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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
Physical review letters, 07/2019, Volume: 123, Issue: 2Journal Article
We present extractions of the nucleon nonsinglet moments utilizing new precision data on the deuteron F 2 structure function at large Bjorkenx 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 datasets 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. Moreover, 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 a new approach that first calculates the quark distributions directly before determining moments.
