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19922026
most citedFirst Sagittarius A* Event Horizon Telescope Results. I. The Shadow of the Supermassive Black Hole in the Center of the Milky Way

1.9k citations

researchers with a paper here

Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.

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Showing 2004 · hep-phShow all

14 papers · 2 filters

hep-ph2004

Parton intrinsic motion: unpolarized cross sections and the Sivers effect in inclusive particle production

U. D'Alesio, F. Murgia

We present a detailed study, performed in the framework of LO perturbative QCD with the inclusion of spin and k_T effects, of unpolarized cross sections for the Drell-Yan process a…

hep-ph2004

Comments on Cahn and Sivers effects in SIDIS

M. Anselmino, M. Boglione, U. D'Alesio +3

The role of intrinsic in semi-inclusive Deep Inelastic Scattering (SIDIS) processes () is studied within QCD parton model at leading order. The resul…

hep-ph2004★ 1 cited

Can the Collins mechanism explain the large transverse single spin asymmetries observed in p(transv. polarized) p --> pion X?

M. Anselmino, M. Boglione, U. D'Alesio +2

We present a calculation of inclusive polarised and unpolarised cross sections within pQCD and the factorisation scheme, taking into account the parton intrinsic motion, k_T, in di…

hep-ph2004

A general formalism for single and double spin asymmetries in inclusive hadron production

U. D'Alesio, S. Melis, F. Murgia

We present a calculation of single and double spin asymmetries for inclusive hadron production in hadronic collisions. Our approach is based on Leading Order (LO) perturbative QCD…

hep-ph2004★ 3 cited

QCD instantons in high energy diffractive scattering: Instanton model of Pomeron

A. E. Dorokhov, I. O Cherednikov

The role of the QCD vacuum effects in high energy diffractive quark-quark and quark-antiquark scattering is studied with the Instanton Liquid Model. The special attention is given…

hep-ph2004★ 1 cited

The Gluon Sivers Distribution in D production at RHIC

M. Anselmino, M. Boglione, E. Leader +2

The single transverse spin asymmetry in D meson production at RHIC can provide a clean measure of the gluon Sivers distribution function. At intermediate rapidity, D production is…

hep-ph2004

Study of instanton effects in electromagnetic quark form factor at high energy

A. E. Dorokhov, I. O. Cherednikov

The detailed analysis of nonperturbative contributions to the electromagnetic quark form factor is performed within the framework of the instanton liquid model (ILM) of the QCD vac…

hep-ph2004★ 168 cited

Feynman rules for effective Regge action

E. N. Antonov, L. N. Lipatov, E. A. Kuraev +1

Starting from the gauge invariant effective action in the quasi-multi-Regge kinematics (QMRK), we obtain the effective reggeized gluon (R) -- particle (P) vertices of the following…

hep-ph2004★ 393 cited

Single-spin asymmetries: the Trento conventions

Alessandro Bacchetta, Umberto D'Alesio, Markus Diehl +1

During the workshop "Transversity: New Developments in Nucleon Spin Structure" (ECT*, Trento, Italy, 14-18 June 2004), a series of recommendations was put forward by the participan…

hep-ph2004★ 70 cited

Parton intrinsic motion: suppression of the Collins mechanism for transverse single spin asymmetries in p(transv. polarised) p --> pion + X

M. Anselmino, M. Boglione, U. D'Alesio +2

We consider a general formalism to compute inclusive polarised and unpolarised cross sections within pQCD and the factorisation scheme, taking into account parton intrinsic motion…

hep-ph2004★ 142 cited

Parton intrinsic motion in inclusive particle production: unpolarized cross sections, single spin asymmetries and the Sivers effect

Umberto D'Alesio, Francesco Murgia

The relevance of intrinsic (or primordial) transverse momentum of partons in the inclusive production of particles at high energy and moderately large p_T has been known for a long…

hep-ph2004★ 72 cited

Accessing Sivers gluon distribution via transverse single spin asymmetries in p(transv. polarized) p --> D X processes at RHIC

M. Anselmino, M. Boglione, U. D'Alesio +2

The production of D mesons in the scattering of transversely polarized protons off unpolarized protons at RHIC offers a clear opportunity to gain information on the Sivers gluon di…

hep-ph2004★ 6 cited

Glueball production in radiative J/psi, Upsilon decays

M. Melis, F. Murgia, J. Parisi

Using a bound-state model of weakly bound gluons for glueballs made of two gluons and a natural generalization of the perturbative QCD formalism for exclusive hadronic processes, w…

hep-ph2004★ 6 cited

Noncommutative QCD corrections to the gluonic decays of heavy quarkonia

Alberto Devoto, Stefano Di Chiara, Wayne W. Repko

We compute the Noncommutative QCD (NCQCD) contributions to the three gluon decay modes of heavy quarkonia. For triplet quarkonia (ortho-quarkonia), the NCQCD correction to the QCD…