Diffractive photoproduction of dijets in ep collisions at HERA

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Brownson, E[ 53 ]; Brugnera; Brummer, N[ 32 ]; Bruni; Bruni; Brzozowska, B[ 50 ]; Bussey; Butterworth, JM[ 49 ]; Buttner, C[ 29 ]; Bylsma, B[ 32 ]; C[ 9; Caldwell, A[ 29 ]; Capua; Carlin; Catterall, CD[ 54 ]; Chekanov, S[ 1 ]; Chwastowski, J[ 8 ]; Ciborowski; Ciesielski, R; Cifarelli; Cindolo; Cole, JE[ 40 ]; Contin; Cooper Sarkar, AM[ 33 ]; Coppola, N; Corradi; Corriveau, F[ 25 ]; Costa, M[ 47 ]; Cui, Y[ 54 ]; D'Agostini; D[ 11; D[ 4; Dal Corso; Danielson, T[ 53 ]; de Favereau, J[ 23 ]; DE PASQUALE, Salvatore; del Peso, J[ 24 ]; Dementiev, RK[ 28 ]; Derrick, M[ 1 ]; Devenish, RCE[ 33 ]; Dobur, D[ 15 ]; Dolgoshein, BA[ 27 ]; Doyle, AT[ 16 ]; Drugakov, V; Dunne, W[ 16 ]; Durkin, LS[ 32 ]; Dusini; E[ 13; E[ 30; E[ 62; EG[ 20; Eisenberg, Y[ 52 ]; Ermolov, PF[ 28 ]; Eskreys, A[ 8 ]; Everett, A[ 53 ]; F[ 34; F[ 4; Fang, S; Fazio; Ferrando, J[ 33 ]; Ferrero; Figiel, J[ 8 ]; Forrest, M[ 16 ]; Foster, B[ 33 ]; Foudas, C[ 19 ]; Fourletov, S[ 48 ]; Fourletova, J[ 11 ]; Fry, C[ 19 ]; G[ 13; G[ 29; G[ 38; G[ 38; G[ 4; G[ 4; G[ 4; G[ 4; G[ 62; Gabareen, A[ 41 ]; Galas, A[ 8 ]; Gallo; Garfagnini; Geiser, A[ 11 ]; Gialas, I[ 17 ]; Gil, M[ 8 ]; Giller, I[ 52 ]; Gladilin, LK[ 28 ]; Gladkov, D[ 11 ]; Glasman, C[ 24 ]; Gottlicher, P[ 11 ]; Grabowska Bold, I[ 9 ]; Grebenyuk, J[ 11 ]; Gregor, I[ 11 ]; Grigorescu; Grzelak, G[ 50 ]; Gwenlan, C[ 49 ]; H[ 30; Haas, T[ 11 ]; Hain, W[ 11 ]; Hamatsu, R[ 44 ]; Hart, JC[ 40 ]; Hartmann, H[ 60 ]; Hartner, G[ 54 ]; Heath, GP[ 61 ]; Hilger, E[ 60 ]; Hochman, D[ 52 ]; Holm, U[ 18 ]; Hori, R[ 43 ]; Huttmann, A[ 11 ]; Iacobucci; Ibrahim, ZA[ 6 ]; Iga, Y[ 37 ]; Ingbir, R[ 41 ]; J[ 50; Jakob, HP[ 60 ]; Jechow, M[ 3 ]; Jimenez, M[ 24 ]; Jones, TW[ 49 ]; Jungst, M[ 60 ]; Kagawa, S[ 43 ]; Kahle, B[ 11 ]; Kaji, H[ 44 ]; Kamaluddin, B[ 6 ]; Kananov, S[ 41 ]; Karshon, U[ 52 ]; Karstens, F[ 15 ]; Katkov, II[ 11 ]; Kcira, D[ 53 ]; Keramidas; Khein, LA[ 28 ]; Kim, JY[ 5 ]; Kind, OM[ 60 ]; Kisielewska, D[ 9 ]; Kitamura; Klanner, R[ 18 ]; Klein, U[ 11 ]; Koffeman; Kollar, D[ 29 ]; Kooijman; Korcsak Gorzo, K[ 33 ]; Korzhavina, IA[ 28 ]; Kotanski, A[ 10 ]; Kotz, U[ 11 ]; Kowalski, H[ 11 ]; Kozulia; Kulinski, P[ 50 ]; Kuze, M[ 42 ]; Kuzmin, VA[ 28 ]; L[ 30; L[ 34; L[ 4; L[ 4; Labarga, L[ 24 ]; Lee, A[ 32 ]; Levchenko, BB[ 28 ]; Levy, A[ 41 ]; Limentani; Ling, TY[ 32 ]; Lisovyi; Liu, C[ 25 ]; Lobodzinska, E[ 11 ]; Lohmann, W[ 12 ]; Lohr, B[ 11 ]; Lohrmann, E[ 18 ]; Loizides, JH[ 49 ]; Long, KR[ 19 ]; Longhin; Lukasik, J[ 9 ]; Lukina, OY[ 28 ]; Luzniak, P[ 50 ]; M[ 18; M[ 21; M[ 21; M[ 30; M[ 4; M[ 4; M[ 4; M[ 62; M[ 62; Maeda, J[ 42 ]; Magill, S[ 1 ]; Malka, J[ 50 ]; Mankel, R[ 11 ]; Margotti; Marini; Martin, JF[ 48 ]; Mastroberardino; Matsumoto, T[ 20 ]; Mattingly, MCK[ 2 ]; Melzer Pellmann, IA[ 11 ]; Menary, S[ 54 ]; MI[ 45; Miglioranzi, S[ 11 ]; Molina, AGY[ 3 ]; Monaco; Montanari, A[ 11 ]; Morris, JD[ 61 ]; Musgrave, B[ 1 ]; Nagano, K[ 20 ]; Namsoo, T[ 11 ]; Nania; Nicholass, D[ 1 ]; Nigro; Ning, Y[ 7 ]; Noor, U[ 54 ]; Notz, D[ 11 ]; Nowak, RJ[ 50 ]; Nuncio Quiroz, AE[ 60 ]; Oh, BY[ 36 ]; Okazaki, N[ 43 ]; Oliver, K[ 33 ]; Olkiewicz, K[ 8 ]; Ota, O[ 44 ]; P[ 30; P[ 34; P[ 4; Papageorgiu, K[ 17 ]; Patel, S[ 33 ]; Paul, E[ 60 ]; Pavel, N[ 3 ]; Pawlak, JM[ 50 ]; Pelfer; Pellegrino; PG[ 13; Piotrzkowski, K[ 23 ]; PJ[ 15; Plucinski, P[ 51 ]; Pokrovskiy, NS[ 65 ]; Polini; Proskuryakov, AS[ 28 ]; Przybycien, M[ 9 ]; R[ 34; R[ 34; R[ 4; R[ 45; Raval, A[ 36 ]; Reeder, DD[ 53 ]; Ren, Z[ 7 ]; Renner, R[ 60 ]; Repond, J[ 1 ]; Ri, YD[ 44 ]; Rinaldi, L[ 11 ]; Roberfroid, V[ 33 ]; Robertson, A[ 33 ]; Roloff, P[ 11 ]; Ron, E[ 24 ]; Rosin, M[ 52 ]; Rubinsky, I[ 11 ]; Ruspa, M[ 47 ]; Ryan, P[ 53 ]; S[ 34; S[ 34; S[ 4; S[ 4; S[ 44; S[ 62; Sacchi; Samson, U[ 60 ]; Santamarta, R[ 11 ]; Sartorelli; Savin, AA[ 53 ]; Saxon, DH[ 16 ]; Schioppa; Schlenstedt, S[ 12 ]; Schleper, P[ 18 ]; Schmidke, WB[ 29 ]; Schneekloth, U[ 11 ]; Schonberg, V[ 60 ]; Schorner Sadenius, T[ 18 ]; Sciulli, F[ 7 ]; Shcheglova, LM[ 28 ]; Shehzadi, R[ 60 ]; Shimizu, S[ 43 ]; Skillicorn, IO[ 16 ]; Slominski, W[ 10 ]; Smith, O[ 41 ]; Smith, WH[ 53 ]; Soares, M[ 24 ]; Solano; Son, D[ 64 ]; Sosnovtsev, V[ 27 ]; Spiridonov; Stadie, H[ 18 ]; Stanco; Standage, J[ 54 ]; Stern, A[ 41 ]; Stewart, TP[ 48 ]; Stifutkin, A[ 27 ]; Stopa, P[ 8 ]; Straub, PB[ 33 ]; Suchkov, S[ 27 ]; Susinno; Suszycki, L[ 9 ]; Sutiak, J[ 29 ]; Sztuk, J[ 18 ]; Szuba; Szuba, J[ 11 ]; Tapper, AD[ 19 ]; Tassi; Tawara, T[ 43 ]; Terron, J[ 24 ]; Theedt, T[ 11 ]; Tiecke; Tokushuku, K[ 20 ]; Tsurugai, T[ 26 ]; Turcato; Turcato, M; Tymieniecka, T[ 50 ]; Ukleja, A[ 50 ]; Ukleja, J[ 36 ]; Uribe Estrada; V[ 21; V[ 45; Vazquez; Vlasov, NN[ 15 ]; Walczak, R[ 33 ]; Walsh, R[ 25 ]; Whitmore, JJ[ 36 ]; Whyte, J.; Wiggers; Wing, M[ 49 ]; Wlasenko, M[ 60 ]; Wolf, G[ 11 ]; Wolfe, H[ 53 ]; Wrona, K[ 11 ]; Yamada, S[ 20 ]; Yamazaki, Y[ 20 ]; Yoshida, R[ 1 ]; Youngman, C[ 11 ]; Zambrana, M[ 24 ]; Zarnecki, AF[ 50 ]; Zawiejski, L[ 8 ]; Zeuner, W[ 11 ]; Zhautykov, BO[ 65 ]; Zhou, C[ 25 ]; Zichichi; Zotkin, DS[ 28 ]; Zotkin, SA[ 28 ]

Diffractive photoproduction of dijets in ep collisions at HERA

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A[ 11
A[ 21
A[ 30
A[ 30
A[ 34
A[ 34
A[ 34
A[ 38
A[ 4
A[ 4
A[ 4
A[ 4
A[ 4
A[ 45
A[ 62
WATW[ 6 ] Abdullah
H[ 41 ] Abramowicz
I[ 29 ] Abt
L[ 9 ] Adamczyk
M[ 51 ] Adamus
V[ 11 ] Adler
PD[ 33 ] Allfrey
AN[ 20
Antonelli
Antonioli
A[ 27 ] Antonov
M[ 47 ] Arneodo
Aushev
A[ 15 ] Bamberger
Barakbaev
Barbagli
Bari
F[ 24 ] Barreiro
D[ 60 ] Bartsch
Basile
U Behrens
MA[ 33 ] Bell
Bellagamba
Bellan
Bertolin
S[ 54 ] Bhadra
Bindi
C Blohm
T[ 9 ] Bold
A Bonato
Boos
Borodin
K Borras
Boscherini
SK[ 49 ] Boutle
I[ 60 ] Brock
NH[ 61 ] Brook
E[ 53 ] Brownson
Brugnera
N[ 32 ] Brummer
Bruni
Bruni
B[ 50 ] Brzozowska
Bussey
JM[ 49 ] Butterworth
C[ 29 ] Buttner
B[ 32 ] Bylsma
C[ 9
A[ 29 ] Caldwell
Capua
Carlin
CD[ 54 ] Catterall
S[ 1 ] Chekanov
J[ 8 ] Chwastowski
Ciborowski
R Ciesielski
Cifarelli
Cindolo
JE[ 40 ] Cole
Contin
AM[ 33 ] Cooper Sarkar
N Coppola
Corradi
F[ 25 ] Corriveau
M[ 47 ] Costa
Y[ 54 ] Cui
D'Agostini
D[ 11
D[ 4
Dal Corso
T[ 53 ] Danielson
J[ 23 ] de Favereau
Salvatore DE PASQUALE
J[ 24 ] del Peso
RK[ 28 ] Dementiev
M[ 1 ] Derrick
RCE[ 33 ] Devenish
D[ 15 ] Dobur
BA[ 27 ] Dolgoshein
AT[ 16 ] Doyle
V Drugakov
W[ 16 ] Dunne
LS[ 32 ] Durkin
Dusini
E[ 13
E[ 30
E[ 62
EG[ 20
Y[ 52 ] Eisenberg
PF[ 28 ] Ermolov
A[ 8 ] Eskreys
A[ 53 ] Everett
F[ 34
F[ 4
S Fang
Fazio
J[ 33 ] Ferrando
Ferrero
J[ 8 ] Figiel
M[ 16 ] Forrest
B[ 33 ] Foster
C[ 19 ] Foudas
S[ 48 ] Fourletov
J[ 11 ] Fourletova
C[ 19 ] Fry
G[ 13
G[ 29
G[ 38
G[ 38
G[ 4
G[ 4
G[ 4
G[ 4
G[ 62
A[ 41 ] Gabareen
A[ 8 ] Galas
Gallo
Garfagnini
A[ 11 ] Geiser
I[ 17 ] Gialas
M[ 8 ] Gil
I[ 52 ] Giller
LK[ 28 ] Gladilin
D[ 11 ] Gladkov
C[ 24 ] Glasman
P[ 11 ] Gottlicher
I[ 9 ] Grabowska Bold
J[ 11 ] Grebenyuk
I[ 11 ] Gregor
Grigorescu
G[ 50 ] Grzelak
C[ 49 ] Gwenlan
H[ 30
T[ 11 ] Haas
W[ 11 ] Hain
R[ 44 ] Hamatsu
JC[ 40 ] Hart
H[ 60 ] Hartmann
G[ 54 ] Hartner
GP[ 61 ] Heath
E[ 60 ] Hilger
D[ 52 ] Hochman
U[ 18 ] Holm
R[ 43 ] Hori
A[ 11 ] Huttmann
Iacobucci
ZA[ 6 ] Ibrahim
Y[ 37 ] Iga
R[ 41 ] Ingbir
J[ 50
HP[ 60 ] Jakob
M[ 3 ] Jechow
M[ 24 ] Jimenez
TW[ 49 ] Jones
M[ 60 ] Jungst
S[ 43 ] Kagawa
B[ 11 ] Kahle
H[ 44 ] Kaji
B[ 6 ] Kamaluddin
S[ 41 ] Kananov
U[ 52 ] Karshon
F[ 15 ] Karstens
II[ 11 ] Katkov
D[ 53 ] Kcira
Keramidas
LA[ 28 ] Khein
JY[ 5 ] Kim
OM[ 60 ] Kind
D[ 9 ] Kisielewska
Kitamura
R[ 18 ] Klanner
U[ 11 ] Klein
Koffeman
D[ 29 ] Kollar
Kooijman
K[ 33 ] Korcsak Gorzo
IA[ 28 ] Korzhavina
A[ 10 ] Kotanski
U[ 11 ] Kotz
H[ 11 ] Kowalski
Kozulia
P[ 50 ] Kulinski
M[ 42 ] Kuze
VA[ 28 ] Kuzmin
L[ 30
L[ 34
L[ 4
L[ 4
L[ 24 ] Labarga
A[ 32 ] Lee
BB[ 28 ] Levchenko
A[ 41 ] Levy
Limentani
TY[ 32 ] Ling
Lisovyi
C[ 25 ] Liu
E[ 11 ] Lobodzinska
W[ 12 ] Lohmann
B[ 11 ] Lohr
E[ 18 ] Lohrmann
JH[ 49 ] Loizides
KR[ 19 ] Long
Longhin
J[ 9 ] Lukasik
OY[ 28 ] Lukina
P[ 50 ] Luzniak
M[ 18
M[ 21
M[ 21
M[ 30
M[ 4
M[ 4
M[ 4
M[ 62
M[ 62
J[ 42 ] Maeda
S[ 1 ] Magill
J[ 50 ] Malka
R[ 11 ] Mankel
Margotti
Marini
JF[ 48 ] Martin
Mastroberardino
T[ 20 ] Matsumoto
MCK[ 2 ] Mattingly
IA[ 11 ] Melzer Pellmann
S[ 54 ] Menary
MI[ 45
S[ 11 ] Miglioranzi
AGY[ 3 ] Molina
Monaco
A[ 11 ] Montanari
JD[ 61 ] Morris
B[ 1 ] Musgrave
K[ 20 ] Nagano
T[ 11 ] Namsoo
Nania
D[ 1 ] Nicholass
Nigro
Y[ 7 ] Ning
U[ 54 ] Noor
D[ 11 ] Notz
RJ[ 50 ] Nowak
AE[ 60 ] Nuncio Quiroz
BY[ 36 ] Oh
N[ 43 ] Okazaki
K[ 33 ] Oliver
K[ 8 ] Olkiewicz
O[ 44 ] Ota
P[ 30
P[ 34
P[ 4
K[ 17 ] Papageorgiu
S[ 33 ] Patel
E[ 60 ] Paul
N[ 3 ] Pavel
JM[ 50 ] Pawlak
Pelfer
Pellegrino
PG[ 13
K[ 23 ] Piotrzkowski
PJ[ 15
P[ 51 ] Plucinski
NS[ 65 ] Pokrovskiy
Polini
AS[ 28 ] Proskuryakov
M[ 9 ] Przybycien
R[ 34
R[ 34
R[ 4
R[ 45
A[ 36 ] Raval
DD[ 53 ] Reeder
Z[ 7 ] Ren
R[ 60 ] Renner
J[ 1 ] Repond
YD[ 44 ] Ri
L[ 11 ] Rinaldi
V[ 33 ] Roberfroid
A[ 33 ] Robertson
P[ 11 ] Roloff
E[ 24 ] Ron
M[ 52 ] Rosin
I[ 11 ] Rubinsky
M[ 47 ] Ruspa
P[ 53 ] Ryan
S[ 34
S[ 34
S[ 4
S[ 4
S[ 44
S[ 62
Sacchi
U[ 60 ] Samson
R[ 11 ] Santamarta
Sartorelli
AA[ 53 ] Savin
DH[ 16 ] Saxon
Schioppa
S[ 12 ] Schlenstedt
P[ 18 ] Schleper
WB[ 29 ] Schmidke
U[ 11 ] Schneekloth
V[ 60 ] Schonberg
T[ 18 ] Schorner Sadenius
F[ 7 ] Sciulli
LM[ 28 ] Shcheglova
R[ 60 ] Shehzadi
S[ 43 ] Shimizu
IO[ 16 ] Skillicorn
W[ 10 ] Slominski
O[ 41 ] Smith
WH[ 53 ] Smith
M[ 24 ] Soares
Solano
D[ 64 ] Son
V[ 27 ] Sosnovtsev
Spiridonov
H[ 18 ] Stadie
Stanco
J[ 54 ] Standage
A[ 41 ] Stern
TP[ 48 ] Stewart
A[ 27 ] Stifutkin
P[ 8 ] Stopa
PB[ 33 ] Straub
S[ 27 ] Suchkov
Susinno
L[ 9 ] Suszycki
J[ 29 ] Sutiak
J[ 18 ] Sztuk
Szuba
J[ 11 ] Szuba
AD[ 19 ] Tapper
Tassi
T[ 43 ] Tawara
J[ 24 ] Terron
T[ 11 ] Theedt
Tiecke
K[ 20 ] Tokushuku
T[ 26 ] Tsurugai
Turcato
M Turcato
T[ 50 ] Tymieniecka
A[ 50 ] Ukleja
J[ 36 ] Ukleja
Uribe Estrada
V[ 21
V[ 45
Vazquez
NN[ 15 ] Vlasov
R[ 33 ] Walczak
R[ 25 ] Walsh
JJ[ 36 ] Whitmore
J. Whyte
Wiggers
M[ 49 ] Wing
M[ 60 ] Wlasenko
G[ 11 ] Wolf
H[ 53 ] Wolfe
K[ 11 ] Wrona
S[ 20 ] Yamada
Y[ 20 ] Yamazaki
R[ 1 ] Yoshida
C[ 11 ] Youngman
M[ 24 ] Zambrana
AF[ 50 ] Zarnecki
L[ 8 ] Zawiejski
W[ 11 ] Zeuner
BO[ 65 ] Zhautykov
C[ 25 ] Zhou
Zichichi
DS[ 28 ] Zotkin
SA[ 28 ] Zotkin
Publication date: 1 January 2008
Publisher: 'Springer Science and Business Media LLC'
Doi

Abstract

Diffractive photoproduction of dijets was measured with the ZEUS detector at the ep collider HERA using an integrated luminosity of 77.2 pb-1. The measurements were made in the kinematic range Q2 2, 0.202 is the photon virtuality, y is the inelasticity and xIP is the fraction of the proton momentum taken by the diffractive exchange. The two jets with the highest transverse energy, ET jet, were required to satisfy ET jet>7.5 and 6.5 GeV, respectively, and to lie in the pseudorapidity range -1.5jet<1.5. Differential cross sections were compared to perturbative QCD calculations using available parameterisations of diffractive parton distributions of the proton