Charm meson production in 800 GeV/c proton-emulsion interactions

Kodama, K.; Ushida, N.; Mokhtarani, A.; Paolone, V.; Volk, J.; Wilcox, J.; Yager, P. M.; Edelstein, R. M.; Freyberger, A.; Gibaut, D.; Lipton, R.; Nichols, W. R.; Potter, Douglas M.; Russ, J.; Zhang, Y.; Jang, H. I.; Kim, J. Y.; Kim, T. I.; Lim, I. T.; Pac, M. Y.; Baller, B.; Stefanski, R. J.; Nakazawa, Kimitaka; Tasaka, S.; Chung, K.S.; Chung, S. H.; Kim, D. C.; Park, I. G.; Park, M. S.; Song, J.; Yoon, C. S.; Chikawa, M.; Abe, T.; Fujii, T.; Fujioka, G.; Fujiwara, K.; Fukushima, Hiroshi; Hara, T.; Takahashi, Yoshiki; Taruma, K.; Tsuzuki, Y.; Yokoyama, Chiaki; Chang, S. D.; Cheon, B. G.; Cho, J. H.; Kang, J. S.; Kim, C. O.; Kim, K. Y.; Kim, T. Y.; Lee, J. C.; Lee, S. B.; Lim, G. Y.; Nam, S.; Shin, T.; Sim, K. S.; Woo, Jong-Kwan; Isokane, Y.; Tsuneoka, Y.; Aoki, S.; Gauthier, A.; Hoshino, K.; Kitamura, Hirokazu; Kobayashi, M.; Miyanishi, M.; Nakamura, K.; Nakamura, Mitsuhiro; Nakamura, Yuya; Nakanishi, S.; Niu, K.; Niwa, K.; Tajima, H.; Dunlea, J.; Frederiksen, S. G.; Kuramata, S.; Lundberg, B.; Oleynik, G.; Reay, N. W.; Reibel, K.; Sidwell, R. A.; Stanton, N. R.; Moriyama, K.; Shibata, Hiroyuki; Kalbfleisch, G.; Skubic, P.; Snow, J.; Willis, S.; Yuan, W. Y.; Kusumoto, O.; Okusawa, T.; Teranaka, M.; Tominaga, T.; Watanabe, Toru; Yamato, J.; Okabe, H.; Yokota, J.; Adachi, Minoru; Kazuno, M.; Minakawa, F.; Niu, E.; Shibuya, H.; Watanabe, Shuji; Fukuda, O.; Sato, Yoshihiro; Tezuka, I.; Bahk, S. Y.; Kim, S. K.

doi:10.1016/0370-2693(91)90506-l

Cited by 75 publications

(32 citation statements)

References 22 publications

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“…5.2). The value n = 7.7 ± 1.4 is taken from the average of E743 and E653 [6,7], and x b is assumed to be 0.062 ± 0.013 as measured by the E791 experiment [26]. The influence of the parameter uncertainties and other possible parameterisations of Eqs.…”

Section: Efficiency Determinationmentioning

confidence: 99%

“…Perturbative QCD is expected to work well for the large mass top quark production and less well for the lower mass b and c quarks [1,2,3]. At present, several published results of measurements of charm production in proton-nucleus collisions [4,5,6,7,8,9] are available. They are mainly restricted to beam energies between 200 GeV and 800 GeV and mostly have low statistics.…”

Section: Introductionmentioning

confidence: 99%

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Measurement of D0, D+, Ds + and D*+ production in fixed target 920 GeV proton–nucleus collisions

Abt¹,

Adams²,

Agari³

et al. 2007

Eur. Phys. J. C

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Abstract. The inclusive production cross sections of the charmed mesons D 0 , D + , D + s and D * + have been measured in interactions of 920 GeV protons on C, Ti, and W targets with the HERA-B detector at the HERA storage ring. Differential cross sections as a function of transverse momentum and Feynman's x variable are given for the central rapidity region and for transverse momenta up to pT = 3.5 GeV/c. The atomic mass number dependence and the leading to non-leading particle production asymmetries are presented as well.

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Section: Efficiency Determinationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Measurement of D0, D+, Ds + and D*+ production in fixed target 920 GeV proton–nucleus collisions

Abt¹,

Adams²,

Agari³

et al. 2007

Eur. Phys. J. C

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show abstract

“…gluon distribution given by the NLO "physical gluon" MRST2004 parameterization [29]. The accelerator data [30] and the color transparency (long dashed curves) calculation are also presented. We have that the current data at high energies are well described using the color dipole picture and that for the energy range of the data the color transparency and CGC prediction are almost identical.…”

Section: Jhep00(2007)000mentioning

confidence: 99%

Saturation physics in ultra high energy cosmic rays: heavy quark production

Gonçalves

Machado

2007

J. High Energy Phys.

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In this work we estimate the heavy quark production in the interaction of ultra high energy cosmic rays in the atmosphere, considering that the primary cosmic ray is a proton or a photon. At these energies the saturation momentum Q 2 sat (x) stays above the hard scale µ 2 c = 4m 2 c , implying charm production probing the saturation regime. In particular, we show that the ep HERA data presents a scaling on τ c ≡ (Q 2 + µ 2 c )/Q 2 sat (x). We derive our results considering the dipole picture and the Color Glass Condensate formalism, which one shows to be able to describe the heavy quark production in γp and pp collisions. Nuclear effects are considered for the scattering of primaries with the air nuclei and we provide a parametrization for the charm and bottom differential cross sections, dσ/dx F , which can be used as an input for numerical implementations for lepton flux. Implications on the flux of prompt leptons at the Earth are analyzed and a large suppression is predicted.

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“…First, we fix the absolute rate of charm production in 800 GeV proton-nucleon using inclusively produced D 0 cross sections from Ref. [13][16][22] [23]. The value of the D 0 cross section from [22] was scaled from 920 GeV to 800 GeV, a factor of 0.84, using Pythia with CTEQ6L structure functions before averaging [23].…”

Section: Acknowledgmentsmentioning

confidence: 99%

“…µb/nucl µb/nucl µb/nucl [13] p/800 37 ± 9 ± 12 43 ± 3 ± 14 NA [16] p/800 26 ± 4 ± 7 22 ± 8 ± 6 NA [22] p/920 29.9 ± 4.5 ± 5.7 56.3 ± 8.5 ± 9.5 NA [17] p/250 3.3 ± 0.4 ± 0.4 6.0 ± 1.4 ± 0.5 1.5 ± 1.5 [15] π/230 3.2 ± 0.2 ± 0.7 6.6 ± 0.3 ± 1.0 2.7 ± 0.2 [17] π/250 3.6 ± 0.2 ± 0.3 8.7 ± 0.7 ± 0.6 2.0 ± 0.5 [17] K/250 3.0 ± 0.4 7.2 ± 1.1 3.0 ± 0.9 [17] p/250 3.2 ± 0.5 5.4 ± 1.4 1.5 ± 1.5 [18] π/350 3.2 ± 0.1 ± 0.3 7.8 ± 0.14 ± 0.5 1.3 ± 0.4 Avg.…”

Section: Acknowledgmentsmentioning

confidence: 99%

Final tau-neutrino results from the DONuT experiment

Kodama¹,

Ushida²,

et al. 2008

Self Cite

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The DONuT experiment collected data in 1997 and published first results in 2000 based on four observed ντ charged-current (CC) interactions. The final analysis of the data collected in the experiment is presented in this paper, based on 3.6 × 10 17 protons on target using the 800 GeV Tevatron beam at Fermilab. The number of observed ντ CC interactions is 9, from a total of 578 observed neutrino interactions. We calculated the energy-independent part of the tau-neutrino CC cross section (ν +ν), relative to the well-known νe and νµ cross sections. The ratio σ(ντ )/σ(νe,µ) was found to be 1.37±0.35±0.77. The ντ CC cross section was found to be 0.72±0.24±0.36×10 −38 cm 2 GeV −1 . Both results are in agreement with expectations from the Standard Model.

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Charm meson production in 800 GeV/c proton-emulsion interactions

Cited by 75 publications

References 22 publications

Measurement of D0, D+, Ds + and D*+ production in fixed target 920 GeV proton–nucleus collisions

Measurement of D0, D+, Ds + and D*+ production in fixed target 920 GeV proton–nucleus collisions

Saturation physics in ultra high energy cosmic rays: heavy quark production

Final tau-neutrino results from the DONuT experiment

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