TY - JOUR
T1 - Power corrections and renormalons in Drell-Yan production
AU - Beneke, M.
AU - Braun, V. M.
PY - 1995/11/6
Y1 - 1995/11/6
N2 - The resummed Drell-Yan cross section in the double-logarithmic approximation suffers from infrared renormalons. Their presence was interpreted as an indication for non-perturbative corrections of order ΛQCD/(Q(1 - z)). We find that, once soft gluon emission is accurately taken into account, the leading renormalon divergence is cancelled by higher-order perturbative contributions in the exponent of the resummed cross section. From this evidence, "higher twist" corrections to the hard cross section in Drell-Yan production should intervene only at order Λ2QCD/(Q2(1 - z)2) in the entire perturbative domain Q(1 - z) > ΛQCD. We compare this result with hadronic event shape variables, comment on the potential universality of non-perturbative corrections to resummed cross sections, and on possible implications for phenomenology.
AB - The resummed Drell-Yan cross section in the double-logarithmic approximation suffers from infrared renormalons. Their presence was interpreted as an indication for non-perturbative corrections of order ΛQCD/(Q(1 - z)). We find that, once soft gluon emission is accurately taken into account, the leading renormalon divergence is cancelled by higher-order perturbative contributions in the exponent of the resummed cross section. From this evidence, "higher twist" corrections to the hard cross section in Drell-Yan production should intervene only at order Λ2QCD/(Q2(1 - z)2) in the entire perturbative domain Q(1 - z) > ΛQCD. We compare this result with hadronic event shape variables, comment on the potential universality of non-perturbative corrections to resummed cross sections, and on possible implications for phenomenology.
UR - http://www.scopus.com/inward/record.url?scp=0001190286&partnerID=8YFLogxK
U2 - 10.1016/0550-3213(95)00439-Y
DO - 10.1016/0550-3213(95)00439-Y
M3 - Article
AN - SCOPUS:0001190286
SN - 0550-3213
VL - 454
SP - 253
EP - 290
JO - Nuclear Physics, Section B
JF - Nuclear Physics, Section B
IS - 1-2
ER -