Measurement of hadronic azimuthal distributions in deep inelastic muon proton scattering

Arneodo, M.; Arvidson, Adam Regn; Aubert, J.J.; Badełek, B.; Beaufays, J.; Bee, C. P.; Benchouk, C.; Berghoff, G.; Bird, I.; Blum, D.; Böhm, E.; Bouard, X. De; Brasse, F.W.; Braun, H. M.; Broll, C.; Brown, S.; Brück, H.; Calén, H.; Chima, J. S.; Ciborowski, J.; Clifft, R. W.; Coignet, G.; Combley, F.; Conrad, J. M.; Coughlan, J. A.; D’Agostini, G.; Dahlgren, S.; Dengler, F.; Derado, I.; Dreyer, T.; Drees, J.; Düren, M.; Eckardt, V.; Edwards, A.; Edwards, M.; Ernst, Thomas; Eszes, G.; Favier, Jean; Ferrero, M. I.; Figiel, J.; Flauger, W.; Foster, J. M.; Gabathuler, E.; Gajewski, J.; Gamet, R.; Gayler, J.; Geddes, N. I.; Grafström, P.; Grard, F.; Haas, J.; Hagberg, E.; Hasert, F.J.; Hayman, P.; Heusse, P.; Jaffré, M.; Jachołkowska, A.; Janata, F.; Jancsó, Gábor; Johnson, A.; Kabuß, E.; Kellner, G.; Korbel, V.; Krüger, J.; Kullander, S.; Landgraf, U.; Lanske, D.; Loken, J.; Long, K.; Maire, M.; Malecki, Pa.; Manz, A.; Maselli, S.; Mohr, W.; Montanet, F.; Montgomery, H. E.; Nagy, E.; Nassalski, J.; Norton, P. R.; Oakham, F. G.; Osborne, A.M.; Pascaud, C.; Pavel, N.; Pawlik, B.; Payre, P.; Peroni, C.; Peschel, H.; Pessard, H.; Pettingale, J.; Pietrzyk, U.; Pönsgen, B.; Pötsch, M.; Renton, P.; Ribarics, P.; Rith, Klaus; Rondio, E.; Scheer, M.; Sandacz, A.; Schlagböhmer, A.; Schiemann, H.; Schmitz, N.; Schneegans, M.; Scholz, M.; Schröder, T.; Schultze, K.; Sloan, T.; Stier, H. E.; Studt, M.; Taylor, G. N.; Thénard, J.M.; Thompson, J.C.; Torre, A. de la; Töth, J.; Urbán, L.; Wallucks, W.; Whalley, M. R.; Wheeler, S.; Williams, W. S. C.; Wimpenny, S.; Windmolders, R.; Wolf, G.

doi:10.1016/0370-2693(83)91076-6

Cited by 41 publications

(40 citation statements)

References 18 publications

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“…As first observed by Cahn [270], such a dependence is directly related to the parton intrinsic motion and vanishes when k ⊥ = 0. Indeed, this effect (also known as Cahn effect) has been measured in different SIDIS experiments [92,93,94]. In the TMD approach the available data can be used to extract information on the Gaussian widths entering the PDF's and FF's.…”

Section: Azimuthal Dependence In Unpolarized Sidismentioning

confidence: 98%

“…The values of cos 2φ h , sin φ h as functions of x F were found to be close to zero. Previous results limited to the forward hemisphere were also available [93].…”

Section: Sidis Processesmentioning

confidence: 99%

“…As in Drell-Yan processes, in SIDIS the intrinsic parton motions result in azimuthally dependent terms in the unpolarized and single polarized cross sections for hadron production [270,271,272,93,92].…”

Section: Semi-inclusive Deeply Inelastic Scatteringmentioning

confidence: 99%

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Azimuthal and single spin asymmetries in hard scattering processes

D’Alesio

Murgia

2008

Progress in Particle and Nuclear Physics

181

100

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In this article we review the present understanding of azimuthal and single spin asymmetries for inclusive and semi-inclusive particle production in unpolarized and polarized hadronic collisions at high energy and moderately large transverse momentum. After summarizing the experimental information available, we discuss and compare the main theoretical approaches formulated in the framework of perturbative QCD. We then present in some detail a generalization of the parton model with inclusion of spin and intrinsic transverse momentum effects. In this context, we extensively discuss the phenomenology of azimuthal and single spin asymmetries for several processes in different kinematical configurations. A comparison with the predictions of other approaches, when available, is also given. We finally emphasize some relevant open points and challenges for future theoretical and experimental investigation.

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Section: Azimuthal Dependence In Unpolarized Sidismentioning

confidence: 98%

“…The values of cos 2φ h , sin φ h as functions of x F were found to be close to zero. Previous results limited to the forward hemisphere were also available [93].…”

Section: Sidis Processesmentioning

confidence: 99%

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Azimuthal and single spin asymmetries in hard scattering processes

D’Alesio

Murgia

2008

Progress in Particle and Nuclear Physics

181

100

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“…The azimuthal asymmetries and their spin and/or nuclear dependences of the SIDIS cross sections are directly related to the parton distribution and polarization inside nucleon or nuclei and therefore are the subjects of intense studies both theoretically [1][2][3][4][5][6][7][8][9][10][11][12][13] and experimentally [14][15][16][17][18][19][20][21][22][23][24][25]. They provide us with a glimpse into the dynamics of strong interaction within nucleons or nuclei and a baseline for the study of parton dynamics in other extreme conditions at high temperature and baryon density.…”

mentioning

confidence: 99%

“…We instead focus primarily on the effect of initial and final state interaction. In the large transverse momentum region, the azimuthal asymmetries arise predominately from hard gluon bremsstrahlung that can be calculated using perturbative QCD (pQCD) [1], and are clearly observed in experiments [14][15][16][17][18]. On the other hand, in the small transverse momentum region p h⊥ ∼ k ⊥ ≤ 1GeV/c, the asymmetry was shown [2] to arise mainly from the intrinsic transverse momentum of quarks in nucleon and is a higher twist effect proportional to k ⊥ /Q for cos φ and to k 2 ⊥ /Q 2 for cos 2φ .…”

mentioning

confidence: 99%

Twist-4 contributions to the azimuthal asymmetry in semi-inclusive deeply inelastic scattering

et al. 2011

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We calculate the differential cross section for the unpolarized semi-inclusive deeply inelastic scattering (SIDIS) process e − + N → e − + q + X in leading order (LO) of perturbative QCD and up to twist-4 in power corrections and study in particular the azimuthal asymmetry cos 2φ . The final results are expressed in terms of transverse momentum dependent (TMD) parton matrix elements of the target nucleon up to twist-4. We also apply it to e − + A → e − + q + X and illustrate numerically the nuclear dependence of the azimuthal asymmetry cos 2φ by using a Gaussian ansatz for the TMD parton matrix elements.

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Avakian¹

2017

Light Cone 2015

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Measurement of hadronic azimuthal distributions in deep inelastic muon proton scattering

Cited by 41 publications

References 18 publications

Azimuthal and single spin asymmetries in hard scattering processes

Azimuthal and single spin asymmetries in hard scattering processes

Twist-4 contributions to the azimuthal asymmetry in semi-inclusive deeply inelastic scattering

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