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Systematics of quarkonium production at the LHC and double parton fragmentation

Publication ,  Journal Article
Fleming, S; Leibovich, AK; Mehen, T; Rothstein, IZ
Published in: Physical Review D - Particles, Fields, Gravitation and Cosmology
November 6, 2012

In this paper, we discuss the systematics of quarkonium production at the LHC. In particular, we focus on the necessity to sum logs of the form log(Q/p ≥) and log(p ≥/m Q). We show that the former contributions are power suppressed, while the latter, whose contribution in fragmentation is well known, also arise in the short distance (i.e., nonfragmentation) production mechanisms. Though these contributions are suppressed by powers of m Q/p ≥, they can be enhanced by inverse powers of v, the relative velocity between heavy quarks in the quarkonium. In the limit p ≥m Q, short-distance production can be thought of as the fragmentation of a pair of partons (i.e., the heavy quark and antiquark) into the final state quarkonium. We derive an all-order factorization theorem for this process in terms of double parton fragmentation functions and calculate the one-loop anomalous dimension matrix for the double parton fragmentation functions. © 2012 American Physical Society.

Duke Scholars

Published In

Physical Review D - Particles, Fields, Gravitation and Cosmology

DOI

EISSN

1550-2368

ISSN

1550-7998

Publication Date

November 6, 2012

Volume

86

Issue

9

Related Subject Headings

  • Nuclear & Particles Physics
  • 5107 Particle and high energy physics
  • 5101 Astronomical sciences
  • 4902 Mathematical physics
  • 0206 Quantum Physics
  • 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics
  • 0201 Astronomical and Space Sciences
 

Citation

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MLA
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Fleming, S., Leibovich, A. K., Mehen, T., & Rothstein, I. Z. (2012). Systematics of quarkonium production at the LHC and double parton fragmentation. Physical Review D - Particles, Fields, Gravitation and Cosmology, 86(9). https://doi.org/10.1103/PhysRevD.86.094012
Fleming, S., A. K. Leibovich, T. Mehen, and I. Z. Rothstein. “Systematics of quarkonium production at the LHC and double parton fragmentation.” Physical Review D - Particles, Fields, Gravitation and Cosmology 86, no. 9 (November 6, 2012). https://doi.org/10.1103/PhysRevD.86.094012.
Fleming S, Leibovich AK, Mehen T, Rothstein IZ. Systematics of quarkonium production at the LHC and double parton fragmentation. Physical Review D - Particles, Fields, Gravitation and Cosmology. 2012 Nov 6;86(9).
Fleming, S., et al. “Systematics of quarkonium production at the LHC and double parton fragmentation.” Physical Review D - Particles, Fields, Gravitation and Cosmology, vol. 86, no. 9, Nov. 2012. Scopus, doi:10.1103/PhysRevD.86.094012.
Fleming S, Leibovich AK, Mehen T, Rothstein IZ. Systematics of quarkonium production at the LHC and double parton fragmentation. Physical Review D - Particles, Fields, Gravitation and Cosmology. 2012 Nov 6;86(9).

Published In

Physical Review D - Particles, Fields, Gravitation and Cosmology

DOI

EISSN

1550-2368

ISSN

1550-7998

Publication Date

November 6, 2012

Volume

86

Issue

9

Related Subject Headings

  • Nuclear & Particles Physics
  • 5107 Particle and high energy physics
  • 5101 Astronomical sciences
  • 4902 Mathematical physics
  • 0206 Quantum Physics
  • 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics
  • 0201 Astronomical and Space Sciences