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29 March 2024
 
  » arxiv » 1505.5783

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Production of exclusive dijets in diffractive deep inelastic scattering at HERA
ZEUS Collaboration ; H. Abramowicz ; I. Abt ; L. Adamczyk ; M. Adamus ; S. Antonelli ; V. Aushev ; Y. Aushev ; O. Behnke ; U. Behrens ; A. Bertolin ; I. Bloch ; E.G. Boos ; K. Borras ; I. Brock ; N.H. Brook ; R. Brugnera ; A. Bruni ; P.J. Bussey ; A. Caldwell ; M. Capua ; C.D. Catterall ; J. Chwastowski ; J. Ciborowski ; R. Ciesielski ; A.M. Cooper-Sarkar ; M. Corradi ; F. Corriveau ; R.K. Dementiev ; R.C.E. Devenish ; G. Dolinska ; S. Dusini ; J. Figiel ; B. Foster ; G. Gach ; E. Gallo ; A. Garfagnini ; A. Geiser ; A. Gizhko ; L.K. Gladilin ; Yu.A. Golubkov ; J. Grebenyuk ; I. Gregor ; G. Grzelak ; O. Gueta ; M. Guzik ; W. Hain ; D. Hochman ; R. Hori ; Z.A. Ibrahim ; Y. Iga ; M. Ishitsuka ; A. Iudin ; F. Januschek ; N.Z. Jomhari ; I. Kadenko ; S. Kananov ; U. Karshon ; M. Kaur ; P. Kaur ; D. Kisielewska ; R. Klanner ; U. Klein ; N. Kondrashova ; O. Kononenko ; Ie. Korol ; I.A. Korzhavina ; A. Kotański ; U. Kötz ; N. Kovalchuk ; H. Kowalski ; B. Krupa ; O. Kuprash ; M. Kuze ; B.B. Levchenko ; A. Levy ; V. Libov ; S. Limentani ; M. Lisovyi ; E. Lobodzinska ; B. Löhr ; E. Lohrmann ; A. Longhin ; D. Lontkovskyi ; O.Yu. Lukina ; I. Makarenko ; J. Malka ; S. Mergelmeyer ; F. Mohamad Idris ; N. Mohammad Nasir ; V. Myronenko ; K. Nagano ; T. Nobe ; D. Notz ; R.J. Nowak ; Yu. Onishchuk ; E. Paul ; W. Perlański ; N.S. Pokrovskiy ; M. Przybycień ; P. Roloff ; I. Rubinsky ; M. Ruspa ; D.H. Saxon ; M. Schioppa ; W.B. Schmidke ; U. Schneekloth ; T. Schörner-Sadenius ; L.M. Shcheglova ; R. Shevchenko ; O. Shkola ; Yu. Shyrma ; I. Singh ; I.O. Skillicorn ; W. Słomiński ; A. Solano ; L. Stanco ; N. Stefaniuk ; A. Stern ; P. Stopa ; J. Sztuk-Dambietz ; D. Szuba ; J. Szuba ; E. Tassi ; K. Tokushuku ; J. Tomaszewska ; A. Trofymov ; T. Tsurugai ; M. Turcato ; O. Turkot ; T. Tymieniecka ; A. Verbytskyi ; O. Viazlo ; R. Walczak ; W.A.T. Wan Abdullah ; K. Wichmann ; M. Wing ; G. Wolf ; S. Yamada ; Y. Yamazaki ; N. Zakharchuk ; A.F. Żarnecki ; L. Zawiejski ; O. Zenaiev ; B.O. Zhautykov ; N. Zhmak ; D.S. Zotkin ;
Date 21 May 2015
AbstractProduction of exclusive dijets in diffractive deep inelastic $e^pm p$ scattering has been measured with the ZEUS detector at HERA using an integrated luminosity of 372 pb$^{-1}$. The measurement was performed for $gamma^*-p$ centre-of-mass energies in the range $90 < W < 250$ GeV and for photon virtualities $Q^2 > 25$ GeV$^2$. Energy and transverse-energy flows around the jet axis are presented. The cross section is presented as a function of $eta$ and $phi$, where $eta=x/x_{ m I!P}$, $x$ is the Bjorken variable and $x_{ m I!P}$ is the proton fractional longitudinal momentum loss. The angle $phi$ is defined by the $gamma^*-$dijet plane and the $gamma^*-e^pm$ plane in the rest frame of the diffractive final state. The $phi$ cross section is measured in bins of $eta$. The results are compared to predictions from models based on different assumptions about the nature of the diffractive exchange.
Source arXiv, 1505.5783
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