Measurement of the e+e- → Λ ς ¯ 0+c.c. cross sections at s from 2.3094 to 3.0800 GeV

BESIII Collaboration; N. Kalantar-Nayestanaki; R. Kappert; M. Kavatsyuk; J. Messchendorp; V. Rodin

doi:10.1103/PhysRevD.109.012002

Measurement of the e+e- → Λ ς ¯ 0+c.c. cross sections at s from 2.3094 to 3.0800 GeV

BESIII Collaboration, N. Kalantar-Nayestanaki, R. Kappert, M. Kavatsyuk, J. Messchendorp, V. Rodin

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Abstract

The Born cross sections and effective form factors of the process e+e-→Λς¯0+c.c. are measured at 14 center-of-mass energy points from 2.3094 to 3.0800 GeV, based on data corresponding to an integrated luminosity of (478.5±4.8) pb-1 collected with the BESIII detector. A nonzero Born cross section is observed at the center-of-mass energy of 2.3094 GeV with a statistical significance of more than five standard deviations, and the cross sections at other energies are obtained with improved precision compared to earlier measurements from the BABAR Collaboration. The Born cross-section line shape is described better by a shape considering the strong-interaction effects than by a pQCD motivated functional form. © 2024 authors. Published by the American Physical Society.

Original language	English
Article number	012002
Number of pages	11
Journal	Physical Review D
Volume	109
Issue number	1
DOIs	https://doi.org/10.1103/PhysRevD.109.012002
Publication status	Published - 1-Jan-2024

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Measurement of the e + e − → Λ ¯ Σ 0 + c . c . cross sections at √ s from 2.3094 to 3.0800 GeVFinal publisher's version, 501 KBLicence: CC BY

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title = "Measurement of the e+e- → Λ ς ¯ 0+c.c. cross sections at s from 2.3094 to 3.0800 GeV",

abstract = "The Born cross sections and effective form factors of the process e+e-→Λς¯0+c.c. are measured at 14 center-of-mass energy points from 2.3094 to 3.0800 GeV, based on data corresponding to an integrated luminosity of (478.5±4.8) pb-1 collected with the BESIII detector. A nonzero Born cross section is observed at the center-of-mass energy of 2.3094 GeV with a statistical significance of more than five standard deviations, and the cross sections at other energies are obtained with improved precision compared to earlier measurements from the BABAR Collaboration. The Born cross-section line shape is described better by a shape considering the strong-interaction effects than by a pQCD motivated functional form. {\textcopyright} 2024 authors. Published by the American Physical Society.",

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

year = "2024",

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doi = "10.1103/PhysRevD.109.012002",

language = "English",

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T1 - Measurement of the e+e- → Λ ς ¯ 0+c.c. cross sections at s from 2.3094 to 3.0800 GeV

AU - BESIII Collaboration

AU - Ablikim, M.

AU - Achasov, M. N.

AU - Kalantar-Nayestanaki, N.

AU - Kappert, R.

AU - Kavatsyuk, M.

AU - Messchendorp, J.

AU - Rodin, V.

PY - 2024/1/1

Y1 - 2024/1/1

N2 - The Born cross sections and effective form factors of the process e+e-→Λς¯0+c.c. are measured at 14 center-of-mass energy points from 2.3094 to 3.0800 GeV, based on data corresponding to an integrated luminosity of (478.5±4.8) pb-1 collected with the BESIII detector. A nonzero Born cross section is observed at the center-of-mass energy of 2.3094 GeV with a statistical significance of more than five standard deviations, and the cross sections at other energies are obtained with improved precision compared to earlier measurements from the BABAR Collaboration. The Born cross-section line shape is described better by a shape considering the strong-interaction effects than by a pQCD motivated functional form. © 2024 authors. Published by the American Physical Society.

AB - The Born cross sections and effective form factors of the process e+e-→Λς¯0+c.c. are measured at 14 center-of-mass energy points from 2.3094 to 3.0800 GeV, based on data corresponding to an integrated luminosity of (478.5±4.8) pb-1 collected with the BESIII detector. A nonzero Born cross section is observed at the center-of-mass energy of 2.3094 GeV with a statistical significance of more than five standard deviations, and the cross sections at other energies are obtained with improved precision compared to earlier measurements from the BABAR Collaboration. The Born cross-section line shape is described better by a shape considering the strong-interaction effects than by a pQCD motivated functional form. © 2024 authors. Published by the American Physical Society.

U2 - 10.1103/PhysRevD.109.012002

DO - 10.1103/PhysRevD.109.012002

M3 - Article

SN - 2470-0010

VL - 109

JO - Physical Review D

JF - Physical Review D

IS - 1

M1 - 012002

ER -

Measurement of the e+e- → Λ ς ¯ 0+c.c. cross sections at s from 2.3094 to 3.0800 GeV

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