Scaled Momentum Distributions for K _S⁰ and ∧/∧ in DIS at HERA

Authors

• H. Abramowicz, Tel Aviv University
• I. Abt, Max Planck Institute for Physics (Werner Heisenberg Institute)
• L. Adamczyk, AGH University of Science and Technology
• M. Adamus, National Centre for Nuclear Research (NCBJ)
• R. Aggarwal, Panjab University
• S. Antonelli, Istituto Nazionale di Fisica Nucleare, Sezione di Bologna
• P. Antonioli, Istituto Nazionale di Fisica Nucleare, Sezione di Bologna
• A. Antonov, National Research Nuclear University MEPhI
• M. Arneodo, Università degli Studi del Piemonte Orientale "Amedeo Avogadro"
• V. Aushev, Institute of Nuclear Research, National Academy of Sciences in Ukraine
• Y. Aushev, Taras Shevchenko National University of Kyiv
• O. Bachynska, Deutsches Elektronen-Synchrotron (DESY)
• A. Bamberger, Universität Freiburg im Breisgau
• A. N. Barakbaev, Ministry of Education and Science of the Republic of Kazakhstan
• G. Barbagli, Istituto Nazionale di Fisica Nucleare, Sezione di Firenze
• G. Bari, Istituto Nazionale di Fisica Nucleare, Sezione di Bologna
• F. Barreiro, Universidad Autónoma de Madrid
• N. Bartosik, Taras Shevchenko National University of Kyiv
• D. Bartsch, Universität Bonn
• M. Basile, Istituto Nazionale di Fisica Nucleare, Sezione di Bologna
• O. Behnke, Deutsches Elektronen-Synchrotron (DESY)
• J. Behr, Deutsches Elektronen-Synchrotron (DESY)
• U. Behrens, Deutsches Elektronen-Synchrotron (DESY)
• L. Bellagamba, Istituto Nazionale di Fisica Nucleare, Sezione di BolognaFollow
• A. Bertolin, Istituto Nazionale Di Fisica Nucleare, Sezione di Padova
• S. Bhadra, York University
• M. Bindi, Istituto Nazionale di Fisica Nucleare, Sezione di Bologna
• C. Blohm, Deutsches Elektronen-Synchrotron (DESY)
• V. Bokhonov, Institute of Nuclear Research, National Academy of Sciences in Ukraine
• T. Bold, AGH University of Science and Technology
• K. Bondarenko, Taras Shevchenko National University of Kyiv
• Margarita C. K. Mattingly, Andrews UniversityFollow

Document Type

Article

Publication Date

4-13-2012

Keywords

Lepton-Nucleon Scattering

Abstract

Scaled momentum distributions for the strange hadrons K S0 and ∧/∧were measured in deep inelastic ep scattering with the ZEUS detector at HERA using an integrated luminosity of 330 pb -1. The evolution of these distributions with the photon virtuality, Q 2, was studied in the kinematic region 10 < Q 2 < 40000 GeV 2 and 0.001 < x < 0.75, where x is the Bjorken scaling variable. Clear scaling violations are observed. Predictions based on different approaches to fragmentation were compared to the measurements. Leading-logarithm parton-shower Monte Carlo calculations interfaced to the Lund string fragmentation model describe the data reasonably well in the whole range measured. Nextto-leading-order QCD calculations based on fragmentation functions, FFs, extracted from e +e - data alone, fail to describe the measurements. The calculations based on FFs extracted from a global analysis including e +e -, ep and pp data give an improved description. The measurements presented in this paper have the potential to further constrain the FFs of quarks, anti-quarks and gluons yielding K S0 and ∧/∧ strange hadrons. © SISSA 2012.

Journal Title

Journal of High Energy Physics

Volume

2012

Issue

3

DOI

https://doi.org/10.1007/JHEP03(2012)020

First Department

Physics

Recommended Citation

Abramowicz, H.; Abt, I.; Adamczyk, L.; Adamus, M.; Aggarwal, R.; Antonelli, S.; Antonioli, P.; Antonov, A.; Arneodo, M.; Aushev, V.; Aushev, Y.; Bachynska, O.; Bamberger, A.; Barakbaev, A. N.; Barbagli, G.; Bari, G.; Barreiro, F.; Bartosik, N.; Bartsch, D.; Basile, M.; Behnke, O.; Behr, J.; Behrens, U.; Bellagamba, L.; Bertolin, A.; Bhadra, S.; Bindi, M.; Blohm, C.; Bokhonov, V.; Bold, T.; Bondarenko, K.; and Mattingly, Margarita C. K., "Scaled Momentum Distributions for K _S⁰ and ∧/∧ in DIS at HERA" (2012). Faculty Publications. 1650.
https://digitalcommons.andrews.edu/pubs/1650

Acknowledgements

Retrieved January 29, 2021 from https://link.springer.com/article/10.1007/JHEP03(2012)020