Measurements of Nonsinglet Moments of the Nucleon Structure Functions and Comparison to Predictions from Lattice QCD for Q2=4 GeV2

Albayrak, I.; Mamyan, V.; Christy, M. E.; Ahmidouch, A.; Arrington, J.; Asaturyan, A.; Bodek, A.; Bosted, P.; Bradford, R.; Brash, E.; Bruell, A.; Butuceanu, C.; Coleman, S. J.; Commisso, M.; Connell, S. H.; Dalton, M. M.; Danagoulian, S.; Daniel, A.; Day, D. B.; Dhamija, S.; Dunne, J.; Dutta, D.; Ent, R.; Gaskell, D.; Gasparian, A.; Gran, R.; Horn, T.; Huang, Liting; Huber, G. M.; Jayalath, C.; Johnson, M.; Jones, M. K.; Kalantarians, N.; Liyanage, A.; Keppel, C. E.; Kinney, E.; Li, Y.; Malace, S.; Manly, S.; Markowitz, P.; Maxwell, J.; Mbianda, N. N.; McFarland, K. S.; Meziane, M.; Meziani, Z. E.; Mills, G. B.; Mkrtchyan, H.; Mkrtchyan, A.; Mulholland, J.; Nelson, J.; Niculescu, G.; Niculescu, I.; Pentchev, L.; Puckett, A.; Punjabi, V.; Qattan, I. A.; Reimer, P. E.; Reinhold, J.; Rodriguez, V. M.; Rondon-Aramayo, O.; Sakuda, M.; Sakumoto, W. K.; Segbefia, E.; Seva, T.; Sick, I.; Slifer, K.; Smith, G. R.; Steinman, J.; Solvignon, P.; Tadevosyan, V.; Tajima, S.; Tvaskis, V.; Vulcan, W. F.; Walton, T.; Wesselmann, F. R.; Wood, S. A.; Ye, Zhihong

doi:10.1103/PhysRevLett.123.022501

Title: Measurements of Nonsinglet Moments of the Nucleon Structure Functions and Comparison to Predictions from Lattice QCD for $Q^{2} = 4 {GeV}^{2}$

Journal Article · Tue Jul 09 00:00:00 EDT 2019 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.123.022501· OSTI ID:1564094

; Mamyan, V.; Christy, M. E.; Ahmidouch, A.; Arrington, J.; Asaturyan, A.; Bodek, A.; Bosted, P.; Bradford, R.; Brash, E.; Bruell, A.; Butuceanu, C.; Coleman, S. J.; Commisso, M.; Connell, S. H.; Dalton, M. M.; Danagoulian, S.; Daniel, A.; Day, D. B.; Dhamija, S. more »

We present extractions of the nucleon non-singlet moments utilizing new precision data on the deuteron F₂ structure function at large Bjorken-x determined via the Rosenbluth separation technique at Jefferson Lab Experimental Hall C. These new data are combined with a complementary set of data on the proton previously measured in Hall C at similar kinematics and world data sets on the proton and deuteron at lower x measured at SLAC and CERN. The new Jefferson Lab data provide coverage of the upper third of the x range, crucial for precision determination of the higher moments. In contrast to previous extractions, these moments have been corrected for nuclear effects in the deuteron using a new global fit to the deuteron and proton data. The obtained experimental moments represent an order of magnitude improvement in precision over previous extractions using high x data. Furthermore, recent exciting developments in Lattice QCD calculations provide a first ever comparison of these new experimental results with calculations of moments carried out at the physical pion mass, as well as an innovative approach which first calculates the quark distributions directly before determining moments.

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Research Organization:: Argonne National Laboratory (ANL), Argonne, IL (United States); Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States); Mississippi State Univ., Mississippi State, MS (United States); Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States); Univ. of Rochester, NY (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Nuclear Physics (NP); National Science Foundation (NSF)

Contributing Organization:: E06-009 Collaboration

Grant/Contract Number:: AC02-06CH11357; AC02-05CH11231; FG02-96ER40950; AC05-06OR23177; PHY-1002644; PHY-1508272; FG02-07ER41528; SC0008475

OSTI ID:: 1564094

Alternate ID(s):: OSTI ID: 1542289; OSTI ID: 1546496; OSTI ID: 1599200; OSTI ID: 1830330; OSTI ID: 1838673

Journal Information:: Physical Review Letters, Vol. 123, Issue 2; ISSN 0031-9007

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 1 work

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Title: Measurements of Nonsinglet Moments of the Nucleon Structure Functions and Comparison to Predictions from Lattice QCD for Q 2 = 4 GeV 2

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Title: Measurements of Nonsinglet Moments of the Nucleon Structure Functions and Comparison to Predictions from Lattice QCD for $Q^{2} = 4 {GeV}^{2}$