Physics Letters B (Nov 2024)
Measurement of J/ψ and ψ(2S) production in p + p and p + d interactions at 120 GeV
- C.H. Leung,
- K. Nagai,
- K. Nakano,
- D. Nawarathne,
- J. Dove,
- S. Prasad,
- N. Wuerfel,
- C.A. Aidala,
- J. Arrington,
- C. Ayuso,
- C.L. Barker,
- C.N. Brown,
- W.C. Chang,
- A. Chen,
- D.C. Christian,
- B.P. Dannowitz,
- M. Daugherity,
- L. El Fassi,
- D.F. Geesaman,
- R. Gilman,
- Y. Goto,
- R. Guo,
- T.J. Hague,
- R.J. Holt,
- M.F. Hossain,
- D. Isenhower,
- E. Kinney,
- A. Klein,
- D.W. Kleinjan,
- Y. Kudo,
- P.-J. Lin,
- K. Liu,
- M.X. Liu,
- W. Lorenzon,
- R.E. McClellan,
- P.L. McGaughey,
- M.M. Medeiros,
- Y. Miyachi,
- S. Miyasaka,
- D.H. Morton,
- K. Nakahara,
- S. Nara,
- S.F. Pate,
- J.C. Peng,
- A. Pun,
- B.J. Ramson,
- P.E. Reimer,
- J.G. Rubin,
- F. Sanftl,
- S. Sawada,
- T. Sawada,
- M.B.C. Scott,
- T.-A. Shibata,
- A.S. Tadepalli,
- M. Teo,
- R.S. Towell,
- S. Uemura,
- S.G. Wang,
- A.B. Wickes,
- J. Wu,
- Z.H. Ye
Affiliations
- C.H. Leung
- Department of Physics, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA; Corresponding author.
- K. Nagai
- Department of Physics, Tokyo Institute of Technology, Meguro-ku, Tokyo 152-8550, Japan; Institute of Physics, Academia Sinica, Taipei 11529, Taiwan; Physics Division, Los Alamos National Laboratory, Los Alamos, NM 87545, USA
- K. Nakano
- Department of Physics, Tokyo Institute of Technology, Meguro-ku, Tokyo 152-8550, Japan; RIKEN Nishina Center for Accelerator-Based Science, Wako, Saitama 351-0198, Japan; University of Virginia, Charlottesville, VA 22904, USA
- D. Nawarathne
- Department of Physics, New Mexico State University, Las Cruces, NM 88003, USA
- J. Dove
- Department of Physics, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
- S. Prasad
- Department of Physics, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA; Physics Division, Argonne National Laboratory, Lemont, IL 60439, USA
- N. Wuerfel
- Randall Laboratory of Physics, University of Michigan, Ann Arbor, MI 48109, USA
- C.A. Aidala
- Randall Laboratory of Physics, University of Michigan, Ann Arbor, MI 48109, USA; Physics Division, Los Alamos National Laboratory, Los Alamos, NM 87545, USA
- J. Arrington
- Physics Division, Argonne National Laboratory, Lemont, IL 60439, USA
- C. Ayuso
- Randall Laboratory of Physics, University of Michigan, Ann Arbor, MI 48109, USA
- C.L. Barker
- Department of Engineering and Physics, Abilene Christian University, Abilene, TX 79699, USA
- C.N. Brown
- Fermi National Accelerator Laboratory, Batavia, IL 60510, USA
- W.C. Chang
- Institute of Physics, Academia Sinica, Taipei 11529, Taiwan
- A. Chen
- Department of Physics, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA; Institute of Physics, Academia Sinica, Taipei 11529, Taiwan; Randall Laboratory of Physics, University of Michigan, Ann Arbor, MI 48109, USA
- D.C. Christian
- Fermi National Accelerator Laboratory, Batavia, IL 60510, USA
- B.P. Dannowitz
- Department of Physics, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
- M. Daugherity
- Department of Engineering and Physics, Abilene Christian University, Abilene, TX 79699, USA
- L. El Fassi
- Department of Physics and Astronomy, Mississippi State University, Mississippi State, MS 39762, USA; Department of Physics and Astronomy, Rutgers, The State University of New Jersey, Piscataway, NJ 08854, USA
- D.F. Geesaman
- Physics Division, Argonne National Laboratory, Lemont, IL 60439, USA
- R. Gilman
- Department of Physics and Astronomy, Rutgers, The State University of New Jersey, Piscataway, NJ 08854, USA
- Y. Goto
- RIKEN Nishina Center for Accelerator-Based Science, Wako, Saitama 351-0198, Japan
- R. Guo
- Department of Physics, National Kaohsiung Normal University, Kaohsiung City 80201, Taiwan
- T.J. Hague
- Department of Engineering and Physics, Abilene Christian University, Abilene, TX 79699, USA
- R.J. Holt
- Physics Division, Argonne National Laboratory, Lemont, IL 60439, USA
- M.F. Hossain
- Department of Physics, New Mexico State University, Las Cruces, NM 88003, USA
- D. Isenhower
- Department of Engineering and Physics, Abilene Christian University, Abilene, TX 79699, USA
- E. Kinney
- Department of Physics, University of Colorado, Boulder, CO 80309, USA
- A. Klein
- Physics Division, Los Alamos National Laboratory, Los Alamos, NM 87545, USA
- D.W. Kleinjan
- Physics Division, Los Alamos National Laboratory, Los Alamos, NM 87545, USA
- Y. Kudo
- Department of Physics, Yamagata University, Yamagata City, Yamagata 990-8560, Japan
- P.-J. Lin
- Department of Physics, University of Colorado, Boulder, CO 80309, USA; Institute of Physics, Academia Sinica, Taipei 11529, Taiwan
- K. Liu
- Physics Division, Los Alamos National Laboratory, Los Alamos, NM 87545, USA
- M.X. Liu
- Physics Division, Los Alamos National Laboratory, Los Alamos, NM 87545, USA
- W. Lorenzon
- Randall Laboratory of Physics, University of Michigan, Ann Arbor, MI 48109, USA
- R.E. McClellan
- Department of Physics, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
- P.L. McGaughey
- Physics Division, Los Alamos National Laboratory, Los Alamos, NM 87545, USA
- M.M. Medeiros
- Physics Division, Argonne National Laboratory, Lemont, IL 60439, USA
- Y. Miyachi
- Department of Physics, Yamagata University, Yamagata City, Yamagata 990-8560, Japan
- S. Miyasaka
- Department of Physics, Tokyo Institute of Technology, Meguro-ku, Tokyo 152-8550, Japan
- D.H. Morton
- Randall Laboratory of Physics, University of Michigan, Ann Arbor, MI 48109, USA
- K. Nakahara
- Department of Physics, University of Maryland, College Park, MD 20742, USA
- S. Nara
- Department of Physics, Yamagata University, Yamagata City, Yamagata 990-8560, Japan
- S.F. Pate
- Department of Physics, New Mexico State University, Las Cruces, NM 88003, USA
- J.C. Peng
- Department of Physics, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
- A. Pun
- Department of Physics, New Mexico State University, Las Cruces, NM 88003, USA
- B.J. Ramson
- Randall Laboratory of Physics, University of Michigan, Ann Arbor, MI 48109, USA; Fermi National Accelerator Laboratory, Batavia, IL 60510, USA
- P.E. Reimer
- Physics Division, Argonne National Laboratory, Lemont, IL 60439, USA
- J.G. Rubin
- Randall Laboratory of Physics, University of Michigan, Ann Arbor, MI 48109, USA; Physics Division, Argonne National Laboratory, Lemont, IL 60439, USA
- F. Sanftl
- Department of Physics, Tokyo Institute of Technology, Meguro-ku, Tokyo 152-8550, Japan
- S. Sawada
- Institute of Particle and Nuclear Studies, KEK, High Energy Accelerator Research Organization, Tsukuba, Ibaraki 305-0801, Japan
- T. Sawada
- Randall Laboratory of Physics, University of Michigan, Ann Arbor, MI 48109, USA
- M.B.C. Scott
- Randall Laboratory of Physics, University of Michigan, Ann Arbor, MI 48109, USA; Physics Division, Argonne National Laboratory, Lemont, IL 60439, USA
- T.-A. Shibata
- Department of Physics, Tokyo Institute of Technology, Meguro-ku, Tokyo 152-8550, Japan; RIKEN Nishina Center for Accelerator-Based Science, Wako, Saitama 351-0198, Japan
- A.S. Tadepalli
- Department of Physics and Astronomy, Rutgers, The State University of New Jersey, Piscataway, NJ 08854, USA
- M. Teo
- Department of Physics, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
- R.S. Towell
- Department of Engineering and Physics, Abilene Christian University, Abilene, TX 79699, USA
- S. Uemura
- Physics Division, Los Alamos National Laboratory, Los Alamos, NM 87545, USA
- S.G. Wang
- Institute of Physics, Academia Sinica, Taipei 11529, Taiwan; Department of Physics, National Kaohsiung Normal University, Kaohsiung City 80201, Taiwan
- A.B. Wickes
- Physics Division, Los Alamos National Laboratory, Los Alamos, NM 87545, USA
- J. Wu
- Fermi National Accelerator Laboratory, Batavia, IL 60510, USA
- Z.H. Ye
- Physics Division, Argonne National Laboratory, Lemont, IL 60439, USA
- Journal volume & issue
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Vol. 858
p. 139032
Abstract
We report the p+p and p+d differential cross sections measured in the SeaQuest experiment for J/ψ and ψ(2S) production at Image 1 beam energy covering the forward x-Feynman (xF) range of 0.5<xF<0.9. The measured cross sections are in good agreement with theoretical calculations based on the nonrelativistic QCD (NRQCD) using the long-distance matrix elements deduced from a recent global analysis of proton- and pion-induced charmonium production data. The σψ(2S)/σJ/ψ cross section ratios are found to increase as xF increases, indicating that the qq¯ annihilation process has larger contributions in the ψ(2S) production than the J/ψ production. The σpd/2σpp cross section ratios are observed to be significantly different for the Drell-Yan process and J/ψ production, reflecting their different production mechanisms. We find that the σpd/2σpp ratios for J/ψ production at the forward xF region are sensitive to the d¯/u¯ flavor asymmetry of the proton sea, analogous to the Drell-Yan process. The transverse momentum (pT) distributions for J/ψ and ψ(2S) production are also presented and compared with data collected at higher center-of-mass energies.
