Angular Dependence of High-<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi>p</mml:mi></mml:mrow><mml:mrow><mml:mi>T</mml:mi></mml:mrow></mml:msub></mml:mrow></mml:math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow><mml:mi>π</mml:mi></mml:mrow><mml:mrow><mml:mn>0</mml:mn></mml:mrow></mml:msup></mml:mrow></mml:math>Production

Owen, David; Abshire, G.; Finocchiaro, G.; Grannis, P. D.; Jöstlein, H.; Kephart, R.; Thun, R.; Bellettini, G.; Braccini, P. L.; Castaldi, R.; Cavasinni, V.; Prete, T. Del; Laurelli, P.; Sanguinetti, G.; Valdata‐Nappi, M.

doi:10.1103/physrevlett.45.89

Cited by 20 publications

(25 citation statements)

References 34 publications

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“…K-factors for each case are shown (some data sets and their corresponding curves are further rescaled for clarity). Data are from [38,[41][42][43][44].…”

Section: B Direct Photon Productionmentioning

confidence: 99%

“…All curves are rescaled by a fixed K-factor, K 2 (some data sets with their corresponding curves are further rescaled for clarity). Data are from [41]. results with a large selection of cross-section data we can extract the (flavor-independent) 0 parameter entering the pion FF (see Eq.…”

Section: Neutral Pion Productionmentioning

confidence: 99%

“…For the Sivers function (see Eqs. (41) and (43)) parameters are given in Eq. (46), with 1= 0:8 GeV=c and r 0:7.…”

Section: A Sivers Effect In P " P ! Xmentioning

confidence: 99%

“…The parametrization MRST01[25] for the unpolarized parton distributions is used; fragmentation function set is KKP-1 (see Section II C 2). For the Sivers function (see Eqs (41). and(43)) parameters are given in Eq.…”

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confidence: 99%

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

2004

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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 time, beginning with Drell-Yan and diphoton processes, and continuing with photon and meson production in hadronic collisions. In view of its renewed interest in the context of polarized processes and single spin asymmetries we perform, in the framework of perturbative QCD with the inclusion of spin and k(perp)-effects, a detailed analysis of several such processes in different kinematical situations. We show that the inclusion of these effects leads, at the level of accuracy reachable in this approach, to an overall satisfactory agreement between theoretical predictions and experimental unpolarized data, thus giving support to the study of spin effects and single spin asymmetries within the same scheme. We present results for transverse single spin asymmetries, generated by the so-called Sivers effect, in inclusive pion and photon production in proton-proton collisions. We compare our results with the available experimental data and with previous results obtained using simplified versions of this approach

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“…K-factors for each case are shown (some data sets and their corresponding curves are further rescaled for clarity). Data are from [38,[41][42][43][44].…”

Section: B Direct Photon Productionmentioning

confidence: 99%

Section: Neutral Pion Productionmentioning

confidence: 99%

“…For the Sivers function (see Eqs. (41) and (43)) parameters are given in Eq. (46), with 1= 0:8 GeV=c and r 0:7.…”

Section: A Sivers Effect In P " P ! Xmentioning

confidence: 99%

mentioning

confidence: 99%

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

2004

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“…II, we compile and examine all existing experimental spectra for 0 [14][15][16][17][18][19][20][21] and AE [21,22] at c.m. energies in the range ffiffi ffi s p ¼ 21:7-23:8 GeV.…”

Section: Introductionmentioning

confidence: 99%

Single inclusive pionpTspectra in proton-proton collisions ats=22.4 GeV: Data versus perturbative QCD calculations

Arleo

d’Enterria

2008

Phys. Rev. D

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We compare the inclusive transverse momentum spectra of single pions above p T = 3 GeV/c measured in proton-proton (p-p) collisions at √ s = 21.7 -23.8 GeV, with next-to-leading order (NLO)perturbative QCD (pQCD) predictions using recent parametrizations of the parton densities and parton-to-pion fragmentation functions. Although the dependence on the theoretical scales is large, the calculations can reproduce the experimental results both in magnitude and shape. Based on the existing data and on a pQCD √ s-rescaling of the measured spectra, we provide a practical parametrization of the baseline p-p pion transverse momentum spectrum to be compared to nucleusnucleus collisions data at √ s NN = 22.4 GeV.

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