Николай Юрьевич. / Measurements of Born cross sections for e+e−→Λc+Λ¯c(2595)−+c.c. and e+e−→Λc+Λ¯c(2625)−+c.c. at s=4918.0 and 4950.9 MeV. In: Physical Review D. 2024 ; Vol. 109, No. 7.

BibTeX

@article{fe8fa2cf4934457597e32763d864cdde,
title = "Measurements of Born cross sections for e+e−→Λc+Λ¯c(2595)−+c.c. and e+e−→Λc+Λ¯c(2625)−+c.c. at s=4918.0 and 4950.9 MeV",
abstract = "Using e+e- collision data collected with the BESIII detector operating at the BEPCII collider, the Born cross sections of e+e-→Λc+Λ¯c(2595)-+c.c. and e+e-→Λc+Λ¯c(2625)-+c.c. are measured for the first time at center-of-mass energies of s=4918.0 and 4950.9 MeV. Nonzero cross sections are observed very close to the production threshold. The measured Born cross sections of e+e-→Λc+Λ¯c(2625)-+c.c. are about 2-3 times greater than those of e+e-→Λc+Λ¯c(2595)-+c.c., providing the similar behavior as semileptonic decays of Λb0, but different behavior from that in the hadronic decays of Λb0. The Born cross sections are 15.6±3.1±0.9 pb and 29.4±3.7±2.7 pb for e+e-→Λc+Λ¯c(2595)-+c.c., and are 43.4±4.0±4.1 pb and 76.8±6.5±4.2 pb for e+e-→Λc+Λ¯c(2625)-+c.c. at s=4918.0 and 4950.9 MeV, respectively. Based on the polar angle distributions of the Λ¯c(2625)- and Λc(2625)+, the form-factor ratios |GE|2+3|GM|2/|GC| are determined for e+e-→Λc+Λ¯c(2625)-+c.c. for the first time, which are 5.95±4.07±0.15 and 0.94±0.32±0.02 at s=4918.0 and 4950.9 MeV, respectively. All of these first uncertainties are statistical and second systematic. ",
author = "{BESIII Collaboration} and M. Ablikim and M. n. Achasov and Николаев, {Иван Борисович} and Мучной, {Николай Юрьевич}",
year = "2024",
month = apr,
day = "30",
doi = "10.1103/PhysRevD.109.L071104",
language = "English",
volume = "109",
journal = "Physical Review D",
issn = "2470-0010",
publisher = "American Physical Society",
number = "7",

}

RIS

TY - JOUR

T1 - Measurements of Born cross sections for e+e−→Λc+Λ¯c(2595)−+c.c. and e+e−→Λc+Λ¯c(2625)−+c.c. at s=4918.0 and 4950.9 MeV

AU - BESIII Collaboration

AU - Ablikim, M.

AU - Achasov, M. n.

AU - Николаев, Иван Борисович

AU - Мучной, Николай Юрьевич

PY - 2024/4/30

Y1 - 2024/4/30

N2 - Using e+e- collision data collected with the BESIII detector operating at the BEPCII collider, the Born cross sections of e+e-→Λc+Λ¯c(2595)-+c.c. and e+e-→Λc+Λ¯c(2625)-+c.c. are measured for the first time at center-of-mass energies of s=4918.0 and 4950.9 MeV. Nonzero cross sections are observed very close to the production threshold. The measured Born cross sections of e+e-→Λc+Λ¯c(2625)-+c.c. are about 2-3 times greater than those of e+e-→Λc+Λ¯c(2595)-+c.c., providing the similar behavior as semileptonic decays of Λb0, but different behavior from that in the hadronic decays of Λb0. The Born cross sections are 15.6±3.1±0.9 pb and 29.4±3.7±2.7 pb for e+e-→Λc+Λ¯c(2595)-+c.c., and are 43.4±4.0±4.1 pb and 76.8±6.5±4.2 pb for e+e-→Λc+Λ¯c(2625)-+c.c. at s=4918.0 and 4950.9 MeV, respectively. Based on the polar angle distributions of the Λ¯c(2625)- and Λc(2625)+, the form-factor ratios |GE|2+3|GM|2/|GC| are determined for e+e-→Λc+Λ¯c(2625)-+c.c. for the first time, which are 5.95±4.07±0.15 and 0.94±0.32±0.02 at s=4918.0 and 4950.9 MeV, respectively. All of these first uncertainties are statistical and second systematic.

AB - Using e+e- collision data collected with the BESIII detector operating at the BEPCII collider, the Born cross sections of e+e-→Λc+Λ¯c(2595)-+c.c. and e+e-→Λc+Λ¯c(2625)-+c.c. are measured for the first time at center-of-mass energies of s=4918.0 and 4950.9 MeV. Nonzero cross sections are observed very close to the production threshold. The measured Born cross sections of e+e-→Λc+Λ¯c(2625)-+c.c. are about 2-3 times greater than those of e+e-→Λc+Λ¯c(2595)-+c.c., providing the similar behavior as semileptonic decays of Λb0, but different behavior from that in the hadronic decays of Λb0. The Born cross sections are 15.6±3.1±0.9 pb and 29.4±3.7±2.7 pb for e+e-→Λc+Λ¯c(2595)-+c.c., and are 43.4±4.0±4.1 pb and 76.8±6.5±4.2 pb for e+e-→Λc+Λ¯c(2625)-+c.c. at s=4918.0 and 4950.9 MeV, respectively. Based on the polar angle distributions of the Λ¯c(2625)- and Λc(2625)+, the form-factor ratios |GE|2+3|GM|2/|GC| are determined for e+e-→Λc+Λ¯c(2625)-+c.c. for the first time, which are 5.95±4.07±0.15 and 0.94±0.32±0.02 at s=4918.0 and 4950.9 MeV, respectively. All of these first uncertainties are statistical and second systematic.

UR - https://www.scopus.com/record/display.uri?eid=2-s2.0-85192144604&origin=inward&txGid=4a6aa341a380a692a91883b869bdd63e

U2 - 10.1103/PhysRevD.109.L071104

DO - 10.1103/PhysRevD.109.L071104

M3 - Article

VL - 109

JO - Physical Review D

JF - Physical Review D

SN - 2470-0010

IS - 7

M1 - L071104

ER -

ID: 62715558