Cargando…
$J/\psi + \gamma$ production at the CERN LHC
The associated production of J\psi + gamma at the LHC is studied within the NRQCD framework. It is shown that even for very large values of transverse momentum (p_T of the order of 50 GeV) the dominant contribution to this process is not fragmentation. This is because of the fact that fragmentation-...
| Autores principales: | , , |
|---|---|
| Lenguaje: | eng |
| Publicado: |
1999
|
| Materias: | |
| Acceso en línea: | https://dx.doi.org/10.1103/PhysRevD.60.014009 http://cds.cern.ch/record/376376 |
| _version_ | 1780893264854908928 |
|---|---|
| author | Mathews, P Sridhar, K Basu, R |
| author_facet | Mathews, P Sridhar, K Basu, R |
| author_sort | Mathews, P |
| collection | CERN |
| description | The associated production of J\psi + gamma at the LHC is studied within the NRQCD framework. It is shown that even for very large values of transverse momentum (p_T of the order of 50 GeV) the dominant contribution to this process is not fragmentation. This is because of the fact that fragmentation-type contributions to the cross-section come from only a q q(bar) initial state, which is suppressed at the LHC. We identify gg-initiated diagrams higher-order in alpha_s which do have fragmentation-type vertices. We find, however, that the contribution of these diagrams is negligibly small. |
| id | cern-376376 |
| institution | Organización Europea para la Investigación Nuclear |
| language | eng |
| publishDate | 1999 |
| record_format | invenio |
| spelling | cern-3763762019-09-30T06:29:59Zdoi:10.1103/PhysRevD.60.014009http://cds.cern.ch/record/376376engMathews, PSridhar, KBasu, R$J/\psi + \gamma$ production at the CERN LHCParticle Physics - PhenomenologyThe associated production of J\psi + gamma at the LHC is studied within the NRQCD framework. It is shown that even for very large values of transverse momentum (p_T of the order of 50 GeV) the dominant contribution to this process is not fragmentation. This is because of the fact that fragmentation-type contributions to the cross-section come from only a q q(bar) initial state, which is suppressed at the LHC. We identify gg-initiated diagrams higher-order in alpha_s which do have fragmentation-type vertices. We find, however, that the contribution of these diagrams is negligibly small.hep-ph/9901276IMSC-99-01-03TIFR-TH-99-01oai:cds.cern.ch:3763761999-01-13 |
| spellingShingle | Particle Physics - Phenomenology Mathews, P Sridhar, K Basu, R $J/\psi + \gamma$ production at the CERN LHC |
| title | $J/\psi + \gamma$ production at the CERN LHC |
| title_full | $J/\psi + \gamma$ production at the CERN LHC |
| title_fullStr | $J/\psi + \gamma$ production at the CERN LHC |
| title_full_unstemmed | $J/\psi + \gamma$ production at the CERN LHC |
| title_short | $J/\psi + \gamma$ production at the CERN LHC |
| title_sort | $j/\psi + \gamma$ production at the cern lhc |
| topic | Particle Physics - Phenomenology |
| url | https://dx.doi.org/10.1103/PhysRevD.60.014009 http://cds.cern.ch/record/376376 |
| work_keys_str_mv | AT mathewsp jpsigammaproductionatthecernlhc AT sridhark jpsigammaproductionatthecernlhc AT basur jpsigammaproductionatthecernlhc |