A precision measurement of charm dimuon production in neutrino interactions from the NOMAD experiment

作者：Samoylov O; Petti R^*; Alekhin S; Astier P; Autiero D; Baldisseri A; Baldo Ceolin M; Banner M; Bassompierre G; Benslama K; Besson N; Bird I; Blumenfeld B; Bobisut F; Bouchez J; Boyd S; Bueno A; Bunyatov S; Camilleri L; Cardini A; Cattaneo P W; Cavasinni V; Cervera Villanueva A; Challis R; Chukanov A; Collazuol G; Conforto G; Conta C; Contalbrigo M; Cousins R; Degaudenzi H; De Santo A; Del Prete T; Di Lelia L

来源：Nuclear Physics B, 2013, 876(2): 339-375.

DOI：10.1016/j.nuclphysb.2013.08.021

• Charm production
• Strange quark content of the nucleon
• Dimuon charm production
• Neutrino interactions

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(

• 出版日期2013-11-11
• 单位中国地震局