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1. Luminosity-independent measurements of total, elastic and inelastic cross-sections at \chem{\sqrt {s} = 7\,TeV}

Author

J. Whitmore, M. Calicchio, H. Niewiadomski, M. Macrí, P. Palazzi, C. Taylor, J. Kopal, F. Oljemark, E. Lippmaa, Francisco Garcia, G. Ruggiero, A. Scribano, J. Procházka, Milos Lokajicek, J. Kaspar, M. Lo Vetere, T. Maki, R. Lauhakangas, F. Cafagna, R. A. Intonti, E. Radermacher, R. Ferretti, L. Ropelewski, F. Nemes, V. Avati, Eraldo Oliveri, Edoardo Bossini, M. Quinto, Federico Ravotti, M. Bozzo, M. Oriunno, A. Santroni, Erik Brücken, E. Robutti, Mate Csanad, A. Fiergolski, K. Kurvinen, G. Antchev, Mario Deile, M. Doubek, V. Kundrát, J. Welti, T. Hilden, S. Minutoli, V. K. Eremin, Paolo Brogi, L. Grzanka, W. Snoeys, F. Lucas Rodríguez, Tamas Ferenc Csorgo, Fabrizio Ferro, N. Turini, N. Minafra, J. Smajek, J. Heino, V. Greco, P. Aspell, S. Giani, Giuseppe Latino, P. Wyszkowski, I. Atanassov, Corbin Covault, V. Vacek, J. Baechler, V. Berardi, T. Leszko, M. Berretti, S. Lami, E. Radicioni, K. Osterberg, M. Vitek, M. G. Catanesi, K. Eggert, A. Mercadante, J. Sziklai, Heimo Saarikko, A. Buzzo, and R. Orava

Subjects
Physics, Particle physics, Large Hadron Collider, Luminosity (scattering theory), 010308 nuclear & particles physics, Detector, Roman pot, General Physics and Astronomy, Optical theorem, Beam optics, 7. Clean energy, 01 natural sciences, Nuclear physics, 0103 physical sciences, Range (statistics), High Energy Physics::Experiment, 010306 general physics, Particle Physics - Experiment, Beam (structure)
Abstract

The TOTEM experiment at the LHC has performed the first luminosity-independent determination of the total proton-proton cross-section at $\sqrt {s} = 7\,{\mathrm { TeV}}$ . This technique is based on the optical theorem and requires simultaneous measurements of the inelastic rate – accomplished with the forward charged-particle telescopes T1 and T2 in the range 3.1

Published
2013
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2. First measurement of the total proton-proton cross-section at the LHC energy of \chem{\sqrt{s} = 7\,TeV}

Author

M. R. Intonti, Georgy Antchev, E. Lippmaa, M. Quinto, G. Sanguinetti, Eraldo Oliveri, A. Fiergolski, J. Procházka, N. Turini, E. Radermacher, P. Palazzi, M. Lo Vetere, J. Welti, K. Eggert, A. Santroni, Mario Deile, M. G. Catanesi, G. Ruggiero, H. Saarikko, J. Kopal, R. Lauhakangas, Vincenzo Berardi, R. Ferretti, Kenneth Osterberg, L. Ropelewski, Federico Ravotti, E. Bossini, M. Oriunno, I. Atanassov, Paolo Brogi, Leszek Grzanka, Corbin Covault, V. Avati, Joachim Baechler, V. Greco, E. Radicioni, W. Snoeys, T. Leszko, J. Heino, S. Lami, S. Gianì, K. Kurvinen, Tamas Ferenc Csorgo, F. Oljemark, Mirko Berretti, M. M. Macri, A. Scribano, M. Calicchio, L. Magaletti, M. Bozzo, Enrico Robutti, Erik Brücken, J. Kaspar, J. J. Whitmore, Giuseppe Latino, H. Niewiadomski, F. S. Cafagna, Francisco Garcia, Milos Lokajicek, V. K. Eremin, Frigyes Nemes, R. Orava, T. Hilden, Fabrizio Ferro, V. Kundrát, Vaclav Vacek, S. Minutoli, F. Lucas Rodríguez, A. Mercadante, P. Aspell, J. Sziklai, A. Buzzo, M. Vitek, and C. Taylor

Subjects
Elastic scattering, Physics, Particle physics, Luminosity (scattering theory), Large Hadron Collider, Proton, Scattering, Extrapolation, FOS: Physical sciences, LHC, Totem, pp total cross section, General Physics and Astronomy, Optical theorem, High Energy Physics - Experiment, High Energy Physics - Experiment (hep-ex), Particle Physics - Experiment, Energy (signal processing)
Abstract

TOTEM has measured the differential cross-section for elastic proton-proton scattering at the LHC energy of {\srud}s = 7TeV analysing data from a short run with dedicated large {\beta} * optics. A single exponential fit with a slope B = (20:1{\pm}0:2stat {\pm}0:3syst)GeV-2 describes the range of the four-momentum transfer squared |t| from 0.02 to 0.33 GeV2. After the extrapolation to |t| = 0, a total elastic scattering cross-section of (24:8{\pm}0:2stat {\pm}1:2syst) mb was obtained. Applying the optical theorem and using the luminosity measurement from CMS, a total proton-proton cross-section of (98:3{\pm}0:2stat {\pm}2:8syst) mb was deduced which is in good agreement with the expectation from the overall fit of previously measured data over a large range of center-of-mass energies. From the total and elastic pp cross-section measurements, an inelastic pp cross-section of (73:5{\pm}0:6stat +1:8 -1:3 syst) mb was inferred. PACS 13.60.Hb: Total and inclusive cross sections, Comment: 11 pages 5 figures CERN PH Prerpint

Published
2011
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3. A Measurement of the Total Charm Cross Section in 200 and 360 GeV/c pN Interactions Using a Holographic Bubble Chamber

Author

M. Boratav, K. Geissler, F.F. Heymann, R. Roosen, D. Geiregat, Peter R Hobson, J L Bailly, B.G. Duff, N.G. Minaev, J. F. Baland, J. H. Bartley, A M Touchard, E Johansson, O. R. Williams, G Neuhofer, Salvatore Nuzzo, M. J. Esten, G.J. Lush, R. Arnold, Anton Taurok, Paul Lecoq, F. Ruggieri, H. Drevermann, M. Calicchio, Stefaan Tavernier, F. Grard, M. T. Muciaccia, R. Cranfield, M. Barth, G. Maurer, V. P. Henri, Alain Hervé, J Kesteman, I. Gjerpe, Josef Hrubec, S. Natali, M. Coupland, H. Cobbaert, O. Erriquez, M C Touboul, D.C. Imrie, P. Olivier, F. W. Bullock, Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Institut de Recherches Subatomiques (IReS), and Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Cancéropôle du Grand Est-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS)

Subjects
Physics, Particle physics, 010308 nuclear & particles physics, Topological information, Holography, Condensed Matter Physics, 01 natural sciences, Atomic and Molecular Physics, and Optics, law.invention, Nuclear physics, Cross section (physics), Pair production, law, 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Bubble chamber, High Energy Physics::Experiment, Atomic number, Charm (quantum number), Liquid bubble, Nuclear Experiment, 010306 general physics, Particle Physics - Experiment, Mathematical Physics
Abstract

We present results from the first holographic bubble chamber experiment. Using topological information on the events observed in the heavy liquid bubble chamber HOBC, we have determined a total charm pair production cross section of (24.6-8.3+12.0) μb and (3.9-1.9+2.5) μb in 360 GeV/c and 200 GeV/c proton-nucleon interactions respectively. For these estimates we assumed a linear dependence of the charm cross section on the atomic number A.

Published
1986
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