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1. Erratum to: Measurement of jet production cross sections in deep-inelastic ep scattering at HERA

Author: Karel Cerny, J. E. Olsson, Th. Naumann, Roman Kogler, P. Kostka, E. Gabathuler, Benno List, Katja Krüger, K. Daum, Natasa Raicevic, J. Feltesse, H. U. Martyn, Matthias Klein, Wolfgang Lange, C. Pascaud, Vincent Boudry, J. Žáček, J. Gayler, C. Vallée, A. Lebedev, Jozef Ferencei, A. N. Morozov, F. Huber, K. Begzsuren, I. Tsakov, D. Ozerov, T. Greenshaw, D. Haidt, Paul Newman, Claus Kleinwort, M. Jacquet, E. E. Elsen, A. Baghdasaryan, A. Rostovtsev, U. Straumann, Paul Laycock, V. Dodonov, B. Stella, A. Buniatyan, Peter Robmann, E. Malinovski, Roland Horisberger, Emmanuel Sauvan, Tomas Hreus, A. Valkárová, Emmanuelle Perez, K. B. Cantun Avila, Jean-Arcady Meyer, G. Grindhammer, C. Kiesling, D. P. C. Sankey, R. Roosen, Fabian Zomer, Z. P. Zhang, S. Shushkevich, A. J. Campbell, T. Ravdandorj, C. Niebuhr, E. Wünsch, Monica Dobre, Daniel Britzger, David South, P. E. Reimer, V. Andreev, R. C. W. Henderson, S. Egli, Tomas Sykora, M. Sauter, V. Chekelian, Y. Soloviev, D. Wegener, P. Van Mechelen, E. Rizvi, G. D. Patel, A. V. Fedotov, Hannes Jung, Grzegorz Nowak, Y. Vazdik, Katerina Lipka, A. Grebenyuk, R. Žlebčík, B. Lobodzinski, A. Specka, Voica Radescu, M. P. J. Landon, Alexander Bylinkin, Dirk L. Hoffmann, M. Steder, Christoph Grab, M. Kapichine, Jenny List, Arthur Eugen Bolz, L. Bystritskaya, Marina Rotaru, P. D. Thompson, H. Zohrabyan, S. Mikocki, S. Ghazaryan, Judith Katzy, Dirk Krücker, Laurent Schoeffel, B. Tseepeldorj, V. Brisson, Richard Polifka, H. J. Meyer, A.S. Belousov, P. Sopicki, P. Truöl, J. Cvach, Steffen Schmitt, K. Müller, Stephen Maxfield, N. Gogitidze, V. Spaskov, Daniel Pitzl, Jan Kretzschmar, Ankita Mehta, Cristinel Diaconu, S. Levonian, A. B. Meyer, Maxime Gouzevitch, M. Fleischer, Gerhard Brandt, F. Sefkow, Xavier Janssen, A. Petrukhin, I. Picuric, Guenter Eckerlin, André Schöning, D. Salek, L. Goerlich, R. Plačakytė, J. G. Contreras, A. M. Fomenko, J. Hladkỳ, Laurent Favart, J. B. Dainton, D. Traynor, and H. Pirumov
Subjects: Physics, Nuclear physics, Quantum chromodynamics, Jet (fluid), Physics and Astronomy (miscellaneous), Scattering, HERA, Table (information), Engineering (miscellaneous)
Abstract: The measurement of the jet cross sections by the H1 collaboration had been compared to various predictions including the next-to-next-to-leading order (NNLO) QCD calculations which are corrected in this erratum for an implementation error in one of the components of the NNLO calculations. The jet data and the other predictions remain unchanged. Eight figures, one table and conclusions are adapted accordingly, exhibiting even better agreement between the corrected NNLO predictions and the jet data.
Published: 2021

2. Measurement of charged particle multiplicity distributions in DIS at HERA and its implication to entanglement entropy of partons

Author: T. Greenshaw, T. Ravdandorj, T. Ullrich, V. Spaskov, K. Daum, Richard Polifka, A. Baghdasaryan, B. A. Schmookler, Katerina Lipka, A. Rostovtsev, S. Park, Emmanuelle Perez, Tomas Sykora, M. Sauter, Cristinel Diaconu, P. Sopicki, Peter Robmann, H. J. Meyer, David South, Steffen Schmitt, B. Stella, D. P. C. Sankey, C. Niebuhr, Daniel Pitzl, Th. Naumann, S. Egli, Paul Thompson, J. E. Olsson, R. Roosen, Y. Soloviev, Dirk Krücker, S. Shushkevich, V. Chekelian, Austin Baty, A. V. Fedotov, A. B. Meyer, Voica Radescu, B. Lobodzinski, Natasa Raicevic, J. Feltesse, Christoph Grab, M. Fleischer, D. Ozerov, J. Zhang, Arthur Eugen Bolz, D. Traynor, Vincent Boudry, A. N. Morozov, Jan Kretzschmar, Grzegorz Nowak, P. Kostka, L. Bystritskaya, P. Van Mechelen, S. Levonian, K. Müller, A. Petrukhin, C. Gal, Laurent Schoeffel, B. Tseepeldorj, R. C. W. Henderson, Andreas Werner Jung, D. Wegener, Daniel Andreas Britzger, Jean-Arcady Meyer, Judith Katzy, A.S. Belousov, M. Steder, K. Begzsuren, R. Žlebčík, P. Truöl, A. Specka, H. Zohrabyan, Z. P. Zhang, Maxime Gouzevitch, J. Žáček, F. Sefkow, F. Huber, P. E. Reimer, M. M. Mondal, Ankita Mehta, Roland Horisberger, A. Valkárová, A. Buniatyan, J. Cvach, Wolfgang Lange, Gerhard Brandt, A. M. Fomenko, J. Gayler, Tomas Hreus, Benno List, Xavier Janssen, S. Mikocki, Stephen Maxfield, Wei Li, Fabian Zomer, Katja Krüger, C. Kiesling, V. Andreev, N. Gogitidze, A. J. Campbell, J. B. Dainton, Matthieu Klein, J. G. Contreras, Dirk L. Hoffmann, I. Picuric, Guenter Eckerlin, André Schöning, J. Hladkỳ, L. Goerlich, A. Deshpande, E. Elsen, A. Grebenyuk, Karel Cerny, Laurent Favart, M. Jacquet, Roman Kogler, Paul Laycock, E. Malinovski, Emmanuel Sauvan, G. Grindhammer, M. P. J. Landon, Paul Newman, Hannes Jung, Claus Kleinwort, C. Vallée, U. Straumann, H. U. Martyn, M. Kapichine, Z. Tu, K. B. C. Avila, C. Pascaud, A. Lebedev, D. Haidt, Jenny List, Marina Rotaru, E. Wünsch, Z. Chen, E. Rizvi, G. D. Patel, and H1 Collaboration
Subjects: Physics, Particle physics, Physics and Astronomy (miscellaneous), 010308 nuclear & particles physics, Monte Carlo method, Hadron, Multiplicity (mathematics), Parton, HERA, Deep inelastic scattering, 01 natural sciences, Charged particle, Pseudorapidity, 0103 physical sciences, High Energy Physics::Experiment, Nuclear Experiment, 010306 general physics, Engineering (miscellaneous)
Abstract: Charged particle multiplicity distributions in positron-proton deep inelastic scattering at a centre-of-mass energy $$\sqrt{s}=319$$ s = 319 GeV are measured. The data are collected with the H1 detector at HERA corresponding to an integrated luminosity of 136 pb$$^{-1}$$ - 1 . Charged particle multiplicities are measured as a function of photon virtuality $$Q^2$$ Q 2 , inelasticity y and pseudorapidity $$\eta $$ η in the laboratory and the hadronic centre-of-mass frames. Predictions from different Monte Carlo models are compared to the data. The first and second moments of the multiplicity distributions are determined and the KNO scaling behaviour is investigated. The multiplicity distributions as a function of $$Q^2$$ Q 2 and the Bjorken variable $$x_{\mathrm{bj}}$$ x bj are converted to the hadron entropy $$S_{\mathrm{hadron}}$$ S hadron , and predictions from a quantum entanglement model are tested.
Published: 2021

3. Measurement of exclusive $${\varvec{{{{\pi ^+\pi ^-}}}}}$$ and $${\varvec{{{{\rho ^0}}}}}$$ meson photoproduction at HERA

Author: J. Žáček, Austin Baty, F. Huber, Steffen Schmitt, A. B. Meyer, M. Fleischer, D. Traynor, Daniel Andreas Britzger, Tomas Hreus, F. Sefkow, Maxime Gouzevitch, Paul Laycock, E. Malinovski, Emmanuel Sauvan, G. Grindhammer, K. Müller, C. Niebuhr, A.S. Belousov, P. Truöl, S. Shushkevich, Stephen Maxfield, S. Egli, J. E. Olsson, Gerhard Brandt, Y. Soloviev, K. Daum, N. Gogitidze, P. Van Mechelen, A. M. Fomenko, Xavier Janssen, A. Petrukhin, R. C. W. Henderson, R. Roosen, Voica Radescu, Christoph Grab, Karel Cerny, M. Jacquet, Richard Polifka, E. Elsen, A. Grebenyuk, Roman Kogler, A. Buniatyan, Natasa Raicevic, Andreas Werner Jung, I. Picuric, Guenter Eckerlin, J. Feltesse, André Schöning, S. Park, L. Goerlich, Vincent Boudry, Emmanuelle Perez, Wei Li, V. Andreev, P. Sopicki, Arthur Eugen Bolz, M. P. J. Landon, Grzegorz Nowak, A. Deshpande, Jenny List, A. V. Fedotov, J. Cvach, K. B. Cantun Avila, S. Levonian, A. N. Morozov, Ankita Mehta, J. B. Dainton, A. Baghdasaryan, A. Rostovtsev, Judith Katzy, C. Kiesling, A. Specka, P. Kostka, B. A. Schmookler, Marina Rotaru, A. J. Campbell, Dirk L. Hoffmann, L. Bystritskaya, J. Hladkỳ, M. Kapichine, David South, H. Zohrabyan, Paul Newman, Th. Naumann, E. Wünsch, B. Stella, Claus Kleinwort, Cristinel Diaconu, H. U. Martyn, Matthias Klein, K. Begzsuren, M. Steder, Laurent Favart, Daniel Pitzl, Z. Chen, U. Straumann, P. D. Thompson, Benno List, E. Rizvi, G. D. Patel, V. Spaskov, Katja Krüger, C. Pascaud, J. Zhang, M. M. Mondal, C. Vallée, A. Lebedev, C. Gal, Laurent Schoeffel, Z. Tu, B. Tseepeldorj, Jan Kretzschmar, D. Haidt, Katerina Lipka, D. P. C. Sankey, R. Žlebčík, T. Greenshaw, Roland Horisberger, V. Chekelian, A. Valkárová, Fabian Zomer, T. Ravdandorj, B. Lobodzinski, H. J. Meyer, J. G. Contreras, Tomas Sykora, M. Sauter, Hannes Jung, D. Ozerov, Dirk Krücker, D. Wegener, P. E. Reimer, Jean-Arcady Meyer, Z. P. Zhang, S. Mikocki, Peter Robmann, Wolfgang Lange, and J. Gayler
Subjects: Physics, Particle physics, Physics and Astronomy (miscellaneous), Meson, 010308 nuclear & particles physics, Scattering, Hadron, HERA, 01 natural sciences, Vertex (geometry), Pion, 0103 physical sciences, Pi, Invariant mass, 010306 general physics, Engineering (miscellaneous)
Abstract: Exclusive photoproduction of $${{\rho ^0}} (770)$$ ρ 0 ( 770 ) mesons is studied using the H1 detector at the ep collider HERA. A sample of about 900,000 events is used to measure single- and double-differential cross sections for the reaction $$\gamma p \rightarrow \pi ^{+}\pi ^{-}Y$$ γ p → π + π - Y . Reactions where the proton stays intact ($${{{m_Y}} {=}m_p}$$ m Y = m p ) are statistically separated from those where the proton dissociates to a low-mass hadronic system ($$m_p{ m p < m Y < 10 GeV ). The double-differential cross sections are measured as a function of the invariant mass $$m_{\pi \pi }$$ m π π of the decay pions and the squared 4-momentum transfer t at the proton vertex. The measurements are presented in various bins of the photon–proton collision energy $${{W_{\gamma p}}} $$ W γ p . The phase space restrictions are $$0.5\le m_{\pi \pi } \le 2.2~{{\text {GeV}}} $$ 0.5 ≤ m π π ≤ 2.2 GeV , $$\vert t\vert \le 1.5~{{\text {GeV}^2}} $$ | t | ≤ 1.5 GeV 2 , and $$20 \le W_{\gamma p} \le 80~{{\text {GeV}}} $$ 20 ≤ W γ p ≤ 80 GeV . Cross section measurements are presented for both elastic and proton-dissociative scattering. The observed cross section dependencies are described by analytic functions. Parametrising the $${m_{\pi \pi }}$$ m π π dependence with resonant and non-resonant contributions added at the amplitude level leads to a measurement of the $${{\rho ^0}} (770)$$ ρ 0 ( 770 ) meson mass and width at $$m_\rho = 770.8{}^{+2.6}_{-2.7}~({\text {tot.}})~{{\text {MeV}}} $$ m ρ = 770.8 - 2.7 + 2.6 ( tot. ) MeV and $$\Gamma _\rho = 151.3 {}^{+2.7}_{-3.6}~({\text {tot.}})~{{\text {MeV}}} $$ Γ ρ = 151.3 - 3.6 + 2.7 ( tot. ) MeV , respectively. The model is used to extract the $${{\rho ^0}} (770)$$ ρ 0 ( 770 ) contribution to the $$\pi ^{+}\pi ^{-}$$ π + π - cross sections and measure it as a function of t and $${W_{\gamma p}}$$ W γ p . In a Regge asymptotic limit in which one Regge trajectory $$\alpha (t)$$ α ( t ) dominates, the intercept $$\alpha (t{=}0) = 1.0654\ {}^{+0.0098}_{-0.0067}~({\text {tot.}})$$ α ( t = 0 ) = 1.0654 - 0.0067 + 0.0098 ( tot. ) and the slope $$\alpha ^\prime (t{=}0) = 0.233 {}^{+0.067 }_{-0.074 }~({\text {tot.}}) ~{{\text {GeV}^{-2}}} $$ α ′ ( t = 0 ) = 0.233 - 0.074 + 0.067 ( tot. ) GeV - 2 of the t dependence are extracted for the case $$m_Y{=}m_p$$ m Y = m p .
Published: 2020

4. Determination of electroweak parameters in polarised deep-inelastic scattering at HERA

Author: Paul Laycock, J. B. Dainton, Max Klein, D. Traynor, E. Malinovski, Emmanuel Sauvan, P. E. Reimer, G. Grindhammer, Z. P. Zhang, Murrough Landon, Roland Horisberger, A. Baghdasaryan, A. Rostovtsev, A. Valkárová, P. Van Mechelen, C. Niebuhr, S. Egli, Y. Soloviev, P. D. Thompson, K. Daum, D. Wegener, H. J. Meyer, A. B. Meyer, A. V. Fedotov, Voica Radescu, Christoph Grab, A.S. Belousov, M. Fleischer, R. Žlebčík, P. Truöl, K. Begzsuren, R. C. W. Henderson, Andreas Werner Jung, Judith Katzy, Wolfgang Lange, I. Tsakov, Katerina Lipka, A. Specka, F. Sefkow, D. Salek, J. Gayler, P. Kostka, J. G. Contreras, Grzegorz Nowak, B. Stella, L. Bystritskaya, Laurent Schoeffel, B. Tseepeldorj, S. Mikocki, J. Hladkỳ, Alexander Bylinkin, E. Wünsch, D. P. C. Sankey, S. Levonian, Laurent Favart, M. Jacquet, Tomas Sykora, M. Sauter, H. Zohrabyan, J-P. Meyer, E. Elsen, A. Grebenyuk, Arthur Eugen Bolz, I. Picuric, Guenter Eckerlin, Daniel Andreas Britzger, André Schöning, L. Goerlich, V. Chekelian, Emmanuelle Perez, Peter Robmann, V. Brisson, H. U. Martyn, S. Shushkevich, Dirk Krücker, Maxime Gouzevitch, G. D. Patel, B. Lobodzinski, R. Roosen, A. M. Fomenko, Monica Dobre, V. Andreev, P. Sopicki, A. Buniatyan, K. B. Cantun Avila, C. Kiesling, Gerhard Brandt, A. J. Campbell, C. Pascaud, Benno List, A. Lebedev, Th. Naumann, Katja Krüger, D. Ozerov, Karel Cerny, Dirk L. Hoffmann, Xavier Janssen, D. Haidt, Roman Kogler, A. Petrukhin, Paul Newman, Eram Rizvi, Y. Vazdik, Claus Kleinwort, Hubert Spiesberger, U. Straumann, David South, J. Žáček, F. Huber, Tomas Hreus, Jenny List, Marina Rotaru, Steffen Schmitt, K. Müller, Stephen Maxfield, Andrew Mehta, N. Gogitidze, J. Cvach, Fabian Zomer, Hannes Jung, C. Vallée, M. Kapichine, J. E. Olsson, Natasa Raicevic, J. Feltesse, Vincent Boudry, T. Greenshaw, Cristinel Diaconu, A. N. Morozov, T. Ravdandorj, V. Spaskov, M. Steder, Richard Polifka, Daniel Pitzl, and Jan Kretzschmar
Subjects: Physics, Quantum chromodynamics, Particle physics, Physics and Astronomy (miscellaneous), Neutral current, 010308 nuclear & particles physics, High Energy Physics::Phenomenology, Electroweak interaction, HERA, Deep inelastic scattering, 01 natural sciences, Standard Model, 0103 physical sciences, High Energy Physics::Experiment, 010306 general physics, Engineering (miscellaneous), Charged current, Lepton
Abstract: The parameters of the electroweak theory are determined in a combined electroweak and QCD analysis using all deep-inelastic $e^+p$ and $e^-p$ neutral current and charged current scattering cross sections published by the H1 Collaboration, including data with longitudinally polarised lepton beams. Various fits to Standard Model parameters in the on-shell scheme are performed. The mass of the W boson is determined as $m_W=80.520\pm 0.115~\mathrm {GeV} $ . The axial-vector and vector couplings of the light quarks to the Z boson are also determined. Both results improve the precision of previous H1 determinations based on HERA-I data by about a factor of two. Possible scale dependence of the weak coupling parameters in both neutral and charged current interactions beyond the Standard Model is also studied. All results are found to be consistent with the Standard Model expectations.
Published: 2018

5. Search for QCD instanton-induced processes at HERA in the high- $$\pmb {Q^2}$$ Q 2 domain

Author: Jenny List, H. U. Martyn, Marina Rotaru, J. Hladkỳ, B. Pokorny, P. Kostka, P. E. Reimer, R. Plačakytė, Laurent Favart, A. M. Fomenko, V. Spaskov, Stephen Maxfield, E. Wünsch, C. Niebuhr, N. Gogitidze, Peter Robmann, S. Ghazaryan, S. Egli, R. C. W. Henderson, Grzegorz Nowak, E. Rizvi, G. D. Patel, J. Turnau, Y. Soloviev, D. Salek, David South, D. P. C. Sankey, K. Begzsuren, B. Stella, C. Pascaud, Stefan Schmitt, C. Vallée, A. Lebedev, A. Grebenyuk, A.S. Belousov, Sergey Rusakov, I. Tsakov, D. Haidt, P. Truöl, Daniel Britzger, J. G. Contreras, M. Jacquet, E. E. Elsen, Wolfgang Lange, J. Gayler, M. P. J. Landon, I. Picuric, Benno List, Katja Krüger, V. Dodonov, Guenter Eckerlin, André Schöning, L. Goerlich, V. Chekelian, D. Wegener, Voica Radescu, Christoph Grab, A. Specka, Paul Newman, Max Klein, D. Traynor, D. Ozerov, M. Kapichine, Emmanuelle Perez, P. Van Mechelen, P. Sopicki, T. Greenshaw, V. Brisson, J. Ferencei, Claus Kleinwort, T. Ravdandorj, R. Žlebčík, Jean-Arcady Meyer, Paul Laycock, S. Shushkevich, E. Malinovski, Emmanuel Sauvan, G. Grindhammer, H. Pirumov, B. Lobodzinski, Z. P. Zhang, A. Baghdasaryan, K. Daum, A. Rostovtsev, A. V. Fedotov, Judith Katzy, U. Straumann, Katerina Lipka, R. Roosen, P. D. Thompson, Fabian Zomer, L. Bystritskaya, Monica Dobre, H. J. Meyer, A. B. Meyer, J. B. Dainton, M. Fleischer, Hannes Jung, Laurent Schoeffel, B. Tseepeldorj, K. Müller, H. Zohrabyan, Richard Polifka, Tomas Sykora, M. Sauter, Karel Cerny, Roman Kogler, S. Mikocki, F. Sefkow, Dirk Krücker, J. Cvach, V. Andreev, Dirk L. Hoffmann, J. Žáček, F. Huber, Tomas Hreus, M. Steder, J. E. Olsson, Natasa Raicevic, J. Feltesse, Vincent Boudry, A. N. Morozov, Roland Horisberger, Maxime Gouzevitch, S. Levonian, Gerhard Brandt, Xavier Janssen, A. Petrukhin, A. Valkárová, A. Buniatyan, Ankita Mehta, K. B. Cantun Avila, C. Kiesling, Alexander Bylinkin, A. J. Campbell, Arthur Eugen Bolz, Cristinel Diaconu, Daniel Pitzl, Jan Kretzschmar, Y. Vazdik, Th. Naumann, and E. Gabathuler
Subjects: Physics, Quantum chromodynamics, Particle physics, Instanton, Luminosity (scattering theory), Physics and Astronomy (miscellaneous), Neutral current, 010308 nuclear & particles physics, High Energy Physics::Phenomenology, Elementary particle, HERA, Inelastic scattering, Deep inelastic scattering, 01 natural sciences, 0103 physical sciences, High Energy Physics::Experiment, 010306 general physics, Engineering (miscellaneous)
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 $150 < Q^2 < 15000$ GeV$^2$. 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 $1.5$~pb 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 theory predictions.
Published: 2016

6. Exclusive $$\rho ^0$$ ρ 0 meson photoproduction with a leading neutron at HERA

Author: Paul Newman, T. Greenshaw, Claus Kleinwort, J-P. Meyer, S. Shushkevich, J. Ferencei, T. Ravdandorj, U. Straumann, Daniel Pitzl, A. Buniatyan, Alexander Bylinkin, Peter Robmann, Wolfgang Lange, Maxime Gouzevitch, J. Gayler, Arthur Eugen Bolz, J. Žáček, F. Huber, Jan Kretzschmar, K. B. Cantun Avila, M. Jacquet, E. E. Elsen, Z. P. Zhang, H. U. Martyn, C. Kiesling, Roland Horisberger, A. Valkárová, A. V. Fedotov, Tomas Hreus, P. E. Reimer, A. J. Campbell, J. B. Dainton, M. Kapichine, S. Levonian, Paul Laycock, E. Malinovski, Emmanuel Sauvan, A. B. Meyer, V. Andreev, G. Grindhammer, Jenny List, Marina Rotaru, Tomas Sykora, M. Sauter, Emmanuelle Perez, Cristinel Diaconu, Gerhard Brandt, C. Pascaud, M. Fleischer, C. Vallée, A. Lebedev, D. Haidt, A. Baghdasaryan, A. Rostovtsev, L. Bystritskaya, Dirk L. Hoffmann, Xavier Janssen, P. D. Thompson, J. Hladkỳ, D. Wegener, V. Spaskov, V. Dodonov, Bogdan Povh, F. Sefkow, A. Petrukhin, Murrough Landon, H. Zohrabyan, J. Turnau, Fabian Zomer, E. Wünsch, Dave Sankey, Karel Cerny, R. Plačakytė, K. Begzsuren, E. Rizvi, G. D. Patel, Roman Kogler, C. Niebuhr, H. J. Meyer, A. M. Fomenko, I. Tsakov, S. Egli, A. Grebenyuk, S. Mikocki, Y. Soloviev, Benno List, P. Kostka, R. C. W. Henderson, Hannes Jung, Voica Radescu, Max Klein, Christoph Grab, D. Traynor, Katja Krüger, Daniel Britzger, D. Ozerov, Laurent Favart, P. Van Mechelen, H. Pirumov, A. Specka, I. Picuric, Guenter Eckerlin, K. Daum, André Schöning, L. Goerlich, Katerina Lipka, M. Steder, A.S. Belousov, Sergey Rusakov, P. Truöl, J. E. Olsson, V. Chekelian, B. Lobodzinski, Natasa Raicevic, J. Feltesse, Laurent Schoeffel, B. Tseepeldorj, Richard Polifka, Vincent Boudry, B. Pokorny, A. N. Morozov, David South, R. Žlebčík, D. Salek, J. G. Contreras, B. Stella, Stefan Schmitt, Y. Vazdik, Th. Naumann, E. Gabathuler, K. Müller, Stephen Maxfield, Andrew Mehta, N. Gogitidze, J. Cvach, R. Roosen, Monica Dobre, Grzegorz Nowak, P. Sopicki, V. Brisson, and S. Ghazaryan
Subjects: Physics, Particle physics, Physics and Astronomy (miscellaneous), Meson, 010308 nuclear & particles physics, Nuclear Theory, Hadron, Elementary particle, HERA, 01 natural sciences, 7. Clean energy, Nuclear physics, Baryon, Pion, 0103 physical sciences, High Energy Physics::Experiment, Neutron, Nuclear Experiment, 010306 general physics, Nucleon, Engineering (miscellaneous)
Abstract: A first measurement is presented of exclusive photoproduction of $$\rho ^0$$ mesons associated with leading neutrons at HERA. The data were taken with the H1 detector in the years 2006 and 2007 at a centre-of-mass energy of $$\sqrt{s}=319$$ GeV and correspond to an integrated luminosity of 1.16 pb $$^{-1}$$ . The $$\rho ^0$$ mesons with transverse momenta $$p_T0.35$$ , are detected in the Forward Neutron Calorimeter. The phase space of the measurement is defined by the photon virtuality $$Q^2 < 2$$ GeV $$^2$$ , the total energy of the photon–proton system $$20 < W_{\gamma p}< 100$$ GeV and the polar angle of the leading neutron $$\theta _n < 0.75$$ mrad. The cross section of the reaction $$\gamma p \rightarrow \rho ^0 n \pi ^+$$ is measured as a function of several variables. The data are interpreted in terms of a double peripheral process, involving pion exchange at the proton vertex followed by elastic photoproduction of a $$\rho ^0$$ meson on the virtual pion. In the framework of one-pion-exchange dominance the elastic cross section of photon-pion scattering, $$\sigma ^\mathrm{el}(\gamma \pi ^+ \rightarrow \rho ^0\pi ^+)$$ , is extracted. The value of this cross section indicates significant absorptive corrections for the exclusive reaction $$\gamma p \rightarrow \rho ^0 n \pi ^+$$ .
Published: 2016

7. Diffractive open charm production in deep-inelastic scattering and photoproduction at HERA

Author: S. Hussain, C. Grab, G. Thompson, H. Henschel, J.C. Bizot, G. Tsipolitis, Paul Laycock, E. Malinovski, Emmanuel Sauvan, G. Grindhammer, Judith Katzy, G. Cozzika, C. Schmitz, Hannes Jung, Alexander Zhokin, C. Vallée, W. Yan, Peter Robmann, A. M. Fomenko, E. Gabathuler, N. Loktionova, V. Jemanov, A. Hovhannisyan, Gero Flucke, M. Kapichine, M. Nozicka, H. Peng, I. Tsurin, G. Laštovička-Medin, B. Delcourt, D. Mladenov, Matthias Ulrich Mozer, Søren Schmidt, A. Baghdasaryan, A. Rostovtsev, A. Lebedev, A. Fedotov, Dusan Bruncko, M. Gouzevitch, K. B. Cantun Avila, S. Ginzburgskaya, C. Kiesling, A. De Roeck, F. Salvaire, E. Tzamariudaki, A. J. Campbell, D. Haidt, J. Feltesse, K. H. Hiller, R. C. W. Henderson, Laurent Schoeffel, Paul Newman, T. Zimmermann, A. Aktas, P. Baranov, B. Naroska, J. Cvach, M. Goettlich, D. Utkin, R.N. Shaw-West, A. Rimmer, C. Risler, C. Niebuhr, M. Fleischer, T. J. Sloan, Eram Rizvi, A. Dubak, P.J.W. Faulkner, G. Heinzelmann, A. Knutsson, Pavel Murin, K. Nowak, A.S. Belousov, T. Greenshaw, Sergey Rusakov, P. Truöl, Magnus Hansson, S. Egli, Y. Vazdik, B. List, M. Del Degan, V. Dodonov, Stefania Xella, S. Backovic, Th. D. Papadopoulou, M. Ibbotson, Y. Soloviev, Max Klein, G. Weber, C. Gwilliam, E. E. Elsen, U. Straumann, Thomas Naumann, Bogdan Povh, F. Sefkow, A. D.R. Vargas Trevino, J. Ferencei, Zuzana Rurikova, A. Astvatsatourov, Mila Pandurovic, K. Urban, M. Martisikova, Murrough Landon, A. Makankine, Erika Garutti, D. Wegener, Katerina Lipka, S. Ghazaryan, H. Lueders, G. Buschhorn, D. Ozerov, V. Tchoulakov, L. Goerlich, C. Wissing, Wolfgang Lange, V. Korbel, A. Specka, M. Sauter, E. Wünsch, R. Weber, Claus Kleinwort, P. A. Smirnov, M. Kraemer, Dave Sankey, S. M. Piec, Laurent Favart, M. Brinkmann, H. U. Martyn, J. Gayler, T. Anthonis, V. Efremenko, K. Müller, G. D. Patel, Matthew Beckingham, S. Gorbounov, T. Kluge, Stephen Maxfield, S. Mikocki, Biljana Antunović, G. Leibenguth, D.P. Johnson, T. Sykora, J. Stiewe, V. Chekelian, Anna Kropivnitskaya, E. Perez, Andrew Mehta, J. Bracinik, N. Gogitidze, R. Felst, I. Picuric, C. Pascaud, C. Werner, Guenter Eckerlin, André Schöning, J. V. Morris, Jenny List, A. W. Jung, M. Wessels, I. Sheviakov, P. E. Reimer, G. Herrera, Bradley Cox, A.J. Rahmat, A. Bunyatyan, A. Nikiforov, M. Jacquet, K. Krüger, R. Wolf, T. Frisson, Karel Cerny, J. Zálešák, P. Van Mechelen, L. Bystritskaya, V. Spaskov, S. Baudrand, K. Wacker, Ivan Smiljanic, I. Milcewicz-Mika, Anton Babaev, J. G. Contreras, A. Mohamed, P. Prideaux, A. Glazov, P. D. Thompson, V. Yeganov, H. Zohrabyan, A. Stoilov, Ll. Marti, I. Bozovic-Jelisavcic, L. Finke, R. Marshall, F. Moreau, S. J. Aplin, R. Plačakytė, Y.C. Zhu, S. Essenov, F. Zomer, K. Daum, V. Michels, J. B. Dainton, V. Andreev, V. Lendermann, A.-I. Lucaci-Timoce, G. Knies, Christian Helebrant, G. Franke, J. Žáček, Leif J. Jönsson, Benoit Roland, Hans-Christian Schultz-Coulon, T. Klimkovich, A. Falkewicz, Tomas Hreus, R. Eichler, F. Eisele, R. Oganezov, V. Cerny, B. Olivier, John A Coughlan, Grzegorz Nowak, A. Petrukhin, V. Brisson, E. Barrelet, T. Toll, E. A. De Wolf, Karlheinz Meier, R. Roosen, Y. de Boer, B. Stella, Stefan Schmitt, Vladimir Palichik, V. Lubimov, K. Nankov, L. N. Shtarkov, M.-O. Boenig, Zhen Zhang, Ricardo Lopez-Fernandez, S. Levonian, I. Panagoulias, M. Steder, S. Habib, Sakar Osman, D. Hoffmann, Andreas Meyer, Nicolas Berger, David South, A. Usik, J. Zimmermann, A. Eliseev, J. E. Olsson, A. Zhelezov, W. Bartel, J-P. Meyer, Malte Hildebrandt, F. W. Büsser, I. R. Kenyon, Natasa Raicevic, O. Behrendt, Vincent Boudry, S. Vinokurova, A. N. Morozov, P. Kostka, D. Perez-Astudillo, M. Gregori, J. Turnau, Adrian Perieanu, B. R. Grell, Gerhard Brandt, V. Volchinski, K. Begzsuren, H. Meyer, F. Tomasz, Xavier Janssen, I. Tsakov, T. N. Trinh, Roland Horisberger, A. Valkárová, K. Krastev, L. Lindfeld, D. Sunar, L. Lytkin, Cristinel Diaconu, Daniel Pitzl, D. Traynor, A. Asmone, F. Cassol-Brunner, M. Urban, Jan Kretzschmar, Andrej Liptaj, Pierre Marage, I. Glushkov, O. Behnke, Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de l'Accélérateur Linéaire (LAL), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire Leprince-Ringuet (LLR), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Département d'Astrophysique, de physique des Particules, de physique Nucléaire et de l'Instrumentation Associée (DAPNIA), Commissariat à l'énergie atomique et aux énergies alternatives (CEA), H1, (ukupan broj autora: 294), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), and Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)
Subjects: Physics, Quantum chromodynamics, Particle physics, Physics and Astronomy (miscellaneous), Meson, 010308 nuclear & particles physics, High Energy Physics::Phenomenology, Hadron, FOS: Physical sciences, Parton, HERA, Deep inelastic scattering, 01 natural sciences, High Energy Physics - Experiment, Charm quark, Nuclear physics, High Energy Physics - Experiment (hep-ex), 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], ddc:530, High Energy Physics::Experiment, Rapidity, Nuclear Experiment, 010306 general physics, Engineering (miscellaneous)
Abstract: Measurements are presented of diffractive open charm production at HERA. The event topology is given by ep -> eX Y where the system X contains at least one charmed hadron and is well separated by a large rapidity gap from a leading low-mass proton remnant system Y. Two analysis techniques are used for the cross section measurements. In the first, the charm quark is tagged by the reconstruction of a D*(2010) meson. This technique is used in deep-inelastic scattering (DIS) and photoproduction. In the second, a method based on the displacement of tracks from the primary vertex is used to measure the open charm contribution to the inclusive diffractive cross section in DIS. The measurements are compared with next-to-leading order QCD predictions based on diffractive parton density functions previously obtained from a QCD analysis of the inclusive diffractive cross section at H1. A good agreement is observed in the full kinematic regime, which supports the validity of QCD factorization for open charm production in diffractive DIS and photoproduction., 39 pages, 13 figures, 8 tables
Published: 2007

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

Author: K. Daum, Alexei Raspereza, V. Spaskov, Laurent Schoeffel, J. Feltesse, P. E. Reimer, T. Greenshaw, D. Traynor, Paul Laycock, P. Van Mechelen, J. Ferencei, E. Malinovski, Emmanuel Sauvan, T. Ravdandorj, Tomas Sykora, M. Sauter, H. Pirumov, G. Grindhammer, Richard Polifka, M. Kapichine, I. Picuric, Guenter Eckerlin, M. Herbst, André Schöning, Wolfgang Lange, J. B. Dainton, A. Baghdasaryan, D. Wegener, A. Rostovtsev, D. Salek, J. Gayler, M. Hildebrandt, Fabian Zomer, A. V. Fedotov, A. B. Meyer, M. Fleischer, S. Shushkevich, Jean-Arcady Meyer, J. G. Contreras, Z. P. Zhang, Hannes Jung, C. Niebuhr, E. A. De Wolf, R. Roosen, S. Habib, Alexander Bylinkin, S. Egli, L. Bystritskaya, F. Sefkow, S. Mikocki, D. Ozerov, H. Zohrabyan, Y. Soloviev, David South, R. Plačakytė, Katerina Lipka, Monica Dobre, P. Sopicki, Roland Horisberger, A. Valkárová, V. Lubimov, A. M. Fomenko, S. Baghdasaryan, J. Hladkỳ, B. Pokorny, Voica Radescu, Christoph Grab, Grzegorz Nowak, H-C. Schultz-Coulon, Paul Newman, A. Dossanov, A. Petrukhin, Claus Kleinwort, Daniel Britzger, Peter Robmann, Laurent Favart, U. Straumann, P. Kostka, Benno List, Katja Krüger, J. Turnau, R. C. W. Henderson, Maxime Gouzevitch, M. P. J. Landon, L. Goerlich, K. Begzsuren, D. P. C. Sankey, I. Tsakov, A. Specka, V. Brisson, Karel Cerny, Roman Kogler, A. Glazov, P. D. Thompson, H. U. Martyn, Matthias Klein, B. Lobodzinski, H. J. Meyer, Cristinel Diaconu, V. Chekelian, C. Pascaud, C. Vallée, A. Lebedev, S. Levonian, K. Nowak, D. Haidt, M. Brinkmann, Ankita Mehta, Daniel Pitzl, Xavier Janssen, Jan Kretzschmar, V. Dodonov, R. Žlebčík, E. Wünsch, B. Tseepeldorj, E. Rizvi, G. D. Patel, B. Stella, Jenny List, Marina Rotaru, Federico Alberto Ceccopieri, A.S. Belousov, Sergey Rusakov, P. Truöl, G. Bradt, M. Jacquet, E. E. Elsen, Emmanuelle Perez, J. Žáček, F. Huber, J. E. Olsson, Tomas Hreus, Natasa Raicevic, Th. Naumann, V. Andreev, A. Buniatyan, P. Pahl, Vincent Boudry, E. Gabathuler, A. N. Morozov, Dirk L. Hoffmann, B. Olivier, M. Steder, K. B. Cantun Avila, C. Kiesling, A. J. Campbell, Stephen Maxfield, N. Gogitidze, S. Ghazaryan, Pavel A. Belov, A. W. Jung, Steffen Schmitt, A. Dubak, K. Müller, Y. Vazdik, and Anastasia Grebenyuk
Subjects: Physics, Particle physics, Physics and Astronomy (miscellaneous), Proton, Astrophysics::High Energy Astrophysical Phenomena, Hadron, Elementary particle, HERA, Inelastic scattering, Deep inelastic scattering, Nuclear physics, Antimatter, High Energy Physics::Experiment, Nuclear Experiment, Nucleon, Engineering (miscellaneous)
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 $$^2$$ .
Published: 2014

9. Erratum to: Determination of the integrated luminosity at HERA using elastic QED compton events

Author: T. Kluge, Tomas Sykora, M. Sauter, I. Picuric, Calin Alexa, Wolfgang Lange, V. Lubimov, Guenter Eckerlin, André Schöning, S. Ghazaryan, J. Gayler, Th. Naumann, A. Dubak, Paul Laycock, E. Malinovski, Emmanuel Sauvan, G. Grindhammer, P. Pahl, E. Gabathuler, H. Pirumov, Laurent Favart, L. N. Shtarkov, J. V. Morris, Jenny List, I. Milcewicz-Mika, A. Baghdasaryan, A. Rostovtsev, Peter Robmann, A. Bunyatyan, Laurent Schoeffel, Daniel Pitzl, M. Kapichine, A. V. Fedotov, Marina Rotaru, Stephen Maxfield, Zhen Zhang, J. Feltesse, Ilias Panagoulias, Ricardo Lopez-Fernandez, R. Plačakytė, P. Sopicki, S. Shushkevich, Grzegorz Nowak, D. Ozerov, Max Klein, D. Traynor, A. M. Fomenko, L. Bystritskaya, M. Steder, A. Eliseev, Murrough Landon, A. Dossanov, D. J. Fischer, A. Petrukhin, P. D. Thompson, H-C. Schultz-Coulon, K. B. Cantun Avila, Andrew Mehta, N. Gogitidze, S. Backovic, H. Zohrabyan, J. Žáček, F. Huber, J. Zálešák, C. Kiesling, Michael Kramer, C. Pascaud, Alexander Bylinkin, A. J. Campbell, Fabian Zomer, Gerhard Brandt, S. Habib, V. Spaskov, C. Vallée, A. Lebedev, Anastasia Grebenyuk, Katerina Lipka, D. Haidt, F. Moreau, J. E. Olsson, W. Bartel, B. Lobodzinski, C. Niebuhr, Malte Hildebrandt, David South, V. Lendermann, A. B. Meyer, Jan Kretzschmar, P. Van Mechelen, Xavier Janssen, S. Egli, K. Krüger, V. Brisson, M. Fleischer, Eram Rizvi, B. Delcourt, G. Herrera, Roland Horisberger, V. Dodonov, A. Valkárová, Juraj Bracinik, I. R. Kenyon, Hannes Jung, Tomas Hreus, Natasa Raicevic, Y. Soloviev, S. Baghdasaryan, Richard Polifka, G. Laštovička-Medin, Alexander Zhokin, V. Cerny, Benno List, Bogdan Povh, F. Sefkow, H. J. Meyer, Vincent Boudry, A. N. Morozov, E. Barrelet, Leif J. Jönsson, J-P. Meyer, Y. Vazdik, J. E. Ruiz Tabasco, E. A. De Wolf, D. Salek, E. Wünsch, R. Roosen, K. Daum, F. D. Aaron, J. Delvax, H. U. Martyn, K. H. Hiller, R. C. W. Henderson, Maxime Gouzevitch, Z. Staykova, V. Andreev, Voica Radescu, M. Brinkmann, G. D. Patel, Daniel Britzger, E. Hennekemper, Christoph Grab, H. Henschel, J. G. Contreras, K. Müller, I. Bozovic-Jelisavcic, Pavel A. Belov, J. B. Dainton, D. Wegener, Dirk L. Hoffmann, J. C. Bizot, P. Kostka, A. Specka, J. Cvach, J. Turnau, Gabriel Stoicea, Dusan Bruncko, S. Levonian, K. Nowak, T. H. Tran, Cristinel Diaconu, K. Begzsuren, T. Greenshaw, I. Tsakov, J. Ferencei, S. Mikocki, T. Ravdandorj, Mila Pandurovic, Paul Newman, Claus Kleinwort, U. Straumann, Federico Alberto Ceccopieri, Karel Cerny, M. Jacquet, E. E. Elsen, Roman Kogler, A. Glazov, Emmanuelle Perez, T. J. Sloan, A.S. Belousov, Th D. Papadopoulou, Sergey Rusakov, P. Truöl, P. E. Reimer, D.K. Nikitin, M. Herbst, B. Tseepeldorj, D. P. C. Sankey, John A Coughlan, B. Stella, Stefan Schmitt, M. Dobre, V. Chekelian, R. Felst, Vladimir Palichik, R. Žlebčík, B. Pokorny, and L. Goerlich
Subjects: Nuclear physics, Physics, Luminosity (scattering theory), Physics and Astronomy (miscellaneous), HERA, Engineering (miscellaneous)
Abstract: The European Physical Journal C, 74 (2), ISSN:1434-6044, ISSN:1434-6052
Published: 2014

10. Measurement of the azimuthal correlation between the most forward jet and the scattered positron in deep-inelastic scattering at HERA

Author: Federico Alberto Ceccopieri, B. Stella, Stefan Schmitt, M. Dobre, M. Kraemer, P. Sopicki, Fabian Zomer, P. D. Thompson, David M. South, Richard Polifka, Juraj Bracinik, A. M. Fomenko, I. Milcewicz-Mika, Anastasia Grebenyuk, A. Baghdasaryan, Gerhard Brandt, A. Rostovtsev, J. B. Dainton, F. Moreau, Vladimir Palichik, J. Feltesse, Ilias Panagoulias, Grzegorz Nowak, A. Dossanov, V. Chekelian, F. D. Aaron, Ringaile Placakyte, Max Klein, D. Traynor, Paul Laycock, E. Malinovski, Emmanuel Sauvan, K. Krueger, M. Jacquet, E. E. Elsen, Zhiqing Zhang, A. Petrukhin, Ricardo Lopez-Fernandez, G. Grindhammer, J. Zacek, Xavier Janssen, Hannes Jung, K. Daum, R. Felst, V. Andreev, Alexander Zhokin, P. Truoel, G. Laštovička-Medin, Andre Schoening, V. Lendermann, S. Habib, M. Steder, C. Niebuhr, J. Cvach, Emmanuelle Perez, B. Pokorny, S. Egli, M. Fleischer, C. Pascaud, Christian Helebrant, Y. Soloviev, K. H. Hiller, R. C. W. Henderson, J. E. Olsson, W. Bartel, Calin Alexa, S. M. Piec, Bogdan Povh, Dirk L. Hoffmann, Leif J. Jönsson, Malte Hildebrandt, J. C. Bizot, Z. Staykova, Paul Newman, V. Brisson, C. Vallée, A. Lebedev, F. Huber, John A Coughlan, Tomas Sykora, M. Sauter, F. Sefkow, Y. Vazdik, Dusan Bruncko, K. Nowak, Hans-Christian Schultz-Coulon, S. Shushkevich, I. R. Kenyon, Laurent Schoeffel, Voica Radescu, Claus Kleinwort, Cristinel Diaconu, Laurent Favart, Natasa Raicevic, H. Henschel, Christoph Grab, H. U. Martyn, V. Cerny, Murrough Landon, A. Specka, S. Ghazaryan, D. Haidt, E. Barrelet, Vincent Boudry, Daniel Pitzl, S. Levonian, A. N. Morozov, U. Straumann, P. E. Reimer, T. Kluge, L. Goerlich, Tomas Hreus, A. Eliseev, Benno List, E. Wuensch, J. E. Ruiz Tabasco, E. A. De Wolf, B. R. Grell, R. Roosen, M. Kapichine, Th. Naumann, J-P. Meyer, Daniel Britzger, T. J. Sloan, A.S. Belousov, Th D. Papadopoulou, Eram Rizvi, E. Hennekemper, I. Picuric, Sergey Rusakov, V. Dodonov, S. Baghdasaryan, Guenter Eckerlin, P. Van Mechelen, T. Greenshaw, P. Pahl, Jan Kretzschmar, M. Brinkmann, B. Delcourt, E. Gabathuler, Karel Cerny, D. Wegener, Pavel A. Belov, Ivan Smiljanic, D. Salek, Maxime Gouzevitch, A. Makankine, Pierre Marage, G. Buschhorn, B. Tseepeldorj, Roman Kogler, M. Herbst, Gabriel Stoicea, D. Ozerov, D. J. Fischer, K. Mueller, A. Glazov, Wolfgang Lange, J. Gayler, T. H. Tran, Roland Horisberger, A. Valkárová, J. G. Contreras, L. Bystritskaya, J. Ferencei, J. V. Morris, Jenny List, T. Ravdandorj, Stephen Maxfield, H. Pirumov, A. Bunyatyan, H. Zohrabyan, Andrew Mehta, Marina Rotaru, Peter Robmann, A. Fedotov, N. Gogitidze, S. Mikocki, K. B. Cantun Avila, Katerina Lipka, C. Kiesling, Dave Sankey, J. Zálešák, A. J. Campbell, S. Backovic, J. Delvax, P. Kostka, V. Spaskov, G. D. Patel, J. Turnau, H. Meyer, D.K. Nikitin, A. B. Meyer, I. Bozovic-Jelisavcic, G. Herrera, Mila Pandurovic, V. Lubimov, A. Dubak, L. N. Shtarkov, K. Begzsuren, M. Mudrinic, I. Tsakov, H1 Collaboration, H1 Collaboration (ukupan broj autora: 203), Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de l'Accélérateur Linéaire (LAL), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire Leprince-Ringuet (LLR), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, H1, Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), and Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)
Subjects: Physics, Jet (fluid), Photon, Physics and Astronomy (miscellaneous), 010308 nuclear & particles physics, Scattering, Monte Carlo method, FOS: Physical sciences, HERA, Deep inelastic scattering, 01 natural sciences, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), Positron, 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Physique des particules élémentaires, ddc:530, High Energy Physics::Experiment, 010306 general physics, Parton shower, Engineering (miscellaneous)
Abstract: Deep-inelastic positron-proton scattering events at low photon virtuality, Q 2, with a forward jet, produced at small angles with respect to the proton beam, are measured with the H1 detector at HERA. A subsample of events with an additional jet in the central region is also studied. For both samples, differential cross sections and normalised distributions are measured as a function of the azimuthal angle difference, Δϕ, between the forward jet and the scattered positron in bins of the rapidity distance, Y, between them. The data are compared to predictions of Monte Carlo generators based on different evolution approaches as well as to next-to-leading order calculations in order to test the sensitivity to QCD evolution mechanisms., The European Physical Journal C, 72 (3), ISSN:1434-6044, ISSN:1434-6052
Published: 2012

11. Measurement of the inclusive ep scattering cross section at low Q 2 and x at HERA

Author: V. Jemanov, V. Korbel, A. Raspiareza, Krzysztof Kutak, S. Shushkevich, Sakar Osman, A. Eliseev, A. D.R. Vargas Trevino, M. Jacquet, J-P. Meyer, A. Schöning, Grzegorz Nowak, A. Dossanov, A. Petrukhin, N. Loktionova, R. Kogler, P. D. Thompson, J. V. Morris, Jenny List, C. Niebuhr, F. Moreau, Daniel Pitzl, D. Traynor, T. Preda, Wolfgang Lange, S. J. Aplin, A. Asmone, F. Cassol-Brunner, J. Cvach, J. Gayler, Calin Alexa, S. Ghazaryan, Ivan Smiljanic, D. Salek, S. Egli, Y. Soloviev, V. Brisson, Vladimir Andreev, H. U. Martyn, A.J. Rahmat, A. Bunyatyan, Paul Newman, T. Zimmermann, Doris Eckstein, Roland Horisberger, K. H. Hiller, A. Valkárová, R. C. W. Henderson, V. Boudry, J. G. Contreras, Jan Kretzschmar, A. Makankine, G. Buschhorn, D. Ozerov, Christian Helebrant, Marina Rotaru, K. Müller, K. Daum, Voica Radescu, T. Toll, V. Lendermann, Magnus Hansson, Christoph Grab, Paul Laycock, E. Malinovski, Emmanuel Sauvan, G. Grindhammer, K. Lipka, M. Del Degan, T. H. Tran, A. Lebedev, O. Behrendt, S. Vinokurova, Andrej Liptaj, D. J. Fischer, E. E. Elsen, P. E. Reimer, T. Laštovička, A. Specka, Peter Robmann, B. Stella, David M. South, A. Baghdasaryan, P. Kostka, Emmanuelle Perez, J. Turnau, L. Goerlich, V. Tchoulakov, D. Haidt, A. De Roeck, D. Wegener, Stefan Schmitt, K. Begzsuren, M. Mudrinic, D. Sunar, Gerhard Brandt, V. Volchinski, A. Nikiforov, B. Olivier, E. Barrelet, J. E. Ruiz Tabasco, E. A. De Wolf, Karlheinz Meier, R. Roosen, U. Straumann, L. Bystritskaya, M. E. Janssen, S. M. Piec, I. Tsakov, J. Žáček, H. Zohrabyan, Hans-Christian Schultz-Coulon, H. Meyer, Xavier Janssen, Y. de Boer, Eram Rizvi, O. Pejchal, Ll. Marti, A. Cholewa, S. Backovic, G. Laštovička-Medin, I. Bozovic-Jelisavcic, Vladimir Palichik, Pavel Murin, L. Lytkin, M. Herbst, Cristinel Diaconu, R.N. Shaw-West, Zuzana Rurikova, Tomas Hreus, K. Nowak, T. N. Trinh, V. Cerny, Benno List, V. Dodonov, Pierre Marage, Tim Greenshaw, M. Deak, I. Glushkov, Stephen Maxfield, Laurent Favart, V. Lubimov, A. Knutsson, B. Tseepeldorj, M. Brinkmann, Andrew Mehta, N. Gogitidze, T. J. Sloan, P.J.W. Faulkner, V. Efremenko, A.S. Belousov, Th D. Papadopoulou, Sergey Rusakov, P. Truöl, A. Astvatsatourov, Mila Pandurovic, G. Thompson, Karel Cerny, O. Behnke, A. Dubak, J. Ferencei, Z. Staykova, Laurent Schoeffel, Ewelina Lobodzinska, L. N. Shtarkov, Judith Katzy, E. Wünsch, Dave Sankey, A. W. Jung, Anna Kropivnitskaya, R. Felst, S. Mikocki, H. Henschel, J. Delvax, G. Herrera, John A Coughlan, M. von den Driesch, G. D. Patel, K. Urban, J.C. Bizot, Murrough Landon, Biljana Antunović, Fabian Zomer, T. Sykora, S. Habib, G. Cozzika, A. Glazov, K. Krüger, E. Hennekemper, C. Schmitz, Hannes Jung, Alexander Zhokin, C. Vallée, P. Van Mechelen, S. Levonian, M. Kapichine, M. Nozicka, B. Delcourt, Leif J. Jönsson, Benoit Roland, J. Feltesse, Ilias Panagoulias, Max Klein, B. R. Grell, M. Sauter, F. Tomasz, M. Fleischer, G. Leibenguth, Bogdan Povh, F. Sefkow, Gang Li, T. Kluge, K. Krastev, Matthias Ulrich Mozer, A. Fedotov, I. Picuric, C. Pascaud, K. B. Cantun Avila, C. Kiesling, Gabriel Stoicea, Guenter Eckerlin, A. J. Campbell, I. Milcewicz-Mika, M. Gouzevitch, R. Plačakytė, P. Sopicki, C. Wissing, Zhen Zhang, Juraj Bracinik, A. M. Fomenko, Ricardo Lopez-Fernandez, Th. Naumann, A. Falkiewicz, E. Gabathuler, M. Steder, D. Hoffmann, V. Michels, J. B. Dainton, J. E. Olsson, W. Bartel, Malte Hildebrandt, I. R. Kenyon, Natasa Raicevic, Y. Vazdik, A. N. Morozov, M. Kraemer, Richard Polifka, V. Chekelian, F. D. Aaron, I. Sheviakov, J. Zálešák, V. Spaskov, A. B. Meyer, Dusan Bruncko, B. Naroska, T. Ravdandorj, A. Rostovtsev, Claus Kleinwort, Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Laboratoire de l'Accélérateur Linéaire (LAL), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Laboratoire Leprince-Ringuet (LLR), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, H1, Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), (ukupan broj autora: 259), and H1 Collaboration
Subjects: Particle physics, Physics and Astronomy (miscellaneous), Monte Carlo method, FOS: Physical sciences, 01 natural sciences, High Energy Physics - Experiment, Nuclear physics, Momentum, Cross section (physics), High Energy Physics - Experiment (hep-ex), Positron, 0103 physical sciences, Radiative transfer, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], ddc:530, 010306 general physics, Nuclear Experiment, Engineering (miscellaneous), Physics, 010308 nuclear & particles physics, HERA, Deep inelastic scattering, Physique des particules élémentaires, High Energy Physics::Experiment, Beam (structure)
Abstract: A measurement of the inclusive ep scattering cross section is presented in the region of low momentum transfers, 0.2∈GeV2 ≤Q 2≤12∈GeV2, and low Bjorken x, 5.10 -6x≤0.02. The result is based on two data sets collected in dedicated runs by the H1 Collaboration at HERA at beam energies of 27.6∈GeV and 920∈GeV for positrons and protons, respectively. A combination with data previously published by H1 leads to a cross section measurement of a few percent accuracy. A kinematic reconstruction method exploiting radiative ep events extends the measurement to lower Q 2 and larger x. The data are compared with theoretical models which apply to the transition region from photoproduction to deep inelastic scattering. © 2009 Springer-Verlag / Società Italiana di Fisica., 0, SCOPUS: ar.j, info:eu-repo/semantics/published
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12. Measurement of the charm and beauty structure functions using the H1 vertex detector at HERA

Author: Krzysztof Kutak, Fabian Zomer, J. V. Morris, Jenny List, A. D.R. Vargas Trevino, K. Müller, G. Cozzika, Juraj Bracinik, A.J. Rahmat, A. Bunyatyan, Marina Rotaru, Hannes Jung, Alexander Zhokin, R. Kogler, C. Vallée, J. Cvach, Dusan Bruncko, M. Kraemer, T. Greenshaw, Richard Polifka, V. Chekelian, F. D. Aaron, Christoph Wissing, A. Lebedev, K. Nowak, Stephen Maxfield, Mila Pandurovic, Paul Laycock, C. Niebuhr, D. Haidt, J. E. Olsson, W. Bartel, M. Deak, J. Ferencei, T. Ravdandorj, Claus Kleinwort, Andrew Mehta, N. Gogitidze, S. Egli, Malte Hildebrandt, E. Malinovski, Emmanuel Sauvan, J. Žáček, G. Grindhammer, R. Zus, J. Zálešák, Eram Rizvi, G. Thompson, V. Michels, V. Spaskov, Y. Soloviev, V. Dodonov, A. B. Meyer, Z. Staykova, T. H. Tran, M. Del Degan, A. W. Jung, G. Laštovička-Medin, Hans-Christian Schultz-Coulon, Judith Katzy, J. B. Dainton, P. E. Reimer, H. Henschel, I. R. Kenyon, B. Pokorny, K. Daum, G. Herrera, Alan Campbell, T. Kluge, Roland Horisberger, A. Valkárová, J.C. Bizot, S. Habib, Natasa Raicevic, L. Goerlich, A. Falkiewicz, Voica Radescu, Vincent Boudry, D. Sunar, M. Kapichine, M. Nozicka, E. Hennekemper, Gerhard Brandt, Christoph Grab, A. N. Morozov, K. Krüger, I. Picuric, C. Pascaud, J. Feltesse, Karel Cerny, V. Lubimov, K. Lipka, Ilias Panagoulias, A. Makankine, Guenter Eckerlin, André Schöning, Ivan Smiljanic, A. Nikiforov, D. Salek, B. Delcourt, D. Wegener, G. Buschhorn, D. Ozerov, Tomas Hreus, David M. South, V. Volchinski, V. Lendermann, D. J. Fischer, B. R. Grell, Vladimir Andreev, A. Dubak, Max Klein, H. U. Martyn, D. Traynor, F. Tomasz, Ll. Marti, A. Cholewa, L. N. Shtarkov, M. Sauter, Xavier Janssen, I. Bozovic-Jelisavcic, Leif J. Jönsson, L. Lytkin, Benoit Roland, M. Herbst, V. Efremenko, A. Baghdasaryan, A. Rostovtsev, Cristinel Diaconu, Laurent Schoeffel, B. Tseepeldorj, T. N. Trinh, M. Fleischer, K. Urban, Murrough Landon, S. Mikocki, G. Leibenguth, K. Krastev, S. Shushkevich, Sakar Osman, L. Bystritskaya, I. Glushkov, M. E. Janssen, A. Eliseev, Gabriel Stoicea, A. Glazov, H. Zohrabyan, Gang Li, Bogdan Povh, F. Sefkow, P. Van Mechelen, E. Wünsch, R. Plačakytė, B. Olivier, R.N. Shaw-West, S. Levonian, P. E. Marage, Zhen Zhang, Ricardo Lopez-Fernandez, P. Sopicki, Albert Knutsson, J-P. Meyer, V. Cerny, Benno List, A. M. Fomenko, Anna Kropivnitskaya, S. Vinokurova, I. Milcewicz-Mika, Daniel Pitzl, R. Felst, M. Steder, Maxime Gouzevitch, D. Hoffmann, J. G. Contreras, A. Asmone, Dave Sankey, J. Delvax, P. Kostka, F. Cassol-Brunner, J. Turnau, K. Begzsuren, Jan Kretzschmar, Andrej Liptaj, M. Mudrinic, Wolfgang Lange, M. Jacquet, I. Tsakov, K. Alimujiang, Christian Helebrant, M. von den Driesch, G. D. Patel, Biljana Antunović, T. Sykora, J. Gayler, Paul Newman, T. Zimmermann, Calin Alexa, U. Straumann, A. Raspiareza, Thomas Naumann, S. Ghazaryan, Theodora Papadopoulou, Peter Robmann, Pavel Murin, S. Backovic, Laurent Favart, Zuzana Rurikova, V. Tchoulakov, Matthias Ulrich Mozer, A. Fedotov, K. B. Cantun Avila, C. Kiesling, Grzegorz Nowak, A. Dossanov, A. Petrukhin, M. Aldaya Martin, V. Brisson, E. Barrelet, Y. Vazdik, J. E. Ruiz Tabasco, E. A. De Wolf, R. Roosen, Y. de Boer, P. D. Thompson, F. Moreau, H. J. Meyer, E. Gabathuler, K. H. Hiller, R. C. W. Henderson, A. Specka, M. Brinkmann, N. Loktionova, B. Stella, Stefan Schmitt, T. Preda, Vladimir Palichik, E. E. Elsen, T. Toll, Emmanuelle Perez, S. M. Piec, O. Pejchal, John A Coughlan, T. J. Sloan, A.S. Belousov, Sergey Rusakov, P. Truöl, Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de l'Accélérateur Linéaire (LAL), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire Leprince-Ringuet (LLR), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, H1, Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), H1 Collaboration, and (ukupan broj autora: 248)
Subjects: Quark, Particle physics, Physics and Astronomy (miscellaneous), FOS: Physical sciences, Elementary particle, 01 natural sciences, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], ddc:530, Charm (quantum number), Nuclear Experiment, 010306 general physics, Engineering (miscellaneous), Physics, Neutral current, 010308 nuclear & particles physics, High Energy Physics::Phenomenology, HERA, Deep inelastic scattering, Baryon, Pair production, Physique des particules élémentaires, High Energy Physics::Experiment
Abstract: Inclusive charm and beauty cross sections are measured in e-p and e+p neutral current collisions at HERA in the kinematic region of photon virtuality 5 ≤ Q2≤2000 GeV2 and Bjorken scaling variable 0. 0002≤x≤0.05. The data were collected with the H1 detector in the years 2006 and 2007 corresponding to an integrated luminosity of 189 pb-1. The numbers of charm and beauty events are determined using variables reconstructed by the H1 vertex detector including the impact parameter of tracks to the primary vertex and the position of the secondary vertex. The measurements are combined with previous data and compared to QCD predictions. © Springer-Verlag / Società Italiana di Fisica 2009., 0, DESY-09-096 / arxiv:0907.2643, SCOPUS: ar.j, info:eu-repo/semantics/published
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13. Measurement of photon production in the very forward direction in deep-inelastic scattering at HERA

Author: K. Urban, Murrough Landon, V. Lubimov, David M. South, P. Van Mechelen, A. Dubak, A. Baghdasaryan, A. Rostovtsev, L. N. Shtarkov, Roland Horisberger, A. Valkárová, A. Makankine, G. Buschhorn, D. Ozerov, Peter Robmann, D. J. Fischer, Dusan Bruncko, Pierre Marage, Vladimir Andreev, C. Niebuhr, Ivan Smiljanic, D. Salek, J. G. Contreras, K. Daum, T. Kluge, H. U. Martyn, S. Egli, L. Lytkin, T. Greenshaw, Th. Naumann, J-P. Meyer, S. Backovic, Y. Soloviev, I. Picuric, M. Kapichine, Anastasia Grebenyuk, J. Ferencei, Ricardo Lopez-Fernandez, Laurent Favart, P. Pahl, E. Gabathuler, M. Steder, Maxime Gouzevitch, Guenter Eckerlin, J. V. Morris, Jenny List, Paul Laycock, E. Malinovski, Karel Cerny, T. Ravdandorj, Emmanuel Sauvan, G. Grindhammer, J. Cvach, Roman Kogler, V. Lendermann, S. Habib, A. Bunyatyan, Christian Helebrant, Marina Rotaru, Tomas Sykora, P. Kostka, Voica Radescu, I. Milcewicz-Mika, A. Glazov, Zhiqing Zhang, D. Wegener, J. C. Bizot, B. R. Grell, K. Krueger, K. Nowak, Gerhard Brandt, Christoph Grab, J. Feltesse, Katerina Lipka, T. H. Tran, Ilias Panagoulias, Stephen Maxfield, Cristinel Diaconu, Fabian Zomer, J. Zacek, J. Turnau, Ringaile Placakyte, Max Klein, D. Traynor, Xavier Janssen, Dave Sankey, Andrew Mehta, K. Begzsuren, N. Gogitidze, A. Fedotov, M. Sauter, J. Zálešák, M. Fleischer, M. Mudrinic, K. B. Cantun Avila, V. Spaskov, Daniel Pitzl, D.K. Nikitin, I. Tsakov, Pavel A. Belov, C. Kiesling, Juraj Bracinik, S. Baghdasaryan, A. B. Meyer, S. Mikocki, A. J. Campbell, J. Delvax, G. D. Patel, P. D. Thompson, G. Herrera, Bogdan Povh, F. Huber, M. Kraemer, F. Sefkow, Jan Kretzschmar, Gabriel Stoicea, Andre Schoening, C. Pascaud, J. E. Olsson, W. Bartel, Hans-Christian Schultz-Coulon, Calin Alexa, F. Moreau, Richard Polifka, Hannes Jung, Alexander Zhokin, S. Shushkevich, B. Delcourt, J. B. Dainton, K. Mueller, Paul Newman, Malte Hildebrandt, C. Vallée, A. Lebedev, A. Eliseev, Claus Kleinwort, G. Laštovička-Medin, Wolfgang Lange, D. Haidt, V. Chekelian, F. D. Aaron, P. Sopicki, A. M. Fomenko, I. R. Kenyon, H. J. Meyer, S. Ghazaryan, Z. Staykova, Tomas Hreus, S. Levonian, Natasa Raicevic, Eram Rizvi, Leif J. Jönsson, Vincent Boudry, V. Dodonov, J. Gayler, L. Bystritskaya, U. Straumann, H. Henschel, Daniel Britzger, E. Hennekemper, A. N. Morozov, Mila Pandurovic, K. H. Hiller, R. C. W. Henderson, H. Pirumov, H. Zohrabyan, A. Specka, V. Cerny, Benno List, M. Brinkmann, I. Bozovic-Jelisavcic, T. J. Sloan, A.S. Belousov, Th D. Papadopoulou, Sergey Rusakov, P. Truöl, M. Jacquet, E. E. Elsen, Emmanuelle Perez, S. M. Piec, Federico Alberto Ceccopieri, Grzegorz Nowak, A. Dossanov, A. Petrukhin, V. Brisson, E. Barrelet, J. E. Ruiz Tabasco, E. A. De Wolf, R. Roosen, Dieter H. H. Hoffmann, P. E. Reimer, E. Wuensch, M. Herbst, John A Coughlan, B. Stella, Stefan Schmitt, M. Dobre, Vladimir Palichik, Y. Vazdik, R. Felst, B. Pokorny, L. Goerlich, B. Tseepeldorj, Laurent Schoeffel, (ukupan broj autora: 204), Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de l'Accélérateur Linéaire (LAL), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire Leprince-Ringuet (LLR), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, H1, Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Physics, and Elementary Particle Physics
Subjects: Particle physics, Photon, Physics and Astronomy (miscellaneous), FOS: Physical sciences, Inelastic scattering, 7. Clean energy, 01 natural sciences, High Energy Physics - Experiment, Nuclear physics, Momentum, High Energy Physics - Experiment (hep-ex), 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], ddc:530, 010306 general physics, Nuclear Experiment, Engineering (miscellaneous), Physics, 010308 nuclear & particles physics, Scattering, HERA, Deep inelastic scattering, DESY HERA Stor, Pseudorapidity, H1, Physics::Accelerator Physics, High Energy Physics::Experiment, Lepton
Abstract: The production of photons at very small angles with respect to the proton beam direction is studied in deep-inelastic positron-proton scattering at HERA. The data are taken with the H1 detector in the years 2006 and 2007 and correspond to an integrated luminosity of $126 \mathrm{pb}^{-1}$. The analysis covers the range of negative four momentum transfer squared at the positron vertex $67.9$ as a function of its transverse momentum $p_T^{lead}$ and longitudinal momentum fraction of the incoming proton $x_L^{lead}$. In addition, the cross sections are studied as a function of the sum of the longitudinal momentum fraction $x_L^{sum}$ of all photons in the pseudorapidity range $\eta>7.9$. The cross sections are normalised to the inclusive deep-inelastic scattering cross section and compared to the predictions of models of deep-inelastic scattering and models of the hadronic interactions of high energy cosmic rays., Comment: 19 pages, 6 figures and 2 tables
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14. Measurement of the diffractive longitudinal structure function $F_{L}^{D}$ at HERA

Author: Z. Staykova, J. Delvax, Calin Alexa, P. Tru¨ol, G. D. Patel, K. H. Hiller, H. Henschel, R. C. W. Henderson, I. Panagouliasl, Anastasia Grebenyuk, M. Kraemer, H. Meyer, Leif J. Jönsson, C. Niebuhr, T. Kluge, A. Makankine, G. Buschhorn, S. Ghazaryan, Richard Polifka, E. Barrelet, A. Fedotov, K. B. Cantun Avila, Stephen Maxfield, S. Egli, S. Shushkevich, Pierre Marage, D. Ozerov, Fabian Zomer, I. Picuric, I. Bozovic-Jelisavcic, Y. Soloviev, E. W¨unsch, C. Kiesling, Guenter Eckerlin, D. J. Fischer, Andrew Mehta, J. E. Ruiz Tabasco, E. A. De Wolf, R. Roosen, Paul Laycock, E. Malinovski, Emmanuel Sauvan, G. Grindhammer, A. Eliseev, Christian Helebrant, A. J. Campbell, N. Gogitidze, V. Chekelian, F. D. Aaron, V. Lendermann, J. V. Morris, Dirk L. Hoffmann, J. C. Bizot, Ivan Smiljanic, D. Salek, Jenny List, Hannes Jung, Alexander Zhokin, A. Specka, Voica Radescu, Christoph Grab, P. Sopicki, B. Pokorny, S. Baghdasaryan, P. E. Reimer, D.K. Nikitin, A. M. Fomenko, A. Bunyatyan, S. Habib, B. R. Grell, Marina Rotaru, M. Kapichine, G. Herrera, I. Milcewicz-Mika, B. Stella, Grzegorz Nowak, H-C. Schultz-Coulon, Stefan Schmitt, M. Dobre, P. D. Thompson, Juraj Bracinik, J. G. Contreras, David South, A. Dossanov, A. Petrukhin, Wolfgang Lange, L. Bystritskaya, P. Kostka, J. Žáček, F. Moreau, K. Krüger, V. Lubimov, F. Huber, A. Baghdasaryan, A. Rostovtsev, M. Fleischer, M. Herbst, J. Gayler, Paul Newman, Vladimir Palichik, H. Zohrabyan, A. Dubak, L. Goerlich, J. Turnau, Claus Kleinwort, C. Pascaud, C. Vallée, A. Lebedev, J. Zálešák, H. Pirumov, Katerina Lipka, V. Spaskov, Mila Pandurovic, G. Laštovička-Medin, Y. Vazdik, Cristinel Diaconu, Daniel Britzger, E. Hennekemper, L. N. Shtarkov, K. Müller, J. B. Dainton, J. Feltesse, Laurent Favart, U. Straumann, Daniel Pitzl, Bogdan Povh, F. Sefkow, D. Haidt, A. B. Meyer, V. Brisson, V. Cerny, K. Begzsuren, M. Mudrinic, Peter Robmann, D. Wegener, Benno List, Pavel A. Belov, Ringaile Placakyte, D. Traynor, Th. Naumann, I. Tsakov, Vladimir Andreev, T. H. Tran, Eram Rizvi, Tomas Sykora, B. Tseepeldorj, H. U. Martyn, Matthias Klein, V. Dodonov, M. Sauter, Tomas Hreus, Dusan Bruncko, D. P. C. Sankey, P. Pahl, E. Gabathuler, A. Sch¨oning, Karel Cerny, John A Coughlan, Jan Kretzschmar, Roland Horisberger, J. Cvach, S. Backovic, B. Delcourt, Roman Kogler, Gabriel Stoicea, J. E. Olsson, W. Bartel, T. Greenshaw, A. Glazov, A. Valkárová, R. Felst, S. Mikocki, K. Nowak, Malte Hildebrandt, J. Ferencei, T. Ravdandorj, I. R. Kenyon, Natasa Raicevic, Vincent Boudry, A. N. Morozov, Zhen Zhang, Ricardo Lopez-Fernandez, Th. Papadopouloul, M. Steder, M. Brinkmann, K. Daum, Federico Alberto Ceccopieri, Laurent Schoeffel, Murrough Landon, S. Levonian, Gerhard Brandt, Xavier Janssen, P. Van Mechelen, J-P. Meyer, Maxime Gouzevitch, T. J. Sloan, A.S. Belousov, Sergey Rusakov, M. Jacquet, E. E. Elsen, Emmanuelle Perez, S. M. Piec, Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de l'Accélérateur Linéaire (LAL), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire Leprince-Ringuet (LLR), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), H1, Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), H1 Collaboration, and H1 Collaboration (ukupan broj autora: 205)
Subjects: Particle physics, Photon, Proton, Physics and Astronomy (miscellaneous), FOS: Physical sciences, Parton, 01 natural sciences, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], ddc:530, Twist, 010306 general physics, Nuclear Experiment, Engineering (miscellaneous), Physics, Quantum chromodynamics, 010308 nuclear & particles physics, Scattering, HERA, Dipole, Physique des particules élémentaires, High Energy Physics::Experiment
Abstract: First measurements are presented of the diffractive cross section σ ep→eXY at centre-of-mass energies s√ of 225 and 252GeV, together with a precise new measurement at s√ of 319GeV, using data taken with the H1 detector in the years 2006 and 2007. Together with previous H1 data at s√ of 301GeV, the measurements are used to extract the diffractive longitudinal structure function FDL in the range of photon virtualities 4.0≤Q2≤44.0GeV2 and fractional proton longitudinal momentum loss 5×10−4≤x ℙ≤3×10−3. The measured FDL is compared with leading twist predictions based on diffractive parton densities extracted in NLO QCD fits to previous measurements of diffractive Deep-Inelastic Scattering and with a model which additionally includes a higher twist contribution derived from a colour dipole approach. The ratio of the diffractive cross section induced by longitudinally polarised photons to that for transversely polarised photons is extracted and compared with the analogous quantity for inclusive Deep-Inelastic Scattering., The European Physical Journal C, 71 (12), ISSN:1434-6044, ISSN:1434-6052
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15. Measurement of charm and beauty jets in deep inelastic scattering at HERA

Author: Paul Laycock, P. Kostka, E. Malinovski, Emmanuel Sauvan, G. Grindhammer, J. V. Morris, J. Turnau, Jenny List, A.J. Rahmat, A. Bunyatyan, Marina Rotaru, K. Begzsuren, V. Lubimov, M. Mudrinic, I. Tsakov, G. Laštovička-Medin, C. Niebuhr, S. Egli, D.K. Nikitin, T. J. Sloan, A.S. Belousov, Th D. Papadopoulou, Sergey Rusakov, P. Truöl, Y. Soloviev, A. Dubak, D. Wegener, A. Knutsson, S. Shushkevich, M. Jacquet, E. E. Elsen, L. N. Shtarkov, T. H. Tran, Sakar Osman, A. Eliseev, Emmanuelle Perez, S. M. Piec, Dave Sankey, J. Delvax, Federico Alberto Ceccopieri, Grzegorz Nowak, N. Loktionova, K. H. Hiller, R. C. W. Henderson, M. von den Driesch, G. D. Patel, J. Cvach, V. Efremenko, A. Makankine, G. Buschhorn, D. Ozerov, Roland Horisberger, A. Valkárová, T. Sykora, Mila Pandurovic, A. Dossanov, A. Petrukhin, K. Nowak, Voica Radescu, Christoph Grab, D. J. Fischer, S. Mikocki, Calin Alexa, C. Pascaud, C. Vallée, K. Daum, A. D.R. Vargas Trevino, J. E. Olsson, A. Specka, A. Lebedev, Krzysztof Kutak, Vladimir Andreev, H. U. Martyn, Matthias Klein, D. Haidt, W. Bartel, David M. South, Malte Hildebrandt, Wolfgang Lange, K. Müller, S. Habib, Andre Schoening, Eram Rizvi, R. Kogler, Stephen Maxfield, S. Ghazaryan, B. Tseepeldorj, A. Baghdasaryan, A. Rostovtsev, Matthias Ulrich Mozer, A. Fedotov, John A Coughlan, Andrew Mehta, N. Gogitidze, V. Dodonov, J. Gayler, P. D. Thompson, Laurent Schoeffel, I. R. Kenyon, A. W. Jung, K. Urban, Natasa Raicevic, Murrough Landon, G. Herrera, K. B. Cantun Avila, F. Moreau, Vincent Boudry, P. E. Reimer, V. Brisson, H. Pirumov, T. Toll, Katerina Lipka, A. N. Morozov, Judith Katzy, P. Van Mechelen, E. Wuensch, H. J. Meyer, R. Placakyte, Daniel Britzger, E. Hennekemper, D. Sunar, Anna Kropivnitskaya, R. Felst, C. Kiesling, B. Stella, Stefan Schmitt, M. Dobre, A. Nikiforov, A. J. Campbell, E. Barrelet, Ricardo Lopez-Fernandez, B. Pokorny, J. E. Ruiz Tabasco, E. A. De Wolf, R. Roosen, I. Bozovic-Jelisavcic, Vladimir Palichik, M. Steder, M. Herbst, F. Huber, L. Bystritskaya, B. R. Grell, L. Goerlich, Hans-Christian Schultz-Coulon, Peter Robmann, Y. Vazdik, M. Fleischer, Gabriel Stoicea, Tomas Hreus, S. Backovic, Th. Naumann, H. Zohrabyan, P. Pahl, E. Gabathuler, Christian Helebrant, Dirk L. Hoffmann, J. C. Bizot, V. Cerny, Benno List, I. Milcewicz-Mika, M. Brinkmann, Ivan Smiljanic, Bogdan Povh, D. Salek, A. Cholewa, V. Lendermann, F. Sefkow, J. G. Contreras, J. Feltesse, Ilias Panagoulias, P. Sopicki, A. M. Fomenko, Laurent Favart, Cristinel Diaconu, D. Traynor, Daniel Pitzl, T. Kluge, M. Sauter, I. Picuric, Guenter Eckerlin, S. Levonian, Juraj Bracinik, Jan Kretzschmar, B. Delcourt, Pierre Marage, Karel Cerny, A. Glazov, Paul Newman, J. B. Dainton, Claus Kleinwort, U. Straumann, K. Krueger, Gerhard Brandt, J. Zacek, Xavier Janssen, J-P. Meyer, M. Kapichine, Maxime Gouzevitch, Fabian Zomer, J. Zálešák, V. Spaskov, A. B. Meyer, M. Kraemer, Hannes Jung, Alexander Zhokin, M. Deak, G. Thompson, Z. Staykova, Richard Polifka, H. Henschel, Leif J. Jönsson, V. Chekelian, F. D. Aaron, Anastasia Grebenyuk, Zhiqing Zhang, Dusan Bruncko, T. Greenshaw, J. Ferencei, T. Ravdandorj, Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de l'Accélérateur Linéaire (LAL), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire Leprince-Ringuet (LLR), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, H1, Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), H1 Collaboration, and (ukupan broj autora: 219)
Subjects: Particle physics, Physics and Astronomy (miscellaneous), Astrophysics::High Energy Astrophysical Phenomena, Hadron, FOS: Physical sciences, Elementary particle, Inelastic scattering, 01 natural sciences, 7. Clean energy, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], ddc:530, Charm (quantum number), 010306 general physics, Nuclear Experiment, Engineering (miscellaneous), Physics, 010308 nuclear & particles physics, Scattering, HERA, Deep inelastic scattering, Pseudorapidity, High Energy Physics::Experiment
Abstract: Measurements of cross sections for events with charm and beauty jets in deep inelastic scattering at HERA are presented. Events with jets of transverse energy E_T^jet > 6 GeV and pseudorapidity -1.0 < eta^jet < 1.5 in the laboratory frame are selected in the kinematic region of photon virtuality Q^2 > 6 GeV^2 and inelasticity variable 0.07 < y < 0.625. Measurements are also made requiring a jet in the Breit frame with E_T^*jet > 6 GeV. The data were collected with the H1 detector in the years 2006 and 2007 corresponding to an integrated luminosity of 189 pb^-1. The numbers of charm and beauty jets are determined using variables reconstructed using the H1 vertex detector with which the impact parameters of the tracks to the primary vertex and the position of secondary vertices are measured. The measurements are compared with QCD predictions and with previous measurements where heavy flavours are identified using muons., 33 pages, 9 figures, 4 tables
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16. Measurement of Feynman- $$x$$ x spectra of photons and neutrons in the very forward direction in deep-inelastic scattering at HERA

Author: Paul Laycock, E. Malinovski, Emmanuel Sauvan, G. Grindhammer, Zhen Zhang, M. Steder, P. D. Thompson, B. Lobodzinski, D. Ozerov, C. Pascaud, C. Vallée, A. Lebedev, J. E. Olsson, Natasa Raicevic, Vincent Boudry, A. N. Morozov, D. Haidt, Pavel A. Belov, H. J. Meyer, D. Salek, J. Feltesse, T. Greenshaw, Paul Newman, A. Baghdasaryan, S. Shushkevich, A. Rostovtsev, Eram Rizvi, Claus Kleinwort, J. Ferencei, T. Ravdandorj, V. Dodonov, Tomas Sykora, J. Žáček, M. Sauter, Max Klein, H. U. Martyn, D. Traynor, D. Wegener, Katerina Lipka, J. G. Contreras, Fabian Zomer, Gerhard Brandt, U. Straumann, R. Roosen, F. Huber, V. Chekelian, C. Niebuhr, A. B. Meyer, Hans-Christian Schultz-Coulon, Monica Dobre, Richard Polifka, Alexander Bylinkin, S. Egli, L. Lytkin, K. B. Cantun Avila, H. Pirumov, Xavier Janssen, Y. Soloviev, S. Ghazaryan, M. Fleischer, E. Wünsch, Dave Sankey, Cristinel Diaconu, A. J. Campbell, Roland Horisberger, R. C. W. Henderson, Voica Radescu, Christoph Grab, A. Valkárová, K. Müller, G. D. Patel, Grzegorz Nowak, A. Dossanov, A. Petrukhin, Tomas Hreus, B. Tseepeldorj, P. E. Reimer, V. Andreev, C. Kiesling, S. Levonian, K. Nowak, Th. Naumann, Jenny List, Hannes Jung, A.S. Belousov, A. Grebenyuk, Sergey Rusakov, J-P. Meyer, B. Pokorny, P. Truöl, A. Specka, A. Buniatyan, M. Brinkmann, Marina Rotaru, P. Pahl, Maxime Gouzevitch, E. Gabathuler, Daniel Pitzl, Federico Alberto Ceccopieri, R. Žlebčík, V. Brisson, P. Kostka, L. Goerlich, Bogdan Povh, Wolfgang Lange, Karel Cerny, J. Turnau, F. Sefkow, Stephen Maxfield, V. Spaskov, M. Herbst, J. B. Dainton, K. Begzsuren, Jan Kretzschmar, J. Gayler, S. Mikocki, I. Tsakov, Andrew Mehta, N. Gogitidze, Y. Vazdik, Roman Kogler, B. Stella, Stefan Schmitt, R. Plačakytė, A. Glazov, P. Sopicki, M. Jacquet, E. E. Elsen, A. M. Fomenko, Peter Robmann, Emmanuelle Perez, I. Picuric, Guenter Eckerlin, André Schöning, Laurent Schoeffel, Murrough Landon, Dieter Hoffmann, P. Van Mechelen, Daniel Britzger, K. Daum, Benno List, Katja Krüger, A. V. Fedotov, David South, L. Bystritskaya, H. Zohrabyan, J. Hladkỳ, M. Kapichine, Laurent Favart, Laboratoire de l'Accélérateur Linéaire (LAL), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Laboratoire Leprince-Ringuet (LLR), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire d'Annecy de Physique des Particules (LAPP), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS), Laboratoire des technologies de la microélectronique (LTM), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS), H1, Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), and Université Joseph Fourier - Grenoble 1 (UJF)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Particle physics, Antiparticle, Physics and Astronomy (miscellaneous), Astrophysics::High Energy Astrophysical Phenomena, exclusive production [photon], Feynman [scaling], FOS: Physical sciences, measured [cross section], Inelastic scattering, momentum transfer dependence, 7. Clean energy, deep inelastic scattering [model], Computer Science::Digital Libraries, High Energy Physics - Experiment, energy dependence, x-dependence, Nuclear physics, symbols.namesake, High Energy Physics - Experiment (hep-ex), [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Feynman diagram, ddc:530, deep inelastic scattering [positron p], 319 GeV-cms, Nuclear Experiment, Engineering (miscellaneous), Physics, interaction [hadron hadron], Scattering, HERA, forward production [n], Deep inelastic scattering, DESY HERA Stor, Pseudorapidity, Antimatter, symbols, H1, High Energy Physics::Experiment, high energy behavior [cross section], experimental results
Abstract: Measurements of normalised cross sections for the production of photons and neutrons at very small angles with respect to the proton beam direction in deep-inelastic $ep$ scattering at HERA are presented as a function of the Feynman variable $x_F$ and of the centre-of-mass energy of the virtual photon-proton system $W$. The data are taken with the H1 detector in the years 2006 and 2007 and correspond to an integrated luminosity of $131 \mathrm{pb}^{-1}$. The measurement is restricted to photons and neutrons in the pseudorapidity range $\eta>7.9$ and covers the range of negative four momentum transfer squared at the positron vertex $6, Comment: 30 pages, 5 tables, 10 figures, submitted to EPJC
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17. Measurement of beauty and charm photoproduction using semi-muonic decays in dijet events at HERA

Author: A. Dossanov, A. Petrukhin, B. Stella, Stefan Schmitt, M. Dobre, M. Jacquet, E. E. Elsen, S. Habib, J-P. Meyer, Vladimir Palichik, M. Kapichine, J. Feltesse, Ilias Panagoulias, P. Kostka, J. Turnau, V. Brisson, K. Begzsuren, J. E. Olsson, W. Bartel, J. Cvach, I. Tsakov, J. Zálešák, V. Spaskov, Emmanuelle Perez, Y. Vazdik, A. B. Meyer, Max Klein, David South, V. Andreev, D. Traynor, Malte Hildebrandt, Dusan Bruncko, Maxime Gouzevitch, Roland Horisberger, A. Valkárová, K. Krüger, T. Greenshaw, I. R. Kenyon, Natasa Raicevic, Cristinel Diaconu, S. Shushkevich, E. Barrelet, C. Niebuhr, A. Eliseev, K. Daum, V. Cerny, Benno List, Alexander Bylinkin, V. Lubimov, J. Ferencei, G. Laštovička-Medin, T. Kluge, Vincent Boudry, T. Ravdandorj, K. B. Cantun Avila, R. Žlebčík, A. N. Morozov, Daniel Pitzl, Karel Cerny, J. E. Ruiz Tabasco, E. A. De Wolf, R. Roosen, S. Egli, Paul Laycock, E. Malinovski, Emmanuel Sauvan, Laurent Favart, Dirk L. Hoffmann, J. C. Bizot, Michael Kramer, C. Pascaud, C. Vallée, A. Lebedev, Z. Staykova, Y. Soloviev, G. Grindhammer, A. Dubak, Federico Alberto Ceccopieri, Richard Polifka, Daniel Britzger, E. Hennekemper, Roman Kogler, C. Kiesling, A. J. Campbell, D. Wegener, I. Picuric, L. N. Shtarkov, A. Glazov, F. D. Aaron, Guenter Eckerlin, André Schöning, J. Žáček, F. Huber, Hans-Christian Schultz-Coulon, S. Levonian, K. Nowak, Katerina Lipka, Pavel A. Belov, Th. Naumann, K. Müller, P. Pahl, T. H. Tran, D. Haidt, Voica Radescu, H. Henschel, Christoph Grab, D. Ozerov, Fabian Zomer, Laurent Schoeffel, Eram Rizvi, Mila Pandurovic, Wolfgang Lange, J. Gayler, E. Gabathuler, Gabriel Stoicea, Tomas Hreus, Jan Kretzschmar, R. Plačakytė, V. Chekelian, D. Salek, D. J. Fischer, H. U. Martyn, B. Delcourt, Stephen Maxfield, V. Dodonov, Zhen Zhang, Murrough Landon, R. Felst, P. Sopicki, V. Lendermann, S. Mikocki, A. M. Fomenko, John A Coughlan, Ricardo Lopez-Fernandez, M. Steder, Andrew Mehta, N. Gogitidze, A. Baghdasaryan, A. Rostovtsev, Gerhard Brandt, I. Milcewicz-Mika, Tomas Sykora, H. Pirumov, J. G. Contreras, Juraj Bracinik, M. Sauter, A. V. Fedotov, M. Brinkmann, T. J. Sloan, A.S. Belousov, Th D. Papadopoulou, Sergey Rusakov, Xavier Janssen, P. E. Reimer, P. Truöl, Paul Newman, Calin Alexa, J. V. Morris, Jenny List, P. Van Mechelen, G. Herrera, L. Bystritskaya, Claus Kleinwort, J. B. Dainton, M. Fleischer, A. Bunyatyan, Marina Rotaru, H. Zohrabyan, B. Tseepeldorj, M. Herbst, Bogdan Povh, F. Sefkow, Hannes Jung, B. Pokorny, S. Ghazaryan, Alexander Zhokin, U. Straumann, L. Goerlich, D.K. Nikitin, S. Baghdasaryan, E. Wünsch, Dave Sankey, J. Delvax, G. D. Patel, I. Bozovic-Jelisavcic, Peter Robmann, S. Backovic, Anastasia Grebenyuk, Leif J. Jönsson, P. D. Thompson, F. Moreau, B. Lobodzinski, H. J. Meyer, K. H. Hiller, R. C. W. Henderson, A. Specka, Grzegorz Nowak, Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Laboratoire de l'Accélérateur Linéaire (LAL), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Laboratoire Leprince-Ringuet (LLR), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Institut de Physique Nucléaire de Lyon (IPNL), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire d'Annecy de Physique des Particules (LAPP), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS), Laboratoire des technologies de la microélectronique (LTM), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS), H1, Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Université Joseph Fourier - Grenoble 1 (UJF)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Aix Marseille Université (AMU), Laboratoire d'Annecy de Physique des Particules (LAPP/Laboratoire d'Annecy-le-Vieux de Physique des Particules), Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF)-Université Grenoble Alpes (UGA)-Commissariat à l'Énergie Atomique et aux Énergies Alternatives (CEA) - Grenoble, and Université Joseph Fourier - Grenoble 1 (UJF)-Commissariat à l'Énergie Atomique et aux Énergies Alternatives (CEA) - Grenoble-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA)
Subjects: Particle physics, Physics and Astronomy (miscellaneous), FOS: Physical sciences, 7. Clean energy, 01 natural sciences, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Rapidity, ddc:530, 010306 general physics, Nuclear Experiment, Engineering (miscellaneous), Quantum chromodynamics, Physics, Muon, 010308 nuclear & particles physics, High Energy Physics::Phenomenology, HERA, Vertex (geometry), Pseudorapidity, Physique des particules élémentaires, High Energy Physics::Experiment, Vertex detector, Impact parameter
Abstract: Measurements of cross sections for beauty and charm events with dijets and a muon in the photoproduction regime at HERA are presented. The data were collected with the H1 detector and correspond to an integrated luminosity of 179 pb^{-1}. Events with dijets of transverse momentum P_T^{jet1} > 7 GeV and P_T^{jet2} > 6 GeV in the pseudorapidity range -1.5< ��^{jet} < 2.5 in the laboratory frame are selected in the kinematic region of photon virtuality Q^2 < 2.5 GeV^2 and inelasticity 0.2 < y < 0.8. One of the two selected jets must be associated to a muon with P_T^�� > 2.5 GeV in the pseudorapidity range -1.3 < ��^�� < 1.5. The fractions of beauty and charm events are determined using the impact parameters of the muon tracks with respect to the primary vertex and their transverse momentum relative to the axis of the associated jet. Both variables are reconstructed using the H1 vertex detector. The measurements are in agreement with QCD predictions at leading and next-to-leading order., 32 pages, 8 figures, 10 tables
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17 results on '"J. FELTESSE"'

1. Erratum to: Measurement of jet production cross sections in deep-inelastic ep scattering at HERA

2. Measurement of charged particle multiplicity distributions in DIS at HERA and its implication to entanglement entropy of partons

3. Measurement of exclusive $${\varvec{{{{\pi ^+\pi ^-}}}}}$$ and $${\varvec{{{{\rho ^0}}}}}$$ meson photoproduction at HERA

4. Determination of electroweak parameters in polarised deep-inelastic scattering at HERA

5. Search for QCD instanton-induced processes at HERA in the high- $$\pmb {Q^2}$$ Q 2 domain

6. Exclusive $$\rho ^0$$ ρ 0 meson photoproduction with a leading neutron at HERA

7. Diffractive open charm production in deep-inelastic scattering and photoproduction at HERA

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

9. Erratum to: Determination of the integrated luminosity at HERA using elastic QED compton events

10. Measurement of the azimuthal correlation between the most forward jet and the scattered positron in deep-inelastic scattering at HERA

11. Measurement of the inclusive ep scattering cross section at low Q 2 and x at HERA

12. Measurement of the charm and beauty structure functions using the H1 vertex detector at HERA

13. Measurement of photon production in the very forward direction in deep-inelastic scattering at HERA

14. Measurement of the diffractive longitudinal structure function $F_{L}^{D}$ at HERA

15. Measurement of charm and beauty jets in deep inelastic scattering at HERA

16. Measurement of Feynman- $$x$$ x spectra of photons and neutrons in the very forward direction in deep-inelastic scattering at HERA

17. Measurement of beauty and charm photoproduction using semi-muonic decays in dijet events at HERA

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17 results on '"J. FELTESSE"'

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