Limits on contact interactions and leptoquarks at HERA

Abramowicz, H. and Abt, I. and Adamczyk, L. and Adamus, M. and Aggarwal, R. and Antonelli, S. and Aushev, V. and Behnke, O. and Behrens, U. and Bertolin, A. and Bloch, I. and Brock, I. and Brook, N.H. and Brugnera, R. and Bruni, A. and Bussey, P.J. and Caldwell, A. and Capua, M. and Catterall, C.D. and Chwastowski, J. and Ciborowski, J. and Ciesielski, R. and Cooper-Sarkar, A.M. and Corradi, M. and Dementiev, R.K. and Devenish, R.C.E. and Dusini, S. and Ferrando, J. and Foster, B. and Gallo, E. and Garfagnini, A. and Geiser, A. and Gizhko, A. and Gladilin, L.K. and Golubkov, Yu. A. and Grzelak, G. and Gwenlan, C. and Hlushchenko, O. and Hochman, D. and Ibrahim, Zainol Abidin and Iga, Y. and Jomhari, N.Z. and Kadenko, I. and Kananov, S. and Karshon, U. and Kaur, P. and Kisielewska, D. and Klanner, R. and Klein, U. and Korzhavina, I.A. and Kotański, A. and Kovalchuk, N. and Kowalski, H. and Krupa, B. and Kuprash, O. and Kuze, M. and Levchenko, B.B. and Levy, A. and Libov, V. and Lisovyi, M. and Löhr, B. and Lohrmann, E. and Longhin, A. and Lukina, O. Yu. and Makarenko, I. and Malka, J. and Masciocchi, S. and Mohamad Idris, F. and Mohammad Nasir, N. and Myronenko, V. and Nagano, K. and Nam, J.D. and Nicassio, M. and Onderwaater, J. and Onishchuk, Yu. and Paul, E. and Pidhurskyi, I. and Pokrovskiy, N.S. and Polini, A. and Przybycień, M. and Quintero, A. and Ruspa, M. and Saxon, D.H. and Schioppa, M. and Schneekloth, U. and Schörner-Sadenius, T. and Selyuzhenkov, I. and Shchedrolosiev, M. and Shcheglova, L.M. and Shyrma, Yu. and Skillicorn, I.O. and Słomiński, W. and Solano, A. and Stanco, L. and Stefaniuk, N. and Stern, A. and Stopa, P. and Surrow, B. and Sztuk-Dambietz, J. and Tassi, E. and Tokushuku, K. and Tomaszewska, J. and Tsurugai, T. and Turcato, M. and Turkot, O. and Tymieniecka, T. and Verbytskyi, A. and Wan Abdullah, Wan Ahmad Tajuddin and Wichmann, K. and Wing, M. and Yamada, S. and Yamazaki, Y. and Żarnecki, A.F. and Zawiejski, L. and Zenaiev, O. and Zhautykov, B.O. (2019) Limits on contact interactions and leptoquarks at HERA. Physical Review D, 99 (9). 092004. ISSN 2470-0010, DOI

Full text not available from this repository.
Official URL:


High-precision HERA data corresponding to a luminosity of around 1 fb-1 have been used in the framework of eeqq contact interactions (CI) to set limits on possible high-energy contributions beyond the Standard Model to electron-quark scattering. Measurements of the inclusive deep inelastic cross sections in neutral and charged current ep scattering were considered. The analysis of the ep data has been based on simultaneous fits of parton distribution functions including contributions of CI couplings to ep scattering. Several general CI models and scenarios with heavy leptoquarks were considered. Improvements in the description of the inclusive HERA data were obtained for a few models. Since a statistically significant deviation from the Standard Model cannot be established, limits in the TeV range were set on all models considered. © 2019 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the »» Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.

Item Type: Article
Uncontrolled Keywords: Collisions; Jets; Proton–proton collisions
Subjects: Q Science > Q Science (General)
Q Science > QC Physics
Divisions: Faculty of Science > Department of Physics
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 15 May 2020 04:33
Last Modified: 15 May 2020 04:33

Actions (login required)

View Item View Item