We discuss the production of two hadrons in e+e- annihilation within the framework of perturbative QCD. The cross section for this process is calculated to next-to-leading order accuracy with a selection of variables that allows the consideration of events where the two hadrons are detected in the same jet. In this configuration we contemplate the possibility that the hadrons come from a double fragmentation of a single parton. The double-fragmentation functions required to describe the transition of a parton to two hadrons, are also necessary to completely factorize all collinear singularities. We explicitly show that factorization applies to order αs in the case of two-hadron production. © 2003 Elsevier B.V. All rights reserved.
Documento: | Artículo |
Título: | Two hadron production in e+e- annihilation to next-to-leading order accuracy |
Autor: | De Florian, D.; Vanni, L. |
Filiación: | Departamento de Física, Universidad de Buenos Aires, (1428) Pabellon 1 Cd. Universitaria, Capital Federal, Buenos Aires, Argentina |
Palabras clave: | accuracy; analytic method; article; calculation; destruction; dynamics; energy; hadron; mathematical analysis; quantum chemistry; technique |
Año: | 2004 |
Volumen: | 578 |
Número: | 1-2 |
Página de inicio: | 139 |
Página de fin: | 149 |
DOI: | http://dx.doi.org/10.1016/j.physletb.2003.10.047 |
Título revista: | Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics |
Título revista abreviado: | Phys Lett Sect B Nucl Elem Part High-Energy Phys |
ISSN: | 03702693 |
CODEN: | PYLBA |
PDF: | https://bibliotecadigital.exactas.uba.ar/download/paper/paper_03702693_v578_n1-2_p139_DeFlorian.pdf |
Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03702693_v578_n1-2_p139_DeFlorian |