Measurement of inclusive cross sections at high at and 252 GeV and of the longitudinal proton structure function at HERA

V. Andreev; A. Baghdasaryan; S. Baghdasaryan; K. Begzsuren; A. Belousov; P. Belov; V. Boudry; G. Bradt; M. Brinkmann; V. Brisson; D. Britzger; A. Buniatyan; A. Bylinkin; L. Bystritskaya; A. J. Campbell; K. B. Cantun Avila; F. Ceccopieri; K. Cerny; V. Chekelian; J. G. Contreras; J. B. Dainton; K. Daum; E. A. De Wolf; C. Diaconu; M. Dobre; V. Dodonov; A. Dossanov; A. Dubak; G. Eckerlin; S. Egli; E. Elsen; L. Favart; A. Fedotov; J. Feltesse; J. Ferencei; M. Fleischer; A. Fomenko; E. Gabathuler; J. Gayler; S. Ghazaryan; A. Glazov; L. Goerlich; N. Gogitidze; M. Gouzevitch; C. Grab; A. Grebenyuk; T. Greenshaw; G. Grindhammer; S. Habib; D. Haidt; R. C. W. Henderson; M. Herbst; M. Hildebrandt; J. Hladkỳ; D. Hoffmann; R. Horisberger; T. Hreus; F. Huber; M. Jacquet; X. Janssen; A. W. Jung; H. Jung; M. Kapichine; C. Kiesling; M. Klein; C. Kleinwort; R. Kogler; P. Kostka; J. Kretzschmar; K. Krüger; M. P. J. Landon; W. Lange; P. Laycock; A. Lebedev; S. Levonian; K. Lipka; B. List; J. List; B. Lobodzinski; V. Lubimov; 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; K. Nowak; B. Olivier; J. E. Olsson; D. Ozerov; P. Pahl; 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; A. Raspereza; 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; H.-C. Schultz-Coulon; 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/s10052-014-2814-6

2024 Impact factor 4.8

Particles and Fields

Open Access

Eur. Phys. J. C (2014) 74: 2814
https://doi.org/10.1140/epjc/s10052-014-2814-6

Regular Article - Experimental Physics

Measurement of inclusive cross sections at high ${{Q}^{2}}$ at ${\sqrt{s}}=225$ and 252 GeV and of the longitudinal proton structure function ${{F}_{{L}}}$ at HERA

H1 Collaboration
V. Andreev²¹, A. Baghdasaryan³³, S. Baghdasaryan³³, K. Begzsuren³⁰, A. Belousov²¹, P. Belov¹⁰, V. Boudry²⁴, G. Bradt³⁷, M. Brinkmann¹⁰, V. Brisson²³, D. Britzger¹⁰, A. Buniatyan¹², A. Bylinkin²⁰, L. Bystritskaya²⁰, A. J. Campbell¹⁰, K. B. Cantun Avila¹⁹, F. Ceccopieri³, K. Cerny²⁷, V. Chekelian²², J. G. Contreras¹⁹, J. B. Dainton¹⁶, K. Daum³²^*, E. A. De Wolf³, C. Diaconu¹⁸, M. Dobre⁴, V. Dodonov¹⁰, A. Dossanov¹¹^,22, A. Dubak²²^,25, G. Eckerlin¹⁰, S. Egli³¹, E. Elsen¹⁰, L. Favart³, A. Fedotov²⁰, J. Feltesse⁹, J. Ferencei¹⁴, M. Fleischer¹⁰, A. Fomenko²¹, E. Gabathuler¹⁶, J. Gayler¹⁰, S. Ghazaryan¹⁰, A. Glazov¹⁰, L. Goerlich⁶, N. Gogitidze²¹, M. Gouzevitch¹⁰, C. Grab³⁵, A. Grebenyuk¹⁰, T. Greenshaw¹⁶, G. Grindhammer²², S. Habib¹⁰, D. Haidt¹⁰, R. C. W. Henderson¹⁵, M. Herbst¹³, M. Hildebrandt³¹, J. Hladkỳ²⁶, D. Hoffmann¹⁸, R. Horisberger³¹, T. Hreus³, F. Huber¹², M. Jacquet²³, X. Janssen³, A. W. Jung¹³, H. Jung³^,10, M. Kapichine⁸, C. Kiesling²², M. Klein¹⁶, C. Kleinwort¹⁰, R. Kogler¹¹, P. Kostka³⁴, J. Kretzschmar¹⁶, K. Krüger¹⁰, M. P. J. Landon¹⁷, W. Lange³⁴, P. Laycock¹⁶, A. Lebedev²¹, S. Levonian¹⁰, K. Lipka¹⁰, B. List¹⁰, J. List¹⁰, B. Lobodzinski¹⁰, V. Lubimov²⁰, E. Malinovski²¹, H.-U. Martyn¹, S. J. Maxfield¹⁶, A. Mehta¹⁶, A. B. Meyer¹⁰, H. Meyer³², J. Meyer¹⁰, S. Mikocki⁶, A. Morozov⁸, K. Müller³⁶, Th. Naumann³⁴, P. R. Newman², C. Niebuhr¹⁰, G. Nowak⁶, K. Nowak¹¹, B. Olivier²², J. E. Olsson¹⁰, D. Ozerov¹⁰, P. Pahl¹⁰, C. Pascaud²³, G. D. Patel¹⁶, E. Perez⁹, A. Petrukhin¹⁰, I. Picuric²⁵, H. Pirumov¹⁰, D. Pitzl¹⁰, R. Plačakytė¹⁰, B. Pokorny²⁷, R. Polifka²⁷, V. Radescu¹⁰, N. Raicevic²⁵, A. Raspereza¹⁰, T. Ravdandorj³⁰, P. Reimer²⁶, E. Rizvi¹⁷, P. Robmann³⁶, R. Roosen³, A. Rostovtsev²⁰, M. Rotaru⁴, S. Rusakov²¹, D. Šálek²⁷, D. P. C. Sankey⁵, M. Sauter¹², E. Sauvan¹⁸, S. Schmitt¹⁰, L. Schoeffel⁹, A. Schöning¹², H.-C. Schultz-Coulon¹³, F. Sefkow¹⁰, S. Shushkevich¹⁰, Y. Soloviev¹⁰^,21, P. Sopicki⁶, D. South¹⁰, V. Spaskov⁸, A. Specka²⁴, M. Steder¹⁰, B. Stella²⁸, U. Straumann³⁶, T. Sykora³^,27, P. D. Thompson², D. Traynor¹⁷, P. Truöl³⁶, I. Tsakov²⁹, B. Tseepeldorj³⁰, J. Turnau⁶, A. Valkárová²⁷, C. Vallée¹⁸, P. Van Mechelen³, Y. Vazdik²¹, D. Wegener⁷, E. Wünsch¹⁰, J. Žáček²⁷, Z. Zhang²³, R. Žlebčík²⁷, H. Zohrabyan³³ and F. Zomer²³

¹ I. Physikalisches Institut der RWTH, Aachen, Germany
² School of Physics and Astronomy, University of Birmingham, Birmingham, UK
³ Inter-University Institute for High Energies ULB-VUB, Brussels and Universiteit Antwerpen, Antwerp, Belgium
⁴ National Institute for Physics and Nuclear Engineering (NIPNE), Bucharest, Romania
⁵ STFC, Rutherford Appleton Laboratory, Didcot, Oxfordshire, UK
⁶ Institute for Nuclear Physics, Cracow, Poland
⁷ Institut für Physik, TU Dortmund, Dortmund, Germany
⁸ Joint Institute for Nuclear Research, Dubna, Russia
⁹ CEA, DSM/Irfu, CE-Saclay, Gif-sur-Yvette, France
¹⁰ DESY, Hamburg, Germany
¹¹ Institut für Experimentalphysik, Universität Hamburg, Hamburg, Germany
¹² Physikalisches Institut, Universität Heidelberg, Heidelberg, Germany
¹³ Kirchhoff-Institut für Physik, Universität Heidelberg, Heidelberg, Germany
¹⁴ Institute of Experimental Physics, Slovak Academy of Sciences, Kosice, Slovak Republic
¹⁵ Department of Physics, University of Lancaster, Lancaster, UK
¹⁶ Department of Physics, University of Liverpool, Liverpool, UK
¹⁷ School of Physics and Astronomy, Queen Mary, University of London, London, UK
¹⁸ CPPM, Aix-Marseille Univ, CNRS/IN2P3, 13288 , Marseille, France
¹⁹ Departamento de Fisica Aplicada, CINVESTAV, Mérida, Yucatán, Mexico
²⁰ Institute for Theoretical and Experimental Physics, Moscow, Russia
²¹ Lebedev Physical Institute, Moscow, Russia
²² Max-Planck-Institut für Physik, Munich, Germany
²³ LAL, Université Paris-Sud, CNRS/IN2P3, Orsay, France
²⁴ LLR, Ecole Polytechnique, CNRS/IN2P3, Palaiseau, France
²⁵ Faculty of Science, University of Montenegro, Podgorica, Montenegro
²⁶ Institute of Physics, Academy of Sciences of the Czech Republic, Prague, Czech Republic
²⁷ Faculty of Mathematics and Physics, Charles University, Prague, Czech Republic
²⁸ Dipartimento di Fisica, Università di Roma Tre and INFN Roma 3, Rome, Italy
²⁹ Institute for Nuclear Research and Nuclear Energy, Sofia, Bulgaria
³⁰ Institute of Physics and Technology of the Mongolian Academy of Sciences, Ulaanbaatar, Mongolia
³¹ Paul Scherrer Institut, Villigen, Switzerland
³² Fachbereich C, Universität Wuppertal, Wuppertal, Germany
³³ Yerevan Physics Institute, Yerevan, Armenia
³⁴ DESY, Zeuthen, Germany
³⁵ Institut für Teilchenphysik, ETH, Zurich, Switzerland
³⁶ Physik-Institut der Universität Zürich, Zurich, Switzerland
³⁷ Department of Physics, Oxford University, Oxford, UK

^* e-mail: daum@mail.desy.de

Received: 17 December 2013
Accepted: 26 February 2014
Published online: 8 April 2014

Abstract

Inclusive $$ep$$ double differential cross sections for neutral current deep inelastic scattering are measured with the H1 detector at HERA. The data were taken with a lepton beam energy of $$27.6$$ GeV and two proton beam energies of $$E_p=460$$ and 575 GeV corresponding to centre-of-mass energies of 225 and 252 GeV, respectively. The measurements cover the region of $6.5\times 10^{-4} \le x \le 0.65$ for $35\le Q^2 \le 800$ GeV $$^2$$ up to $$y=0.85$$ . The measurements are used together with previously published H1 data at $$E_p=920$$ GeV and lower $$Q^2$$ data at $$E_p=460$$ , $$575$$ and $$920$$ GeV to extract the longitudinal proton structure function $$F_L$$ in the region $1.5\le Q^2 \le 800$ GeV $$^2$$ .