Precision Measurement of the Beam-Normal Single-Spin Asymmetry in Forward-Angle Elastic Electron-Proton Scattering.

Journal

Physical review letters
ISSN: 1079-7114
Titre abrégé: Phys Rev Lett
Pays: United States
ID NLM: 0401141

Informations de publication

Date de publication:
11 Sep 2020
Historique:
received: 23 06 2020
revised: 07 08 2020
accepted: 11 08 2020
entrez: 25 9 2020
pubmed: 26 9 2020
medline: 26 9 2020
Statut: ppublish

Résumé

A beam-normal single-spin asymmetry generated in the scattering of transversely polarized electrons from unpolarized nucleons is an observable related to the imaginary part of the two-photon exchange process. We report a 2% precision measurement of the beam-normal single-spin asymmetry in elastic electron-proton scattering with a mean scattering angle of θ_{lab}=7.9° and a mean energy of 1.149 GeV. The asymmetry result is B_{n}=-5.194±0.067(stat)±0.082 (syst) ppm. This is the most precise measurement of this quantity available to date and therefore provides a stringent test of two-photon exchange models at far-forward scattering angles (θ_{lab}→0) where they should be most reliable.

Identifiants

DOI: 10.1103/PhysRevLett.125.112502 PMID: 32976004
pubmed: 32976004
doi: 10.1103/PhysRevLett.125.112502
doi:

Types de publication

Journal Article

Langues

eng

Sous-ensembles de citation

IM

Pagination

112502

Auteurs

D Androić (D)

University of Zagreb, Zagreb, HR 10002, Croatia.

D S Armstrong (DS)

William & Mary, Williamsburg, Virginia 23185, USA.

A Asaturyan (A)

A. I. Alikhanyan National Science Laboratory (Yerevan Physics Institute), Yerevan 0036, Armenia.

K Bartlett (K)

William & Mary, Williamsburg, Virginia 23185, USA.

J Beaufait (J)

Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA.

R S Beminiwattha (RS)

Ohio University, Athens, Ohio 45701, USA.
Louisiana Tech University, Ruston, Louisiana 71272, USA.

J Benesch (J)

Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA.

F Benmokhtar (F)

Duquesne University, Pittburgh, Pennsylvania 15282, USA.

J Birchall (J)

University of Manitoba, Winnipeg, Manitoba R3T2N2, Canada.

R D Carlini (RD)

William & Mary, Williamsburg, Virginia 23185, USA.
Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA.

J C Cornejo (JC)

William & Mary, Williamsburg, Virginia 23185, USA.

S Covrig Dusa (SC)

Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA.

M M Dalton (MM)

Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA.
University of Virginia, Charlottesville, Virginia 22903, USA.

C A Davis (CA)

TRIUMF, Vancouver, British Columbia V6T2A3, Canada.

W Deconinck (W)

William & Mary, Williamsburg, Virginia 23185, USA.

J F Dowd (JF)

William & Mary, Williamsburg, Virginia 23185, USA.

J A Dunne (JA)

Mississippi State University, Mississippi State, Mississippi 39762, USA.

D Dutta (D)

Mississippi State University, Mississippi State, Mississippi 39762, USA.

W S Duvall (WS)

Virginia Polytechnic Institute & State University, Blacksburg, Virginia 24061, USA.

M Elaasar (M)

Southern University at New Orleans, New Orleans, Louisiana 70126, USA.

W R Falk (WR)

University of Manitoba, Winnipeg, Manitoba R3T2N2, Canada.

J M Finn (JM)

William & Mary, Williamsburg, Virginia 23185, USA.

T Forest (T)

Louisiana Tech University, Ruston, Louisiana 71272, USA.
Idaho State University, Pocatello, Idaho 83209, USA.

C Gal (C)

University of Virginia, Charlottesville, Virginia 22903, USA.

D Gaskell (D)

Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA.

M T W Gericke (MTW)

University of Manitoba, Winnipeg, Manitoba R3T2N2, Canada.

J Grames (J)

Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA.

V M Gray (VM)

William & Mary, Williamsburg, Virginia 23185, USA.

K Grimm (K)

William & Mary, Williamsburg, Virginia 23185, USA.
Louisiana Tech University, Ruston, Louisiana 71272, USA.

F Guo (F)

Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA.

J R Hoskins (JR)

William & Mary, Williamsburg, Virginia 23185, USA.

D Jones (D)

University of Virginia, Charlottesville, Virginia 22903, USA.

M K Jones (MK)

Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA.

R T Jones (RT)

University of Connecticut, Storrs-Mansfield, Connecticut 06269, USA.

M Kargiantoulakis (M)

University of Virginia, Charlottesville, Virginia 22903, USA.

P M King (PM)

Ohio University, Athens, Ohio 45701, USA.

E Korkmaz (E)

University of Northern British Columbia, Prince George, British Columbia V2N4Z9, Canada.

S Kowalski (S)

Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA.

J Leacock (J)

Virginia Polytechnic Institute & State University, Blacksburg, Virginia 24061, USA.

J P Leckey (JP)

William & Mary, Williamsburg, Virginia 23185, USA.

A R Lee (AR)

Virginia Polytechnic Institute & State University, Blacksburg, Virginia 24061, USA.

J H Lee (JH)

William & Mary, Williamsburg, Virginia 23185, USA.
Ohio University, Athens, Ohio 45701, USA.

L Lee (L)

University of Manitoba, Winnipeg, Manitoba R3T2N2, Canada.
TRIUMF, Vancouver, British Columbia V6T2A3, Canada.

S MacEwan (S)

University of Manitoba, Winnipeg, Manitoba R3T2N2, Canada.

D Mack (D)

Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA.

J A Magee (JA)

William & Mary, Williamsburg, Virginia 23185, USA.

R Mahurin (R)

University of Manitoba, Winnipeg, Manitoba R3T2N2, Canada.

J Mammei (J)

University of Manitoba, Winnipeg, Manitoba R3T2N2, Canada.
Virginia Polytechnic Institute & State University, Blacksburg, Virginia 24061, USA.

J W Martin (JW)

University of Winnipeg, Winnipeg, Manitoba R3B2E9, Canada.

M J McHugh (MJ)

George Washington University, Washington, DC 20052, USA.

D Meekins (D)

Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA.

J Mei (J)

Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA.

K E Mesick (KE)

George Washington University, Washington, DC 20052, USA.
Rutgers, The State University of New Jersey, Piscataway, New Jersey 088754, USA.

R Michaels (R)

Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA.

A Micherdzinska (A)

George Washington University, Washington, DC 20052, USA.

A Mkrtchyan (A)

A. I. Alikhanyan National Science Laboratory (Yerevan Physics Institute), Yerevan 0036, Armenia.

H Mkrtchyan (H)

A. I. Alikhanyan National Science Laboratory (Yerevan Physics Institute), Yerevan 0036, Armenia.

N Morgan (N)

Virginia Polytechnic Institute & State University, Blacksburg, Virginia 24061, USA.

A Narayan (A)

Mississippi State University, Mississippi State, Mississippi 39762, USA.

L Z Ndukum (LZ)

Mississippi State University, Mississippi State, Mississippi 39762, USA.

V Nelyubin (V)

University of Virginia, Charlottesville, Virginia 22903, USA.
Mississippi State University, Mississippi State, Mississippi 39762, USA.
Hampton University, Hampton, Virginia 23668, USA.

W T H van Oers (WTH)

University of Manitoba, Winnipeg, Manitoba R3T2N2, Canada.
TRIUMF, Vancouver, British Columbia V6T2A3, Canada.

V F Owen (VF)

William & Mary, Williamsburg, Virginia 23185, USA.

S A Page (SA)

University of Manitoba, Winnipeg, Manitoba R3T2N2, Canada.

J Pan (J)

University of Manitoba, Winnipeg, Manitoba R3T2N2, Canada.

K D Paschke (KD)

University of Virginia, Charlottesville, Virginia 22903, USA.

S K Phillips (SK)

University of New Hampshire, Durham, New Hampshire 03824, USA.

M L Pitt (ML)

Virginia Polytechnic Institute & State University, Blacksburg, Virginia 24061, USA.

R W Radloff (RW)

Ohio University, Athens, Ohio 45701, USA.

J F Rajotte (JF)

Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA.

W D Ramsay (WD)

University of Manitoba, Winnipeg, Manitoba R3T2N2, Canada.
TRIUMF, Vancouver, British Columbia V6T2A3, Canada.

J Roche (J)

Ohio University, Athens, Ohio 45701, USA.

B Sawatzky (B)

Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA.

T Seva (T)

University of Zagreb, Zagreb, HR 10002, Croatia.

M H Shabestari (MH)

Mississippi State University, Mississippi State, Mississippi 39762, USA.

R Silwal (R)

University of Virginia, Charlottesville, Virginia 22903, USA.

N Simicevic (N)

Louisiana Tech University, Ruston, Louisiana 71272, USA.

G R Smith (GR)

Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA.

P Solvignon (P)

Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA.

D T Spayde (DT)

Hendrix College, Conway, Arkansas 72032, USA.

A Subedi (A)

Mississippi State University, Mississippi State, Mississippi 39762, USA.

R Subedi (R)

George Washington University, Washington, DC 20052, USA.

R Suleiman (R)

Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA.

V Tadevosyan (V)

A. I. Alikhanyan National Science Laboratory (Yerevan Physics Institute), Yerevan 0036, Armenia.

W A Tobias (WA)

University of Virginia, Charlottesville, Virginia 22903, USA.

V Tvaskis (V)

University of Winnipeg, Winnipeg, Manitoba R3B2E9, Canada.

B Waidyawansa (B)

Ohio University, Athens, Ohio 45701, USA.
Louisiana Tech University, Ruston, Louisiana 71272, USA.

P Wang (P)

University of Manitoba, Winnipeg, Manitoba R3T2N2, Canada.

S P Wells (SP)

Louisiana Tech University, Ruston, Louisiana 71272, USA.

S A Wood (SA)

Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA.

S Yang (S)

William & Mary, Williamsburg, Virginia 23185, USA.

P Zang (P)

Syracuse University, Syracuse, New York 13244, USA.

S Zhamkochyan (S)

A. I. Alikhanyan National Science Laboratory (Yerevan Physics Institute), Yerevan 0036, Armenia.

Classifications MeSH