Observation of isolated high-ET photons in deep inelastic scattering

Sergei V. Chekanov, Malcolm Derrick, J.H. Loizides, S. Magill, S.Miglioranzi, B.Musgrave, J. Repond, R. Yoshida, M.C.K. Mattingly, N.Pavel

90 more authors

P. Antonioli, Giacomo Bari, M. Basile, L. Bellagamba, D. Boscherini, A. Bruni, G. Bruni, G. Cara Romeo, L. Cifarelli, F. Cindolo, A. Contin, M. Corradi, S. De Pasquale, P. Giusti, GIUSEPPE IACOBUCCI, A. Margotti, A. Montanari, R. Nania, F. Palmonari, A. Pesci, Lorenzo Rinaldi, G. Sartorelli, A. Zichichi, G. Aghuzumtsyan, D. Bartsch, Ian C. Brock, S. Goers, H. Hartmann, E. Hilger, P. Irrgang, H.‐P. Jakob, O. M. Kind, U. Meyer, E. Paul, J. Rautenberg, R. Renner, A. Stifutkin, J. Tandler, K.C. Voss, Meng Wang, D. S. Bailey, Nicholas H Brook, J. E. Cole, G.P. Heath, T. Namsoo, S. Robins, Matthew Wing, M. Capua, Anna Mastroberardino, Marco Schioppa, G. Susinno, J.Y. Kim, I. T. Lim, K.J. Ma, M.Y. Pac, M. Helbich, Y. Ning, Z. Ren, W. B. Schmidke, F. J. Sciulli, J. J. Chwastowski, A. Eskreys, J. Figiel, A. Galas, K. Olkiewicz, P. Stopa, L. Zawiejski, L. Adamczyk, T. Bołd, I. Grabowska-Bołd, Danuta Kisielewska, A.M. Kowal, M. Kowal, J. Łukasik, M. Przybycień, L. Suszycki, D. Szuba, J. Szuba, A. Kotański, W. Słomiński, V. Adler, U. Behrens, I. Bloch, K. Borras, V. Chiochia, D. Dannheim, G. Drews, J. Fourletova, U. Fricke, A. Geiser

2004

Full text Open access: Hybrid Metadata (CSL-JSON)
DOI 10.1016/j.physletb.2004.05.033
Data confidence 70 medium
How this score is calculated

It is built from checkable properties of the record itself: whether the article has a DOI, how many independent sources confirmed its data, whether the required fields are filled in, and how recent the latest confirmation is. Disagreement between sources and a missing identifier lower it. A value of 80 or above means the record was published without further checking; 60 to 79 means it is published at reduced confidence, with a manual check advisable. A record verified by an editor by hand is never pushed below 90 by a recalculation. This scores our data about the article, not the article itself.

Abstract

First measurements of cross sections for isolated prompt photon production in deep inelastic ep scattering have been made using the ZEUS detector at the HERA electron–proton collider using an integrated luminosity of 121 pb−1. A signal for isolated photons in the transverse energy and rapidity ranges 5 35GeV2. Cross sections are presented for inclusive prompt photons and for those accompanied by a single jet in the range ETjet⩾6GeV and −1.5⩽ηjet<1.8. Calculations at order α3αs describe the data reasonably well.