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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.

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 Y. A.;Grzelak G.;Gwenlan C.;Hlushchenko O.;Hochman D.;Ibrahim Z. A.;Iga Y.;Jomhari N. Z.;Kadenko I.;Kananov S.;Karshon U.;Kaur P.;Kisielewska D.;Klanner R.;Klein U.;Korzhavina I. A.;Kotanski A.;Kovalchuk N.;Kowalski H.;Krupa B.;Kuprash O.;Kuze M.;Levchenko B. B.;Levy A.;Libov V.;Lisovyi M.;Lohr B.;Lohrmann E.;Longhin A.;Lukina O. Y.;Makarenko I.;Malka J.;Masciocchi S.;Mohamad Idris F.;Mohammad Nasir N.;Myronenko V.;Nagano K.;Nam J. D.;Nicassio M.;Onderwaater J.;Onishchuk Y.;Paul E.;Pidhurskyi I.;Pokrovskiy N. S.;Polini A.;Przybycien M.;Quintero A.;Ruspa M.;Saxon D. H.;Schioppa M.;Schneekloth U.;Schorner-Sadenius T.;Selyuzhenkov I.;Shchedrolosiev M.;Shcheglova L. M.;Shyrma Y.;Skillicorn I. O.;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.;Wan Abdullah W. A. T.;Wichmann K.;Wing M.;Yamada S.;Yamazaki Y.;Zarnecki A. F.;Zawiejski L.;Zenaiev O.;Zhautykov B. O.

2019-01-01

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.

Scheda breve

Scheda completa

Scheda completa (DC)

	Anno
	
			2019
		
	Titolo rivista
	
			PHYSICAL REVIEW D
		
	N. Volume
	
			99
		
	Fascicolo
	
			092006
		
	Pagine (da)
	
			1
		
	Pagine (a)
	
			12
		
	DOI
	
			https://dx.doi.org/10.1103/PhysRevD.99.092006
		
	URL del prodotto (archivi open access, fulltext su sito editore, etc.)
	
			http://dx.doi.org/10.1103/PhysRevD.99.092006
		
	Parole Chiave
	
			HERA, ZEUS, Deep inelastic scattering, Leptoquarks, Beyond the Standard Model
		
	Tutti gli autori
	
			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 Y.A.; Grzelak G.; Gwenlan C.; Hlushchenko O.; Hochman D.; Ibrahim Z.A.; Iga Y.; Jomhari N.Z.; Kadenko I.; Kananov S.; Karshon U.; Kaur P.; Kisielewska D.; Klanner R.; Klein U.; Korzhavina I.A.; Kotanski A.; Kovalchuk N.; Kowalski H.; Krupa B.; Kuprash O.; Kuze M.; Levchenko B.B.; Levy A.; Libov V.; Lisovyi M.; Lohr B.; Lohrmann E.; Longhin A.; Lukina O.Y.; Makarenko I.; Malka J.; Masciocchi S.; Mohamad Idris F.; Mohammad Nasir N.; Myronenko V.; Nagano K.; Nam J.D.; Nicassio M.; Onderwaater J.; Onishchuk Y.; Paul E.; Pidhurskyi I.; Pokrovskiy N.S.; Polini A.; Przybycien M.; Quintero A.; Ruspa M.; Saxon D.H.; Schioppa M.; Schneekloth U.; Schorner-Sadenius T.; Selyuzhenkov I.; Shchedrolosiev M.; Shcheglova L.M.; Shyrma Y.; Skillicorn I.O.; 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.; Wan Abdullah W.A.T.; Wichmann K.; Wing M.; Yamada S.; Yamazaki Y.; Zarnecki A.F.; Zawiejski L.; Zenaiev O.; Zhautykov B.O.
		
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2318/1768692

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