Attenzione: i dati modificati non sono ancora stati salvati. Per confermare inserimenti o cancellazioni di voci è necessario confermare con il tasto SALVA/INSERISCI in fondo alla pagina
IRIS
The photoproduction of prompt photons, together with an accompanying jet, has been studied in ep collisions at a centre-of-mass energy of 318 GeV with the ZEUS detector at HERA using an integrated luminosity of 77 pb(-1). Cross sections were measured for the transverse energy of the photon and the jet larger than 5 and 6 GeV, respectively. The differential gamma+jet cross sections were reconstructed as functions of the transverse energy, pseudorapidity and x(gamma) (obs), the fraction of the incoming photon momentum taken by the photon-jet system. Predictions based on leading-logarithm parton-shower Monte Carlo models and next-to-leading-order (NLO) QCD generally underestimate the cross sections for the transverse energies of prompt photons below 7 GeV, while the k(T)-factorisation QCD calculation agrees with the data better. When the minimum transverse energy of prompt photons is increased to 7 GeV, both NLO QCD and the k(T)-factorisation calculations are in good agreement with the data. RI De Pasquale, Salvatore/B-9165-2008; Wing, Matthew/C-2169-2008; IBRAHIM, ZAINOL ABIDIN/C-1121-2010; Fazio, Salvatore /G-5156-2010; WAN ABDULLAH, WAN AHMAD TAJUDDIN/B-5439-2010; Doyle, Anthony/C-5889-2009; Ferrando, James/A-9192-2012; Gladilin, Leonid/B-5226-2011
The photoproduction of prompt photons, together with an accompanying jet, has been studied in ep collisions at a centre-of-mass energy of 318 GeV with the ZEUS detector at HERA using an integrated luminosity of 77 pb(-1). Cross sections were measured for the transverse energy of the photon and the jet larger than 5 and 6 GeV, respectively. The differential gamma+jet cross sections were reconstructed as functions of the transverse energy, pseudorapidity and x(gamma) (obs), the fraction of the incoming photon momentum taken by the photon-jet system. Predictions based on leading-logarithm parton-shower Monte Carlo models and next-to-leading-order (NLO) QCD generally underestimate the cross sections for the transverse energies of prompt photons below 7 GeV, while the k(T)-factorisation QCD calculation agrees with the data better. When the minimum transverse energy of prompt photons is increased to 7 GeV, both NLO QCD and the k(T)-factorisation calculations are in good agreement with the data.
The photoproduction of prompt photons, together with an accompanying jet, has been studied in ep collisions at a centre-of-mass energy of 318 GeV with the ZEUS detector at HERA using an integrated luminosity of 77 pb(-1). Cross sections were measured for the transverse energy of the photon and the jet larger than 5 and 6 GeV, respectively. The differential gamma+jet cross sections were reconstructed as functions of the transverse energy, pseudorapidity and x(gamma) (obs), the fraction of the incoming photon momentum taken by the photon-jet system. Predictions based on leading-logarithm parton-shower Monte Carlo models and next-to-leading-order (NLO) QCD generally underestimate the cross sections for the transverse energies of prompt photons below 7 GeV, while the k(T)-factorisation QCD calculation agrees with the data better. When the minimum transverse energy of prompt photons is increased to 7 GeV, both NLO QCD and the k(T)-factorisation calculations are in good agreement with the data.
Measurement of prompt photons with associated jets in photoproduction at HERA
Chekanov S.;Derrick M.;Magill S.;Miglioranzi S.;Musgrave B.;Nicholass D.;Repond J.;Yoshida R.;Mattingly M. C. K.;Pavel N.;Molina A. G. Yaguees;Antonelli S.;Antonioli P.;Bari G.;Basile M.;Bellagamba L.;Bindi M.;Boscherini D.;Bruni A.;Bruni G.;Cifarelli L.;Cindolo F.;Contin A.;Corradi M.;De Pasquale S.;Iacobucci G.;Margotti A.;Nania R.;Polini A.;Rinaldi L.;Sartorelli G.;Zichichi A.;Aghuzumtsyan G.;Bartsch D.;Brock I.;Goers S.;Hartmann H.;Hilger E.;Jakob H. P.;Juengst M.;Kind O. M.;Paul E.;Rautenberg J.;Renner R.;Samson U.;Schoenberg V.;Wang M.;Wlasenko M.;Brook N. H.;Heath G. P.;Morris J. D.;Namsoo T.;CAPUA, Marcella;Fazio S.;MASTROBERARDINO, Anna;Schioppa M.;Susinno G.;TASSI, Enrico;Kim J. Y.;Ma K. J.;Ibrahim Z. A.;Kamaluddin B.;Abdullah W. A. T. Wan;Ning Y.;Ren Z.;Sciulli F.;Chwastowski J.;Eskreys A.;Figiel J.;Galas A.;Gil M.;Olkiewicz K.;Stopa P.;Zawiejski L.;Adamczyk L.;Bold T.;Grabowska Bold I.;Kisielewska D.;Lukasik J.;Przybycien M.;Suszycki L.;Kotanski A.;Slominski W.;Adler V.;Behrens U.;Bloch I.;Bonato A.;Borras K.;Coppola N.;Fourletova J.;Geiser A.;Gladkov D.;Goettlicher P.;Gregor I.;Gutsche O.;Haas T.;Hain W.;Horn C.;Kahle B.;Koetz U.;Kowalski H.;Lim H.;Lobodzinska E.;Loehr B.;Mankel R.;Melzer Pellmann I. A.;Montanari A.;Nguyen C. N.;Notz D.;Nuncio Quiroz A. E.;Santamarta R.;Schneekloth U.;Spiridonov A.;Stadie H.;Stoesslein U.;Szuba D.;Szuba J.;Theedt T.;Watt G.;Wolf G.;Wrona K.;Youngman C.;Zeuner W.;Schlenstedt S.;Barbagli G.;Gallo E.;Pelfer P. G.;Bamberger A.;Dobur D.;Karstens F.;Vlasov N. N.;Bussey P. J.;Doyle A. T.;Dunne W.;Ferrando J.;Saxon D. H.;Skillicorn I. O.;Gialas I.;Gosau T.;Holm U.;Klanner R.;Lohrmann E.;Salehi H.;Schleper P.;Schoerner Sadenius T.;Sztuk J.;Wichmann K.;Wick K.;Foudas C.;Fry C.;Long K. R.;Tapper A. D.;Kataoka M.;Matsumoto T.;Nagano K.;Tokushuku K.;Yamada S.;Yamazaki Y.;Barakbaev A. N.;Boos E. G.;Dossanov A.;Pokrovskiy N. S.;Zhautykov B. O.;Son D.;de Favereau J.;Piotrzkowski K.;Barreiro F.;Glasman C.;Jimenez M.;Labarga L.;del Peso J.;Ron E.;Terron J.;Zambrana M.;Corriveau F.;Liu C.;Walsh R.;Zhou C.;Tsurugai T.;Antonov A.;Dolgoshein B. A.;Rubinsky I.;Sosnovtsev V.;Stifutkin A.;Suchkov S.;Dementiev R. K.;Ermolov P. F.;Gladilin L. K.;Katkov I. I.;Khein L. A.;Korzhavina I. A.;Kuzmin V. A.;Levchenko B. B.;Lukina O. Y.;Proskuryakov A. S.;Shcheglova L. M.;Zotkin D. S.;Zotkin S. A.;Zotov N. P.;Abt I.;Buettner C.;Caldwell A.;Kollar D.;Schmidke W. B.;Sutiak J.;Grigorescu G.;Keramidas A.;Koffeman E.;Kooijman P.;Pellegrino A.;Tiecke H.;Vazquez M.;Wiggers L.;Bruemmer N.;Bylsma B.;Durkin L. S.;Lee A.;Ling T. Y.;Allfrey P. D.;Bell M. A.;Cooper Sarkar A. M.;Cottrell A.;Devenish R. C. E.;Foster B.;Gwenlan C.;Korcsak Gorzo K.;Patel S.;Roberfroid V.;Robertson A.;Straub P. B.;Uribe Estrada C.;Walczak R.;Bellan P.;Bertolin A.;Brugnera R.;Carlin R.;Ciesielski R.;DalCorso F.;Dusini S.;Garfagnini A.;Limentani S.;Longhin A.;Stanco L.;Turcato M.;Oh B. Y.;Raval A.;Whitmore J. J.;Iga Y.;D'Agostini G.;Marini G.;Nigro A.;Cole J. E.;Hart J. C.;Abramowicz H.;Gabareen A.;Ingbir R.;Kananov S.;Levy A.;Kuze M.;Hori R.;Kagawa S.;Shimizu S.;Tawara T.;Hamatsu R.;Kaji H.;Kitamura S.;Ota O.;Ri Y. D.;Ferrero M. I.;Monaco V.;Sacchi R.;Solano A.;Arneodo M.;Ruspa M.;Fourletov S.;Martin J. F.;Boutle S. K.;Butterworth J. M.;Hall Wilton R.;Jones T. W.;Loizides J. H.;Sutton M. R.;Targett Adams C.;Wing M.;Brzozowska B.;Ciborowski J.;Grzelak G.;Kulinski P.;Luzniak P.;Malka J.;Nowak R. J.;Pawlak J. M.;Tymieniecka T.;Ukleja A.;Ukleja J.;Zarnecki A. F.;Adamus M.;Plucinski P.;Eisenberg Y.;Giller I.;Hochman D.;Karshon U.;Rosin M.;Brownson E.;Danielson T.;Everett A.;Kcira D.;Reeder D. D.;Ryan P.;Savin A. A.;Smith W. H.;Wolfe H.;Bhadra S.;Catterall C. D.;Cui Y.;Hartner G.;Menary S.;Noor U.;Soares M.;Whyte J.
2007-01-01
Abstract
The photoproduction of prompt photons, together with an accompanying jet, has been studied in ep collisions at a centre-of-mass energy of 318 GeV with the ZEUS detector at HERA using an integrated luminosity of 77 pb(-1). Cross sections were measured for the transverse energy of the photon and the jet larger than 5 and 6 GeV, respectively. The differential gamma+jet cross sections were reconstructed as functions of the transverse energy, pseudorapidity and x(gamma) (obs), the fraction of the incoming photon momentum taken by the photon-jet system. Predictions based on leading-logarithm parton-shower Monte Carlo models and next-to-leading-order (NLO) QCD generally underestimate the cross sections for the transverse energies of prompt photons below 7 GeV, while the k(T)-factorisation QCD calculation agrees with the data better. When the minimum transverse energy of prompt photons is increased to 7 GeV, both NLO QCD and the k(T)-factorisation calculations are in good agreement with the data.
The photoproduction of prompt photons, together with an accompanying jet, has been studied in ep collisions at a centre-of-mass energy of 318 GeV with the ZEUS detector at HERA using an integrated luminosity of 77 pb(-1). Cross sections were measured for the transverse energy of the photon and the jet larger than 5 and 6 GeV, respectively. The differential gamma+jet cross sections were reconstructed as functions of the transverse energy, pseudorapidity and x(gamma) (obs), the fraction of the incoming photon momentum taken by the photon-jet system. Predictions based on leading-logarithm parton-shower Monte Carlo models and next-to-leading-order (NLO) QCD generally underestimate the cross sections for the transverse energies of prompt photons below 7 GeV, while the k(T)-factorisation QCD calculation agrees with the data better. When the minimum transverse energy of prompt photons is increased to 7 GeV, both NLO QCD and the k(T)-factorisation calculations are in good agreement with the data. RI De Pasquale, Salvatore/B-9165-2008; Wing, Matthew/C-2169-2008; IBRAHIM, ZAINOL ABIDIN/C-1121-2010; Fazio, Salvatore /G-5156-2010; WAN ABDULLAH, WAN AHMAD TAJUDDIN/B-5439-2010; Doyle, Anthony/C-5889-2009; Ferrando, James/A-9192-2012; Gladilin, Leonid/B-5226-2011
The photoproduction of prompt photons, together with an accompanying jet, has been studied in ep collisions at a centre-of-mass energy of 318 GeV with the ZEUS detector at HERA using an integrated luminosity of 77 pb(-1). Cross sections were measured for the transverse energy of the photon and the jet larger than 5 and 6 GeV, respectively. The differential gamma+jet cross sections were reconstructed as functions of the transverse energy, pseudorapidity and x(gamma) (obs), the fraction of the incoming photon momentum taken by the photon-jet system. Predictions based on leading-logarithm parton-shower Monte Carlo models and next-to-leading-order (NLO) QCD generally underestimate the cross sections for the transverse energies of prompt photons below 7 GeV, while the k(T)-factorisation QCD calculation agrees with the data better. When the minimum transverse energy of prompt photons is increased to 7 GeV, both NLO QCD and the k(T)-factorisation calculations are in good agreement with the data.
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/20.500.11770/126862
Attenzione
Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo
Citazioni
ND
40
25
social impact
Conferma cancellazione
Sei sicuro che questo prodotto debba essere cancellato?
simulazione ASN
Il report seguente simula gli indicatori relativi alla propria produzione scientifica in relazione alle soglie ASN 2023-2025 del proprio SC/SSD. Si ricorda che il superamento dei valori soglia (almeno 2 su 3) è requisito necessario ma non sufficiente al conseguimento dell'abilitazione. La simulazione si basa sui dati IRIS e sugli indicatori bibliometrici alla data indicata e non tiene conto di eventuali periodi di congedo obbligatorio, che in sede di domanda ASN danno diritto a incrementi percentuali dei valori. La simulazione può differire dall'esito di un’eventuale domanda ASN sia per errori di catalogazione e/o dati mancanti in IRIS, sia per la variabilità dei dati bibliometrici nel tempo. Si consideri che Anvur calcola i valori degli indicatori all'ultima data utile per la presentazione delle domande.
La presente simulazione è stata realizzata sulla base delle specifiche raccolte sul tavolo ER del Focus Group IRIS coordinato dall’Università di Modena e Reggio Emilia e delle regole riportate nel DM 589/2018 e allegata Tabella A. Cineca, l’Università di Modena e Reggio Emilia e il Focus Group IRIS non si assumono alcuna responsabilità in merito all’uso che il diretto interessato o terzi faranno della simulazione. Si specifica inoltre che la simulazione contiene calcoli effettuati con dati e algoritmi di pubblico dominio e deve quindi essere considerata come un mero ausilio al calcolo svolgibile manualmente o con strumenti equivalenti.
