O(alpha_s) Spin-Spin Correlations for Top and Bottom Quark Production in e+ e- Annihilation
NAGIOS: RODERIC FUNCIONANDO

O(alpha_s) Spin-Spin Correlations for Top and Bottom Quark Production in e+ e- Annihilation

DSpace Repository

O(alpha_s) Spin-Spin Correlations for Top and Bottom Quark Production in e+ e- Annihilation

Show simple item record

dc.contributor.author Tung, M.
dc.contributor.author Bernabeu Alberola, José
dc.contributor.author Peñarrocha Gantes, José Antonio
dc.date.accessioned 2015-04-10T06:29:57Z
dc.date.available 2015-04-10T06:29:57Z
dc.date.issued 1998
dc.identifier.uri http://hdl.handle.net/10550/42967
dc.description.abstract We present the full O(alpha_s) longitudinal spin-spin correlations for heavy-quark pair production at e+ e- high-energy colliders in closed analytical form. In such reactions, quark and antiquark have strongly correlated spins, and the longitudinal components are dominant. For the explicit computation of the QCD bremsstrahlung contributions, new phase-space integrals are derived. Explicit numerical estimates are given for t t_bar and b b_bar production. Around the Z-peak, QCD one-loop corrections depolarize the spin-spin asymmetry for bottom quark pairs by approximately -4%. For top pair production, we find at 350GeV a 0.6% increased polarization over a value of 0.4 in the longitudinal correlation. For more than 1 TeV the O(alpha_s) corrections enhance depolarization to -2% in the top-pair case.
dc.language.iso eng
dc.relation.ispartof Physics Letters B, 1998, vol. 418, num. 1-2, p. 181-191
dc.rights.uri info:eu-repo/semantics/openAccess
dc.source Tung, M.; Bernabeu Alberola, José; Peñarrocha Gantes, José Antonio (1998) O(alpha_s) Spin-Spin Correlations for Top and Bottom Quark Production in e+ e- Annihilation Physics Letters B 418 1-2 181 191
dc.subject Física
dc.title O(alpha_s) Spin-Spin Correlations for Top and Bottom Quark Production in e+ e- Annihilation
dc.type info:eu-repo/semantics/article
dc.date.updated 2015-04-10T06:29:57Z
dc.identifier.doi http://dx.doi.org/10.1016/S0370-2693(97)01438-X
dc.identifier.idgrec 069739

View       (172.3Kb)

This item appears in the following Collection(s)

Show simple item record

Search DSpace

Advanced Search

Browse

Statistics