Recent Developments in Heavy Quark and Quarkonium Production
Abstract
Recent measurements of J/{psi} production in e{sup +}e{sup -} colliders pose a challenge to the NRQCD factorization theorem for quarkonium production. Discrepancies between leading order calculations of color-octet contributions and the momentum distribution of J/{psi} observed by Belle and BaBar are resolved by resumming large perturbative and nonperturbative corrections that are enhanced near the kinematic endpoint. The large cross sections for J/{psi} + c + {bar c} and double quarkonium production remain poorly understood. Nonperturbative effects in fixed-target hadroproduction of open charm are also discussed. Large asymmetries in the production of charm mesons and baryons probe nonperturbative corrections to the QCD factorization theorem. A power correction called heavy-quark recombination can economically explain these asymmetries with a few universal parameters.
- Authors:
- Publication Date:
- Research Org.:
- Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
- Sponsoring Org.:
- USDOE; USDOE Office of Energy Research (ER) (US)
- OSTI Identifier:
- 836843
- Report Number(s):
- JLAB-THY-03-222; DOE/ER/40150-3142; hep-ph/0312239
TRN: US0500814
- DOE Contract Number:
- AC05-84ER40150
- Resource Type:
- Conference
- Resource Relation:
- Conference: 23rd International Symposium on Multiparticle Dynamics (ISMD 2003), Cracow (PL), 09/05/2003--09/11/2003; Other Information: PBD: 1 Jan 2004
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; BARYONS; CROSS SECTIONS; DISTRIBUTION; FACTORIZATION; MESONS; PROBES; PRODUCTION; QUANTUM CHROMODYNAMICS; QUARKONIUM; QUARKS; RECOMBINATION
Citation Formats
Mehen, Thomas. Recent Developments in Heavy Quark and Quarkonium Production. United States: N. p., 2004.
Web.
Mehen, Thomas. Recent Developments in Heavy Quark and Quarkonium Production. United States.
Mehen, Thomas. 2004.
"Recent Developments in Heavy Quark and Quarkonium Production". United States. https://www.osti.gov/servlets/purl/836843.
@article{osti_836843,
title = {Recent Developments in Heavy Quark and Quarkonium Production},
author = {Mehen, Thomas},
abstractNote = {Recent measurements of J/{psi} production in e{sup +}e{sup -} colliders pose a challenge to the NRQCD factorization theorem for quarkonium production. Discrepancies between leading order calculations of color-octet contributions and the momentum distribution of J/{psi} observed by Belle and BaBar are resolved by resumming large perturbative and nonperturbative corrections that are enhanced near the kinematic endpoint. The large cross sections for J/{psi} + c + {bar c} and double quarkonium production remain poorly understood. Nonperturbative effects in fixed-target hadroproduction of open charm are also discussed. Large asymmetries in the production of charm mesons and baryons probe nonperturbative corrections to the QCD factorization theorem. A power correction called heavy-quark recombination can economically explain these asymmetries with a few universal parameters.},
doi = {},
url = {https://www.osti.gov/biblio/836843},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Thu Jan 01 00:00:00 EST 2004},
month = {Thu Jan 01 00:00:00 EST 2004}
}