https://doi.org/10.1140/epjc/s10052-013-2406-x
Regular Article - Experimental Physics
Measurement of charged particle spectra in deep-inelastic ep scattering at HERA
1
I. Physikalisches Institut der RWTH, Aachen, Germany
2
Vinca Institute of Nuclear Sciences, University of Belgrade, 1100, Belgrade, Serbia
3
School of Physics and Astronomy, University of Birmingham, Birmingham, UK
4
Inter-University Institute for High Energies ULB-VUB, Brussels and Universiteit Antwerpen, Antwerpen, Belgium
5
National Institute for Physics and Nuclear Engineering (NIPNE), Bucharest, Romania
6
STFC, Rutherford Appleton Laboratory, Didcot, Oxfordshire, UK
7
Institute for Nuclear Physics, Cracow, Poland
8
Institut für Physik, TU Dortmund, Dortmund, Germany
9
Joint Institute for Nuclear Research, Dubna, Russia
10
CEA, DSM/Irfu, CE-Saclay, Gif-sur-Yvette, France
11
DESY, Hamburg, Germany
12
Institut für Experimentalphysik, Universität Hamburg, Hamburg, Germany
13
Max-Planck-Institut für Kernphysik, Heidelberg, Germany
14
Physikalisches Institut, Universität Heidelberg, Heidelberg, Germany
15
Kirchhoff-Institut für Physik, Universität Heidelberg, Heidelberg, Germany
16
Institute of Experimental Physics, Slovak Academy of Sciences, Košice, Slovak Republic
17
Department of Physics, University of Lancaster, Lancaster, UK
18
Department of Physics, University of Liverpool, Liverpool, UK
19
School of Physics and Astronomy, Queen Mary, University of London, London, UK
20
Physics Department, University of Lund, Lund, Sweden
21
CPPM, Aix-Marseille Univ, CNRS/IN2P3, 13288, Marseille, France
22
Departamento de Fisica Aplicada, CINVESTAV, Mérida, Yucatán, México
23
Departamento de Fisica, CINVESTAV IPN, México City, México
24
Institute for Theoretical and Experimental Physics, Moscow, Russia
25
Lebedev Physical Institute, Moscow, Russia
26
Max-Planck-Institut für Physik, München, Germany
27
LAL, Université Paris-Sud, CNRS/IN2P3, Orsay, France
28
LLR, Ecole Polytechnique, CNRS/IN2P3, Palaiseau, France
29
Faculty of Science, University of Montenegro, Podgorica, Montenegro
30
Institute of Physics, Academy of Sciences of the Czech Republic, Praha, Czech Republic
31
Faculty of Mathematics and Physics, Charles University, Praha, Czech Republic
32
Dipartimento di Fisica Università di Roma Tre and INFN Roma 3, Roma, Italy
33
Institute for Nuclear Research and Nuclear Energy, Sofia, Bulgaria
34
Institute of Physics and Technology of the Mongolian Academy of Sciences, Ulaanbaatar, Mongolia
35
Paul Scherrer Institut, Villigen, Switzerland
36
Fachbereich C, Universität Wuppertal, Wuppertal, Germany
37
Yerevan Physics Institute, Yerevan, Armenia
38
DESY, Zeuthen, Germany
39
Institut für Teilchenphysik, ETH, Zürich, Switzerland
40
Physik-Institut der Universität Zürich, Zürich, Switzerland
41
Department of Physics, Oxford University, Oxford, UK
* e-mail: daum@mail.desy.de
Received:
6
February
2013
Revised:
28
March
2013
Published online:
20
April
2013
Charged particle production in deep-inelastic ep scattering is measured with the H1 detector at HERA. The kinematic range of the analysis covers low photon virtualities, 5<Q
2<100 GeV2, and small values of Bjorken-x, 10−4<x<10−2. The analysis is performed in the hadronic centre-of-mass system. The charged particle densities are measured as a function of pseudorapidity (η
∗) and transverse momentum (
) in the range 0<η
∗<5 and 
in bins of x and Q
2. The data are compared to predictions from different Monte Carlo generators implementing various options for hadronisation and parton evolutions.
© Springer-Verlag Berlin Heidelberg and Società Italiana di Fisica, 2013
