Results 51 to 60 of about 531,410 (302)

QCD aspects of exclusive B meson decays [PDF]

Prog.Part.Nucl.Phys.51:85-171,2003, 2003
I review recent progress on understanding QCD dynamics involved in exclusive $B$ meson decays. Different frameworks, including light-cone sum rules, QCD factorization, perturbative QCD, soft-collinear effective theory, light-front QCD, are discussed. Results from lattice QCD are quoted for comparison.
arxiv   +1 more source

Decomposition of the QCD String into Dipoles and Unintegrated Gluon Distributions [PDF]

, 2002
We present the perturbative and non-perturbative QCD structure of the dipole-dipole scattering amplitude in momentum space. The perturbative contribution is described by two-gluon exchange and the non-perturbative contribution by the stochastic vacuum ...
A. Di Giacomo, A. Di Giacomo, A. Di Giacomo, A. Donnachie, A. Donnachie, A. Donnachie, A. I. Shoshi, A. Krämer, A. Szczurek, A.H. Mueller, A.H. Mueller, A.I. Shoshi, B. Andersson, B. Andersson, B. Blättel, C. Adloff, E. Laermann, E. Meggiolaro, E.A. Kuraev, E.R. Berger, F. D. Steffen, F.E. Low, F.J. Wegner, G. Altarelli, G. Gustafson, G. Kulzinger, G.P. Lepage, G.S. Bali, G.S. Bali, H. Abramowicz, H. G. Dosch, H. J. Pirner, H. Jung, H.G. Dosch, H.G. Dosch, H.G. Dosch, H.G. Dosch, H.G. Dosch, H.G. Dosch, I.I. Balitsky, I.P. Ivanov, I.Ya. Aref’eva, J. Bartels, J. Breitweg, J. Kwiecinski, J. Nemchik, J.D. Bjorken, J.F. Gunion, J.R. Forshaw, K. Golec-Biernat, K. Golec-Biernat, K.G. Wilson, L. Del Debbio, L. Diosi, L. Frankfurt, L.N. Lipatov, M. Ciafaloni, M. D’Elia, M. Glück, M. Rueter, M. Rueter, M. Rueter, M. Rueter, M. Wirbel, M.A. Kimber, M.G. Ryskin, N.E. Bralic, N.N. Nikolaev, N.N. Nikolaev, N.N. Nikolaev, N.N. Nikolaev, O. Nachtmann, P.M. Fishbane, S. Catani, S. Catani, S. Catani, S. Nussinov, U. D’Alesio, V.N. Gribov, Y.A. Simonov, Y.A. Simonov, Y.L. Dokshitzer   +81 more
core   +2 more sources

On the diffraction in the perturbative QCD [PDF]

Physics Letters B, 1998
9 pages, 1 table ...
openaire   +4 more sources

On-shell methods in perturbative QCD [PDF]

Annals of Physics, 2007
49 pages, 15 figures.
Bern, Zvi, Dixon, Lance J., Kosower, David A.   +2 more
openaire   +5 more sources

Non-perturbative QCD effects in qT spectra of Drell-Yan and Z-boson production [PDF]

Journal of High Energy Physics, 2014
A bstractThe factorization theorems for transverse momentum distributions of dilepton/boson production, recently formulated by Collins and Echevarria-Idilbi-Scimemi in terms of well-defined transverse momentum dependent distributions (TMDs), allows for a
U. D’Alesio, M. G. Echevarria, S. Melis, I. Scimemi   +3 more
semanticscholar   +2 more sources

QCD mesonic screening masses using Gribov quantization

Physics Letters B, 2023
The screening masses of mesons provide a gauge invariant and definite order parameter of chiral symmetry restoration. Different mesonic correlation lengths for flavor non-singlets, at least up to NLO, are well-defined gauge invariant physical quantities ...
Sumit, Najmul Haque, Binoy Krishna Patra   +2 more
doaj  

S-wave resonance contributions to in the perturbative QCD factorization approach [PDF]

, 2017
By employing the perturbative QCD (PQCD) factorization approach, we study the quasi-two-body decays, where the pion pair comes from the S-wave resonance f0(X).
Ai-Jun 爱军 Ma 马, Ya 亚 Li 李, Wen-Fei 文飞 Wang 王, Z. Xiao 肖   +3 more
semanticscholar   +1 more source

Secondary reggeons in perturbative QCD [PDF]

The European Physical Journal C, 2002
6 pages, 2 ...
A. G. Shuvaev, M. G. Ryskin
openaire   +4 more sources

The perturbative QCD gradient flow to three loops [PDF]

, 2016
A bstractThe gradient flow in QCD is treated perturbatively through next-to-next-to-leading order in the strong coupling constant. The evaluation of the relevant momentum and flow-time integrals is described, including various means of validation.
R. Harlander, T. Neumann
semanticscholar   +1 more source

Master integrals for two-loop QCD corrections to quark quasi PDFs

Journal of High Energy Physics, 2020
We compute the master integrals for the two-loop QCD corrections to quark quasi parton distribution functions (PDFs) in the large momentum effective theory (LaMET). With a proper canonical basis, we derive the analytical results for the three families of
Long-Bin Chen, Wei Wang, Ruilin Zhu
doaj   +1 more source