Search for QCD instanton-induced processes at HERA in the high- Q2 domain: H1 Collaboration

V. Andreev; A. Baghdasaryan; K. Begzsuren; A. Belousov; A. Bolz; V. Boudry; G. Brandt; V. Brisson; D. Britzger; A. Buniatyan; A. Bylinkin; L. Bystritskaya; A. J. Campbell; K. B. Cantun Avila; K. Cerny; V. Chekelian; J. G. Contreras; J. Cvach; J. B. Dainton; K. Daum; C. Diaconu; M. Dobre; V. Dodonov; G. Eckerlin; S. Egli; E. Elsen; L. Favart; A. Fedotov; J. Feltesse; J. Ferencei; M. Fleischer; A. Fomenko; E. Gabathuler; J. Gayler; S. Ghazaryan; L. Goerlich; N. Gogitidze; M. Gouzevitch; C. Grab; A. Grebenyuk; T. Greenshaw; G. Grindhammer; D. Haidt; R. C.W. Henderson; J. Hladkỳ; D. Hoffmann; R. Horisberger; T. Hreus; F. Huber; M. Jacquet; X. Janssen; H. Jung; M. Kapichine; J. Katzy; C. Kiesling; M. Klein; C. Kleinwort; R. Kogler; P. Kostka; J. Kretzschmar; D. Krücker; K. Krüger; M. P.J. Landon; W. Lange; P. Laycock; A. Lebedev; S. Levonian; K. Lipka; B. List; J. List; B. Lobodzinski; E. Malinovski; H. U. Martyn; S. J. Maxfield; A. Mehta; A. B. Meyer; H. Meyer; J. Meyer; S. Mikocki; A. Morozov; K. Müller; Th Naumann; P. R. Newman; C. Niebuhr; G. Nowak; J. E. Olsson; D. Ozerov; C. Pascaud; G. D. Patel; E. Perez; A. Petrukhin; I. Picuric; H. Pirumov; D. Pitzl; R. Plačakytė; B. Pokorny; R. Polifka; V. Radescu; N. Raicevic; T. Ravdandorj; P. Reimer; E. Rizvi; P. Robmann; R. Roosen; A. Rostovtsev; M. Rotaru; S. Rusakov; D. Šálek; D. P.C. Sankey; M. Sauter; E. Sauvan; S. Schmitt; L. Schoeffel; A. Schöning; F. Sefkow; S. Shushkevich; Y. Soloviev; P. Sopicki; D. South; V. Spaskov; A. Specka; M. Steder; B. Stella; U. Straumann; T. Sykora; P. D. Thompson; D. Traynor; P. Truöl; I. Tsakov; B. Tseepeldorj; J. Turnau; A. Valkárová; C. Vallée; P. Van Mechelen; Y. Vazdik; D. Wegener; E. Wünsch; J. Žáček; Z. Zhang; R. Žlebčík; H. Zohrabyan; F. Zomer

doi:10.1140/epjc/s10052-016-4194-6

Search for QCD instanton-induced processes at HERA in the high- Q² domain: H1 Collaboration

V. Andreev
, A. Baghdasaryan
, K. Begzsuren
, A. Belousov
, A. Bolz
, V. Boudry
, G. Brandt
, V. Brisson
, D. Britzger
, A. Buniatyan
, A. Bylinkin
, L. Bystritskaya
, A. J. Campbell
, K. B. Cantun Avila
, K. Cerny
, V. Chekelian
, J. G. Contreras
, J. Cvach
, J. B. Dainton
, K. Daum

C. Diaconu, M. Dobre, V. Dodonov, G. Eckerlin, S. Egli, E. Elsen, L. Favart, A. Fedotov, J. Feltesse, J. Ferencei, M. Fleischer, A. Fomenko, E. Gabathuler, J. Gayler, S. Ghazaryan, L. Goerlich, N. Gogitidze, M. Gouzevitch, C. Grab, A. Grebenyuk, T. Greenshaw, G. Grindhammer, D. Haidt, R. C.W. Henderson, J. Hladkỳ, D. Hoffmann, R. Horisberger, T. Hreus, F. Huber, M. Jacquet, X. Janssen, H. Jung, M. Kapichine, J. Katzy, C. Kiesling, M. Klein, C. Kleinwort, R. Kogler, P. Kostka, J. Kretzschmar, D. Krücker, K. Krüger, M. P.J. Landon, W. Lange, P. Laycock, A. Lebedev, S. Levonian, K. Lipka, B. List, J. List, B. Lobodzinski, E. Malinovski, H. U. Martyn, S. J. Maxfield, A. Mehta, A. B. Meyer, H. Meyer, J. Meyer, S. Mikocki, A. Morozov, K. Müller, Th Naumann, P. R. Newman, C. Niebuhr, G. Nowak, J. E. Olsson, D. Ozerov, C. Pascaud, G. D. Patel, E. Perez, A. Petrukhin, I. Picuric, H. Pirumov, D. Pitzl, R. Plačakytė, B. Pokorny, R. Polifka, V. Radescu, N. Raicevic, T. Ravdandorj, P. Reimer, E. Rizvi, P. Robmann, R. Roosen, A. Rostovtsev, M. Rotaru, S. Rusakov, D. Šálek, D. P.C. Sankey, M. Sauter, E. Sauvan, S. Schmitt, L. Schoeffel, A. Schöning, F. Sefkow, S. Shushkevich, Y. Soloviev, P. Sopicki, D. South, V. Spaskov, A. Specka, M. Steder, B. Stella, U. Straumann, T. Sykora, P. D. Thompson, D. Traynor, P. Truöl, I. Tsakov, B. Tseepeldorj, J. Turnau, A. Valkárová, C. Vallée, P. Van Mechelen, Y. Vazdik, D. Wegener, E. Wünsch, J. Žáček, Z. Zhang, R. Žlebčík, H. Zohrabyan, F. Zomer

P.N. Lebedev Physical Institute of the Russian Academy of Sciences
Yerevan Physics Institute
Institute of Physics and Technology of the Mongolian Academy of Sciences
University of Heidelberg
Georg-August-Universität Göttingen
Laboratoire de l'Accélérateur Linéaire
c/o DESY
University of Birmingham
Moscow Institute of Physics and Technology
Institute for Theoretical and Experimental Physics
Dept. Fis. Ap. CINVESTAV
Charles University
Max-Planck-Institut für Physik
Institute of Physics of the Czech Academy of Sciences
University of Liverpool
Bergische Universität Gesamthochschule Wuppertal
Aix Marseille Université
Horia Hulubei National Institute of Physics and Nuclear Engineering
Paul Scherrer Institut
Inter-University Institute for High Energies ULB-VUB
Universite Paris-Saclay
Nuclear Physics Institute ASCR
Institute for Nuclear Physics
IGFL, Université de Lyon, Université Lyon 1
ETH Zurich
Lancaster University
Joint Institute for Nuclear Research, Dubna
Universität Hamburg
Queen Mary University of London
RWTH Aachen University
Physik-Institut der Universität Zürich
European Organization for Nuclear Research
University of Montenegro
University of Toronto
University of Oxford
Institute for Information Transmission Problems (RAS)
CCLRC Rutherford Appleton Laboratory
Université Savoie Mont Blanc
Moscow State University
University Roma Tre
Institute for Nuclear Research and Nuclear Energy Bulgarian Academy of Sciences
Ulaanbaatar University
University of Dortmund

Research output: Contribution to journal › Article › peer-review

9 Citations (Scopus)

Abstract

Signals of QCD instanton-induced processes are searched for in neutral current deep-inelastic scattering at the electron-proton collider HERA in the kinematic region defined by the Bjorken-scaling variable x> 10 ^{- 3}, the inelasticity 0.2 < y< 0.7 and the photon virtuality 150 < Q²< 15000 GeV². The search is performed using H1 data corresponding to an integrated luminosity of 351 pb^{- 1}. No evidence for the production of QCD instanton-induced events is observed. Upper limits on the cross section for instanton-induced processes between 1.5 and 6 pb, at 95% confidence level, are obtained depending on the kinematic domain in which instantons could be produced. Compared to earlier publications, the limits are improved by an order of magnitude and for the first time are challenging predictions.

Original language	English
Article number	381
Journal	European Physical Journal C
Volume	76
Issue number	7
DOIs	https://doi.org/10.1140/epjc/s10052-016-4194-6
Publication status	Published - 1 Jul 2016

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10.1140/epjc/s10052-016-4194-6

Cite this

Andreev, V., Baghdasaryan, A., Begzsuren, K., Belousov, A., Bolz, A., Boudry, V., Brandt, G., Brisson, V., Britzger, D., Buniatyan, A., Bylinkin, A., Bystritskaya, L., Campbell, A. J., Cantun Avila, K. B., Cerny, K., Chekelian, V., Contreras, J. G., Cvach, J., Dainton, J. B., ... Zomer, F. (2016). Search for QCD instanton-induced processes at HERA in the high- Q² domain: H1 Collaboration. European Physical Journal C, 76(7), Article 381. https://doi.org/10.1140/epjc/s10052-016-4194-6

@article{c0bdfaffbce24a7ba3fdb193ff67361f,

title = "Search for QCD instanton-induced processes at HERA in the high- Q2 domain: H1 Collaboration",

abstract = "Signals of QCD instanton-induced processes are searched for in neutral current deep-inelastic scattering at the electron-proton collider HERA in the kinematic region defined by the Bjorken-scaling variable x> 10 - 3, the inelasticity 0.2 < y< 0.7 and the photon virtuality 150 < Q2< 15000 GeV2. The search is performed using H1 data corresponding to an integrated luminosity of 351 pb- 1. No evidence for the production of QCD instanton-induced events is observed. Upper limits on the cross section for instanton-induced processes between 1.5 and 6 pb, at 95\% confidence level, are obtained depending on the kinematic domain in which instantons could be produced. Compared to earlier publications, the limits are improved by an order of magnitude and for the first time are challenging predictions.",

author = "V. Andreev and A. Baghdasaryan and K. Begzsuren and A. Belousov and A. Bolz and V. Boudry and G. Brandt and V. Brisson and D. Britzger and A. Buniatyan and A. Bylinkin and L. Bystritskaya and Campbell, \{A. J.\} and \{Cantun Avila\}, \{K. B.\} and K. Cerny and V. Chekelian and Contreras, \{J. G.\} and J. Cvach and Dainton, \{J. B.\} and K. Daum and C. Diaconu and M. Dobre and V. Dodonov and G. Eckerlin and S. Egli and E. Elsen and L. Favart and A. Fedotov and J. Feltesse and J. Ferencei and M. Fleischer and A. Fomenko and E. Gabathuler and J. Gayler and S. Ghazaryan and L. Goerlich and N. Gogitidze and M. Gouzevitch and C. Grab and A. Grebenyuk and T. Greenshaw and G. Grindhammer and D. Haidt and Henderson, \{R. C.W.\} and J. Hladkỳ and D. Hoffmann and R. Horisberger and T. Hreus and F. Huber and M. Jacquet and X. Janssen and H. Jung and M. Kapichine and J. Katzy and C. Kiesling and M. Klein and C. Kleinwort and R. Kogler and P. Kostka and J. Kretzschmar and D. Kr{\"u}cker and K. Kr{\"u}ger and Landon, \{M. P.J.\} and W. Lange and P. Laycock and A. Lebedev and S. Levonian and K. Lipka and B. List and J. List and B. Lobodzinski and E. Malinovski and Martyn, \{H. U.\} and Maxfield, \{S. J.\} and A. Mehta and Meyer, \{A. B.\} and H. Meyer and J. Meyer and S. Mikocki and A. Morozov and K. M{\"u}ller and Th Naumann and Newman, \{P. R.\} and C. Niebuhr and G. Nowak and Olsson, \{J. E.\} and D. Ozerov and C. Pascaud and Patel, \{G. D.\} and E. Perez and A. Petrukhin and I. Picuric and H. Pirumov and D. Pitzl and R. Pla{\v c}akytė and B. Pokorny and R. Polifka and V. Radescu and N. Raicevic and T. Ravdandorj and P. Reimer and E. Rizvi and P. Robmann and R. Roosen and A. Rostovtsev and M. Rotaru and S. Rusakov and D. {\v S}{\'a}lek and Sankey, \{D. P.C.\} and M. Sauter and E. Sauvan and S. Schmitt and L. Schoeffel and A. Sch{\"o}ning and F. Sefkow and S. Shushkevich and Y. Soloviev and P. Sopicki and D. South and V. Spaskov and A. Specka and M. Steder and B. Stella and U. Straumann and T. Sykora and Thompson, \{P. D.\} and D. Traynor and P. Tru{\"o}l and I. Tsakov and B. Tseepeldorj and J. Turnau and A. Valk{\'a}rov{\'a} and C. Vall{\'e}e and \{Van Mechelen\}, P. and Y. Vazdik and D. Wegener and E. W{\"u}nsch and J. {\v Z}{\'a}{\v c}ek and Z. Zhang and R. {\v Z}leb{\v c}{\'i}k and H. Zohrabyan and F. Zomer",

note = "Publisher Copyright: {\textcopyright} 2016, The Author(s).",

year = "2016",

month = jul,

day = "1",

doi = "10.1140/epjc/s10052-016-4194-6",

language = "English",

volume = "76",

journal = "European Physical Journal C",

issn = "1434-6044",

publisher = "Springer Nature",

number = "7",

}

Andreev, V, Baghdasaryan, A, Begzsuren, K, Belousov, A, Bolz, A, Boudry, V, Brandt, G, Brisson, V, Britzger, D, Buniatyan, A, Bylinkin, A, Bystritskaya, L, Campbell, AJ, Cantun Avila, KB, Cerny, K, Chekelian, V, Contreras, JG, Cvach, J, Dainton, JB, Daum, K, Diaconu, C, Dobre, M, Dodonov, V, Eckerlin, G, Egli, S, Elsen, E, Favart, L, Fedotov, A, Feltesse, J, Ferencei, J, Fleischer, M, Fomenko, A, Gabathuler, E, Gayler, J, Ghazaryan, S, Goerlich, L, Gogitidze, N, Gouzevitch, M, Grab, C, Grebenyuk, A, Greenshaw, T, Grindhammer, G, Haidt, D, Henderson, RCW, Hladkỳ, J, Hoffmann, D, Horisberger, R, Hreus, T, Huber, F, Jacquet, M, Janssen, X, Jung, H, Kapichine, M, Katzy, J, Kiesling, C, Klein, M, Kleinwort, C, Kogler, R, Kostka, P, Kretzschmar, J, Krücker, D, Krüger, K, Landon, MPJ, Lange, W, Laycock, P, Lebedev, A, Levonian, S, Lipka, K, List, B, List, J, Lobodzinski, B, Malinovski, E, Martyn, HU, Maxfield, SJ, Mehta, A, Meyer, AB, Meyer, H, Meyer, J, Mikocki, S, Morozov, A, Müller, K, Naumann, T, Newman, PR, Niebuhr, C, Nowak, G, Olsson, JE, Ozerov, D, Pascaud, C, Patel, GD, Perez, E, Petrukhin, A, Picuric, I, Pirumov, H, Pitzl, D, Plačakytė, R, Pokorny, B, Polifka, R, Radescu, V, Raicevic, N, Ravdandorj, T, Reimer, P, Rizvi, E, Robmann, P, Roosen, R, Rostovtsev, A, Rotaru, M, Rusakov, S, Šálek, D, Sankey, DPC, Sauter, M, Sauvan, E, Schmitt, S, Schoeffel, L, Schöning, A, Sefkow, F, Shushkevich, S, Soloviev, Y, Sopicki, P, South, D, Spaskov, V, Specka, A, Steder, M, Stella, B, Straumann, U, Sykora, T, Thompson, PD, Traynor, D, Truöl, P, Tsakov, I, Tseepeldorj, B, Turnau, J, Valkárová, A, Vallée, C, Van Mechelen, P, Vazdik, Y, Wegener, D, Wünsch, E, Žáček, J, Zhang, Z, Žlebčík, R, Zohrabyan, H & Zomer, F 2016, 'Search for QCD instanton-induced processes at HERA in the high- Q² domain: H1 Collaboration', European Physical Journal C, vol. 76, no. 7, 381. https://doi.org/10.1140/epjc/s10052-016-4194-6

TY - JOUR

T1 - Search for QCD instanton-induced processes at HERA in the high- Q2 domain

T2 - H1 Collaboration

AU - Andreev, V.

AU - Baghdasaryan, A.

AU - Begzsuren, K.

AU - Belousov, A.

AU - Bolz, A.

AU - Boudry, V.

AU - Brandt, G.

AU - Brisson, V.

AU - Britzger, D.

AU - Buniatyan, A.

AU - Bylinkin, A.

AU - Bystritskaya, L.

AU - Campbell, A. J.

AU - Cantun Avila, K. B.

AU - Cerny, K.

AU - Chekelian, V.

AU - Contreras, J. G.

AU - Cvach, J.

AU - Dainton, J. B.

AU - Daum, K.

AU - Diaconu, C.

AU - Dobre, M.

AU - Dodonov, V.

AU - Eckerlin, G.

AU - Egli, S.

AU - Elsen, E.

AU - Favart, L.

AU - Fedotov, A.

AU - Feltesse, J.

AU - Ferencei, J.

AU - Fleischer, M.

AU - Fomenko, A.

AU - Gabathuler, E.

AU - Gayler, J.

AU - Ghazaryan, S.

AU - Goerlich, L.

AU - Gogitidze, N.

AU - Gouzevitch, M.

AU - Grab, C.

AU - Grebenyuk, A.

AU - Greenshaw, T.

AU - Grindhammer, G.

AU - Haidt, D.

AU - Henderson, R. C.W.

AU - Hladkỳ, J.

AU - Hoffmann, D.

AU - Horisberger, R.

AU - Hreus, T.

AU - Huber, F.

AU - Jacquet, M.

AU - Janssen, X.

AU - Jung, H.

AU - Kapichine, M.

AU - Katzy, J.

AU - Kiesling, C.

AU - Klein, M.

AU - Kleinwort, C.

AU - Kogler, R.

AU - Kostka, P.

AU - Kretzschmar, J.

AU - Krücker, D.

AU - Krüger, K.

AU - Landon, M. P.J.

AU - Lange, W.

AU - Laycock, P.

AU - Lebedev, A.

AU - Levonian, S.

AU - Lipka, K.

AU - List, B.

AU - List, J.

AU - Lobodzinski, B.

AU - Malinovski, E.

AU - Martyn, H. U.

AU - Maxfield, S. J.

AU - Mehta, A.

AU - Meyer, A. B.

AU - Meyer, H.

AU - Meyer, J.

AU - Mikocki, S.

AU - Morozov, A.

AU - Müller, K.

AU - Naumann, Th

AU - Newman, P. R.

AU - Niebuhr, C.

AU - Nowak, G.

AU - Olsson, J. E.

AU - Ozerov, D.

AU - Pascaud, C.

AU - Patel, G. D.

AU - Perez, E.

AU - Petrukhin, A.

AU - Picuric, I.

AU - Pirumov, H.

AU - Pitzl, D.

AU - Plačakytė, R.

AU - Pokorny, B.

AU - Polifka, R.

AU - Radescu, V.

AU - Raicevic, N.

AU - Ravdandorj, T.

AU - Reimer, P.

AU - Rizvi, E.

AU - Robmann, P.

AU - Roosen, R.

AU - Rostovtsev, A.

AU - Rotaru, M.

AU - Rusakov, S.

AU - Šálek, D.

AU - Sankey, D. P.C.

AU - Sauter, M.

AU - Sauvan, E.

AU - Schmitt, S.

AU - Schoeffel, L.

AU - Schöning, A.

AU - Sefkow, F.

AU - Shushkevich, S.

AU - Soloviev, Y.

AU - Sopicki, P.

AU - South, D.

AU - Spaskov, V.

AU - Specka, A.

AU - Steder, M.

AU - Stella, B.

AU - Straumann, U.

AU - Sykora, T.

AU - Thompson, P. D.

AU - Traynor, D.

AU - Truöl, P.

AU - Tsakov, I.

AU - Tseepeldorj, B.

AU - Turnau, J.

AU - Valkárová, A.

AU - Vallée, C.

AU - Van Mechelen, P.

AU - Vazdik, Y.

AU - Wegener, D.

AU - Wünsch, E.

AU - Žáček, J.

AU - Zhang, Z.

AU - Žlebčík, R.

AU - Zohrabyan, H.

AU - Zomer, F.

PY - 2016/7/1

Y1 - 2016/7/1

N2 - Signals of QCD instanton-induced processes are searched for in neutral current deep-inelastic scattering at the electron-proton collider HERA in the kinematic region defined by the Bjorken-scaling variable x> 10 - 3, the inelasticity 0.2 < y< 0.7 and the photon virtuality 150 < Q2< 15000 GeV2. The search is performed using H1 data corresponding to an integrated luminosity of 351 pb- 1. No evidence for the production of QCD instanton-induced events is observed. Upper limits on the cross section for instanton-induced processes between 1.5 and 6 pb, at 95% confidence level, are obtained depending on the kinematic domain in which instantons could be produced. Compared to earlier publications, the limits are improved by an order of magnitude and for the first time are challenging predictions.

AB - Signals of QCD instanton-induced processes are searched for in neutral current deep-inelastic scattering at the electron-proton collider HERA in the kinematic region defined by the Bjorken-scaling variable x> 10 - 3, the inelasticity 0.2 < y< 0.7 and the photon virtuality 150 < Q2< 15000 GeV2. The search is performed using H1 data corresponding to an integrated luminosity of 351 pb- 1. No evidence for the production of QCD instanton-induced events is observed. Upper limits on the cross section for instanton-induced processes between 1.5 and 6 pb, at 95% confidence level, are obtained depending on the kinematic domain in which instantons could be produced. Compared to earlier publications, the limits are improved by an order of magnitude and for the first time are challenging predictions.

U2 - 10.1140/epjc/s10052-016-4194-6

DO - 10.1140/epjc/s10052-016-4194-6

M3 - Article

AN - SCOPUS:84978288352

SN - 1434-6044

VL - 76

JO - European Physical Journal C

JF - European Physical Journal C

IS - 7

M1 - 381

ER -

Search for QCD instanton-induced processes at HERA in the high- Q2 domain: H1 Collaboration

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Search for QCD instanton-induced processes at HERA in the high- Q² domain: H1 Collaboration