61 results on '"Grindhammer, Guenter"'
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2. What HERA may provide ?
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Jung, Hannes, De Roeck, Albert, Bartels, Jochen, Behnke, Olaf, Blumlein, Johannes, Brodsky, Stanley, Cooper-Sarkar, Amanda, Deak, Michal, Devenish, Robin, Diehl, Markus, Gehrmann, Thomas, Grindhammer, Guenter, Gustafson, Gosta, Khoze, Valery, Knutsson, Albert, Klein, Max, Krauss, Frank, Kutak, Krzysztof, Laenen, Eric, Lonnblad, Leif, Motyka, Leszek, Newman, Paul R., Olness, Fred, Pitzl, Daniel, Ruspa, Marta, Vera, Agustin Sabio, Salam, Gavin P., Schorner-Sadenius, Thomas, and Strikman, Mark
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High Energy Physics - Phenomenology - Abstract
More than 100 people participated in a discussion session at the DIS08 workshop on the topic What HERA may provide. A summary of the discussion with a structured outlook and list of desirable measurements and theory calculations is given., Comment: resulting from a discussion session at DIS08, 21 pages
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- 2008
3. Hadronic Final States and QCD: Summary
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Gehrmann, Thomas, Grindhammer, Guenter, O'Dell, Vivian, and Walczak, Roman
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High Energy Physics - Phenomenology - Abstract
A summary of new experimental results and recent theoretical developments discussed in the "Hadronic Final States and QCD" working group is presented., Comment: 16 pages, working group summary at Workshop on 'Deep Inelastic Scattering and Related Subjects' (DIS08), London, April 2008
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- 2008
4. Small x Phenomenology - summary of the 3rd Lund Small x Workshop in 2004
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The Small x Collaboration, Baranov, Jeppe R. Andersen Serguei, Bartels, Jochen, Barnafoldi, Gergely G., Chachamis, Grigorios, Collins, John, Grindhammer, Guenter, Gustafson, Goesta, Hansson, Magnus, Ingelman, Gunnar, Jung, Hannes, Joensson, Leif, Knutsson, Albert, Kowalski, Henri, Kutak, Krzysztof, Kyrieleis, Albrecht, Levai, Peter, Lipatov, Artem, Loennblad, Leif, Lublinsky, Michael, Marchesini, Giuseppe, Milcewicz, Izabela, Risler, Christiane, Sabio-Vera, Agustin, Sjoedahl, Malin, Stasto, Anna, Turnau, Jacek, Watt, Graeme, and Zotov, Nikolai
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High Energy Physics - Phenomenology - Abstract
A third workshop on small-x physics, within the Small-x Collaboration, was held in Hamburg in May 2004 with the aim of overviewing recent theoretical progress in this area and summarizing the experimental status., Comment: Edited by: Goesta Gustafson, Hannes Jung, Leif Joensson, Leif Loennblad
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- 2006
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5. Electroproduction of Dijets at Small Jet Separation
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Grindhammer, Guenter
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High Energy Physics - Experiment - Abstract
Dijet production in deep-inelastic scattering (DIS) in the range 150 < Q^2 < 35000 GeV^2 has been measured by the H1 collaboration using the Durham jet algorithm in the laboratory frame. QCD calculations in next-to-leading order (NLO) are found to give a good description of the data when requiring a small minimum jet separation, which selects a dijet sample containing 1/3 of DIS events in contrast to approximately 1/10 with more typical jet analyses., Comment: On behalf of the H1 collab., X International Workshop on Deep-Inelastic Scattering, DIS 2002, Cracow, 30 April - 4 May 2002, 4 pages, to be published in Acta Phys. Pol. B
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- 2002
6. Tests of QCD: Summary of DIS 2000
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Blair, Robert, Grindhammer, Günter, Klasen, Michael, and Krämer, Michael
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High Energy Physics - Phenomenology - Abstract
This summary of the working group 2 of DIS 2000 encompasses experimental and theoretical results of jet physics, open and bound state heavy flavour production, prompt photon production, next-to-leading order QCD calculations and beyond, instantons, fragmentation, event shapes, and power corrections, primarily from deep-inelastic scattering and photoproduction at HERA, but also from the LEP and Tevatron colliders., Comment: 16 pages, LaTeX, including 8 PostScript figures. Talk given at the 8th International Workshop on Deep-Inelastic Scattering (DIS2000), 25th-30th April 2000, Liverpool, England, to appear in the proceedings
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- 2000
7. Photon Structure
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Grindhammer, Guenter
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High Energy Physics - Experiment - Abstract
Large pT processes at HERA, initiated by almost real and by virtual photons, provide information on the structure of the photon. We report on the latest measurements of dijets and large pT particle production with the H1 detector. This includes a leading order determination of an effective virtual photon parton density, of the gluon density of the photon, and comparisons with models., Comment: 6 pages, 9 figures, submitted to Proc. ICHEP98, Vancouver, Canada, 22-30 July 1998
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- 1998
8. Measurement of Jet Production Cross Sections in Deep-inelastic ep Scattering at HERA
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H1 Collaboration, Andreev, Vladimir, Buniatyan, Armen, Reimer, Petr, Rizvi, Eram, Robmann, Peter, Roosen, Robert, Rostovtsev, Andrei, Rotaru, Marina, Salek, David, Sankey, David, Sauter, Michel, Sauvan, Emmanuel, Bylinkin, Alexander, Schmitt, Stefan, Schoeffel, Laurent, Schoening, Andre, Sefkow, Felix, Shushkevich, Stanislav, Soloviev, Yuri, Sopicki, Pawel, South, David, Spaskov, Vladimir, Specka, Arnd, Bystritskaya, Lena, Steder, Michael, Stella, Bruno, Straumann, Ulrich, Sykora, Tomas, Thompson, Paul, Traynor, Daniel, Truoel, Peter, Tsakov, Ivan, Tseepeldorj, Baatar, Valkarova, Alice, Campbell, Alan, Vallee, Claude, Van Mechelen, Pierre, Vazdik, Yakov, Wegener, Dietrich, Wuensch, Eberhard, Zacek, Jozef, Zhang, Zhiqing, Žlebcík, Radek, Zohrabyan, Hamlet, Zomer, Fabian, Cantun Avila, Karla Beatriz, Cerny, Karel, Chekelian, Vladimir, Contreras, J. Guillermo, Cvach, Jaroslav, Dainton, John, Baghdasaryan, Artem, Daum, Karin, Diaconu, Cristinel, Dobre, Monica, Dodonov, Vitaliy, Eckerlin, Guenter, Egli, Stephan, Elsen, Eckhard, Favart, Laurent, Fedotov, Alexandre, Feltesse, Joel, Begzsuren, Khurelbaatar, Ferencei, Jozef, Fleischer, Manfred, Fomenko, Alexander, Gabathuler, Erwin, Gayler, Joerg, Ghazaryan, Samvel, Goerlich, Lidia, Gogitidze, Nelly, Gouzevitch, Maxime, Grab, Christoph, Belousov, Anatoli S., Grebenyuk, Anastasia, Greenshaw, Timothy, Grindhammer, Guenter, Haidt, Dieter, Henderson, Robert, Hladky, Jan, Hoffmann, Dirk, Horisberger, Roland, Hreus, Tomas, Huber, Florian, Bolz, Arthur, Jacquet, Marie, Janssen, Xavier, Jung, Hannes, Kapichine, Mikhail, Katzy, Judith, Kiesling, Christian, Klein, Max, Kleinwort, Claus, Kogler, Roman, Kostka, Peter, Boudry, Vincent, Kretzschmar, Jan, Kruecker, Dirk, Krueger, Katja, Landon, Murrough, Lange, Wolfgang, Laycock, Paul, Lebedev, Andrei I., Levonian, Serguei V., Lipka, Katerina, List, Benno, Brandt, Gerhard, List, Jenny, Lobodzinski, Bogdan, Malinovski, Evgenij, Martyn, Hans-Ulrich, Maxfield, Steve, Mehta, Andrew, Meyer, Andreas, Meyer, Hinrich, Meyer, Joachim, Mikocki, Stanislav, Brisson, Violette, Morozov, Anatoli, Mueller, Katharina, Naumann, Thomas, Newman, Paul R., Niebuhr, Carsten, Nowak, Grazyna, Olsson, Jan-Erik, Ozerov, Dmitri, Pascaud, Christian, Patel, Girish, Britzger, Daniel, Perez, Emmanuelle, Petrukhin, Alexey, Picuric, Ivana, Pirumov, Hayk, Pitzl, Daniel, Placakyte, Ringaile, Polifka, Richard, Radescu, Voica, Raicevic, Natasa, Ravdandorj, Togoo, 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 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), Institut de Physique Nucléaire de Lyon (IPNL), 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), H1, 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), 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)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Aix Marseille Université (AMU), and H1 Collaboration
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perturbation theory [quantum chromodynamics] ,neutral current [deep inelastic scattering] ,pair production [jet] ,Breit frame [kinematics] ,Astrophysics::High Energy Astrophysical Phenomena ,FOS: Physical sciences ,lcsh:Astrophysics ,momentum transfer dependence ,transverse momentum dependence ,transverse momentum [jet] ,High Energy Physics - Experiment ,High Energy Physics - Experiment (hep-ex) ,High Energy Physics - Phenomenology (hep-ph) ,measured [differential cross section] ,lcsh:QB460-466 ,strong coupling ,[PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex] ,lcsh:Nuclear and particle physics. Atomic energy. Radioactivity ,ddc:530 ,deep inelastic scattering [positron p] ,colliding beams [electron p] ,electroproduction [jet] ,precision measurement ,Physics ,2 [higher-order] ,colliding beams [positron p] ,DESY HERA Stor ,High Energy Physics - Phenomenology ,[PHYS.HPHE]Physics [physics]/High Energy Physics - Phenomenology [hep-ph] ,H1 ,deep inelastic scattering [electron p] ,lcsh:QC770-798 ,High Energy Physics::Experiment ,+dijet+electron+anything%22">electron p --> dijet electron anything ,multiplicity [jet] ,coupling constant [strong interaction] ,+3jet+electron+anything%22">electron p --> 3jet electron anything ,1 [higher-order] ,+jet+electron+anything%22">electron p --> jet electron anything ,experimental results - Abstract
The European physical journal / C 77(4), 215(2017). doi:10.1140/epjc/s10052-017-4717-9, A precision measurement of jet cross sections in neutral current deep-inelastic scattering for photon virtualities $5.5 < Q^{2} < $80GeV$^2$ and inelasticities 0.2 < y < 0.6 is presented, using data taken with the H1 detector at HERA, corresponding to an integrated luminosity of 290pb$^{−1}$. Double-differential inclusive jet, dijet and trijet cross sections are measured simultaneously and are presented as a function of jet transverse momentum observables and as a function of Q$^2$. Jet cross sections normalised to the inclusive neutral current DIS cross section in the respective Q$^2$-interval are also determined. Previous results of inclusive jet cross sections in the range 150 < Q$^2$ < 15,000GeV$^2$ are extended to low transverse jet momenta 5 < $P^{jet}_{T}$ < 7GeV. The data are compared to predictions from perturbative QCD in next-to-leading order in the strong coupling, in approximate next-to-next-to-leading order and in full next-to-next-to-leading order. Using also the recently published H1 jet data at high values of Q$^2$, the strong coupling constant $\alpha_s$(MZ) is determined in next-to-leading order., Published by Springer, Berlin
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- 2017
9. Hard and Precision QCD @ HERA
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Grindhammer, Guenter
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20th High Energy Physics International Conference in Quantum Chromodynamics, QCD 17, Montpellier, Laboratoire Univers Particules Universite de Montpellier 2, France, 3 Jul 2017 - 7 Jul 2017
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- 2017
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10. Measurement of jet production cross sections in deep-inelastic ep scattering at HERA
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Andreev, Vladimir, Baghdasaryan, Artem, Begzsuren, Khurelbaatar, Belousov, Anatoli, Bolz, Arthur, Boudry, Vincent, Brandt, Gerhard, Brisson, Violette, Britzger, Daniel, Buniatyan, Armen, Bylinkin, Alexander, Bystritskaya, Lena, Campbell, Alan, Cantun~Avila, Avila,~Karla~Beatriz, Cerny, Karel, Chekelian, Vladimir, Contreras, Guillermo, Cvach, Jaroslav, Dainton, John, Daum, Karin, Diaconu, Cristinel, Dobre, Monica, Dodonov, Vitaliy, Eckerlin, Guenter, Egli, Stephan, Elsen, Eckhard, Favart, Laurent, Fedotov, Alexandre, Feltesse, Joel, Ferencei, Jozef, Fleischer, Manfred, Fomenko, Alexander, Gabathuler, Erwin, Gayler, Joerg, Ghazaryan, Samvel, Goerlich, Lidia, Gogitidze, Nelly, Gouzevitch, Maxime, Grab, Christoph, Grebenyuk, Anastasia, Greenshaw, Timothy, Grindhammer, Guenter, Haidt, Dieter, Henderson, Rob C. W., Hladky, Jan, Hoffmann, Dirk, Horisberger, Roland, Hreus, Tomas, Huber, Florian, Jacquet, Marie, Janssen, Xavier, Jung, Hannes, Kapichine, Mikhail, Katzy, Judith, Kiesling, Christian, Klein, Max, Kleinwort, Claus, Kogler, Roman, Kostka, Peter, Kretzschmar, Jan, Kruecker, Dirk, Krueger, Katja, Landon, Murrough, Lange, Wolfgang, Laycock, Paul, Lebedev, Andrei, Levonian, Sergey, Lipka, Katerina, List, Benno, List, Jenny, Lobodzinski, Bogdan, Malinovski, Evgenij, Martyn, Hans-Ulrich, Maxfield, Steve J., Mehta, Andrew, Meyer, Andreas, Meyer, Hinrich, Meyer, Joachim, Mikocki, Stanislav, Morozov, Anatoly, Mueller, Katharina, Naumann, Thomas, Newman, Paul R., Niebuhr, Carsten, Nowak, Grazyna, Olsson, Jan~Erik, Ozerov, Dmitri, Pascaud, Christian, Patel, Girish, Perez, Emmanuelle, Petrukhin, Alexey, Picuric, Ivana, Pirumov, Hayk, Pitzl, Daniel, Placakyte, Ringaile, Polifka, Richard, Radescu, Voica, Raicevic, Natasa, Ravdandorj, Togoo, Reimer, Petr, Rizvi, Eram, Robmann, Peter, Roosen, Robert, Rostovtsev, Andrei, Rotaru, Marina, Salek, David, Sankey, Dave P. C., Sauter, Michel, Sauvan, Emmanuel, Schmitt, Stefan, Schoeffel, Laurent, Schoening, Andre, Sefkow, Felix, Shushkevich, Stanislav, Soloviev, Yuri, Sopicki, Pawel, South, David, Spaskov, Vladimir, Specka, Arnd, Steder, Michael, Stella, Bruno, Straumann, Ulrich, Sykora, Tomas, Thompson, Paul, Traynor, Daniel, Truoel, Peter, Tsakov, Ivan, Tseepeldorj, Baatar, Valkarova, Alice, Vallee, Claude, VanMechelen, Pierre, Vazdik, Iakov, Wegener, Dietrich, Wuensch, Eberhard, Zacek, Jozef, Zhang, Zhiqing, Zlebcik, Radek, and Zohrabyan, Hamlet
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electron p: deep inelastic scattering ,kinematics: Breit frame ,jet: multiplicity ,jet: transverse momentum ,+3jet+electron+anything%22">electron p --> 3jet electron anything ,momentum transfer dependence ,transverse momentum dependence ,differential cross section: measured ,+jet+electron+anything%22">electron p --> jet electron anything ,jet: electroproduction ,strong interaction: coupling constant ,+dijet+electron+anything%22">electron p --> dijet electron anything ,strong coupling ,quantum chromodynamics: perturbation theory ,positron p: deep inelastic scattering ,precision measurement ,higher-order: 2 ,higher-order: 1 ,deep inelastic scattering: neutral current ,positron p: colliding beams ,DESY HERA Stor ,electron p: colliding beams ,H1 ,jet: pair production ,experimental results - Abstract
The European physical journal / C 77(4), 215 (2017). doi:10.1140/epjc/s10052-017-4717-9, Published by Springer, Berlin ; Heidelberg
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- 2017
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11. Search for QCD instanton-induced processes at HERA in the high- $\pmb {Q^2}$ domain
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Andreev, Vladimir, Baghdasaryan, Artem, Begzsuren, Khurelbaatar, Belousov, Anatoli, Bolz, Arthur, Boudry, Vincent, Brandt, Gerhard, Brisson, Violette, Britzger, Daniel, Buniatyan, Armen, Bylinkin, Alexander, Bystritskaya, Lena, Campbell, Alan, Cantun Avila, Karla Beatriz, Cerny, Karel, Chekelian, Vladimir, Contreras, Guillermo, Cvach, Jaroslav, Dainton, John, Daum, Karin, Diaconu, Cristinel, Dobre, Monica, Dodonov, Vitaliy, Eckerlin, Guenter, Egli, Stephan, Elsen, Eckhard, Favart, Laurent, Fedotov, Alexandre, Feltesse, Joel, Ferencei, Jozef, Fleischer, Manfred, Fomenko, Alexander, Gabathuler, Erwin, Gayler, Joerg, Ghazaryan, Samvel, Goerlich, Lidia, Gogitidze, Nelly, Gouzevitch, Maxime, Grab, Christoph, Grebenyuk, Anastasia, Greenshaw, Timothy, Grindhammer, Guenter, Haidt, Dieter, Henderson, Rob C. W., Hladky, Jan, Hoffmann, Dirk, Horisberger, Roland, Hreus, Tomas, Huber, Florian, Jacquet, Marie, Janssen, Xavier, Jung, Hannes, Kapichine, Mikhail, Katzy, Judith, Kiesling, Christian, Klein, Max, Kleinwort, Claus, Kogler, Roman, Kostka, Peter, Kretzschmar, Jan, Krücker, Dirk, Krüger, K., Landon, Murrough, Lange, Wolfgang, Laycock, Paul, Lebedev, Andrei, Levonian, Sergey, Lipka, Katerina, List, Benno, List, Jenny, Lobodzinski, Bogdan, Malinovski, Evgenij, Martyn, Hans-Ulrich, Maxfield, Steve J., Mehta, Andrew, Meyer, Andreas, Meyer, Hinrich, Meyer, Joachim, Mikocki, Stanislav, Morozov, Anatoly, Müller, Katharina, Naumann, Thomas, Newman, Paul R., Niebuhr, Carsten, Nowak, Grazyna, Olsson, Jan Erik, Ozerov, Dmitri, Pascaud, Christian, Patel, Girish, Perez, Emmanuelle, Petrukhin, Alexey, Picuric, Ivana, Pirumov, Hayk, Pitzl, Daniel, Placakyte, Ringaile, Pokorny, Boris, Polifka, Richard, Radescu, Voica, Raicevic, Natasa, Ravdandorj, Togoo, Reimer, Petr, Rizvi, Eram, Robmann, Peter, Roosen, Robert, Rostovtsev, Andrei, Rotaru, Marina, Rusakov, Serguei, Salek, David, Sankey, Dave P. C., Sauter, Michel, Sauvan, Emmanuel, Schmitt, Stefan, Schoeffel, Laurent, Schöning, Andre, Sefkow, Felix, Shushkevich, Stanislav, Soloviev, Yuri, Sopicki, Pawel, South, David, Spaskov, Vladimir, Specka, Arnd, Steder, Michael, Stella, Bruno, Straumann, Ulrich, Sykora, Tomas, Thompson, Paul, Traynor, Daniel, Truöl, Peter, Tsakov, Ivan, Tseepeldorj, Baatar, Turnau, Jacek, Valkarova, Alice, Vallee, Claude, Van Mechelen, Pierre, Vazdik, Iakov, Wegener, Dietrich, Wünsch, Eberhard, Zacek, Jozef, Zhang, Zhiqing, Zlebcik, Radek, Zohrabyan, Hamlet, and Zomer, Fabian
- Abstract
25 Seiten : Illustrationen (2016).
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- 2016
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12. Exclusive $\rho^0$ Meson Photoproduction with a Leading Neutron at HERA
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H1 Collaboration, Andreev, Vladimir, Buniatyan, Armen, Reimer, Petr, Rizvi, Eram, Robmann, Peter, Roosen, Robert, Rostovtsev, Andrei, Rotaru, Marina, Rusakov, Serguei V., Salek, David, Sankey, David, Sauter, Michel, Bylinkin, Alexander, Sauvan, Emmanuel, Schmitt, Stefan, Schoeffel, Laurent, Schoening, Andre, Sefkow, Felix, Shushkevich, Stanislav, Soloviev, Yuri, Sopicki, Pawel, South, David, Spaskov, Vladimir, Bystritskaya, Lena, Specka, Arnd, Steder, Michael, Stella, Bruno, Straumann, Ulrich, Sykora, Tomas, Thompson, Paul, Traynor, Daniel, Truoel, Peter, Tsakov, Ivan, Tseepeldorj, Baatar, Campbell, Alan, Turnau, Jacek, Valkarova, Alice, Vallee, Claude, Van Mechelen, Pierre, Vazdik, Yakov, Wegener, Dietrich, Wuensch, Eberhard, Zacek, Jozef, Zhang, Zhiqing, Žlebcík, Radek, Cantun Avila, Karla Beatriz, Zohrabyan, Hamlet, Zomer, Fabian, Cerny, Karel, Chekelian, Vladimir, Contreras, J. Guillermo, Cvach, Jaroslav, Dainton, John, Baghdasaryan, Artem, Daum, Karin, Diaconu, Cristinel, Dobre, Monica, Dodonov, Vitaliy, Eckerlin, Guenter, Egli, Stephan, Elsen, Eckhard, Favart, Laurent, Fedotov, Alexandre, Feltesse, Joel, Begzsuren, Khurelbaatar, Ferencei, Jozef, Fleischer, Manfred, Fomenko, Alexander, Gabathuler, Erwin, Gayler, Joerg, Ghazaryan, Samvel, Goerlich, Lidia, Gogitidze, Nelly, Gouzevitch, Maxime, Grab, Christoph, Belousov, Anatoli S., Grebenyuk, Anastasia, Greenshaw, Timothy, Grindhammer, Guenter, Haidt, Dieter, Henderson, Robert, Hladky, Jan, Hoffmann, Dirk, Horisberger, Roland, Hreus, Tomas, Huber, Florian, Bolz, Arthur, Jacquet, Marie, Janssen, Xavier, Jung, Hannes, Kapichine, Mikhail, Kiesling, Christian, Klein, Max, Kleinwort, Claus, Kogler, Roman, Kostka, Peter, Kretzschmar, Jan, Boudry, Vincent, Krueger, Katja, Landon, Murrough, Lange, Wolfgang, Laycock, Paul, Lebedev, Andrei I., Levonian, Serguei V., Lipka, Katerina, List, Benno, List, Jenny, Lobodzinski, Bogdan, Brandt, Gerhard, Malinovski, Evgenij, Martyn, Hans-Ulrich, Maxfield, Steve, Mehta, Andrew, Meyer, Andreas, Meyer, Hinrich, Meyer, Joachim, Mikocki, Stanislav, Morozov, Anatoli, Mueller, Katharina, Brisson, Violette, Naumann, Thomas, Newman, Paul R., Niebuhr, Carsten, Nowak, Grazyna, Olsson, Jan-Erik, Ozerov, Dmitri, Pascaud, Christian, Patel, Girish, Perez, Emmanuelle, Petrukhin, Alexey, Britzger, Daniel, Picuric, Ivana, Pirumov, Hayk, Pitzl, Daniel, Placakyte, Ringaile, Pokorny, Boris, Polifka, Richard, Povh, Bogdan, Radescu, Voica, Raicevic, Natasa, Ravdandorj, Togoo, Centre de Physique des Particules de Marseille (CPPM), 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), 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 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), Institut de Physique Nucléaire de Lyon (IPNL), 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), H1, 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), 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), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), and Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)
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High Energy Physics - Phenomenology ,Nuclear Theory ,[PHYS.NUCL]Physics [physics]/Nuclear Theory [nucl-th] ,[PHYS.HPHE]Physics [physics]/High Energy Physics - Phenomenology [hep-ph] ,[PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex] ,ddc:530 ,High Energy Physics::Experiment ,[PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex] ,Nuclear Experiment ,High Energy Physics - Experiment - 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 $\gamma p \to \rho^0 n \pi^+$ 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, $\sigma^{\rm el}(\gamma\pi^+ \to \rho^0\pi^+)$, is extracted. The value of this cross section indicates significant absorptive corrections for the exclusive reaction $\gamma p\to\rho^0 n \pi^+$., Comment: 38 pages, 13 figures, 10 tables, this version accepted by EPJC
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- 2016
13. Search for QCD instanton-induced processes at HERA in the high-$Q^2$ Domain
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H1 Collaboration, Andreev, Vladimir, Buniatyan, Armen, Ravdandorj, Togoo, Reimer, Petr, Rizvi, Eram, Robmann, Peter, Roosen, Robert, Rostovtsev, Andrei, Rotaru, Marina, Rusakov, Serguei V., Salek, David, Sankey, David, Bylinkin, Alexander, Sauter, Michel, Sauvan, Emmanuel, Schmitt, Stefan, Schoeffel, Laurent, Schoening, Andre, Sefkow, Felix, Shushkevich, Stanislav, Soloviev, Yuri, Sopicki, Pawel, South, David, Bystritskaya, Lena, Spaskov, Vladimir, Specka, Arnd, Steder, Michael, Stella, Bruno, Straumann, Ulrich, Sykora, Tomas, Thompson, Paul, Traynor, Daniel, Truoel, Peter, Tsakov, Ivan, Campbell, Alan, Tseepeldorj, Baatar, Turnau, Jacek, Valkarova, Alice, Vallee, Claude, Van Mechelen, Pierre, Vazdik, Yakov, Wegener, Dietrich, Wuensch, Eberhard, Zacek, Jozef, Zhang, Zhiqing, Cantun Avila, Karla Beatriz, Žlebcík, Radek, Zohrabyan, Hamlet, Zomer, Fabian, Cerny, Karel, Chekelian, Vladimir, Contreras, J. Guillermo, Cvach, Jaroslav, Dainton, John, Baghdasaryan, Artem, Daum, Karin, Diaconu, Cristinel, Dobre, Monica, Dodonov, Vitaliy, Eckerlin, Guenter, Egli, Stephan, Elsen, Eckhard, Favart, Laurent, Fedotov, Alexandre, Feltesse, Joel, Begzsuren, Khurelbaatar, Ferencei, Jozef, Fleischer, Manfred, Fomenko, Alexander, Gabathuler, Erwin, Gayler, Joerg, Ghazaryan, Samvel, Goerlich, Lidia, Gogitidze, Nelly, Gouzevitch, Maxime, Grab, Christoph, Belousov, Anatoli S., Grebenyuk, Anastasia, Greenshaw, Timothy, Grindhammer, Guenter, Haidt, Dieter, Henderson, Robert, Hladky, Jan, Hoffmann, Dirk, Horisberger, Roland, Hreus, Tomas, Huber, Florian, Bolz, Arthur, Jacquet, Marie, Janssen, Xavier, Jung, Hannes, Kapichine, Mikhail, Katzy, Judith, Kiesling, Christian, Klein, Max, Kleinwort, Claus, Kogler, Roman, Kostka, Peter, Boudry, Vincent, Kretzschmar, Jan, Kruecker, Dirk, Krueger, Katja, Landon, Murrough, Lange, Wolfgang, Laycock, Paul, Lebedev, Andrei I., Levonian, Serguei V., Lipka, Katerina, List, Benno, Brandt, Gerhard, List, Jenny, Lobodzinski, Bogdan, Malinovski, Evgenij, Martyn, Hans-Ulrich, Maxfield, Steve, Mehta, Andrew, Meyer, Andreas, Meyer, Hinrich, Meyer, Joachim, Mikocki, Stanislav, Brisson, Violette, Morozov, Anatoli, Mueller, Katharina, Naumann, Thomas, Newman, Paul R., Niebuhr, Carsten, Nowak, Grazyna, Olsson, Jan-Erik, Ozerov, Dmitri, Pascaud, Christian, Patel, Girish, Britzger, Daniel, Perez, Emmanuelle, Petrukhin, Alexey, Picuric, Ivana, Pirumov, Hayk, Pitzl, Daniel, Placakyte, Ringaile, Pokorny, Boris, Polifka, Richard, Radescu, Voica, Raicevic, Natasa, 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), 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 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), 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), 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), Université Claude Bernard Lyon 1 (UCBL), and 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)
- Subjects
experimental methods ,neutral current [deep inelastic scattering] ,[PHYS.HLAT]Physics [physics]/High Energy Physics - Lattice [hep-lat] ,High Energy Physics::Lattice ,Physics ,photon ,High Energy Physics - Lattice (hep-lat) ,High Energy Physics::Phenomenology ,FOS: Physical sciences ,scattering [electron p] ,High Energy Physics - Experiment ,hadronic [final state] ,High Energy Physics - Phenomenology ,DESY HERA Stor ,High Energy Physics - Experiment (hep-ex) ,High Energy Physics - Lattice ,High Energy Physics - Phenomenology (hep-ph) ,kinematics ,[PHYS.HPHE]Physics [physics]/High Energy Physics - Phenomenology [hep-ph] ,quantum chromodynamics ,[PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex] ,instanton ,High Energy Physics::Experiment ,ddc:530 ,experimental results - 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., 23 pages, 9 figures, this version accepted by EPJC
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- 2016
14. Measurement of Jet Production Cross Sections in Deep-inelastic $ep$ Scattering at HERA
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Andreev, Vladimir, Baghdasaryan, Artem, Begzsuren, Khurelbaatar, Belousov, Anatoli S., Bolz, Arthur, Boudry, Vincent, Brandt, Gerhard, Brisson, Violette, Britzger, Daniel, Buniatyan, Armen, Bylinkin, Alexander, Bystritskaya, Lena, Campbell, Alan, Cantun Avila, Karla Beatriz, Cerny, Karel, Chekelian, Vladimir, Contreras, J. Guillermo, Cvach, Jaroslav, Dainton, John, Daum, Karin, Diaconu, Cristinel, Dobre, Monica, Dodonov, Vitaliy, Eckerlin, Guenter, Egli, Stephan, Elsen, Eckhard, Favart, Laurent, Fedotov, Alexandre, Feltesse, Joel, Ferencei, Jozef, Fleischer, Manfred, Fomenko, Alexander, Gabathuler, Erwin, Gayler, Joerg, Ghazaryan, Samvel, Goerlich, Lidia, Gogitidze, Nelly, Gouzevitch, Maxime, Grab, Christoph, Grebenyuk, Anastasia, Greenshaw, Timothy, Grindhammer, Guenter, Haidt, Dieter, Henderson, Robert, Hladky, Jan, Hoffmann, Dirk, Horisberger, Roland, Hreus, Tomas, Huber, Florian, Jacquet, Marie, Janssen, Xavier, Jung, Hannes, Kapichine, Mikhail, Katzy, Judith, Kiesling, Christian, Klein, Max, Kleinwort, Claus, Kogler, Roman, Kostka, Peter, Kretzschmar, Jan, Kruecker, Dirk, Krueger, Katja, Landon, Murrough, Lange, Wolfgang, Laycock, Paul, Lebedev, Andrei I., Levonian, Serguei V., Lipka, Katerina, List, Benno, List, Jenny, Lobodzinski, Bogdan, Malinovski, Evgenij, Martyn, Hans-Ulrich, Maxfield, Steve, Mehta, Andrew, Meyer, Andreas, Meyer, Hinrich, Meyer, Joachim, Mikocki, Stanislav, Morozov, Anatoli, Mueller, Katharina, Naumann, Thomas, Newman, Paul R., Niebuhr, Carsten, Nowak, Grazyna, Olsson, Jan-Erik, Ozerov, Dmitri, Pascaud, Christian, Patel, Girish, Perez, Emmanuelle, Petrukhin, Alexey, Picuric, Ivana, Pirumov, Hayk, Pitzl, Daniel, Placakyte, Ringaile, Polifka, Richard, Radescu, Voica, Raicevic, Natasa, Ravdandorj, Togoo, Reimer, Petr, Rizvi, Eram, Robmann, Peter, Roosen, Robert, Rostovtsev, Andrei, Rotaru, Marina, Salek, David, Sankey, David, Sauter, Michel, Sauvan, Emmanuel, Schmitt, Stefan, Schoeffel, Laurent, Schoening, Andre, Sefkow, Felix, Shushkevich, Stanislav, Soloviev, Yuri, Sopicki, Pawel, South, David, Spaskov, Vladimir, Specka, Arnd, Steder, Michael, Stella, Bruno, Straumann, Ulrich, Sykora, Tomas, Thompson, Paul, Traynor, Daniel, Truoel, Peter, Tsakov, Ivan, Tseepeldorj, Baatar, Valkarova, Alice, Vallee, Claude, Van Mechelen, Pierre, Vazdik, Yakov, Wegener, Dietrich, Wuensch, Eberhard, Zacek, Jozef, Zhang, Zhiqing, Žlebcík, Radek, Zohrabyan, Hamlet, and Zomer, Fabian
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GeneralLiterature_INTRODUCTORYANDSURVEY ,ComputingMethodologies_SYMBOLICANDALGEBRAICMANIPULATION ,ComputingMethodologies_DOCUMENTANDTEXTPROCESSING ,GeneralLiterature_MISCELLANEOUS - Abstract
Berlin : Springer (2016)., A precision measurement of jet cross sections in neutral current deep-inelastic scattering for photon virtualities $\it 5.5 < Q^{72} < 80GeV^{2}$ and inelasticities $\it 0.2 < y < 0.6$ is presented, using data taken with the H1 detector at HERA, corresponding to an integrated luminosity of $290 pb^{−1}$. Double-differential inclusive jet, dijet and trijet cross sections are measured simultaneously and are presented as a function of jet transverse momentum observables and as a function of $\it Q^{2}$. Jet cross sections normalised to the inclusive neutral current DIS cross section in the respective $\it Q^{2}$-interval are also determined. Previous results of inclusive jet cross sections in the range $\it 150 < Q^{2} < 15 000GeV^{2}$ are extended to low transverse jet momenta $\it 5 < P^{jet}_{T} < 7GeV$. The data are compared to predictions from perturbative QCD in next-to-leading order in the strong coupling, in approximate next-to-next-to-leading orderand in full next-to-next-to-leading order. Using also the recently published H1 jet data at high values of $Q^{2}$, the strong coupling constant $\it \alpha_{s}(MZ)$ is determined in next-to-leading order., Published by Springer, Berlin
- Published
- 2016
- Full Text
- View/download PDF
15. Measurement of Inclusive ep Cross Sections at High $Q^{2}$ at $\sqrt{s}$ = 225 and 252 GeV and of the Longitudinal Proton Structure Function $\textit{F}_{\textit{L}}$ at HERA
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Andreev, Vladimir, Baghdasaryan, Artem, Britzger, Daniel, Patel, Girish D., Perez, Emmanuelle, Petrukhin, Alexey, Picuric, Ivana, Pirumov, Hayk, Pitzl, D., Placakyte, Ringaile, Pokorny, Boris, Polifka, Richard, Radescu, Voica, Buniatyan, A., Raicevic, Natasa, Raspereza, A., Ravdandorj, T., Reimer, Petr, Rizvi, Eram, Robmann, Peter, Roosen, Robert, Rostovtsev, Andrei, Rotaru, Marina, Rusakov, Serguei V., Bylinkin, Alexander, Salek, David, Sankey, Dave P. C., Sauter, M., Sauvan, Emmanuel, Schmitt, Stefan, Schoeffel, Laurent, Schoening, Andre, Schultz-Coulon, Hans-Christian, Sefkow, F., Shushkevich, Stanislav, Bystritskaya, Lena, Soloviev, Yuri, Sopicki, P., South, David, Spaskov, Vladimir, Specka, Arnd, Steder, Michael, Stella, Bruno, Straumann, Ulrich, Sykora, T., Thompson, Paul D. l ., Campbell, A. J., Traynor, Daniel, Truoel, Peter, Tsakov, Ivan, Tseepeldorj, B., Turnau, Jacek, Valkarova, Alice, Vallee, Claude, Van Mechelen, Pierre, Vazdik, Yakov, Wegener, Dietrich, Cantun Avila, Karla Beatriz, Wuensch, Eberhard, Zacek, Jozef, Zhang, Zhiqing, Zlebcik, Radek, Zohrabyan, H., Zomer, Fabian, H1 Collaboration, Ceccopieri, Federico Alberto, Cerny, Karel, Chekelian, Vladimir, Contreras, J. Guillermo, Baghdasaryan, Samvel, Dainton, John B., Daum, Karin, De Wolf, E. A., Diaconu, Cristinel, Dobre, M., Dodonov, Vitaliy, Dossanov, Aziz, Dubak, Ana, Eckerlin, G., Egli, Stephan, Begzsuren, Khurelbaatar, Elsen, E., Favart, Laurent, Fedotov, Alexandre, Feltesse, Joel, Ferencei, J., Fleischer, M., Fomenko, A., Gabathuler, Erwin, Gayler, J., Ghazaryan, Samvel, Belousov, Anatoli S., Glazov, Alexandre, Goerlich, Lidia, Gogitidze, Nelly, Gouzevitch, Maxime, Grab, Christoph, Grebenyuk, Anastasia, Greenshaw, Timothy, Grindhammer, Guenter, Habib, Shiraz, Haidt, D., Belov, P., Henderson, R. C. W., Herbst, M., Hildebrandt, M., Hladky, J., Hoffmann, Dirk, Horisberger, Roland, Hreus, Tomas, Huber, Florian, Jacquet, Marie, Janssen, Xavier, Boudry, Vincent, Jung, Andreas Werner, Jung, Hannes, Kapichine, Mikhail, Kiesling, Christian, Klein, Max, Kleinwort, C., Kogler, R., Kostka, P., Kretzschmar, Jan, Krueger, Katja, Brandt, Gerhard, Landon, Murrough P. J., Lange, W., Laycock, Paul, Lebedev, Andrei I., Levonian, Serguei V., Lipka, K., List, B., List, J., Lobodzinski, Bogdan, Lubimov, Valentin, Brinkmann, M., Malinovski, Evgenij, Martyn, Hans-Ulrich, Maxfield, Steve J., Mehta, Andrew, Meyer, A. B., Meyer, Hinrich, Meyer, J., Mikocki, Stanislav, Morozov, Anatoli, Mueller, Katharina, Brisson, Violette, Naumann, Th., Newman, Paul R., Niebuhr, C., Nowak, Grazyna, Nowak, Krzysztof, Olivier, B., Olsson, J. E., Ozerov, Dmitri, Pahl, P., and Pascaud, Christian
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DESY HERA Stor ,structure function: longitudinal [p] ,neutral current ,measured [differential cross section] ,deep inelastic scattering [electron p] ,H1 ,High Energy Physics::Experiment ,ddc:530 ,252 GeV-cms [225] ,Nuclear Experiment ,momentum transfer dependence ,x-dependence ,experimental results - 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 Ep = 460 and 575 GeV corresponding to centre-of-mass energies of 225 and 252 GeV, respectively. The measurements cover the region of 6.5 *10^{-4}
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- 2014
16. Precision Jet Measurements and Determination of $\alpha$S ($M_{Z}$) by H1 @ HERA
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Grindhammer, Guenter
- Published
- 2014
17. Proceedings, 15th International Workshop on Deep-inelastic scattering and related subjects
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Grindhammer, Guenter, Sachs, Kirsten, Grindhammer, Guenter, and Sachs, Kirsten
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small-x ,book ,conference: Munich 2007/04/16 ,strong interaction [coupling constant] ,deep inelastic scattering ,structure function ,quantum chromodynamics ,diffraction ,heavy quark ,coupling constant: strong interaction ,Munich 2007/04/16 [conference] ,vector meson - Abstract
5th International Workshop on Deep-Inelastic Scattering and Related Subjects, DIS 2007, Hamburg, Germany, 16 Apr 2007 - 20 Apr 2007 ; (2007). doi:10.3204/proc07-01, Published by Deutsches Elektronen-Synchrotron, DESY, Hamburg
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- 2007
- Full Text
- View/download PDF
18. Precision QCD @ HERA: Determination of the charm quark mass and $\alpha_{s}(M_{Z})$
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Grindhammer, Guenter
- Subjects
High Energy Physics::Phenomenology ,High Energy Physics::Experiment - Abstract
The following topics will be briefly addressed here: the impact of including the combined charm data from H1 and ZEUS on the HERA parton distribution functions (PDFs) from deep-inelastic scattering (DIS), the extraction of the charm quark mass within dierent variants of next-to-leading order (NLO) QCD calculations, and the signicance this has for the Z and $W\pm$ cross section predictions at the LHC. Furthermore, the effectof including jet data from H1 and ZEUS on the HERA PDFs are discussed, including an extraction of $\alpha_{}$s $\it (M_{Z})$. Finally, latest results on the production of inclusive jets in photoproduction (PHP) and on multi-jets in DIS, and the values of $\alpha_{s}$ $\it(M_{Z})$ extracted from them, are presented.
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- 2013
19. Recent HERA Results on Forward Physics
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Grindhammer, Guenter
- Published
- 2012
20. Electron deuteron scattering with HERA, a letter of intent for an experimental programme with the H1 detector
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Alexopoulos, T., Andreev, V., Aschenauer, E., Babaev, A., Backovic, S., Baranov, P., Barber, D., Belostotsky, S., Belousov, A., Bianchi, N., Bracinik, J., Brisson, V., Bruncko, D., Bunyatyan, A., Bystritskaya, L., Campbell, A. J., Shevyakov, I., Shtarkov, L., Ciullo, G., Contalbrigo, M., Contreras, J. G., Dainton, J. B., Dalpiaz, P., Danilov, M., Daum, K., De Sanctis, E., De Wolf, E. A., Di Nezza, P., Dodonov, V., Dris, M., Dubak, A., Efremenko, V., Eliseev, A., Esenov, S., Fantoni, A., Fedotov, A., Ferencei, J., Fomenko, A., Gavrilov, G., Gayler, Joerg, Gerhards, R., Ghazarian, S., Glazov, A. A., Goerlich, L., Gogitidze, N., Gorbov, L., Gorbunov, S., Grebenyuk, O., Greenshaw, T., Grindhammer, Guenter, Gustafson, G., Guzey, V., Haas, Tobias M., Hajduk, L., Haller, J., Haynes, W. J., Herynek, I., Hiller, K. H., Hovhannisyan, A., Ingelman, G., Jacquet, M., Jgoun, A., Jonsson, L., Jung, H., Kabuss, E., Kalburov, S., Kapishin, M., Karlsson, M., Kekelidze, V., Kenyon, I. R., Kiesling, Christian M., Kinney, E., Kiryushin, Y., Kiselev, A., Klein, M., Kostka, P., Knutsson, A., Kropivnitskaya, A., Kuhn, S. E., Lange, W., Lastovicka, T., Lebedev, A., Lendermann, V., Lenisa, P., Levonian, S., Lipka, K., Lobodzinska, E., Lonnblad, L., Loktionova, N., Lopez-Fernandez, R., Lundberg, B., Lytkin, L., Lubimov, V., Ma, B. Q., Makins, N., Malinovsky, E., Martyn, H. U., Martyniak, J., Medin, G., Mehta, A., Melnitchouk, W., Meyer, J., Mishin, S., Mikocki, S., Milstead, D., Mjornmark, U., Morozov, A., Muccifora, V., Murin, P., Nagovitsyn, V., Naryshkin, Yu., Naumann, T., Newman, Paul R., Niebuhr, C., Nikiforov, A., Nikitin, D., Nowak, G., Nowak, W. D., Olivier, B., Olsson, J. E., Usik, A., Ozerov, D., Pascaud, C., Patel, G. D., Peng, J. C., Pitzl, D., Povh, B., Raicevic, N., Reimer, P., Rith, K., Rizvi, E., Roosen, R., Rostovtsev, A., Rusakov, S., Sanjiev, I., Schilling, F. P., Schroder, V., Shekelian, V., Sjostrand, T., Sloan, T., Smirnov, P., Solovev, Yu., Soskov, V., Spaskov, V., Stella, B., Stewart, J., Stosslein, U., Cholakov, V., Thompson, Graham, Thompson, P., Traynor, D., Tsakov, I., Tsipolitis, Y., Tsurin, I., Turnau, J., Tytgat, M., Tzamariudaki, E., Uraev, A., Valkarova, A., Van Mechelen, P., Vazdik, Ya., Vikhrov, V., Vogt, M., Volchinsky, V., Wallny, R., Zacek, J., Zalesak, J., Zhang, Z., Zhelezov, A., Zhokin, A., and Zomer, F.
- Subjects
colliding beams [electron deuteron] ,perturbation theory [quantum chromodynamics] ,small-x ,generalized parton distribution ,momentum spectrum [quark] ,diffraction ,proposed experiment: DESY HERA Stor ,electron deuteron: colliding beams ,upgrade: proposed ,calorimeter: readout ,nonperturbative ,structure function [nucleon] ,momentum spectrum [gluon] ,strong interaction: coupling constant ,quark: recombination ,proposed [upgrade] ,spin [photon] ,quantum chromodynamics: perturbation theory ,numerical calculations ,polarization ,photon: spin ,recombination [quark] ,high [momentum transfer] ,gluon: momentum spectrum ,bibliography ,nucleon: structure function ,quark: momentum spectrum ,DESY HERA Stor [proposed experiment] ,valence [quark] ,H1 ,proportional chamber ,quark: valence ,proposal ,semiconductor detector ,nucleon: spin ,shadowing ,readout [calorimeter] ,spin [nucleon] ,coupling constant [strong interaction] ,momentum transfer: high - Abstract
97 pp. (2003)., This document outlines the case for a programme of electron-deuteron scattering mea- surements at HERA using the H1 detector. The goals of the $e^\pm D$ programme are to map the partonic structure of the nucleon at large $Q^2$ and low $x$, to explore the valence quark distributions at the highest $x$ values, to provide a precise measurement of the strong coupling constant and to investigate the parton recombination phenomena revealed in shadowing and their relationship to diffraction. The importance of these measurements for the under- standing of the perturbative and non-perturbative aspects of QCD thought to be responsible for nucleon structure is discussed, as is the significance of the measurements for future experimental programmes. Some modifications to both the H1 apparatus and the HERA accelerator are necessary to realise this programme; these are presented in the document. Mention is also made of questions that will remain unanswered following the completion of the above programme and the potential role of HERA and of H1 in investigating these questions is outlined.Physicists and Institutes interested in supporting this project are asked to inform Max Klein (klein@ifh.de) and Tim Greenshaw (green@hep.ph.liv.ac.uk) that they would like to have their names on the Letter of Intent by Wednesday 30th April 2003.
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- 2003
21. Measurement of the total photon-proton cross-section and its decomposition at 200-GeV center-of-mass energy
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Aid, S., Andreev, V., Barrelet, E., Felst, R., Feltesse, J., Ferencei, J., Ferrarotto, F., Flamm, K., Fleischer, M., Flieser, M., Flugge, G., Fomenko, A., Fominykh, B., Barschke, R., Forbush, M., Formanek, J., Foster, J. M., Franke, G., Fretwurst, E., Gabathuler, E., Gabathuler, K., Garvey, J., Gayler, Joerg, Gebauer, M., Bartel, W., Gellrich, A., Genzel, H., Gerhards, R., Glazov, A., Goerlach, U., Goerlich, L., Gogitidze, N., Goldberg, M., Goldner, D., Gonzalez-Pineiro, B., Barth, M., Gorelov, I., Gorichev, P., Grab, C., Grassler, H., Grassler, R., Greenshaw, T., Griffiths, R., Grindhammer, Guenter, Gruber, A., Gruber, C., Bassler, U., Haack, J., Haidt, D., Hajduk, L., Hamon, O., Hampel, M., Hapke, M., Haynes, W. J., Heinzelmann, G., Henderson, R. C. W., Henschel, H., Beck, H. P., Herynek, I., Hess, M. F., Hildesheim, W., Hill, P., Hiller, K. H., Hilton, C. D., Hladky, J., Hoeger, K. C., Hoppner, M., Horisberger, R., Behrend, H. J., Hudgson, V. L., Huet, P., Hutte, M., Hufnagel, H., Ibbotson, M., Itterbeck, H., Jabiol, M. A., Jacholkowska, A., Jacobsson, C., Jaffre, M., Belousov, A., Janoth, J., Jansen, T., Jonsson, L., Johnson, D. P., Johnson, L., Jung, H., Kalmus, P. I. P., Kant, D., Kaschowitz, R., Kasselmann, P., Berger, Christoph, Kathage, U., Katzy, J., Kaufmann, H. H., Ghazaryan, Samvel, Kenyon, I. R., Kermiche, S., Keuker, C., Kiesling, Christian M., Klein, M., Kleinwort, C., Bernardi, G., Knies, G., Ko, W., Kohler, T., Kohne, J., Kolanoski, H., Kole, F., Kolya, S. D., Korbel, V., Korn, M., Kostka, P., Andrieu, B., Bernet, R., Kotelnikov, S. K., Kramerkamper, T., Krasny, M. W., Krehbiel, H., Krucker, D., Kruger, U., Kruner-Marquis, U., Kuster, H., Kuhlen, M., Kurca, T., Bertrand-Coremans, G., Kurzhofer, J., Kuznik, B., Lacour, D., Laforge, B., Lamarche, F., Lander, R., Landon, M. P. J., Lange, W., Lanius, P., Laporte, J. F., Besancon, M., Lebedev, A., Lehner, F., Leverenz, C., Levonian, S., Ley, C., Lindstrom, G., Link, J., Linsel, F., Lipinski, J., List, B., Beyer, R., Lobo, G., Loch, P., Lohmander, H., Lomas, J., Lopez, G. C., Lyubimov, V., Luke, D., Magnussen, N., Malinovski, E., Mani, S., Biddulph, P., Maracek, R., Marage, P., Marks, J., Marshall, R., Martens, J., Martin, G., Martin, R., Martyn, H. U., Martyniak, J., Masson, S., Bispham, P., Mavroidis, T., Maxfield, S. J., McMahon, S. J., Mehta, A., Meier, K., Mercer, D., Merz, T., Meyer, A., Meyer, C. A., Meyer, H., Bizot, J. C., Meyer, J., Meyer, P. O., Migliori, A., Mikocki, S., Milstead, D., Moreau, F., Morris, J. V., Mroczko, E., Muller, G., Muller, K., Blobel, V., Murin, P., Nagovizin, V., Nahnhauer, R., Naroska, B., Naumann, T., Newman, Paul R., Newton, D., Neyret, D., Nguyen, H. K., Nicholls, T. C., Borras, K., Niebergall, F., Niebuhr, C., Niedzballa, C., Nisius, R., Nowak, G., Noyes, G. W., Nyberg-Werther, M., Oakden, M., Oberlack, H., Obrock, U., Botterweck, F., Olsson, J. E., Ozerov, D., Palmen, P., Panaro, E., Panitch, A., Pascaud, C., Patel, G. D., Pawletta, H., Peppel, E., Perez, E., Appuhn, R. D., Boudry, V., Phillips, J. P., Pichler, C., Pieuchot, A., Pitzl, D., Pope, G., Prell, Soeren A., Prosi, R., Rabbertz, K., Radel, G., Raupach, F., Bourov, S., Reimer, P., Reinshagen, S., Ribarics, P., Rick, H., Riech, V., Riedlberger, J., Riess, S., Rietz, M., Rizvi, E., Robertson, S. M., Braemer, A., Robmann, P., Roloff, H. E., Roosen, R., Rosenbauer, K., Rostovtsev, A., Rouse, F., Royon, C., Ruter, K., Rusakov, S., Rybicki, K., Brasse, F., Sahlmann, N., Sankey, D. P., Schacht, P., Schiek, S., Schlief, S., Schleper, P., von Schlippe, W., Schmidt, D., Schmidt, G., Schoning, A., Braunschweig, W., Schroder, V., Schuhmann, E., Schwab, B., Sciacca, G., Sefkow, F., Seidel, M., Sell, R., Semenov, A., Chekelian, V. I., Sheviakov, I., Brisson, V., Shtarkov, L. N., Siegmon, G., Siewert, U., Sirois, Y., Skillicorn, I. O., Smirnov, P., Smith, J. R., Solochenko, V., Solovev, Ya., Spiekermann, J., Bruncko, D., Spielman, S., Spitzer, H., Starosta, R., Steenbock, M., Steffen, P., Steinberg, R., Stella, B., Stephens, K., Stier, J., Stiewe, J., Brune, C., Stosslein, U., Stolze, K., Strachota, J., Straumann, U., Struczinski, W., Sutton, J. P., Tapprogge, S., Chernyshov, V., Theissen, J., Thiebaux, C., Buchholz, R., Thompson, Graham, Truoel, Peter, Turnau, J., Tutas, J., Ulkes, P., Usik, A., Valkar, S., Valkarova, A., Vallee, C., Vandenplas, D., Bungener, L., Van Esch, P., Van Mechelen, P., Vartapetian, A., Vazdik, Y., Verrecchia, P., Villet, G., Wacker, K., Wagener, A., Wagener, M., Walther, A., Arpagaus, M., Burger, J., Waugh, B., Weber, G., Weber, M., Wegener, D., Wegner, A., Wellisch, H. P., West, L. R., Willard, S., Winde, M., Winter, G. G., Busser, F. W., Wittek, C., Wright, A. E., Wunsch, E., Wulff, N., Yiou, T. P., Zacek, J., Zarbock, D., Zhang, Z., Zhokin, A., Zimmer, M., Bunyatyan, A., Zimmermann, W., Zomer, F., Zsembery, J., Zuber, K., zur Nedden, M., H1 Collaboration, Burke, Stephen, Burton, M., Buschhorn, G., Campbell, A. J., Carli, T., Charles, F., Charlet, M., Babaev, A., Clarke, D., Clegg, Arthur B., Clerbaux, B., Contreras, J. G., Cormack, C., Coughlan, J. A., Courau, A., Coutures, C., Cozzika, G., Criegee, L., Bahr, J., Cussans, D. G., Cvach, J., Dagoret, S., Dainton, J. B., Dau, W. D., Daum, K., David, M., Davis, C. L., Delcourt, B., Del Buono, L., Ban, J., de Roeck, A., De Wolf, E. A., Dixon, P., Di Nezza, P., Dollfus, C., Dowell, J. D., Dreis, H. B., Droutskoi, V., Duboc, J., Duellmann, Dirk, Ban, Y., Dunger, O., Duhm, H., Ebert, J., Ebert, T. R., Eckerlin, Guenter, Efremenko, V., Egli, S., Ehrlichmann, H., Eichenberger, S., Eichler, R., Baranov, P., Eisele, F., Eisenhandler, E., Ellison, R. J., Elsen, E., Erdmann, M., Erdmann, W., Evrard, E., Favart, L., Fedotov, A., Feeken, D., 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), 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, and 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)
- Subjects
interaction [photon p] ,photoproduction [vector meson] ,nondiffractive ,elastic scattering ,photoproduction [hadron] ,296 GeV-cms ,hadron [photoproduction] ,vector meson [photoproduction] ,colliding beams [positron p] ,DESY HERA Stor ,photon p [interaction] ,positron p [colliding beams] ,one-photon [exchange] ,H1 ,[PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex] ,ddc:530 ,energy dependence [cross section] ,dissociation [diffraction] ,exchange [one-photon] ,experimental results - Abstract
We present a new measurement of the total photoproduction cross section performed with the H1 detector at HERA. For an average centre of mass energy of 200GeV a value of $\sigma_{tot}~{\gamma{p}}= 165\pm2\pm11\mu$b has been obtained. A detailed analysis of the data in adequate kinematic regions enabled a decomposition of the total cross section in its elastic, single diffractive dissociation and remaining non-diffractive parts, based on safe assumptions on the double diffractive dissociation contribution.
- Published
- 1995
- Full Text
- View/download PDF
22. Transverse energy and forward jet production in the low x regime at HERA
- Author
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Aid, S., Andreev, V., Andrieu, B., Appuhn, R. D., Arpagaus, M., Babaev, A., Bahr, J., Ban, J., Ban, Y., Baranov, P., Barrelet, E., Barschke, R., Bartel, W., Barth, M., Bassler, U., Beck, H. P., Behrend, H. J., Belousov, A., Berger, Christoph, Bernardi, G., Bernet, R., Bertrand-Coremans, G., Besancon, M., Beyer, R., Biddulph, P., Bispham, P., Bizot, J. C., Blobel, V., Borras, K., Botterweck, F., Boudry, V., Braemer, A., Brasse, F., Braunschweig, W., Brisson, V., Bruncko, D., Brune, C., Buchholz, R., Bungener, L., Burger, J., Busser, F. W., Bunyatyan, A., Burke, Stephen, Burton, M., Buschhorn, G., Campbell, A. J., Carli, T., Charles, F., Charlet, M., Clarke, D., Clegg, Arthur B., Clerbaux, B., Colombo, M., Contreras, J. G., Cormack, C., Coughlan, J. A., Courau, A., Coutures, C., Cozzika, G., Criegee, L., Cussans, D. G., Cvach, J., Dagoret, S., Dainton, J. B., Dau, W. D., Daum, K., David, M., Delcourt, B., Del Buono, L., de Roeck, A., De Wolf, E. A., Di Nezza, P., Dollfus, C., Dowell, J. D., Dreis, H. B., Droutskoi, V., Duboc, J., Duellmann, Dirk, Dunger, O., Duhm, H., Ebert, J., Ebert, T. R., Eckerlin, Guenter, Efremenko, V., Egli, S., Ehrlichmann, H., Eichenberger, S., Eichler, R., Eisele, F., Eisenhandler, E., Ellison, R. J., Elsen, E., Erdmann, M., Erdmann, W., Evrard, E., Favart, L., Fedotov, A., Feeken, D., Felst, R., Feltesse, J., Ferencei, J., Ferrarotto, F., Flamm, K., Fleischer, M., Flieser, M., Flugge, G., Fomenko, A., Fominykh, B., Forbush, M., Formanek, J., Foster, J. M., Franke, G., Fretwurst, E., Gabathuler, E., Gabathuler, K., Garvey, J., Gayler, Joerg, Gebauer, M., Gellrich, A., Genzel, H., Gerhards, R., Glazov, A., Goerlach, U., Goerlich, L., Gogitidze, N., Goldberg, M., Goldner, D., Gonzalez-Pineiro, B., Gorelov, I., Gorichev, P., Grab, C., Grassler, H., Grassler, R., Greenshaw, T., Grindhammer, Guenter, Gruber, A., Gruber, C., Haack, J., Haidt, D., Hajduk, L., Hamon, O., Hampel, M., Hapke, M., Haynes, W. J., Heatherington, J., Heinzelmann, G., Henderson, R. C. W., Henschel, H., Herynek, I., Hess, M. F., Hildesheim, W., Hill, P., Hiller, K. H., Hilton, C. D., Hladky, J., Hoeger, K. C., Hoppner, M., Horisberger, R., Hudgson, V. L., Huet, P., Hutte, M., Hufnagel, H., Ibbotson, M., Itterbeck, H., Jabiol, M. A., Jacholkowska, A., Jacobsson, C., Jaffre, M., Janoth, J., Jansen, T., Jonsson, L., Johnson, D. P., Johnson, L., Jung, H., Kalmus, P. I. P., Kant, D., Kaschowitz, R., Kasselmann, P., Kathage, U., Katzy, J., Kaufmann, H. H., Ghazaryan, Samvel, Kenyon, I. R., Kermiche, S., Keuker, C., Kiesling, Christian M., Klein, M., Kleinwort, C., Knies, G., Ko, W., Kohler, T., Kohne, J., Kolanoski, H., Kole, F., Kolya, S. D., Korbel, V., Korn, M., Kostka, P., Kotelnikov, S. K., Kramerkamper, T., Krasny, M. W., Krehbiel, H., Krucker, D., Kruger, U., Kruner-Marquis, U., Kuster, H., Kuhlen, M., Kurca, T., Kurzhofer, J., Kuznik, B., Lacour, D., Lamarche, F., Lander, R., Landon, M. P. J., Lange, W., Lanius, P., Laporte, J. F., Lebedev, A., Lehner, F., Leverenz, C., Levonian, S., Ley, C., Lindner, A., Lindstrom, G., Link, J., Linsel, F., Lipinski, J., List, B., Lobo, G., Loch, P., Lohmander, H., Lomas, J., Lopez, G. C., Lyubimov, V., Luke, D., Magnussen, N., Malinovski, E., Mani, S., Maracek, R., Marage, P., Marks, J., Marshall, R., Martens, J., Martin, G., Martin, R., Martyn, H. U., Martyniak, J., Masson, S., Mavroidis, T., Maxfield, S. J., McMahon, S. J., Mehta, A., Meier, K., Mercer, D., Merz, T., Meyer, A., Meyer, C. A., Meyer, H., Meyer, J., Migliori, A., Mikocki, S., Milstead, D., Moreau, F., Morris, J. V., Mroczko, E., Muller, G., Muller, K., Murin, P., Nagovizin, V., Nahnhauer, R., Naroska, B., Naumann, T., Newman, Paul R., Newton, D., Neyret, D., Nguyen, H. K., Nicholls, T. C., Niebergall, F., Niebuhr, C., Niedzballa, C., Nisius, R., Nowak, G., Noyes, G. W., Nyberg-Werther, M., Oakden, M., Oberlack, H., Obrock, U., Olsson, J. E., Ozerov, D., Panaro, E., Panitch, A., Pascaud, C., Patel, G. D., Peppel, E., Perez, E., Phillips, J. P., Pichler, C., Pitzl, D., Pope, G., Prell, Soeren A., Prosi, R., Rabbertz, K., Radel, G., Raupach, F., Reimer, P., Reinshagen, S., Ribarics, P., Rick, H., Riech, V., Riedlberger, J., Riess, S., Rietz, M., Rizvi, E., Robertson, S. M., Robmann, P., Roloff, H. E., Roosen, R., Rosenbauer, K., Rostovtsev, A., Rouse, F., Royon, C., Ruter, K., Rusakov, S., Rybicki, K., Rylko, R., Sahlmann, N., Sankey, D. P., Schacht, P., Schiek, S., Schlief, S., Schleper, P., von Schlippe, W., Schmidt, D., Schmidt, G., Schoning, A., Schroder, V., Schuhmann, E., Schwab, B., Sciacca, G., Sefkow, F., Seidel, M., Sell, R., Semenov, A., Chekelian, V. I., Sheviakov, I., Shtarkov, L. N., Siegmon, G., Siewert, U., Sirois, Y., Skillicorn, I. O., Smirnov, P., Smith, J. R., Solochenko, V., Solovev, Ya., Spiekermann, J., Spielman, S., Spitzer, H., Starosta, R., Steenbock, M., Steffen, P., Steinberg, R., Stella, B., Stephens, K., Stier, J., Stiewe, J., Stosslein, U., Stolze, K., Strachota, J., Straumann, U., Struczinski, W., Sutton, J. P., Tapprogge, S., Taylor, Richard E., Chernyshov, V., Thiebaux, C., Thompson, Graham, Truoel, Peter, Turnau, J., Tutas, J., Ulkes, P., Usik, A., Valkar, S., Valkarova, A., Vallee, C., Vandenplas, D., Van Esch, P., Van Mechelen, P., Vartapetian, A., Vazdik, Y., Verrecchia, P., Villet, G., Wacker, K., Wagener, A., Wagener, M., Walther, A., Weber, G., Weber, M., Wegener, D., Wegner, A., Wellisch, H. P., West, L. R., Willard, S., Winde, M., Winter, G. G., Wittek, C., Wright, A. E., Wunsch, E., Wulff, N., Yiou, T. P., Zacek, J., Zarbock, D., Zhang, Z., Zhokin, A., Zimmer, M., Zimmermann, W., Zomer, F., Zuber, K., zur Nedden, M., and H1 Collaboration
- Subjects
electron p: deep inelastic scattering ,Lipatov equation ,small-angle: production ,296 GeV-cms ,rapidity dependence ,x-dependence ,electroproduction: jet ,DGLAP equation ,colliding beams: electron p ,jet: electroproduction ,DESY HERA Stor ,electron p: colliding beams ,deep inelastic scattering: electron p ,dependence: momentum transfer ,transverse energy: energy flow ,H1 ,production: small-angle ,experimental results - Abstract
The production of transverse energy in deep inelastic scattering is measured as a function of the kinematic variables x and Q 2 using the H1 detector at the ep collider HERA. The results are compared to the different predictions based upon two alternative QCD evolution equations, namely the Dokshitzer-Gribov-Lipatov-Altarelli-Parisi (DGLAP) and the Balitsky-Fadin-Kuraev-Lipatov (BFKL) equations. In a pseudorapidity interval which is central in the hadronic centre of mass system between the current and the proton remnant fragmentation region the produced transverse energy increases with decreasing x for constant Q 2 . Such a behaviour can be explained with a QCD calculation based upon the BFKL ansatz. The rate of forward jets, proposed as a signature for BFKL dynamics, has been measured.
- Published
- 1995
- Full Text
- View/download PDF
23. Leptoquarks and compositeness scales from a contact interaction analysis of deep inelastic $\mathrm{e^\pm p}$ scattering at HERA
- Author
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Aid, S., Andreev, V., Andrieu, B., Appuhn, R. D., Arpagaus, M., Babaev, A., Baehr, J., Ban, J., Ban, Y., Baranov, P., Barrelet, E., Barschke, R., Bartel, W., Barth, M., Bassler, U., Beck, H. P., Behrend, H. J., Belousov, A., Berger, Christoph, Bernardi, G., Bernet, R., Bertrand-Coremans, G., Besancon, M., Beyer, R., Biddulph, P., Bispham, P., Bizot, J. C., Blobel, V., Borras, K., Botterweck, F., Boudry, V., Braemer, A., Brasse, F., Braunschweig, W., Brisson, V., Bruncko, D., Brune, C., Buchholz, R., Bungener, L., Burger, J., Busser, F. W., Bunyatyan, A., Burke, Stephen, Burton, M., Buschhorn, G., Campbell, A. J., Carli, T., Charles, F., Charlet, M., Clarke, D., Clegg, Arthur B., Clerbaux, B., Contreras, J. G., Cormack, C., Coughlan, J. A., Courau, A., Coutures, C., Cozzika, G., Criegee, L., Cussans, D. G., Cvach, J., Dagoret, S., Dainton, J. B., Dau, W. D., Daum, K., David, M., Delcourt, B., Del Buono, L., de Roeck, A., De Wolf, E. A., Di Nezza, P., Dollfus, C., Dowell, J. D., Dreis, H. B., Droutskoi, V., Duboc, J., Duellmann, Dirk, Dunger, O., Duhm, H., Ebert, J., Ebert, T. R., Eckerlin, Guenter, Efremenko, V., Egli, S., Ehrlichmann, H., Eichenberger, S., Eichler, R., Eisele, F., Eisenhandler, E., Ellison, R. J., Elsen, E., Erdmann, M., Erdmann, W., Evrard, E., Favart, L., Fedotov, A., Feeken, D., Felst, R., Feltesse, J., Ferencei, J., Ferrarotto, F., Flamm, K., Fleischer, M., Flieser, M., Flugge, G., Fomenko, A., Fominykh, B., Forbush, M., Formanek, J., Foster, J. M., Franke, G., Fretwurst, E., Gabathuler, E., Gabathuler, K., Garvey, J., Gayler, Joerg, Gebauer, M., Gellrich, A., Genzel, H., Gerhards, R., Glazov, A., Goerlach, U., Goerlich, L., Gogitidze, N., Goldberg, M., Goldner, D., Gonzalez-Pineiro, B., Gorelov, I., Gorichev, P., Grab, C., Grassler, H., Grassler, R., Greenshaw, T., Grindhammer, Guenter, Gruber, A., Gruber, C., Haack, J., Haidt, D., Hajduk, L., Hamon, O., Hampel, M., Hapke, M., Haynes, W. J., Heatherington, J., Heinzelmann, G., Henderson, R. C. W., Henschel, H., Herynek, I., Hess, M. F., Hildesheim, W., Hill, P., Hiller, K. H., Hilton, C. D., Hladky, J., Hoeger, K. C., Hoppner, M., Horisberger, R., Hudgson, V. L., Huet, P., Hutte, M., Hufnagel, H., Ibbotson, M., Itterbeck, H., Jabiol, M. A., Jacholkowska, A., Jacobsson, C., Jaffre, M., Janoth, J., Jansen, T., Jonsson, L., Johnson, D. P., Johnson, L., Jung, H., Kalmus, P. I. P., Kant, D., Kaschowitz, R., Kasselmann, P., Kathage, U., Katzy, J., Kaufmann, H. H., Ghazaryan, Samvel, Kenyon, I. R., Kermiche, S., Keuker, C., Kiesling, Christian M., Klein, M., Kleinwort, C., Knies, G., Ko, W., Kohler, T., Kohne, J., Kolanoski, H., Kole, F., Kolya, S. D., Korbel, V., Korn, M., Kostka, P., Kotelnikov, S. K., Kramerkamper, T., Krasny, M. W., Krehbiel, H., Krucker, D., Kruger, U., Kruner-Marquis, U., Kuster, H., Kuhlen, M., Kurca, T., Kurzhofer, J., Kuznik, B., Lacour, D., Lamarche, F., Lander, R., Landon, M. P. J., Lange, W., Lanius, P., Laporte, J. F., Lebedev, A., Lehner, F., Leverenz, C., Levonian, S., Ley, C., Lindstrom, G., Link, J., Linsel, F., Lipinski, J., List, B., Lobo, G., Loch, P., Lohmander, H., Lomas, J., Lopez, G. C., Lyubimov, V., Luke, D., Magnussen, N., Malinovski, E., Mani, S., Maracek, R., Marage, P., Marks, J., Marshall, R., Martens, J., Martin, G., Martin, R., Martyn, H. U., Martyniak, J., Masson, S., Mavroidis, T., Maxfield, S. J., McMahon, S. J., Mehta, A., Meier, K., Mercer, D., Merz, T., Meyer, A., Meyer, C. A., Meyer, H., Meyer, J., Migliori, A., Mikocki, S., Milstead, D., Moreau, F., Morris, J. V., Mroczko, E., Muller, G., Muller, K., Murin, P., Nagovizin, V., Nahnhauer, R., Naroska, B., Naumann, T., Newman, Paul R., Newton, D., Neyret, D., Nguyen, H. K., Nicholls, T. C., Niebergall, F., Niebuhr, C., Niedzballa, C., Nisius, R., Nowak, G., Noyes, G. W., Nyberg-Werther, M., Oakden, M., Oberlack, H., Obrock, U., Olsson, J. E., Ozerov, D., Panaro, E., Panitch, A., Pascaud, C., Patel, G. D., Peppel, E., Perez, E., Phillips, J. P., Pichler, C., Pitzl, D., Pope, G., Prell, Soeren A., Prosi, R., Rabbertz, K., Radel, G., Raupach, F., Reimer, P., Reinshagen, S., Ribarics, P., Rick, H., Riech, V., Riedlberger, J., Riess, S., Rietz, M., Rizvi, E., Robertson, S. M., Robmann, P., Roloff, H. E., Roosen, R., Rosenbauer, K., Rostovtsev, A., Rouse, F., Royon, C., Ruter, K., Rusakov, S., Rybicki, K., Rylko, R., Sahlmann, N., Sanchez, E., Sankey, D. P., Schacht, P., Schiek, S., Schlief, S., Schleper, P., von Schlippe, W., Schmidt, D., Schmidt, G., Schoning, A., Schroder, V., Schuhmann, E., Schwab, B., Sciacca, G., Sefkow, F., Seidel, M., Sell, R., Semenov, A., Chekelian, V. I., Sheviakov, I., Shtarkov, L. N., Siegmon, G., Siewert, U., Sirois, Y., Skillicorn, I. O., Smirnov, P., Smith, J. R., Solochenko, V., Solovev, Ya., Spiekermann, J., Spielman, S., Spitzer, H., Starosta, R., Steenbock, M., Steffen, P., Steinberg, R., Stella, B., Stephens, K., Stier, J., Stiewe, J., Stosslein, U., Stolze, K., Strachota, J., Straumann, U., Struczinski, W., Sutton, J. P., Tapprogge, S., Chernyshov, V., Thiebaux, C., Thompson, Graham, Truoel, Peter, Turnau, J., Tutas, J., Ulkes, P., Usik, A., Valkar, S., Valkarova, A., Vallee, C., Vandenplas, D., Van Esch, P., Van Mechelen, P., Vartapetian, A., Vazdik, Y., Verrecchia, P., Villet, G., Wacker, K., Wagener, A., Wagener, M., Walther, A., Weber, G., Weber, M., Wegener, D., Wegner, A., Wellisch, H. P., West, L. R., Willard, S., Winde, M., Winter, G. G., Wittek, C., Wright, A. E., Wunsch, E., Wulff, N., Yiou, T. P., Zacek, J., Zarbock, D., Zhang, Z., Zhokin, A., Zimmer, M., Zimmermann, W., Zomer, F., Zuber, K., zur Nedden, M., and H1 Collaboration
- Subjects
electron p: deep inelastic scattering ,effective Lagrangian: chiral ,leptoquark: coupling ,electron p [deep inelastic scattering] ,approx. 300 GeV-cms ,positron p [deep inelastic scattering] ,model: composite ,coupling: leptoquark ,validity test [electroweak interaction] ,momentum transfer: differential cross section ,deep inelastic scattering: electron p ,differential cross section: momentum transfer ,positron p [colliding beams] ,hadron: multiple production ,validity test: electroweak interaction ,deep inelastic scattering: positron p ,ddc:530 ,deep inelastic scattering [positron p] ,momentum transfer [differential cross section] ,hadron [multiple production] ,electroweak interaction [validity test] ,colliding beams [electron p] ,multiple production [hadron] ,composite [model] ,form factor ,positron p: deep inelastic scattering ,DESY DESY HERA Stor Stor ,differential cross section [momentum transfer] ,electron p [colliding beams] ,positron p: colliding beams ,colliding beams [positron p] ,leptoquark [postulated particle] ,colliding beams: electron p ,electron p: colliding beams ,multiple production: hadron ,colliding beams: positron p ,postulated particle: leptoquark ,electroweak interaction: validity test ,deep inelastic scattering [electron p] ,H1 ,chiral [effective Lagrangian] ,leptoquark [coupling] ,coupling [leptoquark] ,experimental results - Abstract
15 pp. (1995)., A contact interaction analysis is presented to search for new phenomena beyond the Standard Model in deep inelastic e ± p → e ± hadrons scattering. The data are collected with the H1 detector at HERA and correspond to integrated luminosities of 0.909 pb −1 and 2.947 pb −1 for electron and positron beams, respectively. The differential cross sections dσ/d Q 2 are measured in the Q 2 range between 160 GeV 2 and 20 000 GeV 2 . The absence of any significant deviation from the Standard Model prediction is used to constrain the couplings and masses of new leptoquarks and to set limits on electron-quark compositeness scales and on the radius of light quarks.
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- 1995
24. Inclusive parton cross-sections in photoproduction and photon structure
- Author
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Ahmed, T., Aid, S., Baranov, P., Ferencei, J., Ferrarotto, F., Flamm, K., Fleischer, M., Flieser, M., Flugge, G., Fomenko, A., Fominykh, B., Forbush, M., Formanek, J., Barrelet, E., Foster, J. M., Franke, G., Fretwurst, E., Gabathuler, E., Gabathuler, K., Gamerdinger, K., Garvey, J., Gayler, Joerg, Gebauer, M., Gellrich, A., Bartel, W., Genzel, H., Gerhards, R., Goerlach, U., Goerlich, L., Gogitidze, N., Goldberg, M., Goldner, D., Gonzalez-Pineiro, B., Gorelov, I., Gorichev, P., Barth, M., Grab, C., Grassler, H., Grassler, R., Greenshaw, T., Grindhammer, Guenter, Gruber, A., Gruber, C., Haack, J., Haidt, D., Hajduk, L., Bassler, U., Hamon, O., Hampel, M., Hanlon, E. M., Hapke, M., Haynes, W. J., Heatherington, J., Heinzelmann, G., Henderson, R. C. W., Henschel, H., Herynek, I., Beck, H. P., Hess, M. F., Hildesheim, W., Hill, P., Hiller, K. H., Hilton, C. D., Hladky, J., Hoeger, K. C., Hoppner, M., Horisberger, R., Hudgson, V. L., Behrend, H. J., Huet, P., Hutte, M., Hufnagel, H., Ibbotson, M., Itterbeck, H., Jabiol, M. A., Jacholkowska, A., Jacobsson, C., Jaffre, M., Janoth, J., Belousov, A., Jansen, T., Jonsson, L., Johnson, D. P., Johnson, L., Jung, H., Kalmus, P. I. P., Kant, D., Kaschowitz, R., Kasselmann, P., Kathage, U., Berger, Christoph, Katzy, J., Kaufmann, H. H., Ghazaryan, Samvel, Kenyon, I. R., Kermiche, S., Keuker, C., Kiesling, Christian M., Klein, M., Kleinwort, C., Knies, G., Bernardi, G., Ko, W., Kohler, T., Kohne, J., Kolanoski, H., Kole, F., Kolya, S. D., Korbel, V., Korn, M., Kostka, P., Kotelnikov, S. K., Andreev, V., Bernet, R., Kramerkamper, T., Krasny, M. W., Krehbiel, H., Krucker, D., Kruger, U., Kruner-Marquis, U., Kubenka, J. P., Kuster, H., Kuhlen, M., Kurca, T., Bertrand-Coremans, G., Kurzhofer, J., Kuznik, B., Lacour, D., Lamarche, F., Lander, R., Landon, M. P. J., Lange, W., Lanius, P., Laporte, J. F., Lebedev, A., Besancon, M., Leverenz, C., Levonian, S., Ley, C., Lindner, A., Lindstrom, G., Link, J., Linsel, F., Lipinski, J., List, B., Lobo, G., Beyer, R., Loch, P., Lohmander, H., Lomas, J., Lopez, G. C., Lyubimov, V., Luke, D., Magnussen, N., Malinovski, E., Mani, S., Maracek, R., Biddulph, P., Marage, P., Marks, J., Marshall, R., Martens, J., Martin, R., Martyn, H. U., Martyniak, J., Masson, S., Mavroidis, T., Maxfield, S. J., Bispham, P., McMahon, S. J., Mehta, A., Meier, K., Mercer, D., Merz, T., Meyer, C. A., Meyer, H., Meyer, J., Migliori, A., Mikocki, S., Bizot, J. C., Milstead, D., Moreau, F., Morris, J. V., Mroczko, E., Muller, G., Muller, K., Murin, P., Nagovizin, V., Nahnhauer, R., Naroska, B., Blobel, V., Naumann, T., Newman, Paul R., Newton, D., Neyret, D., Nguyen, H. K., Nicholls, T. C., Niebergall, F., Niebuhr, C., Niedzballa, C., Nisius, R., Borras, K., Nowak, G., Noyes, G. W., Nyberg-Werther, M., Oakden, M., Oberlack, H., Obrock, U., Olsson, J. E., Ozerov, D., Panaro, E., Panitch, A., Botterweck, F., Pascaud, C., Patel, G. D., Peppel, E., Perez, E., Phillips, J. P., Pichler, C., Pieuchot, A., Pitzl, D., Pope, G., Prell, Soeren A., Andrieu, B., Boudry, V., Prosi, R., Rabbertz, K., Radel, G., Raupach, F., Reimer, P., Reinshagen, S., Ribarics, P., Rick, H., Riech, V., Riedlberger, J., Braemer, A., Riess, S., Rietz, M., Rizvi, E., Robertson, S. M., Robmann, P., Roloff, H. E., Roosen, R., Rosenbauer, K., Rostovtsev, A., Rouse, F., Brasse, F., Royon, C., Ruter, K., Rusakov, S., Rybicki, K., Rylko, R., Sahlmann, N., Salesch, S. G., Sanchez, E., Sankey, D. P., Schacht, P., Braunschweig, W., Schiek, S., Schleper, P., von Schlippe, W., Schmidt, C., Schmidt, D., Schmidt, G., Schoning, A., Schroder, V., Schuhmann, E., Schwab, B., Brisson, V., Schwind, A., Sefkow, F., Seidel, M., Sell, R., Semenov, A., Chekelian, V. I., Sheviakov, I., Shooshtari, H., Shtarkov, L. N., Siegmon, G., Bruncko, D., Siewert, U., Sirois, Y., Skillicorn, I. O., Smirnov, P., Smith, J. R., Solochenko, V., Solovev, Ya., Spiekermann, J., Spielman, S., Spitzer, H., Brune, C., Starosta, R., Steenbock, M., Steffen, P., Steinberg, R., Stella, B., Stephens, K., Stier, J., Stiewe, J., Stosslein, U., Stolze, K., Buchholz, R., Strachota, J., Straumann, U., Struczinski, W., Sutton, J. P., Tapprogge, S., Chernyshov, V., Thiebaux, C., Thompson, Graham, Truoel, Peter, Turnau, J., Bungener, L., Tutas, J., Ulkes, P., Usik, A., Valkar, S., Valkarova, A., Vallee, C., Van Esch, P., Van Mechelen, P., Vartapetian, A., Vazdik, Y., Burger, J., Verrecchia, P., Villet, G., Wacker, K., Wagener, A., Wagener, M., Walker, I. W., Walther, A., Weber, G., Weber, M., Wegener, D., Appuhn, R. D., Busser, F. W., Wegner, A., Wellisch, H. P., West, L. R., Willard, S., Winde, M., Winter, G. G., Wittek, C., Wright, A. E., Wunsch, E., Wulff, N., Bunyatyan, A., Yiou, T. P., Zacek, J., Zarbock, D., Zhang, Z., Zhokin, A., Zimmer, M., Zimmermann, W., Zomer, F., Zuber, K., H1 Collaboration, Burke, Stephen, Burton, M., Buschhorn, G., Campbell, A. J., Carli, T., Charles, F., Charlet, M., Clarke, D., Arpagaus, M., Clegg, Arthur B., Clerbaux, B., Colombo, M., Contreras, J. G., Cormack, C., Coughlan, J. A., Courau, A., Coutures, C., Cozzika, G., Criegee, L., Babaev, A., Cussans, D. G., Cvach, J., Dagoret, S., Dainton, J. B., Dau, W. D., Daum, K., David, M., Delcourt, B., Del Buono, L., de Roeck, A., Baehr, J., De Wolf, E. A., Di Nezza, P., Dollfus, C., Dowell, J. D., Dreis, H. B., Droutskoi, V., Duboc, J., Duellmann, Dirk, Dunger, O., Duhm, H., Ban, J., Ebert, J., Ebert, T. R., Eckerlin, Guenter, Efremenko, V., Egli, S., Ehrlichmann, H., Eichenberger, S., Eichler, R., Eisele, F., Eisenhandler, E., Ban, Y., Ellison, R. J., Elsen, E., Erdmann, M., Erdmann, W., Evrard, E., Favart, L., Fedotov, A., Feeken, D., Felst, R., and Feltesse, J.
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interaction [photon p] ,pair production [jet] ,transverse momentum [cross section] ,correlation: (jet parton) ,photoproduction [jet] ,296 GeV-cms ,energy flow [transverse energy] ,rapidity dependence ,photon p: interaction ,photon p [interaction] ,photoproduction: jet ,cross section: transverse momentum ,ddc:530 ,(jet parton) [correlation] ,photon: resolved ,exchange [one-photon] ,colliding beams [electron p] ,transverse momentum: parton ,interaction: photon p ,jet: photoproduction ,DESY DESY HERA Stor Stor ,pair production: jet ,bibliography ,resolved [photon] ,one-photon: exchange ,electron p [colliding beams] ,jet [pair production] ,jet [photoproduction] ,parton [momentum spectrum] ,angular dependence ,colliding beams: electron p ,momentum spectrum: parton ,electron p: colliding beams ,transverse energy: energy flow ,one-photon [exchange] ,jet: pair production ,H1 ,parton [transverse momentum] ,exchange: one-photon ,experimental results - Abstract
23 pp. (1995)., Photoproduction of 2-jet events is studied with the H1 detector at HERA. Parton cross sections are extracted from the data by an unfolding method using leading order parton-jet correlations of a QCD generator. The gluon distribution in the photon is derived in the fractional momentum range 0.04 ⩽ x γ ⩽ 1 at the average factorization scale 75 GeV 2 .
- Published
- 1995
- Full Text
- View/download PDF
25. Experimental study of hard photon radiation processes at HERA
- Author
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Ahmed, T., Aid, S., Andreev, V., Andrieu, B., Appuhn, R. D., Arpagaus, M., Babaev, A., Baehr, J., Ban, J., Baranov, P., Barrelet, E., Bartel, W., Barth, M., Bassler, U., Beck, H. P., Behrend, H. J., Belousov, A., Berger, Christoph, Bergstein, H., Bernardi, G., Bernet, R., Bertrand-Coremans, G., Besancon, M., Beyer, R., Biddulph, P., Bizot, J. C., Blobel, V., Borras, K., Botterweck, F., Boudry, V., Braemer, A., Brasse, F., Braunschweig, W., Brisson, V., Bruncko, D., Brune, C., Buchholz, R., Bungener, L., Burger, J., Busser, F. W., Bunyatyan, A., Burke, Stephen, Buschhorn, G., Campbell, A. J., Carli, T., Charles, F., Clarke, D., Clegg, Arthur B., Clerbaux, B., Colombo, M., Contreras, J. G., Cormack, C., Coughlan, J. A., Courau, A., Coutures, C., Cozzika, G., Criegee, L., Cussans, D. G., Cvach, J., Dagoret, S., Dainton, J. B., Danilov, M., Dau, W. D., Daum, K., David, M., Deffur, E., Delcourt, B., Del Buono, L., de Roeck, A., De Wolf, E. A., Di Nezza, P., Dollfus, C., Dowell, J. D., Dreis, H. B., Droutskoi, V., Duboc, J., Duellmann, Dirk, Dunger, O., Duhm, H., Ebert, J., Ebert, T. R., Eckerlin, Guenter, Efremenko, V., Egli, S., Ehrlichmann, H., Eichenberger, S., Eichler, R., Eisele, F., Eisenhandler, E., Ellison, R. J., Elsen, E., Erdmann, M., Erdmann, W., Evrard, E., Favart, L., Fedotov, A., Feeken, D., Felst, R., Feltesse, J., Ferencei, J., Ferrarotto, F., Flamm, K., Fleischer, M., Flieser, M., Flugge, G., Fomenko, A., Fominykh, B., Forbush, M., Formanek, J., Foster, J. M., Franke, G., Fretwurst, E., Gabathuler, E., Gabathuler, K., Gamerdinger, K., Garvey, J., Gayler, Joerg, Gebauer, M., Gellrich, A., Genzel, H., Gerhards, R., Goerlach, U., Goerlich, L., Gogitidze, N., Goldberg, M., Goldner, D., Gonzalez-Pineiro, B., Gorelov, I., Gorichev, P., Grab, C., Grassler, H., Grassler, R., Greenshaw, T., Grindhammer, Guenter, Gruber, A., Gruber, C., Haack, J., Haidt, D., Hajduk, L., Hamon, O., Hampel, M., Hanlon, E. M., Hapke, M., Haynes, W. J., Heatherington, J., Heinzelmann, G., Henderson, R. C. W., Henschel, H., Herma, R., Herynek, I., Hess, M. F., Hildesheim, W., Hill, P., Hiller, K. H., Hilton, C. D., Hladky, J., Hoeger, K. C., Hoppner, M., Horisberger, R., Hudgson, V. L., Huet, P., Hutte, M., Hufnagel, H., Ibbotson, M., Itterbeck, H., Jabiol, M. A., Jacholkowska, A., Jacobsson, C., Jaffre, M., Janoth, J., Jansen, T., Jonsson, L., Johannsen, K., Johnson, D. P., Johnson, L., Jung, H., Kalmus, P. I. P., Kant, D., Kaschowitz, R., Kasselmann, P., Kathage, U., Katzy, J., Kaufmann, H. H., Ghazaryan, Samvel, Kenyon, I. R., Kermiche, S., Keuker, C., Kiesling, Christian M., Klein, M., Kleinwort, C., Knies, G., Ko, W., Kohler, T., Kohne, J., Kolanoski, H., Kole, F., Kolya, S. D., Korbel, V., Korn, M., Kostka, P., Kotelnikov, S. K., Kramerkamper, T., Krasny, M. W., Krehbiel, H., Krucker, D., Kruger, U., Kruner-Marquis, U., Kubenka, J. P., Kuster, H., Kuhlen, M., Kurca, T., Kurzhofer, J., Kuznik, B., Lacour, D., Lamarche, F., Lander, R., Landon, M. P. J., Lange, W., Lanius, P., Laporte, J. F., Lebedev, A., Leverenz, C., Levonian, S., Ley, C., Lindner, A., Lindstrom, G., Linsel, F., Lipinski, J., List, B., Loch, P., Lohmander, H., Lopez, G. C., Lyubimov, V., Luke, D., Magnussen, N., Malinovski, E., Mani, S., Maracek, R., Marage, P., Marks, J., Marshall, R., Martens, J., Martin, R., Martyn, H. U., Martyniak, J., Masson, S., Mavroidis, T., Maxfield, S. J., McMahon, S. J., Mehta, A., Meier, K., Mercer, D., Merz, T., Meyer, C. A., Meyer, H., Meyer, J., Mikocki, S., Milstead, D., Moreau, F., Morris, J. V., Mroczko, E., Muller, G., Muller, K., Murin, P., Nagovizin, V., Nahnhauer, R., Naroska, B., Naumann, T., Newman, Paul R., Newton, D., Neyret, D., Nguyen, H. K., Nicholls, T. C., Niebergall, F., Niebuhr, C., Nisius, R., Nowak, G., Noyes, G. W., Nyberg-Werther, M., Oakden, M., Oberlack, H., Obrock, U., Olsson, J. E., Ozerov, D., Panaro, E., Panitch, A., Pascaud, C., Patel, G. D., Peppel, E., Perez, E., Phillips, J. P., Pichler, C., Pitzl, D., Pope, G., Prell, Soeren A., Prosi, R., Radel, G., Raupach, F., Reimer, P., Reinshagen, S., Ribarics, P., Rick, H., Riech, V., Riedlberger, J., Riess, S., Rietz, M., Rizvi, E., Robertson, S. M., Robmann, P., Roloff, H. E., Roosen, R., Rosenbauer, K., Rostovtsev, A., Rouse, F., Royon, C., Ruter, K., Rusakov, S., Rybicki, K., Rylko, R., Sahlmann, N., Sanchez, E., Sankey, D. P., Savitsky, M., Schacht, P., Schiek, S., Schleper, P., von Schlippe, W., Schmidt, C., Schmidt, D., Schmidt, G., Schoning, A., Schroder, V., Schuhmann, E., Schwab, B., Schwind, A., Seehausen, U., Sefkow, F., Seidel, M., Sell, R., Semenov, A., Chekelian, V. I., Sheviakov, I., Shooshtari, H., Shtarkov, L. N., Siegmon, G., Siewert, U., Sirois, Y., Skillicorn, I. O., Smirnov, P., Smith, J. R., Solochenko, V., Solovev, Ya., Spiekermann, J., Spitzer, H., Starosta, R., Steenbock, M., Steffen, P., Steinberg, R., Stella, B., Stephens, K., Stier, J., Stiewe, J., Stosslein, U., Stolze, K., Strachota, J., Straumann, U., Struczinski, W., Sutton, J. P., Tapprogge, S., Taylor, Richard E., Chernyshov, V., Thiebaux, C., Thompson, Graham, Truoel, Peter, Turnau, J., Tutas, J., Ulkes, P., Usik, A., Valkar, S., Valkarova, A., Vallee, C., Van Esch, P., Van Mechelen, P., Vartapetian, A., Vazdik, Y., Vecko, M., Verrecchia, P., Villet, G., Wacker, K., Wagener, A., Wagener, M., Walker, I. W., Walther, A., Weber, G., Weber, M., Wegener, D., Wegner, A., Wellisch, H. P., West, L. R., Willard, S., Winde, M., Winter, G. G., Wright, A. E., Wunsch, E., Wulff, N., Yiou, T. P., Zacek, J., Zarbock, D., Zhang, Z., Zhokin, A., Zimmer, M., Zimmermann, W., Zomer, F., Zuber, K., and H1 Collaboration
- Subjects
photon [electroproduction] ,+p+electron+photon%22">electron p --> p electron photon ,electron p: inclusive reaction ,296 GeV-cms ,bremsstrahlung ,+electron+photon+anything%22">electron p --> electron photon anything ,momentum transfer: differential cross section ,differential cross section: momentum transfer ,deep inelastic scattering ,radiative correction ,electron p: exclusive reaction ,ddc:530 ,momentum transfer [differential cross section] ,energy: correlation ,colliding beams [electron p] ,(electron): energy spectrum ,DESY DESY HERA Stor Stor ,electroproduction: photon ,energy spectrum: (electron) ,differential cross section [momentum transfer] ,electron p [colliding beams] ,photon: electroproduction ,luminosity: measurement ,exclusive reaction [electron p] ,colliding beams: electron p ,correlation [energy] ,electron p: colliding beams ,measurement [luminosity] ,energy spectrum [(electron)] ,(electron) [energy spectrum] ,H1 ,electroproduction [photon] ,inclusive reaction [electron p] ,Compton scattering ,experimental results - Abstract
16 pp. (1995)., We present an experimental study of theep→eγ+p andep→eγ+X processes using data recorded by the H1 detector in 1993 at the electron-proton collider HERA. These processes are employed to measure the luminosity with an accuracy of 4.5 %. A subsample of theep→eγ+X events in which the hard photon is detected at angles θγ′ ≤ 0.45 mrad with respect to the incident electron direction is used to verify experimentally the size of radiative corrections to theep→eX inclusive cross section and to investigate the structure of the proton in theQ2 domain down to 2 GeV2, lower than previously attained at HERA.
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- 1995
26. The Gluon density of the proton at low x from a QCD analysis of $\mathrm{F_2}$
- Author
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Aid, S., Andreev, V., Andrieu, B., Appuhn, R. D., Arpagaus, M., Babaev, A., Bahr, J., Ban, J., Ban, Y., Baranov, P., Barrelet, E., Barschke, R., Bartel, W., Barth, M., Bassler, U., Beck, H. P., Behrend, H. J., Belousov, A., Berger, Christoph, Bernardi, G., Bernet, R., Bertrand-Coremans, G., Besancon, M., Beyer, R., Biddulph, P., Bispham, P., Bizot, J. C., Blobel, V., Borras, K., Botterweck, F., Boudry, V., Braemer, A., Brasse, F., Braunschweig, W., Brisson, V., Bruncko, D., Brune, C., Buchholz, R., Bungener, L., Burger, J., Busser, F. W., Bunyatyan, A., Burke, Stephen, Burton, M., Buschhorn, G., Campbell, A. J., Carli, T., Charles, F., Charlet, M., Clarke, D., Clegg, Arthur B., Clerbaux, B., Colombo, M., Contreras, J. G., Cormack, C., Coughlan, J. A., Courau, A., Coutures, C., Cozzika, G., Criegee, L., Cussans, D. G., Cvach, J., Dagoret, S., Dainton, J. B., Dau, W. D., Daum, K., David, M., Delcourt, B., Del Buono, L., de Roeck, A., De Wolf, E. A., Di Nezza, P., Dollfus, C., Dowell, J. D., Dreis, H. B., Droutskoi, V., Duboc, J., Duellmann, Dirk, Dunger, O., Duhm, H., Ebert, J., Ebert, T. R., Eckerlin, Guenter, Efremenko, V., Egli, S., Ehrlichmann, H., Eichenberger, S., Eichler, R., Eisele, F., Eisenhandler, E., Ellison, R. J., Elsen, E., Erdmann, M., Erdmann, W., Evrard, E., Favart, L., Fedotov, A., Feeken, D., Felst, R., Feltesse, J., Ferencei, J., Ferrarotto, F., Flamm, K., Fleischer, M., Flieser, M., Flugge, G., Fomenko, A., Fominykh, B., Forbush, M., Formanek, J., Foster, J. M., Franke, G., Fretwurst, E., Gabathuler, E., Gabathuler, K., Gamerdinger, K., Garvey, J., Gayler, Joerg, Gebauer, M., Gellrich, A., Genzel, H., Gerhards, R., Goerlach, U., Goerlich, L., Gogitidze, N., Goldberg, M., Goldner, D., Gonzalez-Pineiro, B., Gorelov, I., Gorichev, P., Grab, C., Grassler, H., Grassler, R., Greenshaw, T., Grindhammer, Guenter, Gruber, A., Gruber, C., Haack, J., Haidt, D., Hajduk, L., Hamon, O., Hampel, M., Hanlon, E. M., Hapke, M., Haynes, W. J., Heatherington, J., Heinzelmann, G., Henderson, R. C. W., Henschel, H., Herynek, I., Hess, M. F., Hildesheim, W., Hill, P., Hiller, K. H., Hilton, C. D., Hladky, J., Hoeger, K. C., Hoppner, M., Horisberger, R., Hudgson, V. L., Huet, P., Hutte, M., Hufnagel, H., Ibbotson, M., Itterbeck, H., Jabiol, M. A., Jacholkowska, A., Jacobsson, C., Jaffre, M., Janoth, J., Jansen, T., Jonsson, L., Johnson, D. P., Johnson, L., Jung, H., Kalmus, P. I. P., Kant, D., Kaschowitz, R., Kasselmann, P., Kathage, U., Katzy, J., Kaufmann, H. H., Ghazaryan, Samvel, Kenyon, I. R., Kermiche, S., Keuker, C., Kiesling, Christian M., Klein, M., Kleinwort, C., Knies, G., Ko, W., Kohler, T., Kohne, J., Kolanoski, H., Kole, F., Kolya, S. D., Korbel, V., Korn, M., Kostka, P., Kotelnikov, S. K., Kramerkamper, T., Krasny, M. W., Krehbiel, H., Krucker, D., Kruger, U., Kruner-Marquis, U., Kubenka, J. P., Kuster, H., Kuhlen, M., Kurca, T., Kurzhofer, J., Kuznik, B., Lacour, D., Lamarche, F., Lander, R., Landon, M. P. J., Lange, W., Lanius, P., Laporte, J. F., Lebedev, A., Leverenz, C., Levonian, S., Ley, C., Lindner, A., Lindstrom, G., Link, J., Linsel, F., Lipinski, J., List, B., Lobo, G., Loch, P., Lohmander, H., Lomas, J., Lopez, G. C., Lyubimov, V., Luke, D., Magnussen, N., Malinovski, E., Mani, S., Maracek, R., Marage, P., Marks, J., Marshall, R., Martens, J., Martin, R., Martyn, H. U., Martyniak, J., Masson, S., Mavroidis, T., Maxfield, S. J., McMahon, S. J., Mehta, A., Meier, K., Mercer, D., Merz, T., Meyer, C. A., Meyer, H., Meyer, J., Migliori, A., Mikocki, S., Milstead, D., Moreau, F., Morris, J. V., Mroczko, E., Muller, G., Muller, K., Murin, P., Nagovizin, V., Nahnhauer, R., Naroska, B., Naumann, T., Newman, Paul R., Newton, D., Neyret, D., Nguyen, H. K., Nicholls, T. C., Niebergall, F., Niebuhr, C., Niedzballa, C., Nisius, R., Nowak, G., Noyes, G. W., Nyberg-Werther, M., Oakden, M., Oberlack, H., Obrock, U., Olsson, J. E., Ozerov, D., Panaro, E., Panitch, A., Pascaud, C., Patel, G. D., Peppel, E., Perez, E., Phillips, J. P., Pichler, C., Pieuchot, A., Pitzl, D., Pope, G., Prell, Soeren A., Prosi, R., Rabbertz, K., Radel, G., Raupach, F., Reimer, P., Reinshagen, S., Ribarics, P., Rick, H., Riech, V., Riedlberger, J., Riess, S., Rietz, M., Rizvi, E., Robertson, S. M., Robmann, P., Roloff, H. E., Roosen, R., Rosenbauer, K., Rostovtsev, A., Rouse, F., Royon, C., Ruter, K., Rusakov, S., Rybicki, K., Rylko, R., Sahlmann, N., Sanchez, E., Sankey, D. P., Schacht, P., Schiek, S., Schleper, P., von Schlippe, W., Schmidt, C., Schmidt, D., Schmidt, G., Schoning, A., Schroder, V., Schuhmann, E., Schwab, B., Schwind, A., Sefkow, F., Seidel, M., Sell, R., Semenov, A., Chekelian, V. I., Sheviakov, I., Shooshtari, H., Shtarkov, L. N., Siegmon, G., Siewert, U., Sirois, Y., Skillicorn, I. O., Smirnov, P., Smith, J. R., Solochenko, V., Solovev, Ya., Spiekermann, J., Spielman, S., Spitzer, H., Starosta, R., Steenbock, M., Steffen, P., Steinberg, R., Stella, B., Stephens, K., Stier, J., Stiewe, J., Stosslein, U., Stolze, K., Strachota, J., Straumann, U., Struczinski, W., Sutton, J. P., Tapprogge, S., Chernyshov, V., Thiebaux, C., Thompson, Graham, Truoel, Peter, Turnau, J., Tutas, J., Ulkes, P., Usik, A., Valkar, S., Valkarova, A., Vallee, C., Van Esch, P., Van Mechelen, P., Vartapetian, A., Vazdik, Y., Verrecchia, P., Villet, G., Wacker, K., Wagener, A., Wagener, M., Walker, I. W., Walther, A., Weber, G., Weber, M., Wegener, D., Wegner, A., Wellisch, H. P., West, L. R., Willard, S., Winde, M., Winter, G. G., Wittek, C., Wright, A. E., Wunsch, E., Wulff, N., Yiou, T. P., Zacek, J., Zarbock, D., Zhang, Z., Zhokin, A., Zimmer, M., Zimmermann, W., Zomer, F., Zuber, K., and H1 Collaboration
- Subjects
electron p: deep inelastic scattering ,perturbation theory [quantum chromodynamics] ,Lipatov equation ,electron p [deep inelastic scattering] ,differential equations: solution ,structure function [p] ,296 GeV-cms ,small-x [structure function] ,DGLAP equation ,deep inelastic scattering: electron p ,momentum spectrum [gluon] ,ddc:530 ,p: structure function ,quantum chromodynamics: perturbation theory ,violation [scaling] ,colliding beams [electron p] ,gluon: momentum spectrum ,electron p [colliding beams] ,colliding beams: electron p ,DESY HERA Stor ,electron p: colliding beams ,solution [differential equations] ,structure function: small-x ,deep inelastic scattering [electron p] ,H1 ,scaling: violation ,experimental results - Abstract
16 pp. (1995)., We present a QCD analysis of the proton structure function F 2 measured by the H1 experiment at HERA, combined with data from previous fixed target experiments. The gluon density is extracted from the scaling violations of F 2 in the range 2 · 10 −4 < x < 3 · 10 −2 and compared with an approximate solution of the QCD evolution equations. The gluon density is found to rise steeply with decreasing x .
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- 1995
27. First measurement of the deep inelastic structure of proton diffraction
- Author
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Ahmed, T., Aid, S., Baranov, P., Ferencei, J., Ferrarotto, F., Flamm, K., Fleischer, M., Flieser, M., Flugge, G., Fomenko, A., Forbush, M., Formanek, J., Foster, J. M., Barrelet, E., Franke, G., Fretwurst, E., Gabathuler, E., Gabathuler, K., Gamerdinger, K., Garvey, J., Gayler, Joerg, Gebauer, M., Gellrich, A., Genzel, H., Bartel, W., Gerhards, R., Goerlach, U., Goerlich, L., Gogitidze, N., Goldberg, M., Goldner, D., Gonzalez-Pineiro, B., Gorelov, I., Gorichev, P., Grab, C., Barth, M., Grassler, H., Grassler, R., Greenshaw, T., Grindhammer, Guenter, Gruber, A., Gruber, C., Haack, J., Haidt, D., Hajduk, L., Hamon, O., Bassler, U., Hampel, M., Hanlon, E. M., Hapke, M., Haynes, W. J., Heatherington, J., Heinzelmann, G., Henderson, R. C. W., Henschel, H., Herynek, I., Hess, M. F., Beck, H. P., Hildesheim, W., Hill, P., Hiller, K. H., Hilton, C. D., Hladky, J., Hoeger, K. C., Hoppner, M., Horisberger, R., Hudgson, V. L., Huet, P., Behrend, H. J., Hutte, M., Hufnagel, H., Ibbotson, M., Itterbeck, H., Jabiol, M. A., Jacholkowska, A., Jacobsson, C., Jaffre, M., Janoth, J., Jansen, T., Belousov, A., Jonsson, L., Johnson, D. P., Johnson, L., Jung, H., Kalmus, P. I. P., Kant, D., Kaschowitz, R., Kasselmann, P., Kathage, U., Katzy, J., Berger, Christoph, Kaufmann, H. H., Ghazaryan, Samvel, Kenyon, I. R., Kermiche, S., Keuker, C., Kiesling, Christian M., Klein, M., Kleinwort, C., Knies, G., Ko, W., Bernardi, G., Kohler, T., Kohne, J., Kolanoski, H., Kole, F., Kolya, S. D., Korbel, V., Korn, M., Kostka, P., Kotelnikov, S. K., Kramerkamper, T., Andreev, V., Bernet, R., Krasny, M. W., Krehbiel, H., Krucker, D., Kruger, U., Kruner-Marquis, U., Kubenka, J. P., Kuster, H., Kuhlen, M., Kurca, T., Kurzhofer, J., Bertrand-Coremans, G., Kuznik, B., Lacour, D., Lamarche, F., Lander, R., Landon, M. P. J., Lange, W., Lanius, P., Laporte, J. F., Lebedev, A., Leverenz, C., Besancon, M., Levonian, S., Ley, C., Lindner, A., Lindstrom, G., Link, J., Linsel, F., Lipinski, J., List, B., Lobo, G., Loch, P., Beyer, R., Lohmander, H., Lomas, J., Lopez, G. C., Lyubimov, V., Luke, D., Magnussen, N., Malinovski, E., Mani, S., Maracek, R., Marage, P., Biddulph, P., Marks, J., Marshall, R., Martens, J., Martin, R., Martyn, H. U., Martyniak, J., Masson, S., Mavroidis, T., Maxfield, S. J., McMahon, S. J., Bispham, P., Mehta, A., Meier, K., Mercer, D., Merz, T., Meyer, C. A., Meyer, H., Meyer, J., Mikocki, S., Milstead, D., Moreau, F., Bizot, J. C., Morris, J. V., Mroczko, E., Muller, G., Muller, K., Murin, P., Nagovizin, V., Nahnhauer, R., Naroska, B., Naumann, T., Newman, Paul R., Blobel, V., Newton, D., Neyret, D., Nguyen, H. K., Nicholls, T. C., Niebergall, F., Niebuhr, C., Niedzballa, C., Nisius, R., Nowak, G., Noyes, G. W., Borras, K., Nyberg-Werther, M., Oakden, M., Oberlack, H., Obrock, U., Olsson, J. E., Ozerov, D., Panaro, E., Panitch, A., Pascaud, C., Patel, G. D., Botterweck, F., Peppel, E., Perez, E., Phillips, J. P., Pichler, C., Pitzl, D., Pope, G., Prell, Soeren A., Prosi, R., Rabbertz, K., Radel, G., Andrieu, B., Boudry, V., Raupach, F., Reimer, P., Reinshagen, S., Ribarics, P., Rick, H., Riech, V., Riedlberger, J., Riess, S., Rietz, M., Rizvi, E., Braemer, A., Robertson, S. M., Robmann, P., Roloff, H. E., Roosen, R., Rosenbauer, K., Rostovtsev, A., Rouse, F., Royon, C., Ruter, K., Rusakov, S., Brasse, F., Rybicki, K., Rylko, R., Sahlmann, N., Sanchez, E., Sankey, D. P., Schacht, P., Schiek, S., Schleper, P., von Schlippe, W., Schmidt, C., Braunschweig, W., Schmidt, D., Schmidt, G., Schoning, A., Schroder, V., Schuhmann, E., Schwab, B., Schwind, A., Sefkow, F., Seidel, M., Sell, R., Brisson, V., Semenov, A., Chekelian, V. I., Sheviakov, I., Shooshtari, H., Shtarkov, L. N., Siegmon, G., Siewert, U., Sirois, Y., Skillicorn, I. O., Smirnov, P., Bruncko, D., Smith, J. R., Solochenko, V., Solovev, Ya., Spiekermann, J., Spitzer, H., Starosta, R., Steenbock, M., Steffen, P., Steinberg, R., Stella, B., Brune, C., Stephens, K., Stier, J., Stiewe, J., Stosslein, U., Stolze, K., Strachota, J., Straumann, U., Struczinski, W., Sutton, J. P., Tapprogge, S., Buchholz, R., Taylor, Richard E., Chernyshov, V., Thiebaux, C., Thompson, Graham, Truoel, Peter, Turnau, J., Tutas, J., Ulkes, P., Usik, A., Valkar, S., Bungener, L., Valkarova, A., Vallee, C., Van Esch, P., Van Mechelen, P., Vartapetian, A., Vazdik, Y., Verrecchia, P., Villet, G., Wacker, K., Wagener, A., Burger, J., Wagener, M., Walker, I. W., Walther, A., Weber, G., Weber, M., Wegener, D., Wegner, A., Wellisch, H. P., West, L. R., Willard, S., Appuhn, R. D., Busser, F. W., Winde, M., Winter, G. G., Wittek, C., Wright, A. E., Wunsch, E., Wulff, N., Yiou, T. P., Zacek, J., Zarbock, D., Zhang, Z., Bunyatyan, A., Zhokin, A., Zimmer, M., Zimmermann, W., Zomer, F., Zuber, K., H1 Collaboration, Burke, Stephen, Burton, M., Buschhorn, G., Campbell, A. J., Carli, T., Charles, F., Clarke, D., Clegg, Arthur B., Arpagaus, M., Clerbaux, B., Colombo, M., Contreras, J. G., Cormack, C., Coughlan, J. A., Courau, A., Coutures, C., Cozzika, G., Criegee, L., Cussans, D. G., Babaev, A., Cvach, J., Dagoret, S., Dainton, J. B., Dau, W. D., Daum, K., David, M., Deffur, E., Delcourt, B., Del Buono, L., de Roeck, A., Baehr, J., De Wolf, E. A., Di Nezza, P., Dollfus, C., Dowell, J. D., Dreis, H. B., Droutskoi, V., Duboc, J., Duellmann, Dirk, Dunger, O., Duhm, H., Ban, J., Ebert, J., Ebert, T. R., Eckerlin, Guenter, Efremenko, V., Egli, S., Ehrlichmann, H., Eichenberger, S., Eichler, R., Eisele, F., Eisenhandler, E., Ban, Y., Ellison, R. J., Elsen, E., Erdmann, M., Erdmann, W., Evrard, E., Favart, L., Fedotov, A., Feeken, D., Felst, R., and Feltesse, J.
- Subjects
electron p: deep inelastic scattering ,structure function: pomeron ,gap [rapidity] ,electron p [deep inelastic scattering] ,diffraction ,structure function [p] ,momentum transfer [dependence] ,factorization [structure function] ,x-dependence ,deep inelastic scattering: electron p ,ddc:530 ,p: structure function ,colliding beams [electron p] ,pomeron: exchange ,DESY DESY HERA Stor Stor ,scaling ,296 GeV-cms: 8.5 < Q**2 < 50 GeV**2 ,electron p [colliding beams] ,8.5 < Q**2 < 50 GeV**2 [296 GeV-cms] ,pomeron [structure function] ,structure function: factorization ,rapidity: gap ,colliding beams: electron p ,electron p: colliding beams ,exchange: pomeron ,dependence: momentum transfer ,deep inelastic scattering [electron p] ,exchange [pomeron] ,H1 ,pomeron [exchange] ,experimental results - Abstract
16 pp. (1995)., A measurement is presented, using data taken with the H1 detector at HERA, of the contribution of diffractive interactions to deep-inelastic electron-proton ( ep ) scattering in the kinematic range 8.5 < Q 2 < 50GeV 2 , 2.4 × 10 −4 < Bjorken- x < 0.0133, and 3.7 × 10 −4 < χ p < 0.043. The diffractive contribution to the proton structure function F 2 ( x , Q 2 ) is evaluated as a function of the appropriate deep-inelastic scattering variables χ p , Q 2 , β (= χ χ p ) using a class of deep-inelastic ep scattering events with no hadronic energy flow in an interval of pseudo-rapidity adjacent to the proton beam direction. the dependence of this contribution on χ p is measured to be χ p − n with n = 1.19 ± 0.06 (stat.) ± 0.07 (syst.) independent of β and Q 2 , which is consistent with both a diffractive interpretation and a factorisable ep diffractive cross section. A first measurement of the deep-inelastic structure of the pomeron in the form of the Q 2 and β dependences of a factorised structure function is presented. For all measured β, this structure function is observed to be consistent with scale invariance.
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- 1995
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28. A Measurement of the proton structure function $\mathrm{F_2 (x, Q^2)}$
- Author
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Ahmed, T., Aid, S., Baranov, P., Ferencei, J., Ferrarotto, F., Flamm, K., Fleischer, M., Flieser, M., Flugge, G., Fomenko, A., Fominykh, B., Forbush, M., Formanek, J., Barrelet, E., Foster, J. M., Franke, G., Fretwurst, E., Gabathuler, E., Gabathuler, K., Gamerdinger, K., Garvey, J., Gayler, Joerg, Gebauer, M., Gellrich, A., Bartel, W., Genzel, H., Gerhards, R., Goerlach, U., Goerlich, L., Gogitidze, N., Goldberg, M., Goldner, D., Gonzalez-Pineiro, B., Gorelov, I., Gorichev, P., Barth, M., Grab, C., Grassler, H., Grassler, R., Greenshaw, T., Grindhammer, Guenter, Gruber, A., Gruber, C., Haack, J., Haidt, D., Hajduk, L., Bassler, U., Hamon, O., Hampel, M., Hanlon, E. M., Hapke, M., Haynes, W. J., Heatherington, J., Heinzelmann, G., Henderson, R. C. W., Henschel, H., Herma, R., Beck, H. P., Herynek, I., Hess, M. F., Hildesheim, W., Hill, P., Hiller, K. H., Hilton, C. D., Hladky, J., Hoeger, K. C., Hoppner, M., Horisberger, R., Behrend, H. J., Hudgson, V. L., Huet, P., Hutte, M., Hufnagel, H., Ibbotson, M., Itterbeck, H., Jabiol, M. A., Jacholkowska, A., Jacobsson, C., Jaffre, M., Belousov, A., Janoth, J., Jansen, T., Jonsson, L., Johannsen, K., Johnson, D. P., Johnson, L., Jung, H., Kalmus, P. I. P., Kant, D., Kaschowitz, R., Berger, Christoph, Kasselmann, P., Kathage, U., Katzy, J., Kaufmann, H. H., Ghazaryan, Samvel, Kenyon, I. R., Kermiche, S., Keuker, C., Kiesling, Christian M., Klein, M., Bergstein, H., Kleinwort, C., Knies, G., Ko, W., Kohler, T., Kohne, J., Kolanoski, H., Kole, F., Kolya, S. D., Korbel, V., Korn, M., Akhundov, Arif A., Bernardi, G., Kostka, P., Kotelnikov, S. K., Kramerkamper, T., Krasny, M. W., Krehbiel, H., Krucker, D., Kruger, U., Kruner-Marquis, U., Kubenka, J. P., Kuster, H., Bernet, R., Kuhlen, M., Kurca, T., Kurzhofer, J., Kuznik, B., Lacour, D., Lamarche, F., Lander, R., Landon, M. P. J., Lange, W., Lanius, P., Bertrand-Coremans, G., Laporte, J. F., Lebedev, A., Leverenz, C., Levonian, S., Ley, C., Lindner, A., Lindstrom, G., Linsel, F., Lipinski, J., List, B., Besancon, M., Loch, P., Lohmander, H., Lopez, G. C., Lyubimov, V., Luke, D., Magnussen, N., Malinovski, E., Mani, S., Maracek, R., Marage, P., Beyer, R., Marks, J., Marshall, R., Martens, J., Martin, R., Martyn, H. U., Martyniak, J., Masson, S., Mavroidis, T., Maxfield, S. J., McMahon, S. J., Biddulph, P., Mehta, A., Meier, K., Mercer, D., Merz, T., Meyer, C. A., Meyer, H., Meyer, J., Mikocki, S., Milstead, D., Moreau, F., Bizot, J. C., Morris, J. V., Mroczko, E., Muller, G., Muller, K., Murin, P., Nagovizin, V., Nahnhauer, R., Naroska, B., Naumann, T., Newman, Paul R., Blobel, V., Newton, D., Neyret, D., Nguyen, H. K., Nicholls, T. C., Niebergall, F., Niebuhr, C., Nisius, R., Nowak, G., Noyes, G. W., Nyberg-Werther, M., Borras, K., Oakden, M., Oberlack, H., Obrock, U., Olsson, J. E., Panaro, E., Panitch, A., Pascaud, C., Patel, G. D., Peppel, E., Perez, E., Botterweck, F., Phillips, J. P., Pichler, C., Pitzl, D., Pope, G., Prell, Soeren A., Prosi, R., Radel, G., Raupach, F., Reimer, P., Reinshagen, S., Andreev, V., Boudry, V., Ribarics, P., Rick, H., Riech, V., Riedlberger, J., Riess, S., Rietz, M., Rizvi, E., Robertson, S. M., Robmann, P., Roloff, H. E., Braemer, A., Roosen, R., Rosenbauer, K., Rostovtsev, A., Rouse, F., Royon, C., Ruter, K., Rusakov, S., Rybicki, K., Rylko, R., Sahlmann, N., Brasse, F., Sanchez, E., Sankey, D. P., Savitsky, M., Schacht, P., Schiek, S., Schleper, P., von Schlippe, W., Schmidt, C., Schmidt, D., Schmidt, G., Braunschweig, W., Schoning, A., Schroder, V., Schuhmann, E., Schwab, B., Schwind, A., Seehausen, U., Sefkow, F., Seidel, M., Sell, R., Semenov, A., Brisson, V., Chekelian, V. I., Sheviakov, I., Shooshtari, H., Shtarkov, L. N., Siegmon, G., Siewert, U., Sirois, Y., Skillicorn, I. O., Smirnov, P., Smith, J. R., Bruncko, D., Solovev, Ya., Spiekermann, J., Spitzer, H., Starosta, R., Steenbock, M., Steffen, P., Steinberg, R., Stella, B., Stephens, K., Stier, J., Brune, C., Stiewe, J., Stosslein, U., Strachota, J., Straumann, U., Struczinski, W., Sutton, J. P., Tapprogge, S., Taylor, Richard E., Chernyshov, V., Thiebaux, C., Buchholz, R., Thompson, Graham, Truoel, Peter, Turnau, J., Tutas, J., Ulkes, P., Usik, A., Valkar, S., Valkarova, A., Vallee, C., Van Esch, P., Bungener, L., Van Mechelen, P., Vartapetian, A., Vazdik, Y., Vecko, M., Verrecchia, P., Villet, G., Wacker, K., Wagener, A., Wagener, M., Walker, I. W., Burger, J., Walther, A., Weber, G., Weber, M., Wegener, D., Wegner, A., Wellisch, H. P., West, L. R., Willard, S., Winde, M., Winter, G. G., Andrieu, B., Busser, F. W., Wright, A. E., Wunsch, E., Wulff, N., Yiou, T. P., Zacek, J., Zarbock, D., Zhang, Z., Zhokin, A., Zimmer, M., Zimmermann, W., Bunyatyan, A., Zomer, F., Zuber, K., H1 Collaboration, Burke, Stephen, Buschhorn, G., Campbell, A. J., Carli, T., Charles, F., Clarke, D., Clegg, Arthur B., Clerbaux, B., Appuhn, R. D., Colombo, M., Contreras, J. G., Cormack, C., Coughlan, J. A., Courau, A., Coutures, C., Cozzika, G., Criegee, L., Cussans, D. G., Cvach, J., Arpagaus, M., Dagoret, S., Dainton, J. B., Danilov, M., Dau, W. D., Daum, K., David, M., Deffur, E., Delcourt, B., Del Buono, L., de Roeck, A., Babaev, A., De Wolf, E. A., Di Nezza, P., Dollfus, C., Dowell, J. D., Dreis, H. B., Droutskoi, V., Duboc, J., Duellmann, Dirk, Dunger, O., Duhm, H., Baehr, J., Ebert, J., Ebert, T. R., Eckerlin, Guenter, Efremenko, V., Egli, S., Ehrlichmann, H., Eichenberger, S., Eichler, R., Eisele, F., Eisenhandler, E., Ban, J., Ellison, R. J., Elsen, E., Erdmann, M., Erdmann, W., Evrard, E., Favart, L., Fedotov, A., Feeken, D., Felst, R., and Feltesse, J.
- Subjects
electron p: deep inelastic scattering ,gap [rapidity] ,electron p [deep inelastic scattering] ,diffraction ,structure function [p] ,momentum transfer [dependence] ,296 GeV-cms ,small-x [structure function] ,x-dependence ,deep inelastic scattering: electron p ,ddc:530 ,p: structure function ,colliding beams [electron p] ,DESY DESY HERA Stor Stor ,high [momentum transfer] ,bibliography ,electron p [colliding beams] ,rapidity: gap ,colliding beams: electron p ,electron p: colliding beams ,dependence: momentum transfer ,deep inelastic scattering [electron p] ,structure function: small-x ,H1 ,momentum transfer: high ,experimental results - Abstract
32 pp. (1995)., A measurement of the proton structure function F 2 ( x , Q 2 ) is reported for momentum transfers squared Q 2 between 4.5 GeV 2 and 1600 GeV 2 and for Bjorken x between 1.8 × 10 −14 and 0.13 using data collected by the HERA experiment H1 in 1993. It is observed that F 2 increases significantly with decreasing x , confirming our previous measurement made with one tenth of the data available in this analysis. The Q 2 dependence is approximately logarithmic over the full kinematic range covered. The subsample of deep inelastic events with a large pseudo-rapidity gap in the hadronic energy flow close to the proton remnant is used to measure the “diffractive” contribution to F 2 .
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- 1995
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- View/download PDF
29. Measurement of the $e^{+}$ and $e^{-}$ induced charged current cross-sections at HERA
- Author
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Aid, S., Andreev, V., Andrieu, B., Appuhn, R. D., Arpagaus, M., Babaev, A., Bahr, J., Ban, J., Ban, Y., Baranov, P., Barrelet, E., Barschke, R., Bartel, W., Barth, M., Bassler, U., Beck, H. P., Behrend, H. J., Belousov, A., Berger, Christoph, Bernardi, G., Bernet, R., Bertrand-Coremans, G., Besancon, M., Beyer, R., Biddulph, P., Bispham, P., Bizot, J. C., Blobel, V., Borras, K., Botterweck, F., Boudry, V., Braemer, A., Brasse, F., Braunschweig, W., Brisson, V., Bruncko, D., Brune, C., Buchholz, R., Bungener, L., Burger, J., Busser, F. W., Bunyatyan, A., Burke, Stephen, Burton, M., Buschhorn, G., Campbell, A. J., Carli, T., Charles, F., Charlet, M., Clarke, D., Clegg, Arthur B., Clerbaux, B., Colombo, M., Contreras, J. G., Cormack, C., Coughlan, J. A., Courau, A., Coutures, C., Cozzika, G., Criegee, L., Cussans, D. G., Cvach, J., Dagoret, S., Dainton, J. B., Dau, W. D., Daum, K., David, M., Delcourt, B., Del Buono, L., de Roeck, A., De Wolf, E. A., Di Nezza, P., Dollfus, C., Dowell, J. D., Dreis, H. B., Droutskoi, V., Duboc, J., Duellmann, Dirk, Dunger, O., Duhm, H., Ebert, J., Ebert, T. R., Eckerlin, Guenter, Efremenko, V., Egli, S., Ehrlichmann, H., Eichenberger, S., Eichler, R., Eisele, F., Eisenhandler, E., Ellison, R. J., Elsen, E., Erdmann, M., Erdmann, W., Evrard, E., Favart, L., Fedotov, A., Feeken, D., Felst, R., Feltesse, J., Ferencei, J., Ferrarotto, F., Flamm, K., Fleischer, M., Flieser, M., Flugge, G., Fomenko, A., Fominykh, B., Forbush, M., Formanek, J., Foster, J. M., Franke, G., Fretwurst, E., Gabathuler, E., Gabathuler, K., Garvey, J., Gayler, Joerg, Gebauer, M., Gellrich, A., Genzel, H., Gerhards, R., Glazov, A., Goerlach, U., Goerlich, L., Gogitidze, N., Goldberg, M., Goldner, D., Gonzalez-Pineiro, B., Gorelov, I., Gorichev, P., Grab, C., Grassler, H., Grassler, R., Greenshaw, T., Grindhammer, Guenter, Gruber, A., Gruber, C., Haack, J., Haidt, D., Hajduk, L., Hamon, O., Hampel, M., Hapke, M., Haynes, W. J., Heatherington, J., Heinzelmann, G., Henderson, R. C. W., Henschel, H., Herynek, I., Hess, M. F., Hildesheim, W., Hill, P., Hiller, K. H., Hilton, C. D., Hladky, J., Hoeger, K. C., Hoppner, M., Horisberger, R., Hudgson, V. L., Huet, P., Hutte, M., Hufnagel, H., Ibbotson, M., Itterbeck, H., Jabiol, M. A., Jacholkowska, A., Jacobsson, C., Jaffre, M., Janoth, J., Jansen, T., Jonsson, L., Johnson, D. P., Johnson, L., Jung, H., Kalmus, P. I. P., Kant, D., Kaschowitz, R., Kasselmann, P., Kathage, U., Katzy, J., Kaufmann, H. H., Ghazaryan, Samvel, Kenyon, I. R., Kermiche, S., Keuker, C., Kiesling, Christian M., Klein, M., Kleinwort, C., Knies, G., Ko, W., Kohler, T., Kohne, J., Kolanoski, H., Kole, F., Kolya, S. D., Korbel, V., Korn, M., Kostka, P., Kotelnikov, S. K., Kramerkamper, T., Krasny, M. W., Krehbiel, H., Krucker, D., Kruger, U., Kruner-Marquis, U., Kuster, H., Kuhlen, M., Kurca, T., Kurzhofer, J., Kuznik, B., Lacour, D., Lamarche, F., Lander, R., Landon, M. P. J., Lange, W., Lanius, P., Laporte, J. F., Lebedev, A., Lehner, F., Leverenz, C., Levonian, S., Ley, C., Lindstrom, G., Link, J., Linsel, F., Lipinski, J., List, B., Lobo, G., Loch, P., Lohmander, H., Lomas, J., Lopez, G. C., Lyubimov, V., Luke, D., Magnussen, N., Malinovski, E., Mani, S., Maracek, R., Marage, P., Marks, J., Marshall, R., Martens, J., Martin, G., Martin, R., Martyn, H. U., Martyniak, J., Masson, S., Mavroidis, T., Maxfield, S. J., McMahon, S. J., Mehta, A., Meier, K., Mercer, D., Merz, T., Meyer, A., Meyer, C. A., Meyer, H., Meyer, J., Migliori, A., Mikocki, S., Milstead, D., Moreau, F., Morris, J. V., Mroczko, E., Muller, G., Muller, K., Murin, P., Nagovizin, V., Nahnhauer, R., Naroska, B., Naumann, T., Newman, Paul R., Newton, D., Neyret, D., Nguyen, H. K., Nicholls, T. C., Niebergall, F., Niebuhr, C., Niedzballa, C., Nisius, R., Nowak, G., Noyes, G. W., Nyberg-Werther, M., Oakden, M., Oberlack, H., Obrock, U., Olsson, J. E., Ozerov, D., Panaro, E., Panitch, A., Pascaud, C., Patel, G. D., Peppel, E., Perez, E., Phillips, J. P., Pichler, C., Pieuchot, A., Pitzl, D., Pope, G., Prell, Soeren A., Prosi, R., Rabbertz, K., Radel, G., Raupach, F., Reimer, P., Reinshagen, S., Ribarics, P., Rick, H., Riech, V., Riedlberger, J., Riess, S., Rietz, M., Rizvi, E., Robertson, S. M., Robmann, P., Roloff, H. E., Roosen, R., Rosenbauer, K., Rostovtsev, A., Rouse, F., Royon, C., Ruter, K., Rusakov, S., Rybicki, K., Rylko, R., Sahlmann, N., Sankey, D. P., Schacht, P., Schiek, S., Schlief, S., Schleper, P., von Schlippe, W., Schmidt, D., Schmidt, G., Schoning, A., Schroder, V., Schuhmann, E., Schwab, B., Sciacca, G., Sefkow, F., Seidel, M., Sell, R., Semenov, A., Chekelian, V. I., Sheviakov, I., Shtarkov, L. N., Siegmon, G., Siewert, U., Sirois, Y., Skillicorn, I. O., Smirnov, P., Smith, J. R., Solochenko, V., Solovev, Ya., Spiekermann, J., Spielman, S., Spitzer, H., Starosta, R., Steenbock, M., Steffen, P., Steinberg, R., Stella, B., Stephens, K., Stier, J., Stiewe, J., Stosslein, U., Stolze, K., Strachota, J., Straumann, U., Struczinski, W., Sutton, J. P., Tapprogge, S., Chernyshov, V., Thiebaux, C., Thompson, Graham, Truoel, Peter, Turnau, J., Tutas, J., Ulkes, P., Usik, A., Valkar, S., Valkarova, A., Vallee, C., Vandenplas, D., Van Esch, P., Van Mechelen, P., Vartapetian, A., Vazdik, Y., Verrecchia, P., Villet, G., Wacker, K., Wagener, A., Wagener, M., Walther, A., Weber, G., Weber, M., Wegener, D., Wegner, A., Wellisch, H. P., West, L. R., Willard, S., Winde, M., Winter, G. G., Wittek, C., Wright, A. E., Wunsch, E., Wulff, N., Yiou, T. P., Zacek, J., Zarbock, D., Zhang, Z., Zhokin, A., Zimmer, M., Zimmermann, W., Zomer, F., Zuber, K., zur Nedden, M., and H1 Collaboration
- Subjects
propagator [W] ,W: propagator ,+%28n%29hadron+neutrino%2Fe%22">electron p --> (n)hadron neutrino/e ,transverse momentum: high ,296 GeV-cms ,+%28n%29hadron+antineutrino%2Fe%22">positron p --> (n)hadron antineutrino/e ,high [transverse momentum] ,charged current ,positron p [colliding beams] ,hadron: multiple production ,propagator: mass ,ddc:530 ,hadron [multiple production] ,colliding beams [electron p] ,multiple production [hadron] ,channel cross section ,mass [propagator] ,electron p [colliding beams] ,positron p: colliding beams ,colliding beams [positron p] ,colliding beams: electron p ,DESY HERA Stor ,electron p: colliding beams ,multiple production: hadron ,colliding beams: positron p ,H1 ,propagator [mass] ,mass: propagator ,experimental results - Abstract
21 pp. (1995)., The cross sections for the charged current processes ${e~{-}p}\rightarrow{\nu_e+hadrons}$ and, for the first time, ${e~{+}p}\rightarrow{\overline{\nu}_e+hadrons}$ are measured at HERA for transverse momenta larger than 25 GeV.
- Published
- 1995
30. Photoproduction of J /$\psi$ mesons at HERA
- Author
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Ahmed, T., Aid, S., Andreev, V., Andrieu, B., Appuhn, R. D., Arpagaus, M., Babaev, A., Bahr, J., Ban, J., Baranov, P., Barrelet, E., Bartel, W., Barth, M., Bassler, U., Beck, H. P., Behrend, H. J., Belousov, A., Berger, Christoph, Bergstein, H., Bernardi, G., Bernet, R., Bertrand-Coremans, G., Besancon, M., Beyer, R., Biddulph, P., Bizot, J. C., Blobel, V., Borras, K., Botterweck, F., Boudry, V., Braemer, A., Brasse, F., Braunschweig, W., Brisson, V., Bruncko, D., Brune, C., Buchholz, R., Bungener, L., Burger, J., Busser, F. W., Bunyatyan, A., Burke, Stephen, Buschhorn, G., Campbell, A. J., Carli, T., Charles, F., Clarke, D., Clegg, Arthur B., Colombo, M., Contreras, J. G., Coughlan, J. A., Courau, A., Coutures, C., Cozzika, G., Criegee, L., Cussans, D. G., Cvach, J., Dagoret, S., Dainton, J. B., Danilov, M., Dau, W. D., Daum, K., David, M., Deffur, E., Delcourt, B., Del Buono, L., de Roeck, A., De Wolf, E. A., Di Nezza, P., Dollfus, C., Dowell, J. D., Dreis, H. B., Duboc, J., Duellmann, Dirk, Dunger, O., Duhm, H., Ebert, J., Ebert, T. R., Eckerlin, Guenter, Efremenko, V., Egli, S., Ehrlichmann, H., Eichenberger, S., Eichler, R., Eisele, F., Eisenhandler, E., Ellison, R. J., Elsen, E., Erdmann, M., Erdmann, W., Evrard, E., Favart, L., Fedotov, A., Feeken, D., Felst, R., Feltesse, J., Ferencei, J., Ferrarotto, F., Flamm, K., Fleischer, M., Flieser, M., Flugge, G., Fomenko, A., Fominykh, B., Forbush, M., Formanek, J., Foster, J. M., Franke, G., Fretwurst, E., Gabathuler, E., Gabathuler, K., Gamerdinger, K., Garvey, J., Gayler, Joerg, Gebauer, M., Gellrich, A., Genzel, H., Gerhards, R., Goerlach, U., Goerlich, L., Gogitidze, N., Goldberg, M., Goldner, D., Gonzalez-Pineiro, B., Goodall, A. M., Gorelov, I., Gorichev, P., Grab, C., Grassler, H., Grassler, R., Greenshaw, T., Grindhammer, Guenter, Gruber, A., Gruber, C., Haack, J., Haidt, D., Hajduk, L., Hamon, O., Hampel, M., Hanlon, E. M., Hapke, M., Haynes, W. J., Heatherington, J., Hedberg, V., Heinzelmann, G., Henderson, R. C. W., Henschel, H., Herma, R., Herynek, I., Hess, M. F., Hildesheim, W., Hill, P., Hiller, K. H., Hilton, C. D., Hladky, J., Hoeger, K. C., Hoppner, M., Horisberger, R., Huet, P., Hufnagel, H., Ibbotson, M., Itterbeck, H., Jabiol, M. A., Jacholkowska, A., Jacobsson, C., Jaffre, M., Janoth, J., Jansen, T., Jonsson, L., Johannsen, K., Johnson, D. P., Johnson, L., Jung, H., Kalmus, P. I. P., Kant, D., Kaschowitz, R., Kasselmann, P., Kathage, U., Kaufmann, H. H., Ghazaryan, Samvel, Kenyon, I. R., Kermiche, S., Keuker, C., Kiesling, Christian M., Klein, M., Kleinwort, C., Knies, G., Ko, W., Kohler, T., Kolanoski, H., Kole, F., Kolya, S. D., Korbel, V., Korn, M., Kostka, P., Kotelnikov, S. K., Krasny, M. W., Krehbiel, H., Krucker, D., Kruger, U., Kruner-Marquis, U., Kubenka, J. P., Kuster, H., Kuhlen, M., Kurca, T., Kurzhofer, J., Kuznik, B., Lacour, D., Lamarche, F., Lander, R., Landon, M. P. J., Lange, W., Lanius, P., Laporte, J. F., Lebedev, A., Leverenz, C., Levonian, S., Ley, C., Lindner, A., Lindstrom, G., Linsel, F., Lipinski, J., List, B., Loch, P., Lohmander, H., Lopez, G. C., Luke, D., Magnussen, N., Malinovski, E., Mani, S., Maracek, R., Marage, P., Marks, J., Marshall, R., Martens, J., Martin, R., Martyn, H. U., Martyniak, J., Masson, S., Mavroidis, T., Maxfield, S. J., McMahon, S. J., Mehta, A., Meier, K., Mercer, D., Merz, T., Meyer, C. A., Meyer, H., Meyer, J., Mikocki, S., Milstead, D., Moreau, F., Morris, J. V., Muller, G., Muller, K., Murin, P., Nagovizin, V., Nahnhauer, R., Naroska, B., Naumann, T., Newman, Paul R., Newton, D., Neyret, D., Nguyen, H. K., Niebergall, F., Niebuhr, C., Nisius, R., Nowak, G., Noyes, G. W., Nyberg-Werther, M., Oberlack, H., Obrock, U., Olsson, J. E., Panaro, E., Panitch, A., Pascaud, C., Patel, G. D., Peppel, E., Perez, E., Phillips, J. P., Pichler, C., Pitzl, D., Pope, G., Prell, Soeren A., Prosi, R., Radel, G., Raupach, F., Reimer, P., Reinshagen, S., Ribarics, P., Riech, V., Riedlberger, J., Riess, S., Rietz, M., Robertson, S. M., Robmann, P., Roloff, H. E., Roosen, R., Rosenbauer, K., Rostovtsev, A., Rouse, F., Royon, C., Ruter, K., Rusakov, S., Rybicki, K., Rylko, R., Sahlmann, N., Sanchez, E., Sankey, D. P., Savitsky, M., Schacht, P., Schiek, S., Schleper, P., von Schlippe, W., Schmidt, C., Schmidt, D., Schmitz, G., Schoning, A., Schroder, V., Schuhmann, E., Schwab, B., Schwind, A., Seehausen, U., Sefkow, F., Seidel, M., Sell, R., Semenov, A., Chekelian, V. I., Sheviakov, I., Shooshtari, H., Shtarkov, L. N., Siegmon, G., Siewert, U., Sirois, Y., Skillicorn, I. O., Smirnov, P., Smith, J. R., Solovev, Ya., Spitzer, H., Starosta, R., Steenbock, M., Steffen, P., Steinberg, R., Stella, B., Stephens, K., Stier, J., Stiewe, J., Stosslein, U., Strachota, J., Straumann, U., Struczinski, W., Sutton, J. P., Tapprogge, S., Taylor, Richard E., Chernyshov, V., Thiebaux, C., Thompson, Graham, Tikhomirov, I., Truoel, Peter, Turnau, J., Tutas, J., Ulkes, P., Usik, A., Valkar, S., Valkarova, A., Vallee, C., Van Esch, P., Van Mechelen, P., Vartapetian, A., Vazdik, Y., Vecko, M., Verrecchia, P., Villet, G., Wacker, K., Wagener, A., Wagener, M., Walker, I. W., Walther, A., Weber, G., Weber, M., Wegener, D., Wegner, A., Wellisch, H. P., West, L. R., Willard, S., Winde, M., Winter, G. G., Wright, A. E., Wunsch, E., Wulff, N., Yiou, T. P., Zacek, J., Zarbock, D., Zhang, Z., Zimmer, M., Zimmermann, W., Zomer, F., Zuber, K., and H1 Collaboration
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spectrum: momentum transfer ,electron p: inclusive reaction ,J/psi(3100) [photoproduction] ,electroproduction: J/psi(3100) ,+muon%2B+muon%22">J/psi(3100) --> muon+ muon ,momentum transfer [spectrum] ,transverse momentum [differential cross section] ,296 GeV-cms ,+positron+electron%22">J/psi(3100) --> positron electron ,leptonic decay: J/psi(3100) ,differential cross section [transverse momentum] ,photoproduction [J/psi(3100)] ,J/psi(3100): photoproduction ,inclusive reaction [photon p] ,transverse momentum: differential cross section ,+J%2Fpsi%283100%29+anything%22">electron p --> J/psi(3100) anything ,ddc:530 ,channel cross section: energy dependence ,J/psi(3100) [electroproduction] ,J/psi(3100): electroproduction ,colliding beams [electron p] ,DESY DESY HERA Stor Stor ,photoproduction: J/psi(3100) ,electron p [colliding beams] ,energy dependence [channel cross section] ,J/psi(3100) [leptonic decay] ,electroproduction [J/psi(3100)] ,colliding beams: electron p ,J/psi(3100): leptonic decay ,electron p: colliding beams ,differential cross section: transverse momentum ,H1 ,momentum transfer: spectrum ,spectrum [momentum transfer] ,leptonic decay [J/psi(3100)] ,photon p: inclusive reaction ,inclusive reaction [electron p] ,experimental results - Abstract
13 pp. (1994)., We present a study of J ψ meson production in collisions of 26.7 GeV electrons with 820 GeV protons, performed with the H1-detector at the HERA collider at DESY. The J ψ mesons are detected via their leptonic decays both to electrons and muons. Requiring exactly two particles in the detector, a cross section of σ(ep → J ψ X) = (8.8±2.0±2.2) nb is determined for 30 GeV ≤ W γp ≤ 180 GeV and Q 2 ≲ 4 GeV 2 . Using the flux of quasi-real photons with Q 2 ≲ 4 GeV 2 , a total production cross section of σ ( γp → J / ψX ) = (56±13±14) nb is derived at an average W γp =90 GeV. The distribution of the squared momentum transfer t from the proton to the J ψ can be fitted using an exponential exp(− b ∥ t ∥) below a ∥ t ∥ of 0.75 GeV 2 yielding a slope parameter of b = (4.7±1.9) GeV −2 .
- Published
- 1994
31. Hadronic Final States and QCD: Summary
- Author
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Gehrmann, Thomas, primary, Grindhammer, Guenter, additional, O'Dell, Vivian, additional, and Walczak, Roman, additional
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- 2008
- Full Text
- View/download PDF
32. Studies of multihadronic final states in photon-photon interactions
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Behrend, H. J., Criegee, L., Field, J. H., Franke, G., Jung, H., Meyer, J., Podobrin, O., Schroder, V., Winter, G. G., Bussey, P. J., Campbell, A. J., Hendry, D., Lumsdon, S., Skillicorn, I. O., Ahme, J., Blobel, V., Feindt, M., Fenner, H., Harjes, J., Kohne, J., Peters, J. H., Spitzer, H., Weihrich, T., Apel, W. D., Engler, J., Flugge, G., Fries, D. C., Fuster, J., Gamerdinger, K., Grosse-Wiesmann, P., Kuster, H., Muller, H., Ranitzsch, K. H., Schneider, H., de Boer, W., Buschhorn, G., Grindhammer, Guenter, Gunderson, B., Kiesling, Christian M., Kotthaus, R., Kroha, H., Luers, D., Oberlach, H., Schacht, P., Scholz, S., Wiedenmann, W., Davier, M., Grivaz, J. F., Haissinski, J., Journe, V., Le Diberder, F., Veillet, J. J., Blohm, K., George, R., Goldberg, M., Hamon, O., Kapusta, Frederic, Poggioli, L., Rivoal, M., d'Agostini, G., Ferrarotto, F., Iacovacci, M., Shooshtari, G., Stella, B., Cozzika, G., Ducros, Y., Alexander, G., Beck, A., Bella, G., Grunhaus, J., Klatchko, A., Levy, A., Milstene, C., and CELLO Collaboration
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two-photon [exchange] ,fragmentation [model] ,vector dominance ,momentum transfer [cross section] ,jet [electroproduction] ,interaction [photon photon] ,photon photon: interaction ,jet: electroproduction ,cross section: momentum transfer ,hadron: multiple production ,spectrum: transverse momentum ,ddc:530 ,angular distribution ,electron positron [colliding beams] ,hadron [multiple production] ,multiple production [hadron] ,electroproduction [jet] ,exchange: two-photon ,photon photon [interaction] ,quark model parton ,electron positron: colliding beams ,transverse momentum [spectrum] ,((4 ,electroproduction: jet ,interaction: photon photon ,multiple production: hadron ,transverse momentum: spectrum ,colliding beams: electron positron ,model: fragmentation ,DESY PETRA Stor ,colliding beams [electron positron] ,two-photon: exchange ,CELLO ,spectrum [transverse momentum] ,thrust [jet] ,jet: thrust ,exchange [two-photon] ,experimental results - Abstract
24 pp. (1991)., We have measured the cross section and $Q^2$-dependence of the reaction γγ→ multihadrons, using the CELLO detector at DESY, for visible final-state masses between 4 and 9 GeV. The data are well fitted by an incoherent sum of Generalised Vector Meson Dominance and Quark Parton Model terms, but at lowQ2 require the addition of a third component which resembles the QPM but is less two-jet-like. With and without this term, the GVDM cross section atQ2=0 is found to be 200±20 and 250±25 nb, respectively.
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- 1991
33. Jets and Prompt Photons in Photoproduction at HERA
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Grindhammer, Günter
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- 2003
- Full Text
- View/download PDF
34. Production of charged kaons by $e^+ e^-$ collisions between $\sqrt s$ = 3.6 and 5-GeV
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Brandelik, R., Braunschweig, W., Gadermann, E., Hultschig, H., Joos, P., Koch, W., Kotz, U., Krehbiel, H., Kreinick, D., McNeely, W. A., Moffeit, K. C., Romer, O., Martyn, H.-U., Rusch, R., Wiik, B. H., Wolf, G., Grindhammer, Guenter, Ludwig, J., Mess, K. H., Petersen, A., Poelz, G., Ringel, J., Sauerberg, K., Sander, H. G., Schmueser, Peter, de Boer, W., Buschhorn, G., Gunderson, B., Kotthaus, R., Lierl, H., Oberlack, H., Schliwa, M., Orito, S., Suda, T., Schmitz, D., Totsuka, Y., Yamada, S., DASP Collaboration, Strum, W., Wallraff, W., Cords, D., Felst, R., and Fries, R.
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INCLUSIVE REACTION [TOTAL CROSS SECTION] ,TOTAL CROSS SECTION [INCLUSIVE REACTION] ,INCLUSIVE REACTION: DIFFERENTIAL CROSS SECTION ,+K%2B+ANYTHING%22">ELECTRON POSITRON --> K+ ANYTHING ,K-: FINAL STATE ,K+: FINAL STATE ,FINAL STATE [K-] ,TOTAL CROSS SECTION: ENERGY DEPENDENCE ,K- [FINAL STATE] ,ENERGY DEPENDENCE [TOTAL CROSS SECTION] ,ENERGY DEPENDENCE: YIELD ,+K-+ANYTHING%22">ELECTRON POSITRON --> K- ANYTHING ,ELECTRON POSITRON: INCLUSIVE REACTION ,COLLIDING BEAMS [ELECTRON POSITRON] ,DIFFERENTIAL CROSS SECTION [INCLUSIVE REACTION] ,K- [ELECTROPRODUCTION] ,ANNIHILATION: ELECTRON POSITRON ,ELECTRON POSITRON: COLLIDING BEAMS ,ELECTROPRODUCTION [K-] ,RATIO [TOTAL CROSS SECTION] ,K-: ELECTROPRODUCTION ,ELECTROPRODUCTION: K ,ELECTRON POSITRON [ANNIHILATION] ,ANNIHILATION [ELECTRON POSITRON] ,K+: ELECTROPRODUCTION ,ELECTROPRODUCTION: K+ ,3.6-5.0 GEV-CMS ,MAGNETIC SPECTROMETER: DASP ,INCLUSIVE REACTION: TOTAL CROSS SECTION ,YIELD [ENERGY DEPENDENCE] ,INCLUSIVE REACTION [DIFFERENTIAL CROSS SECTION] ,K: YIELD ,DIFFERENTIAL CROSS SECTION: INCLUSIVE REACTION ,ddc:530 ,FINAL STATE [K+] ,TOTAL CROSS SECTION: RATIO ,COLLIDING BEAMS: ELECTRON POSITRON ,EXPERIMENTAL RESULTS ,K+ [ELECTROPRODUCTION] ,K+ [FINAL STATE] ,TOTAL CROSS SECTION: INCLUSIVE REACTION ,DESY DORIS STOR ,DASP [MAGNETIC SPECTROMETER] ,FINAL STATE: K+ ,FINAL STATE: K ,ELECTRON POSITRON [COLLIDING BEAMS] ,INCLUSIVE REACTION [ELECTRON POSITRON] ,ELECTROPRODUCTION [K+] ,YIELD [K] ,ELECTRON POSITRON: ANNIHILATION - Abstract
(1977). doi:10.1016/0370-2693(77)90394-X, The total cross section for K ± production in e + e − collisions was measured for cms energies between 3.6 and 5 GeV and was found to increase by a factor of 2–3 from 3.6 to 4.1 GeV.
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- 1977
35. On the semileptonic decay of charmed hadrons
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Brandelik, R., Braunschweig, W., Gadermann, E., Hultschig, H., Joos, P., Koch, W., Kotz, U., Krehbiel, H., Kreinick, D., Lynch, H. L., McNeely, W. A., Mikenberg, G., Martyn, H.-U., Moffeit, K. C., Notz, D., Rusch, R., Schliwa, M., Wiik, B. H., Wolf, G., Grindhammer, Guenter, Ludwig, J., Mess, K. H., Petersen, A., Sander, H. G., Poelz, G., Ringel, J., Romer, O., Sauerberg, K., Schmueser, Peter, de Boer, W., Buschhorn, G., Fues, W., von Gagern, C., Gunderson, B., Schmitz, D., Kotthaus, R., Lierl, H., Oberlack, H., Orito, S., Suda, T., Totsuka, Y., Yamada, S., DASP Collaboration, Sturm, W., Wallraff, W., Cords, D., Felst, R., and Fries, R.
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K: FINAL STATE ,+%28N%29HADRON+3ELECTRON%22">ELECTRON POSITRON --> (N)HADRON 3ELECTRON ,ELECTRON [FINAL STATE] ,HADRON [FINAL STATE] ,CHARMED HADRON: SEMILEPTONIC DECAY ,CHARMED HADRON: LEPTONIC DECAY ,FINAL STATE [ANTINEUTRINO/E/] ,ANTINEUTRINO/E/ [FINAL STATE] ,CHARMED HADRON [LEPTONIC DECAY] ,Nuclear Experiment ,FINAL STATE [HADRON] ,+K+ELECTRON+ANTINEUTRINO%2FE%22">D --> K ELECTRON ANTINEUTRINO/E ,+K*%28892%29+ELECTRON+ANTINEUTRINO%2FE%22">D --> K*(892) ELECTRON ANTINEUTRINO/E ,K [FINAL STATE] ,FINAL STATE [ELECTRON] ,COLLIDING BEAMS [ELECTRON POSITRON] ,SEMILEPTONIC DECAY [CHARMED HADRON] ,ANNIHILATION: ELECTRON POSITRON ,LEPTONIC DECAY: CHARMED HADRON ,FINAL STATE: ELECTRON ,ELECTRON POSITRON: COLLIDING BEAMS ,D: SEMILEPTONIC DECAY ,ELECTRON POSITRON [ANNIHILATION] ,SEMILEPTONIC DECAY: BRANCHING RATIO ,+2CHARGED+PARTICLE+ELECTRON+ANYTHING%22">ELECTRON POSITRON --> 2CHARGED PARTICLE ELECTRON ANYTHING ,ANNIHILATION [ELECTRON POSITRON] ,BRANCHING RATIO [SEMILEPTONIC DECAY] ,HADRON: FINAL STATE ,FINAL STATE: HADRON ,FINAL STATE: K ,4.0-5.2 GEV-CMS ,FINAL STATE: ANTINEUTRINO/E ,SEMILEPTONIC DECAY [D] ,ANTINEUTRINO/E/: FINAL STATE ,DASP [MAGNETIC DETECTOR] ,ddc:530 ,COLLIDING BEAMS: ELECTRON POSITRON ,EXPERIMENTAL RESULTS ,ELECTRON: FINAL STATE ,DESY DORIS STOR ,High Energy Physics::Phenomenology ,K*(892) ,LEPTONIC DECAY [CHARMED HADRON] ,FINAL STATE [K] ,ELECTRON POSITRON [COLLIDING BEAMS] ,High Energy Physics::Experiment ,MAGNETIC DETECTOR: DASP ,ELECTRON POSITRON: ANNIHILATION - Abstract
(1977). doi:10.1016/0370-2693(77)90684-0, The semileptonic and leptonic decay modes of charmed hadrons produced in e + e − collisions above 4 GeV in the cm have been investigated by selecting events with a single electron plus at least two charged tracks. The electron momentum spectrum peaks near 0.5 GeV/ c with few events above 0.7 GeV/ c . The spectrum excludes large rates for the decays D → e v e and D → e v e π , but is compatible with D → e v e K ∗ (892) , D → e v e K or a mixture of both. The semileptonic branching ratio is obtained both by comparing the inclusive electron cross section with the total cross section attributable to charm, and by studying the fraction of events containing a second electron. The semileptonic charm branching ratios obtained are 0.11 ± 0.03 and 0.16 ± 0.06 respectively. A single event with three electrons and hadrons is found, consistent with the estimated background. The 90% confidence upper limit for σ (e + e − → 3e + hadrons) is 0.1 nb.
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- 1977
36. $\pi^0$-electroproduction on hydrogen near threshold at four-momentum transfers of 0.2, 0.4 and 0.6 $GeV^2$
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Brauel, P., Busser, F. W., Canzler, Th., Cords, D., Dix, W. R., Felst, R., Grindhammer, Guenter, Kollmann, W.-D., Krehbiel, H., Meyer, J., and Weber, G.
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Nuclear Theory ,ddc:530 ,Nuclear Experiment - Abstract
1-9 (1974)., The reaction e + p → e + π 0 + p was measured near the one pion threshold, detecting the final electron and proton in coincidence for values of q 2 = 0.2, 0.4 and 0.6 GeV 2 . The slope of the cross section at threshold is determined. The data are compared with those of the e + p → e + π + + n reaction, measured simultaneously, and with the results of pseudovector Born approximation and with dispersion theoretical calculations.
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- 1974
37. The Three Photon Final State Produced in $e^+ e^-$ Collision at 3.6-GeV and at the $\psi$-prime
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Braunschweig, W., Martyn, H.-U., Sander, H. G., Schmitz, D., Sturm, W., Wallraff, W., Berkelman, Karl, Cords, D., Felst, R., Fries, R., Gadermann, E., Hultschig, H., Joos, P., Koch, W., Kotz, U., Krehbiel, H., Kreinick, D., McNeely, W. A., Moffeit, K. C., Petersen, A., Rusch, R., Schliwa, M., Grindhammer, Guenter, Ludwig, J., Mess, K. H., Poelz, G., Ringel, J., Sauerberg, K., Schmueser, Peter, De Boer, W., Buschhorn, G., Gunderson, B., Kotthaus, R., Lierl, H., Oberlack, H., Pretzl, K., Orito, S., Suda, T., Totsuka, Y., and Yamada, S.
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ELECTROPRODUCTION: X(2830) ,RADIATIVE DECAY: WIDTH ,QUANTUM ELECTRODYNAMICS ,PSI(3700): ELECTROPRODUCTION ,PSI(3700): BRANCHING RATIO ,+X%282830%29+PHOTON%22">PSI(3700) --> X(2830) PHOTON ,EXPERIMENTAL RESULTS: DESY DORIS STOR ,PHOTON: FINAL STATE ,X(2830): ELECTROPRODUCTION ,WIDTH: BOUNDARY CONDITION ,DESY DORIS STOR: EXPERIMENTAL RESULTS ,WIDTH: RADIATIVE DECAY ,COLLIDING BEAMS: ELECTRON POSITRON ,FINAL STATE: PHOTON ,ELECTROPRODUCTION: PSI(3700) ,TOTAL CROSS SECTION: BOUNDARY CONDITION ,FINAL STATE: (3PHOTON) ,ANNIHILATION: ELECTRON POSITRON ,+ETA%28549%29+PHOTON%22">ELECTRON POSITRON --> ETA(549) PHOTON ,ELECTROPRODUCTION: ETA(549) ,ELECTRON POSITRON: COLLIDING BEAMS ,PSI(3700): RADIATIVE DECAY ,MAGNETIC DETECTOR: DASP ,3.6: 3.7 GEV-CMS ,ELECTRON POSITRON: ANNIHILATION ,ETA(549): ELECTROPRODUCTION ,+X%282830%29+PHOTON%22">ELECTRON POSITRON --> X(2830) PHOTON - Abstract
(1977). doi:10.1016/0370-2693(77)90115-0, The three photon final state produced in e + e − collisions at 3.6 GeV and at the mass of the ψ′ resonance has been measured using the nonmagnetic part of the double arm spectrometer DASP. A total of 31 events is observed outside the resonance region compared to 35.1 events predicted from QED. At the mass of the ψ′ 49 events are observed compared to 37.2 events expected from QED. Limits on radiative decays via intermediate states are given.
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- 1977
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38. Inclusive Hadron Production by $e^+ e^-$ Annihilation for s Between 13 and 25 GeV$^2$
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Brandelik, R., Braunschweig, W., Martyn, H.-U., Sander, H. G., Schmitz, D., Strum, W., Wallraff, W., Cords, D., Felst, R., Fries, R., Gadermann, E., Hultschig, H., Joos, P., Koch, W., Kotz, U., Krehbiel, H., Kreinick, D., McNeely, W. A., Moffeit, K. C., Romer, O., Rusch, R., Wiik, B. H., Wolf, G., Grindhammer, Guenter, Ludwig, J., Mess, K. H., Petersen, A., Poelz, G., Ringel, J., Sauerberg, K., Schmueser, Peter, De Boer, W., Buschhorn, G., Gunderson, B., Kottkaus, R., Lierl, H., Oberlack, H., Schliwa, M., Orito, S., Suda, T., Totsuka, Y., and Yamada, S.
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DESY DORIS STOR ,INCLUSIVE REACTION: DIFFERENTIAL CROSS SECTION ,ELECTRON POSITRON: INCLUSIVE REACTION ,ANNIHILATION: ELECTRON POSITRON ,+CHARGED+HADRON+ANYTHING%22">ELECTRON POSITRON --> CHARGED HADRON ANYTHING ,HADRON: ELECTROPRODUCTION ,ELECTRON POSITRON: COLLIDING BEAMS ,HADRON: CHARGED PARTICLE ,DIFFERENTIAL CROSS SECTION: INCLUSIVE REACTION ,ELECTROPRODUCTION: HADRON ,COLLIDING BEAMS: ELECTRON POSITRON ,SCALING ,EXPERIMENTAL RESULTS ,3.6-5.0 GEV-CMS ,ELECTRON POSITRON: ANNIHILATION ,MAGNETIC SPECTROMETER: DASP - Abstract
(1977). doi:10.1016/0370-2693(77)90393-8, Charged hadron production via e + e − → h ± X where h ± = π ± , K ± , p ̄ has been measured for s values between 13 and 25 GeV 2 . Inclusive cross sections and the evidence for scaling are presented.
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- 1977
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39. Measurements of $\tau$ decay modes and a precise determination of the mass
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Braunschweig, W., Martyn, H.-U., Hultschig, H., Joos, P., Koch, W., Kotz, U., Krehbiel, H., Kreinick, D., Lynch, H. L., McNeely, W. A., Mikenberg, G., Moffeit, K. C., Sander, H. G., Notz, Dieter, Rusch, R., Schliwa, M., Wiik, B. H., Wolf, G., Grindhammer, Guenter, Ludwig, J., Mess, K. H., Petersen, A., Poelz, G., Schmitz, D., Ringel, J., Romer, O., Sauerberg, K., Brandelik, R., Schmueser, Peter, de Boer, W., Buschhorn, G., Fues, W., von Gagern, C., Gunderson, B., Sturm, W., Kotthaus, R., Lierl, H., Oberlack, H., Orito, S., Suda, T., Totsuka, Y., Yamada, S., DASP Collaboration, Wallraff, W., Cords, D., Felst, R., Fries, R., and Gadermann, E.
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+CHARGED+HADRON+NEUTRINO%2FTAU%2F+%28N%29PHOTON%22">TAU --> CHARGED HADRON NEUTRINO/TAU/ (N)PHOTON ,ELECTRON [FINAL STATE] ,FINAL STATE: MUON ,ELECTRON MUON: UNIVERSALITY ,+MUON+NEUTRINO%2FTAU%2F+ANTINEUTRINO%2FMU%22">TAU --> MUON NEUTRINO/TAU/ ANTINEUTRINO/MU ,TAU [ELECTROPRODUCTION] ,DIFFERENTIAL CROSS SECTION: ENERGY DEPENDENCE ,FINAL STATE [PHOTON] ,FINAL STATE [ANTINEUTRINO/E/] ,FINAL STATE [MUON] ,FINAL STATE: NEUTRINO/TAU ,ANTINEUTRINO/E/ [FINAL STATE] ,MUON [FINAL STATE] ,TAU: PAIR PRODUCTION ,TAU: BRANCHING RATIO ,TAU: MASS ,MUON: FINAL STATE ,FINAL STATE [ELECTRON] ,WEAK INTERACTION: CURRENT ,ELECTRON POSITRON: INCLUSIVE REACTION ,PAIR PRODUCTION: TAU ,COLLIDING BEAMS [ELECTRON POSITRON] ,ANNIHILATION: ELECTRON POSITRON ,PAIR PRODUCTION [TAU] ,NEUTRINO/TAU/ [FINAL STATE] ,FINAL STATE: ELECTRON ,+ELECTRON+NEUTRINO%2FTAU%2F+ANTINEUTRINO%2FE%22">TAU --> ELECTRON NEUTRINO/TAU/ ANTINEUTRINO/E ,ELECTRON POSITRON: COLLIDING BEAMS ,ELECTRON POSITRON [ANNIHILATION] ,ANNIHILATION [ELECTRON POSITRON] ,FINAL STATE [NEUTRINO/TAU/] ,3.1-5.2 GEV-CM ,BRANCHING RATIO [TAU] ,MAGNETIC SPECTROMETER: DASP ,+%28N%29CHARGED+HADRON+NEUTRINO%2FTAU%2F+%28N%29PHOTON%22">TAU --> (N)CHARGED HADRON NEUTRINO/TAU/ (N)PHOTON ,ANTINEUTRINO/MU/: FINAL STATE ,FINAL STATE [ANTINEUTRINO/MU/] ,PHOTON [FINAL STATE] ,TAU: ELECTROPRODUCTION ,FINAL STATE: ANTINEUTRINO/E ,TAU [PAIR PRODUCTION] ,MASS [TAU] ,PHOTON: FINAL STATE ,NEUTRINO/TAU/: FINAL STATE ,ANTINEUTRINO/MU/ [FINAL STATE] ,ANTINEUTRINO/E/: FINAL STATE ,ELECTROPRODUCTION: TAU ,ddc:530 ,TAU [DECAY MODES] ,FINAL STATE: ANTINEUTRINO/MU ,COLLIDING BEAMS: ELECTRON POSITRON ,ELECTROPRODUCTION [TAU] ,EXPERIMENTAL RESULTS ,ELECTRON: FINAL STATE ,FINAL STATE: PHOTON ,DESY DORIS STOR ,DASP [MAGNETIC SPECTROMETER] ,TAU [MASS] ,UNIVERSALITY [ELECTRON MUON] ,CURRENT [WEAK INTERACTION] ,DECAY MODES [TAU] ,ELECTRON POSITRON [COLLIDING BEAMS] ,INCLUSIVE REACTION [ELECTRON POSITRON] ,ENERGY DEPENDENCE [DIFFERENTIAL CROSS SECTION] ,MASS: TAU ,DECAY MODES: TAU ,TAU: DECAY MODES ,ELECTRON POSITRON: ANNIHILATION - Abstract
(1978). doi:10.1016/0370-2693(78)90183-1, The cross sections for e + e − → e + ( μ + + non showering track + any photons have been measured for cm energies between 3.1 GeV and 5.2 GeV. We observe τ -pair production below the thresholdfor charm production and determine the τ mass to be 1.807 ± 0.020 GeV from a fit to the energy dependence of the cross section. The ration of the leptonic branching ratios B μ / B e = 0.92 ± 0.32 is consistent with eμ-universality. The following branching ratios are determined for a V-A coupling: B(τ → ν τ e ν ) = B(τ → ν τ μ ν ) = 0.182 + 0.028 . B ( τ → ν τ + charged hadron + any photons) = 0.29 ± 0.11, B ( τ → ν τ + three or more charged hadrons + any photons) = 0.35 ± 0.11.
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- 1977
40. Search for Light Leptoquark Bosons
- Author
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Behrend, H. J., Burger, J., Sindt, H., Timm, U., Winter, G. G., Zimmermann, W., Bussey, P. J., Buttar, C., Campbell, A. J., Dainton, J. B., Hendry, D., McCurrach, G., Criegee, L., Scarr, J. M., Skillicorn, I. O., Smith, K. M., Blobel, V., Feindt, M., Poppe, M., Spitzer, H., Apel, W. D., Boehrer, Armin, Engler, J., Fenner, H., Flugge, G., Fries, D. C., Fues, W., Gamerdinger, K., Grosse-Wiesmann, P., Hansmeyer, J., Henkes, T., Hopp, G., Jung, H., Knapp, J., Field, J. H., Kruger, M., Kuster, H., Mayer, P., Muller, H., Ranitzsch, K. H., Schneider, H., Wolf, J., de Boer, W., Buschhorn, G., Christiansen, W., Franke, G., Grindhammer, Guenter, Gunderson, B., Kiesling, Christian M., Kotthaus, R., Kroha, H., Luers, D., Oberlack, H., Sack, B., Schacht, P., Shooshtari, G., Fuster, J., Wiedenmann, W., Cordier, A., Davier, M., Fournier, D., Gaillard, M., Grivaz, J. F., Haissinski, J., Journe, V., Le Diberder, F., Ros, E., Holler, Y., Spadafora, A., Veillet, J. J., Fatah, B., George, R., Goldberg, M., Hamon, O., Kapusta, Frederic, Kovacs, F., Poggioli, L., Rivoal, M., Meyer, J., D'Agostini, G., Ferrarotto, F., Gaspero, Mario, Stella, B., Aleksan, R., Cozzika, G., Ducros, Y., Lavagne, Y., Ould Saada, F., Pamela, J., Schroder, V., Pierre, F., Zacek, J., Alexander, G., Bella, G., Gnat, Y., Grunhaus, J., Levy, A., and CELLO Collaboration
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LEPTOQUARK: PAIR PRODUCTION ,DESY PETRA STOR ,GOLDSTONE PARTICLE [POSTULATED PARTICLE] ,POSTULATED PARTICLE: LEPTOQUARK ,LEPTOQUARK [SEMILEPTONIC DECAY] ,S056EGT ,POSTULATED PARTICLE: GOLDSTONE PARTICLE ,PAIR PRODUCTION: LEPTOQUARK ,+%28N%29HADRON+MUON+MISSING-ENERGY%22">ELECTRON POSITRON --> (N)HADRON MUON MISSING-ENERGY ,ddc:530 ,COLLIDING BEAMS: ELECTRON POSITRON ,EXPERIMENTAL RESULTS ,SEMILEPTONIC DECAY: LEPTOQUARK ,+%28N%29HADRON+MISSING-ENERGY%22">ELECTRON POSITRON --> (N)HADRON MISSING-ENERGY ,PAIR PRODUCTION [LEPTOQUARK] ,43 GEV-CMS ,COLLIDING BEAMS [ELECTRON POSITRON] ,LEPTOQUARK [PAIR PRODUCTION] ,SEMILEPTONIC DECAY [LEPTOQUARK] ,ANNIHILATION: ELECTRON POSITRON ,ELECTRON POSITRON [COLLIDING BEAMS] ,LEPTOQUARK: SEMILEPTONIC DECAY ,ELECTRON POSITRON: COLLIDING BEAMS ,ELECTRON POSITRON [ANNIHILATION] ,ANNIHILATION [ELECTRON POSITRON] ,+%28N%29HADRON+2MUON%22">ELECTRON POSITRON --> (N)HADRON 2MUON ,CELLO ,LEPTOQUARK [POSTULATED PARTICLE] ,ELECTRON POSITRON: ANNIHILATION - Abstract
5 pp. (1987)., A search for light leptoquarks decaying into a lepton and a quark has been performed using the CELLO detector at the storage ring PETRA. Decay modes have been looked for where the lepton is either a muon or a neutrino, the latter being detected by a high missing transverse momentum. Except for one event previously reported no further two-jet events with two isolated muons were observed. No evidence for pair production of these particles has been found in other final states configurations. Our results are interpreted within a model where leptoquarks appear as a coloured Goldsone multiplet of charges 2/3.A 95% CL upper limit of 0.30 pb is set on the pair production cross section of such leptoquarks, thus excluding masses between 7 and 20.5 GeV.
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- 1987
- Full Text
- View/download PDF
41. The three photon final state produced in $e^+ e^-$ collision at 3.6-GeV and at the $\psi'$
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Braunschweig, W., Martyn, H.-U., Gadermann, E., Hultschig, H., Joos, P., Koch, W., Kotz, U., Krehbiel, H., Kreinick, D., McNeely, W. A., Moffeit, K. C., Petersen, A., Sander, H. G., Rusch, R., Schliwa, M., Grindhammer, Guenter, Ludwig, J., Mess, K. H., Poelz, G., Ringel, J., Sauerberg, K., Schmueser, Peter, de Boer, W., Schmitz, D., Buschhorn, G., Gunderson, B., Kotthaus, R., Lierl, H., Oberlack, H., Pretzl, K., Orito, S., Suda, T., Totsuka, Y., Yamada, S., Sturm, W., DASP Collaboration, Wallraff, W., Berkelman, Karl, Cords, D., Felst, R., and Fries, R.
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PHOTON [FINAL STATE] ,QUANTUM ELECTRODYNAMICS ,3.7 GEV-CMS [3.6] ,FINAL STATE [PHOTON] ,BOUNDARY CONDITION [TOTAL CROSS SECTION] ,(3PHOTON) [FINAL STATE] ,EXPERIMENTAL RESULTS [DESY DORIS STOR] ,BRANCHING RATIO [PSI(3700)] ,ELECTROPRODUCTION [ETA(549)] ,+X%282830%29+PHOTON%22">PSI(3700) --> X(2830) PHOTON ,ETA(549) [ELECTROPRODUCTION] ,WIDTH [RADIATIVE DECAY] ,DESY DORIS STOR [EXPERIMENTAL RESULTS] ,ELECTROPRODUCTION [X(2830)] ,DASP [MAGNETIC DETECTOR] ,ddc:530 ,+X%282830%29+PHOTON%22">ELECTRON POSITRON --> X(2830) PHOTON ,COLLIDING BEAMS [ELECTRON POSITRON] ,+ETA%28549%29+PHOTON%22">ELECTRON POSITRON --> ETA(549) PHOTON ,ELECTRON POSITRON [COLLIDING BEAMS] ,RADIATIVE DECAY [PSI(3700)] ,RADIATIVE DECAY [WIDTH] ,ELECTRON POSITRON [ANNIHILATION] ,ELECTROPRODUCTION [PSI(3700)] ,BOUNDARY CONDITION [WIDTH] ,ANNIHILATION [ELECTRON POSITRON] ,PSI(3700) [ELECTROPRODUCTION] ,X(2830) [ELECTROPRODUCTION] - Abstract
The three photon final state produced in e + e − collisions at 3.6 GeV and at the mass of the ψ′ resonance has been measured using the nonmagnetic part of the double arm spectrometer DASP. A total of 31 events is observed outside the resonance region compared to 35.1 events predicted from QED. At the mass of the ψ′ 49 events are observed compared to 37.2 events expected from QED. Limits on radiative decays via intermediate states are given.
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- 1977
42. Separation of $\sigma_L$ and $\sigma_u$ in $\pi^+$ electroproduction above the resonance region
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Brauel, P., Canzler, T., Cords, D., Felst, R., Grindhammer, Guenter, Helm, M., Kollmann, W.-D., Krehbiel, H., and Schadlich, M.
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ELECTRON [FINAL STATE] ,TRANSVERSE [POLARIZATION] ,POLARIZATION: TRANSVERSE ,N: FINAL STATE ,FINAL STATE [N] ,ELECTROPRODUCTION [PI+] ,POLARIZATION [PHOTON] ,ELECTROPRODUCTION: PI+ ,PHOTON P: INTERACTION ,LONGITUDINAL [POLARIZATION] ,INTERACTION [PHOTON P] ,N [FINAL STATE] ,MAGNETIC SPECTROMETER: EXPERIMENTAL RESULTS ,FINAL STATE [PI+] ,ddc:530 ,ELECTRON P [INTERACTION] ,INTERACTION: ELECTRON P ,+N+PI%2B%22">PHOTON P --> N PI+ ,PI+: ELECTROPRODUCTION ,FINAL STATE: PI+ ,ELECTRON: FINAL STATE ,MAGNETIC SPECTROMETER [EXPERIMENTAL RESULTS] ,FINAL STATE [ELECTRON] ,PHOTON: POLARIZATION ,INTERACTION [ELECTRON P] ,+N+PI%2B+ELECTRON%22">ELECTRON P --> N PI+ ELECTRON ,INTERACTION: PHOTON P ,2.2 GEV: 0-0.28 (GEV)-SQUARED ,PI+ [FINAL STATE] ,DESY ES ,FINAL STATE: ELECTRON ,PHOTON [POLARIZATION] ,FINAL STATE: N ,0-0.28 (GEV)-SQUARED [2.2 GEV] ,PI+: FINAL STATE ,PHOTON P [INTERACTION] ,POLARIZATION: PHOTON ,PI+ [ELECTROPRODUCTION] ,ELECTRON P: INTERACTION ,EXPERIMENTAL RESULTS: MAGNETIC SPECTROMETER ,POLARIZATION: LONGITUDINAL ,EXPERIMENTAL RESULTS [MAGNETIC SPECTROMETER] - Abstract
(1977). doi:10.1016/0370-2693(77)90656-6, The four cross section components σ U , σ L , σ P and σ I were separated in the reaction γ V + p → π + + n at an electron four momentum transfer of Q 2 = 0.70 GeV 2 and an invariant hadronic mass of 2.19 GeV in the range of t between t min and −0.28 GeV 2 . The longitudinal cross section σ L dominates at small |t| and decreases rapidly with increasing |t|. The data are in rough agreement with the prediction of a generalized Born term model. The resulting value for the pion electromagnetic form factor is F π = 0.42 ± 0.015.
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- 1977
43. Inclusive hadron production by $\mathrm{e^+ e^-}$ annihilation for s between 13 and 25 $\mathrm{GeV^2}$
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Brandelik, R., Braunschweig, W., Gadermann, E., Hultschig, H., Joos, P., Koch, W., Kotz, U., Krehbiel, H., Kreinick, D., McNeely, W. A., Moffeit, K. C., Romer, O., Martyn, H.-U., Rusch, R., Wiik, B. H., Wolf, G., Grindhammer, Guenter, Ludwig, J., Mess, K. H., Petersen, A., Poelz, G., Ringel, J., Sauerberg, K., Sander, H. G., Schmueser, Peter, de Boer, W., Buschhorn, G., Gunderson, B., Kottkaus, R., Lierl, H., Oberlack, H., Schliwa, M., Orito, S., Suda, T., Schmitz, D., Totsuka, Y., Yamada, S., DASP Collaboration, Strum, W., Wallraff, W., Cords, D., Felst, R., and Fries, R.
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HADRON [ELECTROPRODUCTION] ,DESY DORIS STOR ,INCLUSIVE REACTION [DIFFERENTIAL CROSS SECTION] ,DASP [MAGNETIC SPECTROMETER] ,+CHARGED+HADRON+ANYTHING%22">ELECTRON POSITRON --> CHARGED HADRON ANYTHING ,COLLIDING BEAMS [ELECTRON POSITRON] ,DIFFERENTIAL CROSS SECTION [INCLUSIVE REACTION] ,ELECTRON POSITRON [COLLIDING BEAMS] ,INCLUSIVE REACTION [ELECTRON POSITRON] ,ELECTRON POSITRON [ANNIHILATION] ,ELECTROPRODUCTION [HADRON] ,CHARGED PARTICLE [HADRON] ,ANNIHILATION [ELECTRON POSITRON] ,ddc:530 ,SCALING ,EXPERIMENTAL RESULTS ,3.6-5.0 GEV-CMS - Abstract
Charged hadron production via e + e − → h ± X where h ± = π ± , K ± , p ̄ has been measured for s values between 13 and 25 GeV 2 . Inclusive cross sections and the evidence for scaling are presented.
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- 1977
44. On the origin of inclusive electron events in $e^+ e^-$ annihilation between 3.6-GeV and 5.2-GeV
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Brandelik, R., Braunschweig, W., Gadermann, E., Hultschig, H., Joos, P., Koch, W., Kotz, U., Krehbiel, H., Kreinick, D., Lynch, H. L., McNeely, W. A., Moffeit, K. C., Martyn, H.-U., Notz, D., Rusch, R., Schliwa, M., Wiik, B. H., Wolf, G., Grindhammer, Guenter, Ludwig, J., Mess, K. H., Petersen, A., Poelz, G., Sander, H. G., Ringel, J., Romer, O., Sauerberg, K., Schmueser, Peter, de Boer, W., Buschhorn, G., Fues, W., von Gagern, C., Gunderson, B., Kotthaus, R., Schmitz, D., Lierl, H., Oberlack, H., Orito, S., Suda, T., Totsuka, Y., Yamada, S., DASP Collaboration, Sturm, W., Wallraff, W., Cords, D., Felst, R., and Fries, R.
- Subjects
ELECTRON [FINAL STATE] ,K: MULTIPLE PRODUCTION ,+ELECTRON+ANYTHING%22">ELECTRON POSITRON --> ELECTRON ANYTHING ,MULTIPLE PRODUCTION: PI ,RATIO [MULTIPLE PRODUCTION] ,MULTIPLE PRODUCTION: K ,DASP [MAGNETIC DETECTOR] ,ddc:530 ,K [MULTIPLE PRODUCTION] ,COLLIDING BEAMS: ELECTRON POSITRON ,EXPERIMENTAL RESULTS ,ELECTRON: FINAL STATE ,FINAL STATE [ELECTRON] ,SEMILEPTONIC DECAY [CHARMED PARTICLE] ,DESY DORIS STOR ,3.6-5.2 GEV-CMS ,MULTIPLICITY [ELECTRON] ,MULTIPLE PRODUCTION [K] ,ELECTRON POSITRON: INCLUSIVE REACTION ,PI: MULTIPLE PRODUCTION ,COLLIDING BEAMS [ELECTRON POSITRON] ,ANNIHILATION: ELECTRON POSITRON ,ELECTRON POSITRON [COLLIDING BEAMS] ,INCLUSIVE REACTION [ELECTRON POSITRON] ,FINAL STATE: ELECTRON ,ELECTRON POSITRON: COLLIDING BEAMS ,CHARMED PARTICLE: SEMILEPTONIC DECAY ,MULTIPLE PRODUCTION: RATIO ,ELECTRON POSITRON [ANNIHILATION] ,PI [MULTIPLE PRODUCTION] ,ELECTRON: MULTIPLICITY ,ANNIHILATION [ELECTRON POSITRON] ,MULTIPLE PRODUCTION [PI] ,High Energy Physics::Experiment ,MAGNETIC DETECTOR: DASP ,ELECTRON POSITRON: ANNIHILATION - Abstract
(1977). doi:10.1016/0370-2693(77)90360-4, The multiplicity distribution of inclusive electron events above 4 GeV cm energy shows two distinct classes of events: two prong no photon and high multiplicity events. If the high multiplicity events are attributed to the semi-leptonic decay of charmed particles the two prong no photon events must come from the weak decay of a different type of particle. The charged K to π ratio was measured for these events. The average number of charged kaons is 0.07 ± 0.06 per two prong event and 0.90 ± 0.18 per multiprong event. Thus the weak current responsible for the low multiplicity events has a small coupling to strange particles.
- Published
- 1977
45. Radiative decays of the J/$\psi$ and evidence for a new heavy resonance
- Author
-
Braunschweig, W., Martyn, H.-U., Hultschig, H., Joos, P., Koch, W., Kotz, U., Krehbiel, H., Kreinick, D., McNeely, W. A., Moffeit, K. C., Petersen, A., Schliwa, M., Sander, H. G., Wiik, B. H., Wolf, G., Grindhammer, Guenter, Ludwig, J., Mess, K. H., Poelz, G., Ringel, J., Sauerberg, K., Schmueser, Peter, de Boer, W., Schmitz, Daniel, Buschhorn, G., Gunderson, B., Kotthaus, R., Lierl, H., Oberlack, H., Pretzl, K., Orito, S., Suda, T., Totsuka, Y., Yamada, S., Sturm, W., DASP Collaboration, Wallraff, W., Berkelman, Karl, Cords, D., Felst, R., and Gadermann, E.
- Subjects
RADIATIVE DECAY: WIDTH ,J/PSI(3100): ELECTROPRODUCTION ,ELECTROPRODUCTION [J/PSI(3100)] ,FINAL STATE [PHOTON] ,ETA(549) ,(3PHOTON) [FINAL STATE] ,J/PSI(3100): BRANCHING RATIO ,FINAL STATE [PI0] ,EXPERIMENTAL RESULTS [DESY DORIS STOR] ,EXPERIMENTAL RESULTS: DESY DORIS STOR ,+X%282830%29+PHOTON%22">J/PSI(3100) --> X(2830) PHOTON ,WIDTH: RADIATIVE DECAY ,BRANCHING RATIO [J/PSI(3100)] ,+3PHOTON%22">J/PSI(3100) --> 3PHOTON ,+ETA%28958%29+PHOTON%22">J/PSI(3100) --> ETA(958) PHOTON ,+PI0+PHOTON%22">J/PSI(3100) --> PI0 PHOTON ,PI0 [FINAL STATE] ,COLLIDING BEAMS [ELECTRON POSITRON] ,FINAL STATE: (3PHOTON) ,RADIATIVE DECAY [J/PSI(3100)] ,ANNIHILATION: ELECTRON POSITRON ,ELECTROPRODUCTION: J/PSI(3100) ,ETA(958) ,ELECTRON POSITRON: COLLIDING BEAMS ,ELECTRON POSITRON [ANNIHILATION] ,+ETA%28549%29+PHOTON%22">J/PSI(3100) --> ETA(549) PHOTON ,ANNIHILATION [ELECTRON POSITRON] ,PI0: FINAL STATE ,J/PSI(3100) [ELECTROPRODUCTION] ,X(2830) ,J/PSI(3100): RADIATIVE DECAY ,MAGNETIC SPECTROMETER: DASP ,FINAL STATE: PI0 ,PHOTON [FINAL STATE] ,PHOTON: FINAL STATE ,WIDTH [RADIATIVE DECAY] ,DESY DORIS STOR [EXPERIMENTAL RESULTS] ,ddc:530 ,DESY DORIS STOR: EXPERIMENTAL RESULTS ,COLLIDING BEAMS: ELECTRON POSITRON ,3.1 GEV-CMS ,FINAL STATE: PHOTON ,DASP [MAGNETIC SPECTROMETER] ,ELECTRON POSITRON [COLLIDING BEAMS] ,RADIATIVE DECAY [WIDTH] ,High Energy Physics::Experiment ,ELECTRON POSITRON: ANNIHILATION - Abstract
(1977). doi:10.1016/0370-2693(77)90114-9, The three photon final state produced in e + e − collisions has been measured at the mass of the J ψ resonance using the nonmagnetic part of the double arm spectrometer DASP. The decays J ψ → ηγ, η'γ and π o γ were observed and their branching ratios are given. A four standard deviation signal was observed in the γγ mass spectrum at a mass of (2.83 ± 0.03) GeV. An upper limit is given for the direct decay J ψ → 3γ .
- Published
- 1977
46. Evidence for the F meson
- Author
-
Brandelik, R., Braunschweig, W., Gadermann, E., Hultschig, H., Joos, P., Koch, W., Kotz, U., Krehbiel, H., Kreinick, D., Lynch, H. L., McNeely, W. A., Mikenberg, G., Martyn, H.-U., Moffeit, K. C., Notz, D., Rusch, R., Schliwa, M., Shapira, A., Wiik, B. H., Wolf, G., Grindhammer, Guenter, Ludwig, J., Mess, K. H., Sander, H. G., Petersen, A., Poelz, G., Ringel, J., Romer, O., Sauerberg, K., Schmueser, Peter, de Boer, W., Buschhorn, G., Fues, W., von Gagern, C., Schmitz, D., Gunderson, B., Kotthaus, R., Lierl, H., Oberlack, H., Orito, S., Suda, T., Totsuka, Y., Yamada, S., DASP Collaboration, Sturm, W., Wallraff, W., Cords, D., Felst, R., and Fries, R.
- Subjects
PRODUCTION: PHOTON ,MASS: F*(2140) ,F- [POSTULATED PARTICLE] ,PRODUCTION [ETA(549)] ,PRODUCTION: ETA(549) ,+F+PHOTON%22">F*(2140) --> F PHOTON ,ASSOCIATED PRODUCTION [CHARMED MESON] ,(ETA(549) PI-) [MASS SPECTRUM] ,F: MASS ,ETA(549) [PRODUCTION] ,F*(2140) [POSTULATED PARTICLE] ,CHARMED MESON: ELECTROPRODUCTION ,MASS [F*(2140)] ,MASS SPECTRUM: (ETA(549) PI-) ,+F*%282140%29+F%22">ELECTRON POSITRON --> F*(2140) F ,(ETA(549) PI-): MASS SPECTRUM ,ELECTRON POSITRON: INCLUSIVE REACTION ,COLLIDING BEAMS [ELECTRON POSITRON] ,PRODUCTION [PHOTON] ,POSTULATED PARTICLE: F ,+2F*%282140%29%22">ELECTRON POSITRON --> 2F*(2140) ,ANNIHILATION: ELECTRON POSITRON ,ELECTROPRODUCTION [CHARMED MESON] ,ELECTRON POSITRON: COLLIDING BEAMS ,F+ [POSTULATED PARTICLE] ,ELECTRON POSITRON [ANNIHILATION] ,ANNIHILATION [ELECTRON POSITRON] ,MASS: F ,F*(2140): MASS ,F [MASS] ,CHARMED MESON [ASSOCIATED PRODUCTION] ,MASS SPECTRUM: TWO-PHOTON ,TWO-PHOTON: MASS SPECTRUM ,CHARMED MESON: ASSOCIATED PRODUCTION ,(ETA(549) PI+): MASS SPECTRUM ,+ETA%28549%29+PI%22">F --> ETA(549) PI ,4.0-5.2 GEV-CMS ,PHOTON: PRODUCTION ,POSTULATED PARTICLE: F+ ,MASS SPECTRUM [TWO-PHOTON] ,DASP [MAGNETIC DETECTOR] ,ddc:530 ,ETA(549): PRODUCTION ,F*(2140) [MASS] ,COLLIDING BEAMS: ELECTRON POSITRON ,EXPERIMENTAL RESULTS ,CHARMED MESON [ELECTROPRODUCTION] ,DESY DORIS STOR ,MASS SPECTRUM: (ETA(549) PI+) ,MASS SPECTRUM [(ETA(549) PI-)] ,ELECTROPRODUCTION: CHARMED MESON ,POSTULATED PARTICLE: F*(2140) ,MASS SPECTRUM [(ETA(549) PI+)] ,MASS [F] ,ELECTRON POSITRON [COLLIDING BEAMS] ,INCLUSIVE REACTION [ELECTRON POSITRON] ,(ETA(549) PI+) [MASS SPECTRUM] ,ASSOCIATED PRODUCTION: CHARMED MESON ,PHOTON [PRODUCTION] ,TWO-PHOTON [MASS SPECTRUM] ,MAGNETIC DETECTOR: DASP ,ELECTRON POSITRON: ANNIHILATION - Abstract
(1977). doi:10.1016/0370-2693(77)90361-6, Inclusive η production by e + e − annihilation for cm energies between 4 and 5.2 GeV was studied. A strong η signal was observed at 4.4 GeV, produced predominantly in conjunction with a low energy photon suggestive of F F ∗ or F ∗ F ∗ production. From events containing a π ± , and η, and a low energy photon the F and F ∗ masses were found to be 2.03 ± 0.06 and 2.14 ± 0.06 GeV, respectively.
- Published
- 1977
47. A STUDY OF FINAL STATES WITH FOUR CHARGED LEPTONS IN e+ e- INTERACTIONS
- Author
-
Behrend, H. J., Burger, J., Criegee, L., Fenner, H., Franke, G., Meyer, J., Schroder, V., Sindt, H., Timm, U., Winter, G. G., Zimmermann, W., Bussey, P. J., Campbell, A. J., Dainton, J. B., Hendry, D., McCurrach, G., Scarr, J. M., Skillicorn, I. O., Smith, K. M., Paasch, K., Poppe, M., Spitzer, H., Apel, W. D., Engler, J., Flugge, G., Forstbauer, B., Fries, D. C., Fues, W., Gamerdinger, K., Grosse-Wiesmann, P., Henkes, T., Hopp, G., Jung, H., Knapp, J., Kruger, M., Kuster, H., Muller, H., Ranitzsch, K. H., Schneider, H., de Boer, W., Buschhorn, G., Christiansen, W., Fatah, B., Grindhammer, Guenter, Gunderson, B., Kiesling, Christian M., Kotthaus, R., Kroha, H., Luers, D., Oberlack, H., Schacht, P., Wiedemann, W., Bonneaud, G., Cordier, A., Davier, M., Fournier, D., Gaillard, M., Grivaz, J. F., Haissinski, J., Journe, V., Le Diberder, F., Mallik, U., Ros, E., Veillet, J. J., Field, J. H., George, R., Goldberg, M., Hamon, O., Kapusta, Frederic, Kovacs, F., Pain, R., Poggioli, L., Rivoal, M., D'Agostini, G., Gaspero, Mario, Stella, B., Aleksan, R., Bouchez, J., Cozzika, G., Ducros, Y., Gaidot, A., Jarry, P., Lavagne, Y., Ould Saada, F., Pamela, J., Pansart, J. P., Pierre, F., Alexander, G., Bella, G., Gnat, Y., Grunhaus, J., and CELLO Collaboration
- Subjects
MUON [ELECTROPRODUCTION] ,ELECTROPRODUCTION: MUON ,TAU: ELECTROPRODUCTION ,TAU [ELECTROPRODUCTION] ,DESY PETRA STOR ,MASS: DILEPTON ,DILEPTON [MASS] ,ELECTROPRODUCTION: ELECTRON ,FINAL STATE [(4LEPTON)] ,ELECTROPRODUCTION [ELECTRON] ,QUANTUM ELECTRODYNAMICS: VALIDITY TEST ,ELECTROPRODUCTION [MUON] ,MUON: ELECTROPRODUCTION ,ELECTROPRODUCTION: TAU ,COLLIDING BEAMS: ELECTRON POSITRON ,ELECTROPRODUCTION [TAU] ,EXPERIMENTAL RESULTS ,ELECTRON [ELECTROPRODUCTION] ,DILEPTON: MASS ,22: 34 GEV-CMS [14] ,(4LEPTON): FINAL STATE ,(4LEPTON) [FINAL STATE] ,ELECTRON POSITRON: EXCLUSIVE REACTION ,COLLIDING BEAMS [ELECTRON POSITRON] ,VALIDITY TEST [QUANTUM ELECTRODYNAMICS] ,MASS [DILEPTON] ,ELECTRON POSITRON [COLLIDING BEAMS] ,ELECTRON POSITRON: COLLIDING BEAMS ,FINAL STATE: (4LEPTON) ,ELECTRON: ELECTROPRODUCTION ,14: 22: 34 GEV-CMS ,EXCLUSIVE REACTION [ELECTRON POSITRON] ,CELLO - Abstract
18 pp. (1984).
- Published
- 1984
48. SEARCH FOR NARROW QUARKONIUM STATES AND PAIR PRODUCTION OF NEW HEAVY QUARKS AT c.m. ENERGIES FROM 33-GeV TO 36.7-GeV
- Author
-
Behrend, H. J., Chen, Ch., Fries, D. C., Flugge, G., Hopp, G., Muller, H., Randoll, H., Schmidt, G., Schneider, H., de Boer, W., Buschhorn, G., Grindhammer, Guenter, Field, J. H., Grosse-Wiesmann, P., Gunderson, B., Kiesling, Christian M., Kotthaus, R., Kruse, U., Lierl, H., Luers, D., Meyer, T., Moss, L., Oberlack, H., Gumpel, U., Schacht, P., Schachter, M. J., Snyder, A., Steiner, H., Carnesecchi, G., Cordier, A., Davier, M., Fournier, D., Grivaz, J. F., Haissinski, J., Schroder, V., Journe, V., Klarsfeld, A., Laplanche, F., Le Diberder, F., Mallik, U., Veillet, J. J., Weitsch, A., George, R., Goldberg, M., Grossetete, B., Sindt, H., Kapusta, Frederic, Kovacs, F., London, G., Poggioli, L., Rivoal, M., Aleksan, R., Bouchez, J., Cozzika, G., Ducros, Y., Gaidot, A., Apel, W. D., Jadach, S., Lavagne, Y., Pamela, J., Pansart, J. P., Pierre, F., CELLO Collaboration, Bodenkamp, J., Chrobaczek, D., and Engler, J.
- Subjects
MULTIPLE PRODUCTION [HADRON] ,RATIO: TOTAL CROSS SECTION ,DESY PETRA STOR ,TOTAL CROSS SECTION [RATIO] ,TRUTHONIUM [SEARCH FOR] ,HADRON: ELECTROPRODUCTION ,MULTIPLE PRODUCTION: HADRON ,QUARK: TRUTHONIUM ,ELECTROPRODUCTION [HADRON] ,TOTAL CROSS SECTION [ENERGY DEPENDENCE] ,TRUTHONIUM [QUARK] ,ENERGY DEPENDENCE: TOTAL CROSS SECTION ,ELECTROPRODUCTION: HADRON ,TOTAL CROSS SECTION: RATIO ,COLLIDING BEAMS: ELECTRON POSITRON ,EXPERIMENTAL RESULTS ,ENERGY DEPENDENCE [TOTAL CROSS SECTION] ,TOTAL CROSS SECTION: ENERGY DEPENDENCE ,HADRON [ELECTROPRODUCTION] ,SEARCH FOR: TRUTHONIUM ,COLLIDING BEAMS [ELECTRON POSITRON] ,HADRON [MULTIPLE PRODUCTION] ,HADRON: MULTIPLE PRODUCTION ,ANNIHILATION: ELECTRON POSITRON ,ELECTRON POSITRON [COLLIDING BEAMS] ,JET: SPHERICITY ,RATIO [TOTAL CROSS SECTION] ,SPHERICITY [JET] ,ELECTRON POSITRON: COLLIDING BEAMS ,ELECTRON POSITRON [ANNIHILATION] ,ANNIHILATION [ELECTRON POSITRON] ,CELLO ,33.0-36.7 GEV-CMS ,ELECTRON POSITRON: ANNIHILATION - Abstract
13 pp. (1981).
- Published
- 1981
- Full Text
- View/download PDF
49. Proposal to upgrade the Cello Detector
- Author
-
Behrend, H. J., Burger, J., Winter, G. g., Zimmermann, W., Bussey, P. j., Dainton, J. b., Hendry, D., Raine, C., Scarr, J. m., Skillicorn, I. o., Smith, K. m., Blobel, V., Criegee, L., Burkart, D., Poppe, M., Spitzer, H., Achterberg, O., D'Agostini, G., Apel, W. d., Engler, J., Flugge, G., Fries, D. c., Fues, W., Franke, G., Hopp, G., Kruger, M., Muller, H., Randoll, H., Schmidt, G., Schneider, H., De Boer, W., Buschhorn, G., Grindhammer, Guenter, Grosse-Wiesmann, P., Gaspero, Mario, Gunderson, B., Kiesling, Christian M., Kovacs, F., Poggioli, L., Rivoal, M., Aleksan, R., Kotthaus, R., Lierl, H., Luers, D., Oberlack, H., Meyer, J., Schacht, P., Alexander, G., Bella, G., Gnat, Y., Grunhaus, J., Fournier, D., Grivaz, J. f., Haissinski, J., Journe, V., Bonneaud, G., Schroder, V., Cordier, A., Davier, M., Jarry, P., Lavagne, Y., Pamela, J., Pansart, J. p., Pierre, F., Bouchez, J., Carnesecchi, G., Cozzika, G., Sindt, H., Ducros, Y., Gaidot, A., Le Diberder, F., Mallik, U., Veillet, J. j., Field, J. h., George, R., Goldberg, M., Hamon, O., Kapusta, Frederic, Stella, B., CELLO Collaboration, and Timm, U.
- Subjects
VALIDITY TEST [QUANTUM CHROMODYNAMICS] ,PROPOSED [EXPERIMENTAL EQUIPMENT] ,MODEL: PARTON ,DESY PETRA STOR ,QUARK: TRUTHONIUM ,TABLES ,TRUTHONIUM [QUARK] ,SCINTILLATION COUNTER: LEAD-GLASS ,NUMERICAL CALCULATIONS ,PARTICLE IDENTIFICATION [CHARGED PARTICLE] ,TRIGGER ,INELASTIC SCATTERING: ELECTRON POSITRON ,TWO-PHOTON: EXCHANGE ,EXCHANGE [TWO-PHOTON] ,EFFECT: ELECTROWEAK INTERACTION ,SHOWERS: ELECTROMAGNETIC ,ELECTROWEAK INTERACTION [EFFECT] ,COLLIDING BEAMS [ELECTRON POSITRON] ,INELASTIC SCATTERING [ELECTRON POSITRON] ,ANNIHILATION: ELECTRON POSITRON ,ELECTRON POSITRON: COLLIDING BEAMS ,ELECTRON POSITRON [ANNIHILATION] ,ELECTROWEAK INTERACTION: EFFECT ,QUANTUM CHROMODYNAMICS: VALIDITY TEST ,ANNIHILATION [ELECTRON POSITRON] ,QUARK [PAIR PRODUCTION] ,SHOWERS: ENERGY ,QUARK: PAIR PRODUCTION ,ELECTRON POSITRON [INELASTIC SCATTERING] ,PAIR PRODUCTION [QUARK] ,EXPERIMENTAL EQUIPMENT: PROPOSED ,SHOWER DETECTOR ,ELECTRON POSITRON: INELASTIC SCATTERING ,DRIFT CHAMBER ,REVIEW ,ELECTROMAGNETIC [SHOWERS] ,STRUCTURE FUNCTION [PHOTON] ,COLLIDING BEAMS: ELECTRON POSITRON ,TWO-PHOTON [EXCHANGE] ,CHARGED PARTICLE: PARTICLE IDENTIFICATION ,ENERGY [SHOWERS] ,EFFECT [ELECTROWEAK INTERACTION] ,PAIR PRODUCTION: QUARK ,ELECTRON POSITRON [COLLIDING BEAMS] ,PROPOSED EXPERIMENT ,EXCHANGE: TWO-PHOTON ,DATA ACQUISITION ,CELLO ,TRACK DATA ANALYSIS ,PARTON [MODEL] ,PHOTON: STRUCTURE FUNCTION ,ELECTRON POSITRON: ANNIHILATION ,COSTS ,LEAD-GLASS [SCINTILLATION COUNTER] - Abstract
61 pp. (1983).
- Published
- 1983
- Full Text
- View/download PDF
50. A STUDY OF FINAL STATES WITH FOUR CHARGED LEPTONS IN e+ e- INTERACTIONS
- Author
-
Behrend, H. J., Burger, J., Criegee, L., Fenner, H., Franke, G., Meyer, J., Schroder, V., Sindt, H., Timm, U., Winter, G. G., Zimmermann, W., Bussey, P. J., Campbell, A. J., Dainton, J. B., Hendry, D., Mccurrach, G., Scarr, J. M., Skillicorn, I. O., Smith, K. M., Paasch, K., Poppe, M., Spitzer, H., Apel, W. D., Engler, J., Flugge, G., Forstbauer, B., Fries, D. C., Fues, W., Gamerdinger, K., Grosse-Wiesmann, P., Henkes, T., Hopp, G., Hannes Jung, Knapp, J., Kruger, M., Kuster, H., Muller, H., Ranitzsch, K. H., Schneider, H., Boer, W., Buschhorn, G., Christiansen, W., Fatah, B., Grindhammer, Guenter, Gunderson, B., Kiesling, Christian M., Kotthaus, R., Kroha, H., Luers, D., Oberlack, H., Schacht, P., Wiedemann, W., Bonneaud, G., Cordier, A., Davier, M., Fournier, D., Gaillard, M., Grivaz, J. F., Haissinski, J., Journe, V., Le Diberder, F., Mallik, U., Ros, E., Veillet, J. J., Field, J. H., George, R., Goldberg, M., Hamon, O., Kapusta, Frederic, Kovacs, F., Pain, R., Poggioli, L., Rivoal, M., D Agostini, G., Gaspero, Mario, Stella, B., Aleksan, R., Bouchez, J., Cozzika, G., Ducros, Y., Gaidot, A., Jarry, P., Lavagne, Y., Ould Saada, F., Pamela, J., Pansart, J. P., Pierre, F., Alexander, G., Bella, G., Gnat, Y., and Grunhaus, J.
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