Skip to main content
OSTI.GOVU.S. Department of Energy Office of Scientific and Technical Information
U.S. Department of Energy
Office of Scientific and Technical Information
 

{bar p}p annihilation at rest into K{sub L}K{sup {plus_minus}}{pi}{sup {minus_plus}}

Journal Article · · Physical Review, D
; ; ; ; ; ; ;  [1]; ; ; ; ; ;  [2]; ; ; ; ; ; more »; ;  [3]; ; ;  [4]; ; ; ; ; ; ; ; ; ; ;  [5];  [6]; ; ;  [7]; ; ; ; ; ; ; ; ; ;  [8]; ; ; ; ; ; ; ; ; ; ; ; ;  [9]; ; ; ; ;  [10]; ; ; ; ;  [11];  [12];  [13];  [14] « less
  1. Universitaet Karlsruhe, D-76021Karlsruhe (Germany)
  2. Universitaet Hamburg, D-22761Hamburg (Germany)
  3. Universitaet Zuerich, CH-8057Zuerich (Switzerland)
  4. Rutherford Appleton Laboratory, Chilton, DidcotOX110QX (United Kingdom)
  5. Universitaet Bonn, D-53115Bonn (Germany)
  6. LPNHE Paris VI, VII, F-75252Paris (France)
  7. Carnegie Mellon University, Pittsburgh, Pennsylvania15213 (United States)
  8. Universitaet Bochum, D-44780Bochum (Germany)
  9. Universitaet Muenchen, D-80333Muenchen (Germany)
  10. University of California, LBNL, Berkeley, California94720 (United States)
  11. CERN, CH-1211Geneva4 (Switzerland)
  12. University of California, Los Angeles, California90024 (United States)
  13. Academy of Science, H-1525Budapest (Hungary)
  14. Centre de Recherches Nucleaires, F-67037Strasbourg (France)
+ Show Author Affiliations

We present a measurement and partial wave analysis of the final state K{sub L}K{sup {plus_minus}}{pi}{sup {minus_plus}} of {bar p}p annihilation at rest in liquid hydrogen. This reaction is important for the study of the {bar K}K decay mode of scalar resonances, in particular, the isovectors a{sub 0}(980) and a{sub 0}(1450). The determination of the a{sub 0}(1450) production also fixes the {bar K}K coupling of the isoscalar f{sub 0}(1500) which is discussed as a glueball. We find B{bold (}{bar p}p{r_arrow}a{sub 0}(1450){pi};a{sub 0}(1450){r_arrow}{bar K}K{bold )}=(8.88{plus_minus}1.68){times}10{sup {minus}4} and hence B{bold (}{bar p}p{r_arrow}f{sub 0}(1500){pi};f{sub 0}(1500){r_arrow}{bar K}K{bold )}=(4.52{plus_minus}0.36){times}10{sup {minus}4}. The mass and width of a{sub 0}(1450) are m=1480{plus_minus}30MeV/c{sup 2} and {Gamma}=265{plus_minus}15MeV/c{sup 2}, respectively. For a{sub 0}(980) we determine the relative ratio B({bar p}p{r_arrow}a{sub 0}{pi};a{sub 0}{r_arrow}{bar K}K)/B({bar p}p{r_arrow}a{sub 0}{pi};a{sub 0}{r_arrow}{pi}{eta}) =0.23{plus_minus}0.05 and its relative coupling, {bar K}K to {pi}{eta}, is 1.03{plus_minus}0.14. {copyright} {ital 1998} {ital The American Physical Society}

OSTI ID:
624771
Journal Information:
Physical Review, D, Journal Name: Physical Review, D Journal Issue: 7 Vol. 57; ISSN 0556-2821; ISSN PRVDAQ
Country of Publication:
United States
Language:
English

Similar Records

Evidence for a{sub 0}(1450){yields}KK-bar in p-barp annihilation at rest
Journal Article · Fri May 29 00:00:00 EDT 1998 · AIP Conference Proceedings · OSTI ID:21199146
Spin-Parity Analysis of the Centrally Produced K{sup 0}{sub S}K{sup {plus_minus}}{pi}{sup {minus_plus}} System at 800 GeV/c
Journal Article · Sun Aug 01 00:00:00 EDT 1999 · Physical Review Letters · OSTI ID:359439
Partial wave analysis of the {ital K}{sup 0}{sub {ital s}}{ital K}{sup {plus_minus}}{pi}{sup {minus_plus}} system
Journal Article · Wed Jan 31 23:00:00 EST 1996 · AIP Conference Proceedings · OSTI ID:401042

Related Subjects

66 PHYSICS
ANNIHILATION
BAG MODEL
BRANCHING RATIO
K MATRIX
KAONS MINUS
KAONS NEUTRAL LONG-LIVED
KAONS PLUS
MESONS
PIONS MINUS
PIONS PLUS
PROTON-ANTIPROTON INTERACTIONS
PROTON-PROTON INTERACTIONS