Limits on contact interactions and leptoquarks at HERA

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Abramowicz, H, Abt, I, Adamczyk, L, Adamus, M, Aggarwal, R, Antonelli, S, Aushev, V, Behnke, O, Behrens, U, Bertolin, A et al (show 106 more authors) , Bloch, I, Brock, I, Brook, NH, Brugnera, R, Bruni, A, Bussey, PJ, Caldwell, A, Capua, M, Catterall, CD, Chwastowski, J, Ciborowski, J, Ciesielski, R, Cooper-Sarkar, AM, Corradi, M, Dementiev, RK, Devenish, RCE, Dusini, S, Ferrando, J, Foster, B, Gallo, E, Garfagnini, A, Geiser, A, Gizhko, A, Gladilin, LK, Golubkov, Yu A, Grzelak, G, Gwenlan, C, Hlushchenko, O, Hochman, D, Ibrahim, ZA, Iga, Y, Jomhari, NZ, Kadenko, I, Kananov, S, Karshon, U, Kaur, P, Kisielewska, D, Klanner, R, Klein, U ORCID: 0000-0001-7391-5330, Korzhavina, IA, Kotanski, A, Kovalchuk, N, Kowalski, H, Krupa, B, Kuprash, O, Kuze, M, Levchenko, BB, Levy, A, Libov, V, Lisovyi, M, Loehr, B, Lohrmann, E, Longhin, A, Lukina, O Yu, Makarenko, I, Malka, J, Masciocchi, S, Idris, F Mohamad, Nasir, N Mohammad, Myronenko, V, Nagano, K, Nam, JD, Nicassio, M, Onderwaater, J, Onishchuk, Yu, Paul, E, Pidhurskyi, I, Pokrovskiy, NS, Polini, A, Przybycien, M, Quintero, A, Ruspa, M, Saxon, DH, Schioppa, M, Schneekloth, U, Schoerner-Sadenius, T, Selyuzhenkov, I, Shchedrolosiev, M, Shcheglova, LM, Shyrma, Yu, Skillicorn, IO, Slominski, W, Solano, A, Stanco, L, Stefaniuk, N, Stern, A, Stopa, P, Surrow, B, Sztuk-Dambietz, J, Tassi, E, Tokushuku, K, Tomaszewska, J, Tsurugai, T, Turcato, M, Turkot, O, Tymieniecka, T, Verbytskyi, A, Abdullah, WAT Wan, Wichmann, K, Wing, M, Yamada, S, Yamazaki, Y, Zarnecki, AF, Zawiejski, L, Zenaiev, O and Zhautykov, BO (2019) Limits on contact interactions and leptoquarks at HERA. PHYSICAL REVIEW D, 99 (9). 092006-. ISSN 2470-0010, 2470-0029

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Abstract

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.

Item Type:	Article
Uncontrolled Keywords:	5106 Nuclear and Plasma Physics, 5107 Particle and High Energy Physics, 51 Physical Sciences
Depositing User:	Symplectic Admin
Date Deposited:	15 Aug 2019 08:22
Last Modified:	07 Dec 2024 07:18
DOI:	10.1103/PhysRevD.99.092006
Open Access URL:	http://doi.org/10.1103/PhysRevD.99.092006
Related URLs:	Author Publisher
URI:	https://livrepository.liverpool.ac.uk/id/eprint/3051793