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Limits on contact interactions and leptoquarks at HERA

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 sec...

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Main Authors:	Abramowicz, H., Abt, I., Adamczyk, L., Adamus, M., Aggarwal, R., Antonelli, S., Aushev, V., Behnke, O., Behrens, U., Bertolin, A., Bloch, I., Brock, I., Brook, N.H., Brugnera, R., Bruni, A., Bussey, P.J., Caldwell, A., Capua, M., Catterall, C.D., Chwastowski, J., Ciborowski, J., Ciesielski, R., Cooper-Sarkar, A.M., Corradi, M., Dementiev, R.K., Devenish, R.C.E., Dusini, S., Ferrando, J., Foster, B., Gallo, E., Garfagnini, A., Geiser, A., Gizhko, A., Gladilin, L.K., Golubkov, Yu. A., Grzelak, G., Gwenlan, C., Hlushchenko, O., Hochman, D., Ibrahim, Zainol Abidin, Iga, Y., Jomhari, N.Z., Kadenko, I., Kananov, S., Karshon, U., Kaur, P., Kisielewska, D., Klanner, R., Klein, U., Korzhavina, I.A., Kotański, A., Kovalchuk, N., Kowalski, H., Krupa, B., Kuprash, O., Kuze, M., Levchenko, B.B., Levy, A., Libov, V., Lisovyi, M., Löhr, B., Lohrmann, E., Longhin, A., Lukina, O. Yu., Makarenko, I., Malka, J., Masciocchi, S., Mohamad Idris, F., Mohammad Nasir, N., Myronenko, V., Nagano, K., Nam, J.D., Nicassio, M., Onderwaater, J., Onishchuk, Yu., Paul, E., Pidhurskyi, I., Pokrovskiy, N.S., Polini, A., Przybycień, M., Quintero, A., Ruspa, M., Saxon, D.H., Schioppa, M., Schneekloth, U., Schörner-Sadenius, T., Selyuzhenkov, I., Shchedrolosiev, M., Shcheglova, L.M., Shyrma, Yu., Skillicorn, I.O., Słomiński, 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., Wan Abdullah, Wan Ahmad Tajuddin, Wichmann, K., Wing, M., Yamada, S., Yamazaki, Y., Żarnecki, A.F., Zawiejski, L., Zenaiev, O., Zhautykov, B.O.
Format:	Article
Published:	American Physical Society 2019
Subjects:	Q Science (General) QC Physics
Online Access:	http://eprints.um.edu.my/24287/ https://doi.org/10.1103/PhysRevD.99.092006
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record_format	eprints
institution	Universiti Malaya
building	UM Library
collection	Institutional Repository
continent	Asia
country	Malaysia
content_provider	Universiti Malaya
content_source	UM Research Repository
url_provider	http://eprints.um.edu.my/
topic	Q Science (General) QC Physics
spellingShingle	Q Science (General) QC Physics Abramowicz, H. Abt, I. Adamczyk, L. Adamus, M. Aggarwal, R. Antonelli, S. Aushev, V. Behnke, O. Behrens, U. Bertolin, A. Bloch, I. Brock, I. Brook, N.H. Brugnera, R. Bruni, A. Bussey, P.J. Caldwell, A. Capua, M. Catterall, C.D. Chwastowski, J. Ciborowski, J. Ciesielski, R. Cooper-Sarkar, A.M. Corradi, M. Dementiev, R.K. Devenish, R.C.E. Dusini, S. Ferrando, J. Foster, B. Gallo, E. Garfagnini, A. Geiser, A. Gizhko, A. Gladilin, L.K. Golubkov, Yu. A. Grzelak, G. Gwenlan, C. Hlushchenko, O. Hochman, D. Ibrahim, Zainol Abidin Iga, Y. Jomhari, N.Z. Kadenko, I. Kananov, S. Karshon, U. Kaur, P. Kisielewska, D. Klanner, R. Klein, U. Korzhavina, I.A. Kotański, A. Kovalchuk, N. Kowalski, H. Krupa, B. Kuprash, O. Kuze, M. Levchenko, B.B. Levy, A. Libov, V. Lisovyi, M. Löhr, B. Lohrmann, E. Longhin, A. Lukina, O. Yu. Makarenko, I. Malka, J. Masciocchi, S. Mohamad Idris, F. Mohammad Nasir, N. Myronenko, V. Nagano, K. Nam, J.D. Nicassio, M. Onderwaater, J. Onishchuk, Yu. Paul, E. Pidhurskyi, I. Pokrovskiy, N.S. Polini, A. Przybycień, M. Quintero, A. Ruspa, M. Saxon, D.H. Schioppa, M. Schneekloth, U. Schörner-Sadenius, T. Selyuzhenkov, I. Shchedrolosiev, M. Shcheglova, L.M. Shyrma, Yu. Skillicorn, I.O. Słomiński, 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. Wan Abdullah, Wan Ahmad Tajuddin Wichmann, K. Wing, M. Yamada, S. Yamazaki, Y. Żarnecki, A.F. Zawiejski, L. Zenaiev, O. Zhautykov, B.O. Limits on contact interactions and leptoquarks at HERA
description	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 »https://creativecommons.org/licenses/by/4.0/» 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.
format	Article
author	Abramowicz, H. Abt, I. Adamczyk, L. Adamus, M. Aggarwal, R. Antonelli, S. Aushev, V. Behnke, O. Behrens, U. Bertolin, A. Bloch, I. Brock, I. Brook, N.H. Brugnera, R. Bruni, A. Bussey, P.J. Caldwell, A. Capua, M. Catterall, C.D. Chwastowski, J. Ciborowski, J. Ciesielski, R. Cooper-Sarkar, A.M. Corradi, M. Dementiev, R.K. Devenish, R.C.E. Dusini, S. Ferrando, J. Foster, B. Gallo, E. Garfagnini, A. Geiser, A. Gizhko, A. Gladilin, L.K. Golubkov, Yu. A. Grzelak, G. Gwenlan, C. Hlushchenko, O. Hochman, D. Ibrahim, Zainol Abidin Iga, Y. Jomhari, N.Z. Kadenko, I. Kananov, S. Karshon, U. Kaur, P. Kisielewska, D. Klanner, R. Klein, U. Korzhavina, I.A. Kotański, A. Kovalchuk, N. Kowalski, H. Krupa, B. Kuprash, O. Kuze, M. Levchenko, B.B. Levy, A. Libov, V. Lisovyi, M. Löhr, B. Lohrmann, E. Longhin, A. Lukina, O. Yu. Makarenko, I. Malka, J. Masciocchi, S. Mohamad Idris, F. Mohammad Nasir, N. Myronenko, V. Nagano, K. Nam, J.D. Nicassio, M. Onderwaater, J. Onishchuk, Yu. Paul, E. Pidhurskyi, I. Pokrovskiy, N.S. Polini, A. Przybycień, M. Quintero, A. Ruspa, M. Saxon, D.H. Schioppa, M. Schneekloth, U. Schörner-Sadenius, T. Selyuzhenkov, I. Shchedrolosiev, M. Shcheglova, L.M. Shyrma, Yu. Skillicorn, I.O. Słomiński, 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. Wan Abdullah, Wan Ahmad Tajuddin Wichmann, K. Wing, M. Yamada, S. Yamazaki, Y. Żarnecki, A.F. Zawiejski, L. Zenaiev, O. Zhautykov, B.O.
author_facet	Abramowicz, H. Abt, I. Adamczyk, L. Adamus, M. Aggarwal, R. Antonelli, S. Aushev, V. Behnke, O. Behrens, U. Bertolin, A. Bloch, I. Brock, I. Brook, N.H. Brugnera, R. Bruni, A. Bussey, P.J. Caldwell, A. Capua, M. Catterall, C.D. Chwastowski, J. Ciborowski, J. Ciesielski, R. Cooper-Sarkar, A.M. Corradi, M. Dementiev, R.K. Devenish, R.C.E. Dusini, S. Ferrando, J. Foster, B. Gallo, E. Garfagnini, A. Geiser, A. Gizhko, A. Gladilin, L.K. Golubkov, Yu. A. Grzelak, G. Gwenlan, C. Hlushchenko, O. Hochman, D. Ibrahim, Zainol Abidin Iga, Y. Jomhari, N.Z. Kadenko, I. Kananov, S. Karshon, U. Kaur, P. Kisielewska, D. Klanner, R. Klein, U. Korzhavina, I.A. Kotański, A. Kovalchuk, N. Kowalski, H. Krupa, B. Kuprash, O. Kuze, M. Levchenko, B.B. Levy, A. Libov, V. Lisovyi, M. Löhr, B. Lohrmann, E. Longhin, A. Lukina, O. Yu. Makarenko, I. Malka, J. Masciocchi, S. Mohamad Idris, F. Mohammad Nasir, N. Myronenko, V. Nagano, K. Nam, J.D. Nicassio, M. Onderwaater, J. Onishchuk, Yu. Paul, E. Pidhurskyi, I. Pokrovskiy, N.S. Polini, A. Przybycień, M. Quintero, A. Ruspa, M. Saxon, D.H. Schioppa, M. Schneekloth, U. Schörner-Sadenius, T. Selyuzhenkov, I. Shchedrolosiev, M. Shcheglova, L.M. Shyrma, Yu. Skillicorn, I.O. Słomiński, 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. Wan Abdullah, Wan Ahmad Tajuddin Wichmann, K. Wing, M. Yamada, S. Yamazaki, Y. Żarnecki, A.F. Zawiejski, L. Zenaiev, O. Zhautykov, B.O.
author_sort	Abramowicz, H.
title	Limits on contact interactions and leptoquarks at HERA
title_short	Limits on contact interactions and leptoquarks at HERA
title_full	Limits on contact interactions and leptoquarks at HERA
title_fullStr	Limits on contact interactions and leptoquarks at HERA
title_full_unstemmed	Limits on contact interactions and leptoquarks at HERA
title_sort	limits on contact interactions and leptoquarks at hera
publisher	American Physical Society
publishDate	2019
url	http://eprints.um.edu.my/24287/ https://doi.org/10.1103/PhysRevD.99.092006
_version_	1669007987626213376
spelling	my.um.eprints.242872020-05-15T04:33:34Z http://eprints.um.edu.my/24287/ Limits on contact interactions and leptoquarks at HERA Abramowicz, H. Abt, I. Adamczyk, L. Adamus, M. Aggarwal, R. Antonelli, S. Aushev, V. Behnke, O. Behrens, U. Bertolin, A. Bloch, I. Brock, I. Brook, N.H. Brugnera, R. Bruni, A. Bussey, P.J. Caldwell, A. Capua, M. Catterall, C.D. Chwastowski, J. Ciborowski, J. Ciesielski, R. Cooper-Sarkar, A.M. Corradi, M. Dementiev, R.K. Devenish, R.C.E. Dusini, S. Ferrando, J. Foster, B. Gallo, E. Garfagnini, A. Geiser, A. Gizhko, A. Gladilin, L.K. Golubkov, Yu. A. Grzelak, G. Gwenlan, C. Hlushchenko, O. Hochman, D. Ibrahim, Zainol Abidin Iga, Y. Jomhari, N.Z. Kadenko, I. Kananov, S. Karshon, U. Kaur, P. Kisielewska, D. Klanner, R. Klein, U. Korzhavina, I.A. Kotański, A. Kovalchuk, N. Kowalski, H. Krupa, B. Kuprash, O. Kuze, M. Levchenko, B.B. Levy, A. Libov, V. Lisovyi, M. Löhr, B. Lohrmann, E. Longhin, A. Lukina, O. Yu. Makarenko, I. Malka, J. Masciocchi, S. Mohamad Idris, F. Mohammad Nasir, N. Myronenko, V. Nagano, K. Nam, J.D. Nicassio, M. Onderwaater, J. Onishchuk, Yu. Paul, E. Pidhurskyi, I. Pokrovskiy, N.S. Polini, A. Przybycień, M. Quintero, A. Ruspa, M. Saxon, D.H. Schioppa, M. Schneekloth, U. Schörner-Sadenius, T. Selyuzhenkov, I. Shchedrolosiev, M. Shcheglova, L.M. Shyrma, Yu. Skillicorn, I.O. Słomiński, 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. Wan Abdullah, Wan Ahmad Tajuddin Wichmann, K. Wing, M. Yamada, S. Yamazaki, Y. Żarnecki, A.F. Zawiejski, L. Zenaiev, O. Zhautykov, B.O. Q Science (General) QC Physics 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 »https://creativecommons.org/licenses/by/4.0/» 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. American Physical Society 2019 Article PeerReviewed 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 https://doi.org/10.1103/PhysRevD.99.092006 doi:10.1103/PhysRevD.99.092006
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Limits on contact interactions and leptoquarks at HERA

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