Isolated Photon Cross Section in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi mathvariant="italic">p</mml:mi><mml:mrow><mml:mrow><mml:mover><mml:mrow><mml:mi>p</mml:mi></mml:mrow><mml:mrow><mml:mi>¯</mml:mi></mml:mrow></mml:mover></mml:mrow></mml:mrow></mml:math>Collisions at<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>√</mml:mi><mml:mi mathvariant="italic">s</mml:mi><mml:mspace /><mml:mo>=</mml:mo><mml:mspace /><mml:mn>1.8</mml:mn><m

Abbott, B.; Abolins, M.; Abramov, V.; Acharya, B. S.; Adams, T.; Adams, M. R.; Ahn, Shihyun; Akimov, V.; Alves, G. A.; Amos, N.; Anderson, E. W.; Baarmand, M. M.; Babintsev, V.; Babukhadia, L.; Baden, A.; Baldin, B.; Banerjee, S.; Bantly, J.; Barberis, E.; Baringer, P.; Bartlett, J. F.; Bassler, U.; Belyaev, A.; Beri, S. B.; Bernardi, G.; Bertram, I.; Bezzubov, V. A.; Bhat, P. C.; Bhatnagar, V.; Bhattacharjee, M.; Blazey, G.; Blessing, S.; Boehnlein, A.; Bojko, N. I.; Borcherding, F.; Brandt, A.; Breedon, R.; Briskin, G.; Brock, R.; Brooijmans, G.; Bross, A.; Buchholz, D.; Buescher, V.; Буртовой, В. С.; Butler, J. M.; Carvalho, W.; Casey, D.; Casilum, Z.; Castilla‐Valdez, H.; Chakraborty, D.; Chan, K. M.; Chekulaev, S. V.; Chen, W.; Cho, D. K.; Choi, S.; Chopra, S.; Choudhary, B. C.; Christenson, J. H.; Chung, M.; Claes, D. R.; Clark, A. R.; Cobau, W. G.; Cochran, J.; Coney, L.; Connolly, B.; Cooper, W. E.; Coppage, D.; Cullen-Vidal, D.; Cummings, M. A.C.; Ćutts, D.; Dahl, O. I.; Davis, K.; De, K.; Signore, K. Del; Demarteau, M.; Denisov, D.; Denisov, S. P.; Diehl, H. T.; Diesburg, M.; Loreto, G. Di; Draper, P.; Ducros, Y.; Dudko, L.; Dugad, S.; Dyshkant, A.; Edmunds, D.; Ellison, J.; Elvira, V. D.; Engelmann, R.; Eno, S. C.; Eppley, G.; Ermolov, P.; Eroshin, O. V.; Estrada, J.; Evans, H.; Евдокимов, В. Н.; Fahland, T.; Fehér, S.; Fein, D.; Ferbel, T.; Fisk, H. E.; Fisyak, Y.; Flattum, E.; Fleuret, F.; Fortner, M.; Frame, K. C.; Fuess, S.; Gallas, E. J.; Galyaev, A. N.; Gartung, P.; Gavrilov, V.; Genik, R. J.; Genser, K.; Gerber, C. E.; Gershtein, Y.; Gibbard, B.; Gilmartin, R.; Ginther, G.; Gobbi, B.; Gómez, B.; Gómez, G.; Goncharov, P. I.; Solís, J. L. González; Gordon, H. A.; Goss, L. T.; Gounder, K.; Goussiou, A. G.; Graf, N.; Grannis, P. D.; Green, D. R.; Green, J. A.; Greenlee, H.; Grinstein, S.; Grudberg, P.; Grünendahl, S.; Guglielmo, G.; Gupta, A.; Gurzhiev, S. N.; Gutiérrez, G.; Gutiérrez, P.; Hadley, N. J.; Haggerty, H.; Hagopian, S.; Hagopian, V.; Hahn, K. S.; Hall, R. E.; Hanlet, P.; Hansen, S.; Hauptman, J. M.; Hays, C. P.; Hébert, C.; Hedin, D.; Heinson, A. P.; Heintz, U.; Heuring, T.; Hirosky, R.; Hobbs, J.; Hoeneisen, B.; Hoftun, J. S.; Hsieh, F.; Ito, A. S.; Jerger, S. A.; Jesik, R.; Joffe–Minor, T.; Johns, K. A.; Johnson, Mark D.; Jonckheere, A.; Jones, M.; Jöstlein, H.; Jun, S. Y.; Kahn, S.; Kajfasz, E.; Karmanov, D.; Karmgard, D. J.; Kehoe, R.; Kim, S. K.; Klima, B.; Klopfenstein, C.; Knuteson, B.; Ko, W.; Kohli, J. M.; Koltick, D.; Kostritskiy, A. V.; Kotcher, J.; Kotwal, A.; Kozelov, A. V.; Kozlovsky, E. A.; Krane, J.; Krishnaswamy, M. R.; Krzywdziński, S.; Kubantsev, M.; Kuleshov, S.; Kulik, Y.; Kunori, S.; Landsberg, G.; Leflat, A.; Lehner, F.; Li, J.; Li, Q. Z.; Lima, J. G.R.; Lincoln, D.; Linn, S.; Linnemann, J.; Lipton, R.; Lu, J.; Lucotte, A.; Lueking, L.; Lundstedt, C.; Maciel, A. K.A.; Madaras, R. J.; Manankov, V.; Mani, S.; Mao, H. S.; Markeloff, R.; Marshall, T.; Martin, M.; Martin, R.; Mauritz, K. M.; May, B.; Mayorov, A. A.; McCarthy, R. L.; McDonald, John; McKibben, T.; McMahon, T. J.; Melanson, H. L.; Merkin, M.; Merritt, K. W.; Miao, C.; Miettinen, H.; Mincer, A. I.; Mishra, C. S.; Mokhov, N.; Mondal, N. K.; Montgomery, H. E.; Mostafa, M.; Motta, H. da; Nagy, E.; Nang, F.; Narain, M.; Narasimham, V. S.; Neal, H. A.; Negret, J. P.; Negroni, S.; Norman, D.; Oesch, L.; Oguri, V.; Olivier, B.; Oshima, N.; Owen, D.; Padley, P.; Para, A.; Parashar, N.; Partridge, R.; Parua, N.; Paterno, M.; Patwa, A.; Pawlik, B.; Perkins, J.; Peters, Michael; Piegaia, R.; Piekarz, H.; Pischalnikov, Y.; Pope, B. G.; Popkov, E.; Prosper, H.; Protopopescu, S.; Qian, J.; Quintas, P. Z.; Raja, R.; Rajagopalan, S.; Reay, N. W.; Reucroft, S.; Rijssenbeek, M.; Rockwell, T.; Roco, M.; Rubinov, P.; Ruchti, R.; Rutherfoord, J. P.; Santoro, A.; Sawyer, L.; Schamberger, R. D.; Schellman, H.; Schwartzman, A.; Sculli, J.; Sen, N.; Shabalina, E.; Shankar, H. C.; Shivpuri, R. K.; Shpakov, D.; Shupe, M. A.; Sidwell, R. A.; Singh, H.; Singh, Jagbir; Sirotenko, V.; Slattery, P.; Smith, E.; Smith, R. P.; Snihur, R.; Snow, G. R.; Snow, J.; Snyder, S.; Solomon, J.; Song, X.; Sorı́n, V.; Sosebee, M.; Sotnikova, N.; Souza, M.; Stanton, N. R.; Steinbrück, G.; Stephens, R. W.; Stevenson, M. L.; Stichelbaut, F.; Stoker, D. P.; Stolin, V.; Stoyanova, D. A.; Strauss, M.; Streets, K.; Strovink, M.; Stutte, L.; Sznajder, A.; Tarazi, J.; Tartaglia, M.; Thomas, T. L.; Thompson, J.; Toback, D.; Trippe, T. G.; Turcot, A. S.; Tuts, P. M.; Gemmeren, P. van; Vaniev, V.; Varelas, N.; Volkov, A.; Vorobiev, A. P.; Wahl, H. D.; Warchol, J.; Watts, G.; Wayne, M.; Weerts, H.; White, A. S.; White, J. T.; Wightman, J. A.; Willis, S.; Wimpenny, S.; Wirjawan, J. V.D.; Womersley, J.; Wood, D.; Yamada, R.; Yamin, P.; Yasuda, T.; Yip, K.; Youssef, S.; Yu, J.; Yu, Y.; Zanabria, M.; Zheng, Hua; Zhou, Z.; Zhu, Z. H.; Zieliński, Marcin; Ziemińska, D.; Ziemiński, A.; Zutshi, V.; Zverev, E. G.; Zylberstejn, A.

doi:10.1103/physrevlett.84.2786

Cited by 79 publications

(61 citation statements)

References 22 publications

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“…The possibility that parton showering and hadronization may influence the power index n is revealed by the measurements of the transverse differential cross section of hadron and photon jets for pp collisions at Fermilab by the CDF and D0 collaborations [49][50][51][52][53]. In these measurements, the power indices n are found to be close to n=4-5 (see Fig.…”

Section: Introductionmentioning

confidence: 96%

Tsallis fits topTspectra and multiple hard scattering inppcollisions at the LHC

2013

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Phenomenological Tsallis fits to the CMS, ATLAS, and ALICE transverse momentum spectra of hadrons for pp collisions at LHC were recently found to extend over a large range of the transverse momentum. We investigate whether the few degrees of freedom in the Tsallis parametrization may arising from the relativistic parton-parton hard-scattering and related processes. The effects of the multiple hard-scattering and parton showering processes on the power law are discussed. We find empirically that whereas the transverse spectra of both hadrons and jets exhibit power-law behavior of 1/p n T at high pT , the power indices n for hadrons are systematically greater than those for jets, for which n∼4-5.

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Section: Introductionmentioning

confidence: 96%

Tsallis fits topTspectra and multiple hard scattering inppcollisions at the LHC

2013

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“…The experimental measurements cover a large domain of center-of-mass energy and also a wide range of photon transverse energy . The prompt photon production cross section at the LHC [11][12][13][14][15][16] has a significantly higher magnitude when compared to the Tevatron [3][4][5][6][7][8][9][10]. It is also much larger than the photoproduction cross section at HERA [42][43][44].…”

Section: Introductionmentioning

confidence: 93%

“…From past to present, prompt photon production at hadron colliders has undergone very impressive experimental [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18] and theoretical developments. The experimental measurements cover a large domain of center-of-mass energy and also a wide range of photon transverse energy .…”

Section: Introductionmentioning

confidence: 99%

Predictions for the Isolated Prompt Photon Production at the LHC ats= 13 TeV

Goharipour

Mehraban

2017

Advances in High Energy Physics

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The prompt photon production in hadronic collisions has a long history of providing information on the substructure of hadrons and testing the perturbative techniques of QCD. Some valuable information about the parton densities in the nucleon and nuclei, especially of the gluon, can also be achieved by analysing the measurements of the prompt photon production cross section whether inclusively or in association with heavy quarks or jets. In this work, we present predictions for the inclusive isolated prompt photon production in pp collisions at center-of-mass energy of 13 TeV using various modern PDF sets. The calculations are presented as a function of both photon transverse energy and pseudorapidity for the ATLAS kinematic coverage. We also study in detail the theoretical uncertainty in the cross sections due to the variation of the renormalization, factorization, and fragmentation scales. Moreover, we introduce and calculate the ratios of photon momenta for different rapidity regions and study the impact of various input PDFs on such quantity.

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“…• the energy scale of the jets was varied by ±1.5% for jets with E jet T > 10 GeV, ±2.5% for jets with E jet T in the range [6,10] GeV and ±4% for jets with E jet T < 6 GeV. The uncertainty was typically ±7%;…”

Section: Systematic Uncertaintiesmentioning

confidence: 99%

“…Their production probes the underlying partonic process and can provide information on the structure of the proton. Processes of this type have been studied in a number of fixed-target and hadron-collider experiments [1][2][3][4][5][6][7][8][9][10]. The production of isolated photons in photoproduction, where the incoming photon is quasi-real, was previously studied at HERA by the ZEUS and H1 collaborations [11][12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Further studies of isolated photon production with a jet in deep inelastic scattering at HERA

Abramowicz

Abt

Adamczyk

et al. 2018

J. High Energ. Phys.

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Isolated photons with high transverse energy have been studied in deep inelastic ep scattering with the ZEUS detector at HERA, using an integrated luminosity of 326 pb −1 in the range of exchanged-photon virtuality 10-350 GeV 2 . Outgoing isolated photons with transverse energy 4 < E γ T < 15 GeV and pseudorapidity −0.7 < η γ < 0.9 were measured with accompanying jets having transverse energy and pseudorapidity 2.5 < E jet T < 35 GeV and −1.5 < η jet < 1.8, respectively. Differential cross sections are presented for the following variables: the fraction of the incoming photon energy and momentum that is transferred to the outgoing photon and the leading jet; the fraction of the incoming proton energy transferred to the photon and leading jet; the differences in azimuthal angle and pseudorapidity between the outgoing photon and the leading jet and between the outgoing photon and the scattered electron. Comparisons are made with theoretical predictions: a leading-logarithm Monte Carlo simulation, a next-to-leading-order QCD prediction, and a prediction using the k T -factorisation approach.

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Isolated Photon Cross Section inpp¯Collisions at√s=1.8

Cited by 79 publications

References 22 publications

Tsallis fits topTspectra and multiple hard scattering inppcollisions at the LHC

Tsallis fits topTspectra and multiple hard scattering inppcollisions at the LHC

Predictions for the Isolated Prompt Photon Production at the LHC ats= 13 TeV

Further studies of isolated photon production with a jet in deep inelastic scattering at HERA

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