Determination of the Σ+ Timelike Electromagnetic Form Factors

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Determination of the Σ+ Timelike Electromagnetic Form Factors. / The BESIII Collaboration ; Николаев, Иван Борисович ; Мучной, Николай Юрьевич.

в: Physical Review Letters, Том 132, № 8, 081904, 23.02.2024, стр. 081904.

Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование

BibTeX

@article{0689e3cd8c9b4551bd8e2801ec8ca0cc,

title = "Determination of the Σ+ Timelike Electromagnetic Form Factors",

abstract = "Based on data samples collected with the BESIII detector at the BEPCII collider, the process e+e-→ς+ς¯- is studied at center-of-mass energies s=2.3960, 2.6454, and 2.9000 GeV. Using a fully differential angular description of the final state particles, both the relative magnitude and phase information of the ς+ electromagnetic form factors in the timelike region are extracted. The relative phase between the electric and magnetic form factors is determined to be sinΔφ=-0.67±0.29(stat)±0.18(syst) at s=2.3960 GeV, Δφ=55°±19°(stat)±14°(syst) at s=2.6454 GeV, and 78°±22°(stat)±9°(syst) at s=2.9000 GeV. For the first time, the phase of the hyperon electromagnetic form factors is explored in a wide range of four-momentum transfer. The evolution of the phase along with four-momentum transfer is an important input for understanding its asymptotic behavior and the dynamics of baryons.",

author = "{BESIII Collaboration} and M. Ablikim and M. n. Achasov and Николаев, {Иван Борисович} and Мучной, {Николай Юрьевич}",

year = "2024",

month = feb,

day = "23",

doi = "10.1103/PhysRevLett.132.081904",

language = "English",

volume = "132",

pages = "081904",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "8",

}

RIS

TY - JOUR

T1 - Determination of the Σ+ Timelike Electromagnetic Form Factors

AU - BESIII Collaboration

AU - Ablikim, M.

AU - Achasov, M. n.

AU - Николаев, Иван Борисович

AU - Мучной, Николай Юрьевич

PY - 2024/2/23

Y1 - 2024/2/23

N2 - Based on data samples collected with the BESIII detector at the BEPCII collider, the process e+e-→ς+ς¯- is studied at center-of-mass energies s=2.3960, 2.6454, and 2.9000 GeV. Using a fully differential angular description of the final state particles, both the relative magnitude and phase information of the ς+ electromagnetic form factors in the timelike region are extracted. The relative phase between the electric and magnetic form factors is determined to be sinΔφ=-0.67±0.29(stat)±0.18(syst) at s=2.3960 GeV, Δφ=55°±19°(stat)±14°(syst) at s=2.6454 GeV, and 78°±22°(stat)±9°(syst) at s=2.9000 GeV. For the first time, the phase of the hyperon electromagnetic form factors is explored in a wide range of four-momentum transfer. The evolution of the phase along with four-momentum transfer is an important input for understanding its asymptotic behavior and the dynamics of baryons.

AB - Based on data samples collected with the BESIII detector at the BEPCII collider, the process e+e-→ς+ς¯- is studied at center-of-mass energies s=2.3960, 2.6454, and 2.9000 GeV. Using a fully differential angular description of the final state particles, both the relative magnitude and phase information of the ς+ electromagnetic form factors in the timelike region are extracted. The relative phase between the electric and magnetic form factors is determined to be sinΔφ=-0.67±0.29(stat)±0.18(syst) at s=2.3960 GeV, Δφ=55°±19°(stat)±14°(syst) at s=2.6454 GeV, and 78°±22°(stat)±9°(syst) at s=2.9000 GeV. For the first time, the phase of the hyperon electromagnetic form factors is explored in a wide range of four-momentum transfer. The evolution of the phase along with four-momentum transfer is an important input for understanding its asymptotic behavior and the dynamics of baryons.

UR - https://www.scopus.com/record/display.uri?eid=2-s2.0-85186195209&origin=inward&txGid=b54fec9140a86aa31d9842a3c7aa7387

UR - https://pubmed.ncbi.nlm.nih.gov/38457707/

U2 - 10.1103/PhysRevLett.132.081904

DO - 10.1103/PhysRevLett.132.081904

M3 - Article

C2 - 38457707

VL - 132

SP - 081904

JO - Physical Review Letters

JF - Physical Review Letters

SN - 0031-9007

IS - 8

M1 - 081904

ER -

ID: 62717813