NAGIOS: RODERIC FUNCIONANDO

Complete QED NLO contributions to the reaction e(+)e(-) -> mu(+)mu(-)gamma and their implementation in the event generator PHOKHARA

Repositori DSpace/Manakin

Valencià Castellano

Inici
Investigació
e-prints
22 - Física
Visualitza element

IMPORTANT: Aquest repositori està en una versió antiga des del 3/12/2023. La nova instal.lació está en https://roderic.uv.es/

Complete QED NLO contributions to the reaction e(+)e(-) -> mu(+)mu(-)gamma and their implementation in the event generator PHOKHARA

Mostra el registre parcial de l'element

dc.contributor.author	Campanario Pallás, Francisco
dc.contributor.author	Czyz, Henryk
dc.contributor.author	Gluza, Janusz
dc.contributor.author	Gunia, Michal
dc.contributor.author	Riemann, Tord
dc.contributor.author	Rodrigo García, Germán Vicente
dc.contributor.author	Yundin, Valery
dc.date.accessioned	2015-06-18T11:41:12Z
dc.date.available	2015-06-18T11:41:12Z
dc.date.issued	2014
dc.identifier.citation	Campanario Pallás, Francisco Czyz, Henryk Gluza, Janusz Gunia, Michal Riemann, Tord Rodrigo García, Germán Vicente Yundin, Valery 2014 Complete QED NLO contributions to the reaction e(+)e(-) -> mu(+)mu(-)gamma and their implementation in the event generator PHOKHARA Journal Of High Energy Physics 02 2 114-1 114-27
dc.identifier.uri	http://hdl.handle.net/10550/44447
dc.description.abstract	KLOE and Babar have an observed discrepancy of 2% to 5% in the invariant pion pair production cross section. These measurements are based on approximate NLO mu(+)mu(-)gamma cross section predictions of the Monte Carlo event generator PHOKHARA7.0. In this article, the complete NLO radiative corrections to mu(+)mu(-)gamma production are calculated and implemented in the Monte Carlo event generator PHOKHARA9.0. Numerical reliability is guaranteed by two independent approaches to the real and the virtual corrections. The novel features include the contribution of pentagon diagrams in the virtual corrections, which form a gauge-invariant set when combined with their box diagram partners. They may contribute to certain distributions at the percent level. Also the real emission was complemented with two-photon final state emission contributions not included in the generator PHOKHARA7.0. We demonstrate that the numerical influence reaches, for realistic charge-averaged experimental setups, not more than 0.1% at KLOE and 0.3% at BaBar energies. As a result, we exclude the approximations in earlier versions of PHOKHARA as origin of the observed experimental discrepancy.
dc.language.iso	eng
dc.relation.ispartof	Journal Of High Energy Physics, 2014, vol. 02, num. 2, p. 114-1-114-27
dc.subject	Física
dc.title	Complete QED NLO contributions to the reaction e(+)e(-) -> mu(+)mu(-)gamma and their implementation in the event generator PHOKHARA
dc.type	journal article	es_ES
dc.date.updated	2015-06-18T11:41:12Z
dc.identifier.doi	10.1007/JHEP02(2014)114
dc.identifier.idgrec	099147
dc.rights.accessRights	open access	es_ES