https://doi.org/10.1140/epjc/s10052-013-2421-y
Regular Article - Experimental Physics
Measurement of the forward energy flow in pp collisions at
1
CERN, 1211, Geneva 23, Switzerland
2
Centro Brasileiro de Pesquisas Físicas (CBPF), Rio de Janeiro, Brazil
3
Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
4
Center for High Energy Physics, Tsinghua University, Beijing, China
5
LAPP, Université de Savoie, CNRS/IN2P3, Annecy-Le-Vieux, France
6
CNRS/IN2P3, LPC, Clermont Université, Université Blaise Pascal, Clermont-Ferrand, France
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CPPM, Aix-Marseille Université, CNRS/IN2P3, Marseille, France
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LAL, Université Paris-Sud, CNRS/IN2P3, Orsay, France
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LPNHE, Université Pierre et Marie Curie, Université Paris Diderot, CNRS/IN2P3, Paris, France
10
Fakultät Physik, Technische Universität Dortmund, Dortmund, Germany
11
Max-Planck-Institut für Kernphysik (MPIK), Heidelberg, Germany
12
Physikalisches Institut, Ruprecht-Karls-Universität Heidelberg, Heidelberg, Germany
13
School of Physics, University College Dublin, Dublin, Ireland
14
Sezione INFN di Bari, Bari, Italy
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Sezione INFN di Bologna, Bologna, Italy
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Sezione INFN di Cagliari, Cagliari, Italy
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Sezione INFN di Ferrara, Ferrara, Italy
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Sezione INFN di Firenze, Firenze, Italy
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Laboratori Nazionali dell’INFN di Frascati, Frascati, Italy
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Sezione INFN di Genova, Genova, Italy
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Sezione INFN di Milano Bicocca, Milano, Italy
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Sezione INFN di Roma Tor Vergata, Roma, Italy
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Sezione INFN di Roma La Sapienza, Roma, Italy
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Henryk Niewodniczanski Institute of Nuclear Physics Polish Academy of Sciences, Kraków, Poland
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Faculty of Physics and Applied Computer Science, AGH - University of Science and Technology, Kraków, Poland
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National Center for Nuclear Research (NCBJ), Warsaw, Poland
27
Horia Hulubei National Institute of Physics and Nuclear Engineering, Bucharest-Magurele, Romania
28
Petersburg Nuclear Physics Institute (PNPI), Gatchina, Russia
29
Institute of Theoretical and Experimental Physics (ITEP), Moscow, Russia
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Institute of Nuclear Physics, Moscow State University (SINP MSU), Moscow, Russia
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Institute for Nuclear Research of the Russian Academy of Sciences (INR RAN), Moscow, Russia
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Budker Institute of Nuclear Physics (SB RAS) and Novosibirsk State University, Novosibirsk, Russia
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Institute for High Energy Physics (IHEP), Protvino, Russia
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Universitat de Barcelona, Barcelona, Spain
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Universidad de Santiago de Compostela, Santiago de Compostela, Spain
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European Organization for Nuclear Research (CERN), Geneva, Switzerland
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Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland
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Physik-Institut, Universität Zürich, Zürich, Switzerland
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Nikhef National Institute for Subatomic Physics, Amsterdam, The Netherlands
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Nikhef National Institute for Subatomic Physics and VU University Amsterdam, Amsterdam, The Netherlands
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NSC Kharkiv Institute of Physics and Technology (NSC KIPT), Kharkiv, Ukraine
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Institute for Nuclear Research of the National Academy of Sciences (KINR), Kyiv, Ukraine
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University of Birmingham, Birmingham, United Kingdom
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H.H. Wills Physics Laboratory, University of Bristol, Bristol, United Kingdom
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Cavendish Laboratory, University of Cambridge, Cambridge, United Kingdom
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Department of Physics, University of Warwick, Coventry, United Kingdom
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STFC Rutherford Appleton Laboratory, Didcot, United Kingdom
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School of Physics and Astronomy, University of Edinburgh, Edinburgh, United Kingdom
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School of Physics and Astronomy, University of Glasgow, Glasgow, United Kingdom
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Oliver Lodge Laboratory, University of Liverpool, Liverpool, United Kingdom
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Imperial College London, London, United Kingdom
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School of Physics and Astronomy, University of Manchester, Manchester, United Kingdom
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Department of Physics, University of Oxford, Oxford, United Kingdom
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Syracuse University, Syracuse, NY, USA
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Pontifícia Universidade Católica do Rio de Janeiro (PUC-Rio), Rio de Janeiro, Brazil
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Institut für Physik, Universität Rostock, Rostock, Germany
* e-mail: dmytro.volyanskyy@cern.ch
Received:
21
December
2012
Revised:
22
March
2013
Published online:
17
May
2013
The energy flow created in pp collisions at is studied within the pseudorapidity range 1.9<η<4.9 with data collected by the LHCb experiment. The measurements are performed for inclusive minimum-bias interactions, hard scattering processes and events with an enhanced or suppressed diffractive contribution. The results are compared to predictions given by Pythia-based and cosmic-ray event generators, which provide different models of soft hadronic interactions.
© Springer-Verlag Berlin Heidelberg and Società Italiana di Fisica, 2013