Measurement of associated charm production in neutrino-nucleon interactions

2007-07-25
In the CHORUS experiment, a search for associated charm production has been performed in the sample of 130,000 nu interactions. Four events consistent with associated charm production have been found. In the neutral-current sample, three events with associated charm decay topology have been observed with an estimated background of 0.18 +/- 0.05. The relative rate of the associated charm cross-section in deep inelastic nu interactions, sigma(c (c) over bar nu)/sigma(DIS)(NC) = (3.62(-2.42)(+2.95) (stat) +/- 0.54(syst)) x 10(-3) has been measured. In charged-current nu(mu) interactions, one event has a decay topology which is consistent with associated charm production. Based on one event with the estimated background of 0.18 +/- 0.06, we obtained the upper limit on associated charm production in charged-current interactions at 90% C.L. to be sigma(c (c) over bar mu(-))/sigma(CC) < 9.69 x 10(-4).

Suggestions

Measurement of D-0 production in neutrino charged-current interactions
Kayis-Topaksu, A; et. al. (2002-02-01)
During the years 1994-1997, the emulsion target of the CHORUS detector was exposed to the Wide Band Neutrino Beam from the CERN-SPS. About 170 000 neutrino interactions were successfully located in the emulsion. Improvements in the automatic emulsion scanning systems and application of different criteria allowed the sample of located events to be used for studies of charm production. We present a measurement of the production rate of Do mesons based on a sample of 25 693 located nu(mu) charged-current (CC) ...
Measurement of (anti-) neutrino-nucleon structure functions in chorus experiment
Kama, Sami; Serin, Meltem; Department of Physics (2005)
In this work an analysis of the CHORUS (anti-)neutrino-nucleon scattering data taken on lead--scintillator calorimeter during the 1998 run is presented. The differential cross-sections are measured in the range of Þ0.01
Observation of one event with the characteristics of associated charm production in neutrino charged-current interactions
Kayis-Topaksu, A; et. al. (2002-07-01)
We report on a search for associated charm production in neutrino charged-current interactions in the CHORUS experiment, based on the visual observation of charmed-particle decays. The search differs from those carried out so far in which the production of c (c) over bar has been inferred from measurements of events with two or three nations in the final state, resulting from the decay of charmed hadrons. One event with a double charm-decay topology has been found and a corresponding background of 0.04 even...
Modeling of plosive to vowel transitions
Beköz, Alican; Demirekler, Mübeccel; Department of Electrical and Electronics Engineering (2007)
This thesis presents a study concerning stop consonant to vowel transitions which are modeled making use of acoustic tube model. Characteristics of the stop consonant to vowel transitions are tried to be obtained first. Therefore several transitions including fricative to vowel transitions are examined based on spectral and time related properties. In addition to these studies, x-ray snapshots, lip videos and also experiments including subjects are used to intensify the characterization, from the production...
Study of charged hadron multiplicities in charged-current neutrino-lead interactions in the OPERA detector
Agafonova, N.; et. al. (Springer Science and Business Media LLC, 2018-01-24)
The OPERA experiment was designed to search for nu(mu) -> nu(tau) oscillations in appearance mode through the direct observation of tau neutrinos in the CNGS neutrino beam. In this paper, we report a study of the multiplicity of charged particles produced in charged-current neutrino interactions in lead. We present charged hadron average multiplicities, their dispersion and investigate the KNO scaling in different kinematical regions. The results are presented in detail in the form of tables that can be use...
Citation Formats
A. M. Güler, “Measurement of associated charm production in neutrino-nucleon interactions,” 2007, vol. 110, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/38725.