skip to main content

DOE PAGESDOE PAGES

Title: Measurement of the in-medium Φ-meson width in proton–nucleus collisions

We measured the production of Φ mesons in the collisions of 2.83 GeV protons with C, Cu, Ag, and Au at forward angles via the Φ → K+K- decay using the COSY-ANKE magnetic spectrometer. The Φ meson production cross section follows a target mass dependence of A0.56±0.02 in the momentum region of 0.6-1.6 GeV/c. Moreover, the comparison of the data with model calculations suggests that the in-medium Φ width is about an order of magnitude larger than its free value.
Authors:
 [1] ;  [2] ;  [3] ;  [4] ;  [2] ;  [5] ;  [6] ;  [7] ;  [2] ;  [2] ;  [8] ;  [9] ;  [7] ;  [2] ;  [10] ;  [11] ;  [7] ;  [2] ;  [2] ;  [8] more »;  [11] ;  [12] ;  [13] ;  [2] ;  [2] ;  [14] ;  [15] ;  [16] ;  [2] « less
  1. Julich Research Centre (Germany); Inst. for Theoretical and Experimental Physics, Moscow (Russia)
  2. Julich Research Centre (Germany)
  3. Inst. for Theoretical and Experimental Physics, Moscow (Russia)
  4. Russian Academy of Sciences (RAS), Moscow (Russian Federation)
  5. Julich Research Centre (Germany); Tbilisi State Univ. (Germany)
  6. Univ. of Erlangen, Nuremberg (Germany); Joint Inst. for Nuclear Research (JINR), Dubna (Russian Federation)
  7. Petersburg Nuclear Physics Inst., Gathina (Russia)
  8. Helmholtz-Zentrum Dresden Rossendorf (Germany)
  9. Univ. of Basel (Switzerland)
  10. Osaka Univ. (Japan)
  11. Julich Research Centre (Germany); Joint Inst. for Nuclear Research (JINR), Dubna (Russian Federation)
  12. Julich Research Centre (Germany); Univ. of Bonn (Germany); Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
  13. P.N. Lebedev Physical Inst., Moscow (Russia)
  14. Helmholtz-Zentrum Dresden Rossendorf (Germany); Lomonosov Moscow State Univ., Moscow (Russia)
  15. Julich Research Centre (Germany); Petersburg Nuclear Physics Inst., Catchina (Russia)
  16. UCI, London (United Kingdom)
Publication Date:
OSTI Identifier:
1008150
Report Number(s):
JLAB-THY--10-1195; DOE/OR/23177--1483; arXiv:1008.0232
Journal ID: ISSN 0370-2693; TRN: US1101340
Grant/Contract Number:
AC05-06OR23177
Type:
Accepted Manuscript
Journal Name:
Physics Letters. Section B
Additional Journal Information:
Journal Volume: 695; Journal Issue: 1-4; Journal ID: ISSN 0370-2693
Publisher:
Elsevier
Research Org:
Thomas Jefferson National Accelerator Facility, Newport News, VA (United States)
Sponsoring Org:
USDOE Office of Science (SC)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; CROSS SECTIONS; DECAY; MAGNETIC SPECTROMETERS; MESONS; PRODUCTION; PROTONS; TARGETS phi meson production; nuclear medium effects