Professor Amanda Cooper-Sarkar: Publications

Leading neutron energy and pT distributions in deep inelastic scattering and photoproduction at HERA

ArXiv hep-ex/0702028 (2007)

Authors:

ZEUS Collaboration, S Chekanov

Jet-radius dependence of inclusive-jet cross sections in deep inelastic scattering at HERA

ArXiv hep-ex/0701039 (2007)

Authors:

ZEUS Collaboration, S Chekanov

Impact of and Constraints on PDFs at the LHC

(2007)

Impact of and constraints on PDFs at the LHC

15th International Workshop on Deep-Inelastic Scattering and Related Subjects, DIS 2007 (2007)

Abstract:

Uncertainties on parton distribution functions (PDFs) compromise discovery at the LHC for any new physics which can be described as a contact-interaction. PDF uncertainties also limit our ability to use W and Z cross-sections as anaccurate luminosity monitor. The impact of the current level of PDF uncertainty on LHC physics is reviewed and the possibility of reducing this uncertainty using LHC data is investigated.

Measurement of neutral current cross sections at high Bjorken-x with the ZEUS detector at HERA

European Physical Journal C 49:2 (2007) 523-544

Authors:

S Chekanov, M Derrick, S Magill, S Miglioranzi, B Musgrave, D Nicholass, J Repond, R Yoshida, MCK Mattingly, N Pavel, AGY Molina, S Antonelli, P Antonioli, G Bari, M Basile, L Bellagamba, M Bindi, D Boscherini, A Bruni, G Bruni, L Cifarelli, F Cindolo, A Contin, M Corradi, S De Pasquale, G Iacobucci, A Margotti, R Nania, A Polini, L Rinaldi, G Sartorelli, A Zichichi, G Aghuzumtsyan, D Bartsch, I Brock, S Goers, H Hartmann, E Hilger, HP Jakob, M Jüngst, OM Kind, E Paul, J Rautenberg, R Renner, U Samson, V Schönberg, M Wang, M Wlasenko, NH Brook, GP Heath, JD Morris, T Namsoo, M Capua, S Fazio, A Mastroberardino, M Schioppa, G Susinno, E Tassi, JY Kim, KJ Ma, ZA Ibrahim, B Kamaluddin, WAT Wan Abdullah, Y Ning, Z Ren, F Sciulli, J Chwastowski, A Eskreys, J Figiel, A Galas, M Gil, K Olkiewicz, P Stopa, L Zawiejski, L Adamczyk, T Bołd, I Grabowska-Bołd, D Kisielewska, J Łukasik, M Przybycień, L Suszycki, A Kotański, W Słomiński, V Adler, U Behrens, I Bloch, A Bonato, K Borras, N Coppola, J Fourletova, A Geiser, D Gladkov, P Göttlicher, I Gregor, O Gutsche, T Haas, W Hain, C Horn, B Kahle, U Kötz

Abstract:

A new method is employed to measure the neutral current cross section up to Bjorken-x values of one with the ZEUS detector at HERA using an integrated luminosity of 65.1 pb^-1 for e⁺p collisions and 16.7 pb^-1 for e^-p collisions at √s = 318 GeV and 38.6 pb^-1 for e⁺p collisions at √s = 300 GeV. Cross sections have been extracted for Q² ≥648 GeV² and are compared to predictions using different parton density functions. For the highest x bins, the data have a tendency to lie above the expectations using recent parton density function parametrizations. © Springer-Verlag Berlin Heidelberg 2007.

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