Measurement of Proton Electromagnetic Form Factors in e+e-→p p ̄ in the Energy Region 2.00-3.08 GeV

Standard

Measurement of Proton Electromagnetic Form Factors in e+e-→p p ̄ in the Energy Region 2.00-3.08 GeV. / BESIII Collaboration.

In: Physical Review Letters, Vol. 124, No. 4, 042001, 28.01.2020.

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

Harvard

BESIII Collaboration 2020, 'Measurement of Proton Electromagnetic Form Factors in e+e-→p p ̄ in the Energy Region 2.00-3.08 GeV', Physical Review Letters, vol. 124, no. 4, 042001. https://doi.org/10.1103/PhysRevLett.124.042001

APA

BESIII Collaboration (2020). Measurement of Proton Electromagnetic Form Factors in e+e-→p p ̄ in the Energy Region 2.00-3.08 GeV. Physical Review Letters, 124(4), [042001]. https://doi.org/10.1103/PhysRevLett.124.042001

Vancouver

BESIII Collaboration. Measurement of Proton Electromagnetic Form Factors in e+e-→p p ̄ in the Energy Region 2.00-3.08 GeV. Physical Review Letters. 2020 Jan 28;124(4):042001. doi: 10.1103/PhysRevLett.124.042001

Author

BESIII Collaboration. / Measurement of Proton Electromagnetic Form Factors in e+e-→p p ̄ in the Energy Region 2.00-3.08 GeV. In: Physical Review Letters. 2020 ; Vol. 124, No. 4.

BibTeX

@article{c76c4151d9974947b8fc6a735b8cac76,

title = "Measurement of Proton Electromagnetic Form Factors in e+e-→p p{\= } in the Energy Region 2.00-3.08 GeV",

abstract = "The process of e+e-→p{\=p} is studied at 22 center-of-mass energy points (s) from 2.00 to 3.08 GeV, exploiting 688.5 pb-1 of data collected with the BESIII detector operating at the BEPCII collider. The Born cross section (σp{\=p}) of e+e-→p{\=p} is measured with the energy-scan technique and it is found to be consistent with previously published data, but with much improved accuracy. In addition, the electromagnetic form-factor ratio (|GE/GM|) and the value of the effective (|Geff|), electric (|GE|), and magnetic (|GM|) form factors are measured by studying the helicity angle of the proton at 16 center-of-mass energy points. |GE/GM| and |GM| are determined with high accuracy, providing uncertainties comparable to data in the spacelike region, and |GE| is measured for the first time. We reach unprecedented accuracy, and precision results in the timelike region provide information to improve our understanding of the proton inner structure and to test theoretical models which depend on nonperturbative quantum chromodynamics.",

author = "{BESIII Collaboration} and M. Ablikim and Achasov, {M. N.} and P. Adlarson and S. Ahmed and M. Albrecht and M. Alekseev and A. Amoroso and An, {F. F.} and Q. An and Anita and Y. Bai and O. Bakina and {Baldini Ferroli}, R. and I. Balossino and Y. Ban and K. Begzsuren and Bennett, {J. V.} and N. Berger and M. Bertani and D. Bettoni and F. Bianchi and J. Biernat and J. Bloms and I. Boyko and Briere, {R. A.} and H. Cai and X. Cai and A. Calcaterra and Cao, {G. F.} and N. Cao and Cetin, {S. A.} and J. Chai and Chang, {J. F.} and Chang, {W. L.} and G. Chelkov and Chen, {D. Y.} and G. Chen and Chen, {H. S.} and J. Chen and Chen, {M. L.} and Chen, {S. J.} and Chen, {X. R.} and Chen, {Y. B.} and W. Cheng and G. Cibinetto and F. Cossio and Cui, {X. F.} and Dai, {H. L.} and Muchnoi, {N. Yu} and Nikolaev, {I. B.}",

year = "2020",

month = jan,

day = "28",

doi = "10.1103/PhysRevLett.124.042001",

language = "English",

volume = "124",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "4",

}

RIS

TY - JOUR

T1 - Measurement of Proton Electromagnetic Form Factors in e+e-→p p ̄ in the Energy Region 2.00-3.08 GeV

AU - BESIII Collaboration

AU - Ablikim, M.

AU - Achasov, M. N.

AU - Adlarson, P.

AU - Ahmed, S.

AU - Albrecht, M.

AU - Alekseev, M.

AU - Amoroso, A.

AU - An, F. F.

AU - An, Q.

AU - Anita,

AU - Bai, Y.

AU - Bakina, O.

AU - Baldini Ferroli, R.

AU - Balossino, I.

AU - Ban, Y.

AU - Begzsuren, K.

AU - Bennett, J. V.

AU - Berger, N.

AU - Bertani, M.

AU - Bettoni, D.

AU - Bianchi, F.

AU - Biernat, J.

AU - Bloms, J.

AU - Boyko, I.

AU - Briere, R. A.

AU - Cai, H.

AU - Cai, X.

AU - Calcaterra, A.

AU - Cao, G. F.

AU - Cao, N.

AU - Cetin, S. A.

AU - Chai, J.

AU - Chang, J. F.

AU - Chang, W. L.

AU - Chelkov, G.

AU - Chen, D. Y.

AU - Chen, G.

AU - Chen, H. S.

AU - Chen, J.

AU - Chen, M. L.

AU - Chen, S. J.

AU - Chen, X. R.

AU - Chen, Y. B.

AU - Cheng, W.

AU - Cibinetto, G.

AU - Cossio, F.

AU - Cui, X. F.

AU - Dai, H. L.

AU - Muchnoi, N. Yu

AU - Nikolaev, I. B.

PY - 2020/1/28

Y1 - 2020/1/28

N2 - The process of e+e-→pp̄ is studied at 22 center-of-mass energy points (s) from 2.00 to 3.08 GeV, exploiting 688.5 pb-1 of data collected with the BESIII detector operating at the BEPCII collider. The Born cross section (σpp̄) of e+e-→pp̄ is measured with the energy-scan technique and it is found to be consistent with previously published data, but with much improved accuracy. In addition, the electromagnetic form-factor ratio (|GE/GM|) and the value of the effective (|Geff|), electric (|GE|), and magnetic (|GM|) form factors are measured by studying the helicity angle of the proton at 16 center-of-mass energy points. |GE/GM| and |GM| are determined with high accuracy, providing uncertainties comparable to data in the spacelike region, and |GE| is measured for the first time. We reach unprecedented accuracy, and precision results in the timelike region provide information to improve our understanding of the proton inner structure and to test theoretical models which depend on nonperturbative quantum chromodynamics.

AB - The process of e+e-→pp̄ is studied at 22 center-of-mass energy points (s) from 2.00 to 3.08 GeV, exploiting 688.5 pb-1 of data collected with the BESIII detector operating at the BEPCII collider. The Born cross section (σpp̄) of e+e-→pp̄ is measured with the energy-scan technique and it is found to be consistent with previously published data, but with much improved accuracy. In addition, the electromagnetic form-factor ratio (|GE/GM|) and the value of the effective (|Geff|), electric (|GE|), and magnetic (|GM|) form factors are measured by studying the helicity angle of the proton at 16 center-of-mass energy points. |GE/GM| and |GM| are determined with high accuracy, providing uncertainties comparable to data in the spacelike region, and |GE| is measured for the first time. We reach unprecedented accuracy, and precision results in the timelike region provide information to improve our understanding of the proton inner structure and to test theoretical models which depend on nonperturbative quantum chromodynamics.

UR - http://www.scopus.com/inward/record.url?scp=85079543600&partnerID=8YFLogxK

U2 - 10.1103/PhysRevLett.124.042001

DO - 10.1103/PhysRevLett.124.042001

M3 - Article

C2 - 32058790

AN - SCOPUS:85079543600

VL - 124

JO - Physical Review Letters

JF - Physical Review Letters

SN - 0031-9007

IS - 4

M1 - 042001

ER -

ID: 27910088