Nuclear dependence of charm production

A. Blanco-Covarrubias; J. Engelfried; U. Akgun; G. Alkhazov; J. Amaro-Reyes; A. G. Atamantchouk; A. S. Ayan; M. Y. Balatz; N. F. Bondar; P. S. Cooper; L. J. Dauwe; G. V. Davidenko; U. Dersch; A. G. Dolgolenko; G. B. Dzyubenko; R. Edelstein; L. Emediato; A. M. F. Endler; I. Eschrich; C. O. Escobar; N. Estrada; A. V. Evdokimov; I. S. Filimonov; A. Flores-Castillo; F. G. Garcia; V. L. Golovtsov; P. Gouffon; E. Gülmez; M. Iori; S. Y. Jun; M. Kaya; J. Kilmer; V. T. Kim; L. M. Kochenda; I. Konorov; A. P. Kozhevnikov; A. G. Krivshich; H. Krüger; M. A. Kubantsev; V. P. Kubarovsky; A. I. Kulyavtsev; N. P. Kuropatkin; V. F. Kurshetsov; A. Kushnirenko; J. Lach; L. G. Landsberg; I. Larin; E. M. Leikin; G. López-Hinojosa; T. Lungov; V. P. Maleev; D. Mao; P. Mathew; M. Mattson; V. Matveev; E. McCliment; M. A. Moinester; V. V. Molchanov; A. Morelos; A. V. Nemitkin; P. V. Neoustroev; C. Newsom; A. P. Nilov; S. B. Nurushev; A. Ocherashvili; Y. Onel; S. Ozkorucuklu; A. Penzo; S. V. Petrenko; M. Procario; V. A. Prutskoi; B. V. Razmyslovich; V. I. Rud; J. Russ; J. L. Sánchez-López; J. Simon; A. I. Sitnikov; V. J. Smith; M. Srivastava; V. Steiner; V. Stepanov; L. Stutte; M. Svoiski; N. K. Terentyev; I. Torres; L. N. Uvarov; A. N. Vasiliev; D. V. Vavilov; E. Vázquez-Jáuregui; V. S. Verebryusov; V. A. Victorov; V. E. Vishnyakov; A. A. Vorobyov; K. Vorwalter; J. You; R. Zukanovich-Funchal

doi:10.1140/epjc/s10052-009-1174-0

2023 Impact factor 4.2

Particles and Fields

Open Access

Eur. Phys. J. C (2009) 64: 637-644
https://doi.org/10.1140/epjc/s10052-009-1174-0

Regular Article - Experimental Physics

Nuclear dependence of charm production

The SELEX Collaboration
A. Blanco-Covarrubias¹¹, J. Engelfried¹¹^*, U. Akgun¹³, G. Alkhazov⁹, J. Amaro-Reyes¹¹, A. G. Atamantchouk⁹, A. S. Ayan¹³, M. Y. Balatz⁶, N. F. Bondar⁹, P. S. Cooper⁴, L. J. Dauwe¹⁴, G. V. Davidenko⁶, U. Dersch⁷, A. G. Dolgolenko⁶, G. B. Dzyubenko⁶, R. Edelstein², L. Emediato¹⁶, A. M. F. Endler³, I. Eschrich⁷, C. O. Escobar¹⁶, N. Estrada¹¹, A. V. Evdokimov⁶, I. S. Filimonov⁸, A. Flores-Castillo¹¹, F. G. Garcia¹⁶^,4, V. L. Golovtsov⁹, P. Gouffon¹⁶, E. Gülmez¹, M. Iori¹⁵, S. Y. Jun², M. Kaya¹³, J. Kilmer⁴, V. T. Kim⁹, L. M. Kochenda⁹, I. Konorov⁷, A. P. Kozhevnikov⁵, A. G. Krivshich⁹, H. Krüger⁷, M. A. Kubantsev⁶, V. P. Kubarovsky⁵, A. I. Kulyavtsev²^,4, N. P. Kuropatkin⁴^,9, V. F. Kurshetsov⁵, A. Kushnirenko²^,5, J. Lach⁴, L. G. Landsberg⁵, I. Larin⁶, E. M. Leikin⁸, G. López-Hinojosa¹¹, T. Lungov¹⁶, V. P. Maleev⁹, D. Mao², P. Mathew², M. Mattson², V. Matveev⁶, E. McCliment¹³, M. A. Moinester¹⁰, V. V. Molchanov⁵, A. Morelos¹¹, A. V. Nemitkin⁸, P. V. Neoustroev⁹, C. Newsom¹³, A. P. Nilov⁶, S. B. Nurushev⁵, A. Ocherashvili¹⁰, Y. Onel¹³, S. Ozkorucuklu¹³, A. Penzo¹⁷, S. V. Petrenko⁵, M. Procario², V. A. Prutskoi⁶, B. V. Razmyslovich⁹, V. I. Rud⁸, J. Russ², J. L. Sánchez-López¹¹, J. Simon⁷, A. I. Sitnikov⁶, V. J. Smith¹², M. Srivastava¹⁶, V. Steiner¹⁰, V. Stepanov⁹, L. Stutte⁴, M. Svoiski⁹, N. K. Terentyev²^,9, I. Torres¹¹, L. N. Uvarov⁹, A. N. Vasiliev⁵, D. V. Vavilov⁵, E. Vázquez-Jáuregui¹¹, V. S. Verebryusov⁶, V. A. Victorov⁵, V. E. Vishnyakov⁶, A. A. Vorobyov⁹, K. Vorwalter⁷, J. You²^,4 and R. Zukanovich-Funchal¹⁶

¹ Bogazici University, 80815, Bebek, Istanbul, Turkey
² Carnegie-Mellon University, Pittsburgh, PA, 15213, USA
³ Centro Brasileiro de Pesquisas Físicas, Rio de Janeiro, Brazil
⁴ Fermi National Accelerator Laboratory, Batavia, IL, 60510, USA
⁵ Institute for High Energy Physics, Protvino, Russia
⁶ Institute of Theoretical and Experimental Physics, Moscow, Russia
⁷ Max-Planck-Institut für Kernphysik, 69117, Heidelberg, Germany
⁸ Moscow State University, Moscow, Russia
⁹ Petersburg Nuclear Physics Institute, St. Petersburg, Russia
¹⁰ Tel Aviv University, 69978, Ramat Aviv, Israel
¹¹ Instituto de Fisica, Universidad Autónoma de San Luis Potosí, Manuel Nova #6, Zona Universitaria, San Luis Potosí, 78246, Mexico
¹² University of Bristol, Bristol, BS8 1TL, UK
¹³ University of Iowa, Iowa City, IA, 52242, USA
¹⁴ University of Michigan-Flint, Flint, MI, 48502, USA
¹⁵ University of Rome “La Sapienza” and INFN, Rome, Italy
¹⁶ University of São Paulo, São Paulo, Brazil
¹⁷ University of Trieste and INFN, Trieste, Italy

^* e-mail: jurgen@ifisica.uaslp.mx

Received: 22 July 2009
Revised: 30 September 2009
Published online: 20 October 2009

Abstract

Using data taken by SELEX during the 1996–1997 fixed target run at Fermilab, we study the production of charmed hadrons on copper and carbon targets with Σ ⁻, p, π ⁻, and π ⁺ beams. Parametrizing the dependence of the inclusive production cross section on the atomic number A as A ^α, we determine α for D ⁺, D ⁰, D _s ⁺ , D ⁺(2010), Λ _c ⁺ , and their respective anti-particles, as a function of their transverse momentum p _t and scaled longitudinal momentum x _F. Within our statistics there is no dependence of α on x _F for any charm species for the interval 0.1<x _F<1.0. The average value of α for charm production by pion beams is α _meson=0.850±0.028. This is somewhat larger than the corresponding average α _baryon=0.755±0.016 for charm production by baryon beams (Σ ⁻, p).