Journal
NUCLEAR PHYSICS B
Volume 876, Issue 2, Pages 339-375Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.nuclphysb.2013.08.021
Keywords
Charm production; Strange quark content of the nucleon; Dimuon charm production; Neutrino interactions
Categories
Funding
- ARC of Australia
- DIISR of Australia
- IN2P3 of France
- CEA of France
- BMBF of Germany
- INFN of Italy
- JINR of Russia
- INR of Russia
- FNSRS of Switzerland
- DOE of USA
- NSF of USA
- Sloan Foundation of USA
- Cottrell Foundation of USA
- VP Research Office of the University of South Carolina
- University of South Carolina
- DOE [DE-FG02-95ER40910]
- Russian Federal grant [02.740.11.5220, MK-432.2013.2]
- JINR grant [13-201-01]
- STFC [ST/J004804/1, ST/M000753/1, ST/K001329/1, ST/K000640/1] Funding Source: UKRI
- Science and Technology Facilities Council [ST/K001329/1 ATLAS, ST/J004804/1] Funding Source: researchfish
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We present our new measurement of the cross-section for charm dimuon production in neutrino iron interactions based upon the full statistics collected by the NOMAD experiment. After background subtraction we observe 15 344 charm dimuon events, providing the largest sample currently available. The analysis exploits the large inclusive charged current sample - about 9 x 10(6) events after all analysis cuts - and the high resolution NOMAD detector to constrain the total systematic uncertainty on the ratio of charm dimuon to inclusive Charged Current (CC) cross-sections to similar to 2%. We also perform a fit to the NOMAD data to extract the charm production parameters and the strange quark sea content of the nucleon within the NLO QCD approximation. We obtain a value of m(c)(m(c)) = 1.159 +/- 0.075 GeV/c(2) for the running mass of the charm quark in the (MS) over bar scheme and a strange quark sea suppression factor of kappa(s) = 0.591 +/- 0.019 at Q(2) = 20 GeV2/c(2). (C) 2013 Elsevier B.V. All rights reserved.
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