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Journal articles
Feasibility studies of the time-like proton electromagnetic form factor measurements with PANDA at FAIR
M. Sudol
1
M. C. Mora Espi
E. Becheva
1
J. Boucher
1
T. Hennino
1
R. Kunne
1
D. Marchand
1
S. Ong
1
B. Ramstein
1
J. van de Wiele
1
T. Zerguerras
1
F. Maas
2
B. Kopf
M. Pelizaeus
M. Steinke
J. Zhong
E. Tomasi-Gustafsson
3
T. Hennino 1
Author
R. Kunne 1
Author
D. Marchand 1
Author IdHAL : dominique-marchand ORCID : https://orcid.org/0000-0002-6647-0852
S. Ong 1
Author
E. Tomasi-Gustafsson 3
Author
1
IPNO - Institut de Physique Nucléaire d'Orsay (IPN - 15, rue Georges Clemenceau - 91406 ORSAY CEDEX - France)
- UP11 - Université Paris-Sud - Paris 11 (Bâtiment 300 - 91405 Orsay cedex - France)
- IN2P3 - Institut National de Physique Nucléaire et de Physique des Particules du CNRS (France)
- CNRS - Centre National de la Recherche Scientifique : UMR8608 (France)
2
GSI - Helmholtz zentrum für Schwerionenforschung GmbH (Planckstrasse 1, 64291 Darmstadt - Germany)
3
IRFU - Institut de Recherches sur les lois Fondamentales de l'Univers (CEA Saclay
F-91191 Gif sur Yvette cedex - France)
- CEA - Commissariat à l'énergie atomique et aux énergies alternatives : DRF/IRFU (Centre de Saclay Centre de Grenoble Centre de Cadarache etc - France)
- Université Paris-Saclay (Espace Technologique, Bat. Discovery - RD 128 - 2e ét., 91190 Saint-Aubin - France)
Abstract : The possibility of measuring the proton electromagnetic form factors in the time-like region at FAIR with the \PANDA detector is discussed. Detailed simulations on signal efficiency for the annihilation of $\bar p +p $ into a lepton pair as well as for the most important background channels have been performed. It is shown that precision measurements of the differential cross section of the reaction $\bar p +p \to e^++ e^-$ can be obtained in a wide angular and kinematical range. The individual determination of the moduli of the electric and magnetic proton form factors will be possible up to a value of momentum transfer squared of $q^2\simeq 14$ (GeV/c)$^2$. The total $\bar p +p\to e^++e^-$ cross section will be measured up to $q^2\simeq 28$ (GeV/c)$^2$. The results obtained from simulated events are compared to the existing data. Sensitivity to the two photons exchange mechanism is also investigated.
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http://hal.in2p3.fr/in2p3-00429661
Contributor : Sophie Heurteau <>
Submitted on : Tuesday, November 3, 2009 - 5:51:30 PM
Last modification on : Monday, December 21, 2020 - 10:56:01 PM
Contributor : Sophie Heurteau <>
Submitted on : Tuesday, November 3, 2009 - 5:51:30 PM
Last modification on : Monday, December 21, 2020 - 10:56:01 PM
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- HAL Id : in2p3-00429661, version 1
- ARXIV : 0907.4478
- DOI : 10.1140/epja/i2010-10960-8
Citation
M. Sudol, M. C. Mora Espi, E. Becheva, J. Boucher, T. Hennino, et al.. Feasibility studies of the time-like proton electromagnetic form factor measurements with PANDA at FAIR. European Physical Journal A, EDP Sciences, 2010, 44, pp.373-384. ⟨10.1140/epja/i2010-10960-8⟩. ⟨in2p3-00429661⟩
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