Measurement of direct photon production in p+p collisions at sqrt[s] = 200 GeV

Cross sections for midrapidity production of direct photons in p+p collisions at the Relativistic Heavy Ion Collider (RHIC) are reported for transverse momenta of 3 < pT < 16 GeV/c. Next-to-leading order perturbative QCD (pQCD) describes the data well for pT >5 GeV/c, where the uncertaintie...

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Veröffentlicht in:	Physical review letters 2007-01, Vol.98 (1), p.012002-012002
Hauptverfasser:	Adler, S S, Afanasiev, S, Aidala, C, Ajitanand, N N, Akiba, Y, Al-Jamel, A, Alexander, J, Aoki, K, Aphecetche, L, Armendariz, R, Aronson, S H, Averbeck, R, Awes, T C, Babintsev, V, Baldisseri, A, Barish, K N, Barnes, P D, Bassalleck, B, Bathe, S, Batsouli, S, Baublis, V, Bauer, F, Bazilevsky, A, Belikov, S, Bjorndal, M T, Boissevain, J G, Borel, H, Brooks, M L, Brown, D S, Bruner, N, Bucher, D, Buesching, H, Bumazhnov, V, Bunce, G, Burward-Hoy, J M, Butsyk, S, Camard, X, Chand, P, Chang, W C, Chernichenko, S, Chi, C Y, Chiba, J, Chiu, M, Choi, I J, Choudhury, R K, Chujo, T, Cianciolo, V, Cobigo, Y, Cole, B A, Comets, M P, Constantin, P, Csanád, M, Csörgo, T, Cussonneau, J P, d'Enterria, D, Das, K, David, G, Deák, F, Delagrange, H, Denisov, A, Deshpande, A, Desmond, E J, Devismes, A, Dietzsch, O, Drachenberg, J L, Drapier, O, Drees, A, Durum, A, Dutta, D, Dzhordzhadze, V, Efremenko, Y V, En'yo, H, Espagnon, B, Esumi, S, Fields, D E, Finck, C, Fleuret, F, Fokin, S L, Fox, B D, Fraenkel, Z, Frantz, J E, Franz, A, Frawley, A D, Fukao, Y, Fung, S-Y, Gadrat, S, Germain, M, Glenn, A, Gonin, M, Gosset, J, Goto, Y, Granier de Cassagnac, R, Grau, N, Greene, S V, Perdekamp, M Grosse, Gustafsson, H-A, Hachiya, T, Haggerty, J S, Hamagaki, H, Hansen, A G
Format:	Artikel
Sprache:	eng
Schlagworte:	ATOMIC AND MOLECULAR PHYSICS CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS CROSS SECTIONS HEAVY IONS High Energy Physics - Experiment PHOTONS Physics PHYSICS OF ELEMENTARY PARTICLES AND FIELDS PRODUCTION QUANTUM CHROMODYNAMICS
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