NDLI: K¯ photoproduction from protons

Content Provider	Springer Nature Link
Author	Sibirtsev, A. Haidenbauer, J. Krewald, S. Meißner, U. G. Thomas, A. W.
Copyright Year	2007
Abstract	We study the contribution of the Drell mechanism driven by K+ and K- exchange to the reaction γN → K¯N. Our calculation implements the full KN and ¯N reaction amplitudes in the form of partial-wave amplitudes taken from a meson-exchange model (KN) and a partial-wave analysis (¯N), respectively. Comparing our results to data of the LAMP2 Collaboration we observe that the Drell mechanism alone cannot describe the large Λ(1520) photoproduction rate observed experimentally. We argue that the discrepancy could be due to significant contributions from K * meson exchange with subsequent excitation of the Λ(1520)-resonance. After adding such contributions to our model a good agreement of the LAMP2 experiment is achieved. When applying the same model to the recent SAPHIR data we find an excellent description of the K+ p spectrum and find indications for a hyperon resonance with M R = 1617MeV and ΓR = 117MeV in the K- p mass distribution.
Starting Page	221
Ending Page	232
Page Count	12
File Format	PDF
ISSN	14346001
Journal	The European Physical Journal A - Hadrons and Nuclei
Volume Number	31
Issue Number	2
e-ISSN	1434601X
Language	English
Publisher	Società Italiana di Fisica
Publisher Date	2007-02-15
Publisher Place	Bologna
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Nuclear Physics, Heavy Ions, Hadrons Elementary Particles and Nuclei Nuclear Fusion
Content Type	Text
Resource Type	Article
Subject	Nuclear and High Energy Physics

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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