Revealing Color Forces with Transverse Polarized Electron 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:
18 Jan 2019

Historique:

revised: 18 10 2018

received: 28 05 2018

entrez: 6 2 2019

pubmed: 6 2 2019

medline: 6 2 2019

Statut: ppublish

Résumé

The Spin Asymmetries of the Nucleon Experiment measured two double spin asymmetries using a polarized proton target and polarized electron beam at two beam energies, 4.7 and 5.9 GeV. A large-acceptance open-configuration detector package identified scattered electrons at 40° and covered a wide range in Bjorken x (0.3<x<0.8). Proportional to an average color Lorentz force, the twist-3 matrix element, d[over ˜]_{2}^{p}, was extracted from the measured asymmetries at Q^{2} values ranging from 2.0 to 6.0 GeV^{2}. The data display the opposite sign compared to most quark models, including the lattice QCD result, and an unexpected scale dependence. Furthermore, when combined with the neutron data in the same Q^{2} range the results suggest a flavor independent average color Lorentz force.

Identifiants

DOI: 10.1103/PhysRevLett.122.022002 PMID: 30720291

pubmed: 30720291

doi: 10.1103/PhysRevLett.122.022002

doi:

Types de publication

Journal Article

Langues

eng

Pagination

022002

Auteurs

W Armstrong (W)

Temple University, Philadelphia, Pennsylvania 19122, USA.

Argonne National Laboratory, Argonne, Illinois 60439, USA.

H Kang (H)

Seoul National University, Seoul, South Korea.

A Liyanage (A)

Hampton University, Hampton, Virginia 23669, USA.

J Maxwell (J)

University of Virginia, Charlottesville, Virginia 22904, USA.

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

J Mulholland (J)

University of Virginia, Charlottesville, Virginia 22904, USA.

L Ndukum (L)

Mississippi State University, Starkville, Mississippi 39759, USA.

A Ahmidouch (A)

North Carolina A&M State University, Greensboro, North Carolina 27411, USA.

I Albayrak (I)

Hampton University, Hampton, Virginia 23669, USA.

A Asaturyan (A)

Yerevan Physics Institute, 0036, Yerevan, Armenia.

O Ates (O)

Hampton University, Hampton, Virginia 23669, USA.

H Baghdasaryan (H)

University of Virginia, Charlottesville, Virginia 22904, USA.

W Boeglin (W)

Florida International University, Miami, Florida 33199, USA.

P Bosted (P)

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

E Brash (E)

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

Christopher Newport University, Newport News, Virginia 23606, USA.

C Butuceanu (C)

University of Regina, Regina, Saskatchewan, S4S 0A2, Canada.

M Bychkov (M)

University of Virginia, Charlottesville, Virginia 22904, USA.

P Carter (P)

Christopher Newport University, Newport News, Virginia 23606, USA.

C Chen (C)

Hampton University, Hampton, Virginia 23669, USA.

J-P Chen (JP)

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

S Choi (S)

Seoul National University, Seoul, South Korea.

M E Christy (ME)

Hampton University, Hampton, Virginia 23669, USA.

S Covrig (S)

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

D Crabb (D)

University of Virginia, Charlottesville, Virginia 22904, USA.

S Danagoulian (S)

North Carolina A&M State University, Greensboro, North Carolina 27411, USA.

A Daniel (A)

Ohio University, Athens, Ohio 45701, USA.

A M Davidenko (AM)

Kurchatov Institute-IHEP, Protvino, Moskva 123098, Russia.

B Davis (B)

North Carolina A&M State University, Greensboro, North Carolina 27411, USA.

D Day (D)

University of Virginia, Charlottesville, Virginia 22904, USA.

W Deconinck (W)

William & Mary, Williamsburg, Virginia 23185, USA.

A Deur (A)

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

J Dunne (J)

Mississippi State University, Starkville, Mississippi 39759, USA.

D Dutta (D)

Mississippi State University, Starkville, Mississippi 39759, USA.

L El Fassi (L)

Mississippi State University, Starkville, Mississippi 39759, USA.

Rutgers University, New Brunswick, New Jersey 08901, USA.

C Ellis (C)

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

R Ent (R)

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

D Flay (D)

Temple University, Philadelphia, Pennsylvania 19122, USA.

E Frlez (E)

University of Virginia, Charlottesville, Virginia 22904, USA.

D Gaskell (D)

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

O Geagla (O)

University of Virginia, Charlottesville, Virginia 22904, USA.

J German (J)

North Carolina A&M State University, Greensboro, North Carolina 27411, USA.

R Gilman (R)

Rutgers University, New Brunswick, New Jersey 08901, USA.

T Gogami (T)

Tohoku University, Tohoku, Miyagi Prefecture 980-8577, Japan.

J Gomez (J)

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

Y M Goncharenko (YM)

Kurchatov Institute-IHEP, Protvino, Moskva 123098, Russia.

O Hashimoto (O)

Tohoku University, Tohoku, Miyagi Prefecture 980-8577, Japan.

D Higinbotham (D)

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

T Horn (T)

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

G M Huber (GM)

University of Regina, Regina, Saskatchewan, S4S 0A2, Canada.

M Jones (M)

North Carolina A&M State University, Greensboro, North Carolina 27411, USA.

M K Jones (MK)

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

N Kalantarians (N)

University of Virginia, Charlottesville, Virginia 22904, USA.

Virginia Union University, Richmond, Virginia 23220, USA.

H-K Kang (HK)

Seoul National University, Seoul, South Korea.

D Kawama (D)

Tohoku University, Tohoku, Miyagi Prefecture 980-8577, Japan.

C Keith (C)

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

C Keppel (C)

Hampton University, Hampton, Virginia 23669, USA.

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

M Khandaker (M)

Norfolk State University, Norfolk, Virginia 23504, USA.

Y Kim (Y)

Seoul National University, Seoul, South Korea.

P M King (PM)

Ohio University, Athens, Ohio 45701, USA.

M Kohl (M)

Hampton University, Hampton, Virginia 23669, USA.

K Kovacs (K)

University of Virginia, Charlottesville, Virginia 22904, USA.

V Kubarovsky (V)

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

Rensselaer Polytechnic Institute, Troy, New York 12180, USA.

Y Li (Y)

Hampton University, Hampton, Virginia 23669, USA.

N Liyanage (N)

University of Virginia, Charlottesville, Virginia 22904, USA.

W Luo (W)

Lanzhou University, Lanzhou, Gansu Sheng, China.

D Mack (D)

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

V Mamyan (V)

University of Virginia, Charlottesville, Virginia 22904, USA.

P Markowitz (P)

Florida International University, Miami, Florida 33199, USA.

T Maruta (T)

Tohoku University, Tohoku, Miyagi Prefecture 980-8577, Japan.

D Meekins (D)

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

Y M Melnik (YM)

Kurchatov Institute-IHEP, Protvino, Moskva 123098, Russia.

Z-E Meziani (ZE)

Temple University, Philadelphia, Pennsylvania 19122, USA.

A Mkrtchyan (A)

Yerevan Physics Institute, 0036, Yerevan, Armenia.

H Mkrtchyan (H)

Yerevan Physics Institute, 0036, Yerevan, Armenia.

V V Mochalov (VV)

Kurchatov Institute-IHEP, Protvino, Moskva 123098, Russia.

P Monaghan (P)

Hampton University, Hampton, Virginia 23669, USA.

A Narayan (A)

Mississippi State University, Starkville, Mississippi 39759, USA.

S N Nakamura (SN)

Tohoku University, Tohoku, Miyagi Prefecture 980-8577, Japan.

A Nuruzzaman (A)

Mississippi State University, Starkville, Mississippi 39759, USA.

L Pentchev (L)

William & Mary, Williamsburg, Virginia 23185, USA.

D Pocanic (D)

University of Virginia, Charlottesville, Virginia 22904, USA.

M Posik (M)

Temple University, Philadelphia, Pennsylvania 19122, USA.

A Puckett (A)

University of Connecticut, Storrs, Connecticut 06269, USA.

X Qiu (X)

Hampton University, Hampton, Virginia 23669, USA.

J Reinhold (J)

Florida International University, Miami, Florida 33199, USA.

S Riordan (S)

University of Virginia, Charlottesville, Virginia 22904, USA.

J Roche (J)

Ohio University, Athens, Ohio 45701, USA.

O A Rondón (OA)

University of Virginia, Charlottesville, Virginia 22904, USA.

B Sawatzky (B)

Temple University, Philadelphia, Pennsylvania 19122, USA.

M Shabestari (M)

University of Virginia, Charlottesville, Virginia 22904, USA.

Mississippi State University, Starkville, Mississippi 39759, USA.

K Slifer (K)

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

G Smith (G)

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

L F Soloviev (LF)

Kurchatov Institute-IHEP, Protvino, Moskva 123098, Russia.

P Solvignon (P)

Argonne National Laboratory, Argonne, Illinois 60439, USA.

V Tadevosyan (V)

Yerevan Physics Institute, 0036, Yerevan, Armenia.

L Tang (L)

Hampton University, Hampton, Virginia 23669, USA.

A N Vasiliev (AN)

Kurchatov Institute-IHEP, Protvino, Moskva 123098, Russia.

M Veilleux (M)

Christopher Newport University, Newport News, Virginia 23606, USA.

T Walton (T)

Hampton University, Hampton, Virginia 23669, USA.

F Wesselmann (F)

Xavier University, New Orleans, Louisiana 70125, USA.

S Wood (S)

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

H Yao (H)

Temple University, Philadelphia, Pennsylvania 19122, USA.

Z Ye (Z)

Hampton University, Hampton, Virginia 23669, USA.

J Zhang (J)

University of Virginia, Charlottesville, Virginia 22904, USA.

L Zhu (L)

Hampton University, Hampton, Virginia 23669, USA.

Classifications MeSH