Abstract
During the years 1994-1997, the emulsion target of the CHORUS detector was exposed to the wide-band neutrino beam of the CERN SPS. In total about 100 000 charged-current neutrino interactions were located in the nuclear emulsion target and fully reconstructed. From this sample of events which was based on the data acquired by new automatic scanning systems, 1048 D0 events were selected by a pattern recognition program. They were confirmed as neutral-particle decays through visual inspection. Fragmentation properties of deep-inelastic charm production were measured using these events. Distributions of the D0 momentum, Feynman x (xF), z and tanθout, the transverse angle out of the leptonic plane defined by the muon and the neutrino, are presented. The mean value of z was measured to be 〈z〉=0.63±0.03(stat)±0.01(syst). From fits to the z distribution, values for the Peterson parameter εP=0.108±0.017(stat) ±0.013(syst) and the Collins-Spiller parameter εCS=0.21-0.04+0. 05(stat)±0.04(syst) are found. For the average value of xF we find 〈xF〉=0.38±0.04(stat)±0.03(syst) and for the forward-backward asymmetry A=0.79±0.14(stat)±0.05(syst). The distribution of tanθout was measured with an average value 〈tanθout〉=0.030±0.002.
Original language | English |
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Pages (from-to) | 145-156 |
Number of pages | 12 |
Journal | Physics Letters B |
Volume | 604 |
Issue number | 3-4 |
DOIs | |
State | Published - Dec 23 2004 |
Externally published | Yes |
Funding
We gratefully acknowledge the help and support of the neutrino beam staff and of the numerous technical collaborators who contributed to the detector construction, operation, emulsion pouring, development, and scanning. The experiment was made possible by grants from the Institut Interuniversitaire des Sciences Nucléaires and the Interuniversitair Instituut voor Kernwetenschappen (Belgium), the Israel Science Foundation (grant 328/94) and the Technion Vice President Fund for the Promotion of Research (Israel), CERN (Geneva, Switzerland), the German Bundesministerium für Bildung und Forschung (Germany), the Institute of Theoretical and Experimental Physics (Moscow, Russia), the Istituto Nazionale di Fisica Nucleare (Italy), the Promotion and Mutual Aid Corporation for Private Schools of Japan and Japan Society for the Promotion of Science (Japan), the Korea Research Foundation Grant (KRF-2003-005-C00014) (Republic of Korea), the Foundation for Fundamental Research on Matter FOM and the National Scientific Research Organization NWO (The Netherlands), and the Scientific and Technical Research Council of Turkey (Turkey). We gratefully acknowledge their support.
Funders | Funder number |
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Institut Interuniversitaire des Sciences Nucléaires | |
Institute of Theoretical and Experimental Physics | |
Interuniversitair Instituut voor Kernwetenschappen | |
Korea Research Foundation | KRF-2003-005-C00014 |
National Scientific Research Organization NWO | |
Technion Vice President Fund for the Promotion of Research | |
CERN | |
Japan Society for the Promotion of Science | |
Eidgenössischen Departement für Wirtschaft, Bildung und Forschung | |
Foundation for Fundamental Research on Matter | |
Israel Science Foundation | 328/94 |
Türkiye Bilimsel ve Teknolojik Araştirma Kurumu | |
Promotion and Mutual Aid Corporation for Private Schools of Japan | |
Istituto Nazionale di Fisica Nucleare |