Formation of the S = -1 resonance X(2265) in the reaction pp ?X+K+ at 2.50 and 2.85 GeV

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• 作者：P. Kienle (1) (2)
  M. Maggiora (3)
  K. Suzuki (2)
  T. Yamazaki (4) (5)
  M. Alexeev (14) (3)
  F. Balestra (3)
  Y. Bedfer (6)
  R. Bertini (3) (6)
  L. C. Bland (7)
  A. Brenschede (8)
  F. Brochard (6)
  M. P. Bussa (3)
  M. Chiosso (3)
  Seonho Choi (7)
  M. L. Colantoni (3)
  R. Dressler (13)
  M. Dzemidzic (7)
  J. -Cl. Faivre (6)
  A. Ferrero (3)
  L. Ferrero (3)
  J. Foryciarz (10) (11)
  I. Fr?hlich (8)
  V. Frolov (9)
  R. Garfagnini (3)
  A. Grasso (3)
  S. Heinz (3) (6)
  W. W. Jacobs (7)
  W. Kühn (8)
  A. Maggiora (3)
  D. Panzieri (12)
  H. -W. Pfaff (8)
  G. Pontecorvo (3) (9)
  A. Popov (9)
  J. Ritman (8)
  P. Salabura (10)
  V. Tchalyshev (9)
  F. Tosello (3)
  S. E. Vigdor (7)
  G. Zosi (3)
  
• 刊名：The European Physical Journal A - Hadrons and Nuclei
• 出版年：2012
• 出版时间：December 2012
• 年：2012
• 卷：48
• 期：12
• 全文大小：614KB
• 参考文献：1. T. Yamazaki / et al., Phys. Rev. Lett. 104, 132502 (2010) CrossRef
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• 作者单位：P. Kienle (1) (2)
  M. Maggiora (3)
  K. Suzuki (2)
  T. Yamazaki (4) (5)
  M. Alexeev (14) (3)
  F. Balestra (3)
  Y. Bedfer (6)
  R. Bertini (3) (6)
  L. C. Bland (7)
  A. Brenschede (8)
  F. Brochard (6)
  M. P. Bussa (3)
  M. Chiosso (3)
  Seonho Choi (7)
  M. L. Colantoni (3)
  R. Dressler (13)
  M. Dzemidzic (7)
  J. -Cl. Faivre (6)
  A. Ferrero (3)
  L. Ferrero (3)
  J. Foryciarz (10) (11)
  I. Fr?hlich (8)
  V. Frolov (9)
  R. Garfagnini (3)
  A. Grasso (3)
  S. Heinz (3) (6)
  W. W. Jacobs (7)
  W. Kühn (8)
  A. Maggiora (3)
  D. Panzieri (12)
  H. -W. Pfaff (8)
  G. Pontecorvo (3) (9)
  A. Popov (9)
  J. Ritman (8)
  P. Salabura (10)
  V. Tchalyshev (9)
  F. Tosello (3)
  S. E. Vigdor (7)
  G. Zosi (3)
  
  1. Excellence Cluster Universe, Technische Universit?t München, Garching, Germany
  2. Stefan Meyer Institute for Subatomic Physics, Austrian Academy of Sciences, Vienna, Austria
  3. Dipartimento di Fisica Generale “A. Avogadro-and INFN, Torino, Italy
  4. Department of Physics, University of Tokyo, 113-0033, Tokyo, Japan
  5. RIKEN Nishina Center, 351-0198, Saitama, Japan
  14. INFN, Trieste, Italy
  6. Laboratoire National Saturne, CEA Saclay, France
  7. Indiana University Cyclotron Facility, Bloomington, Indiana, USA
  8. II. Physikalisches Institut, Universit?t Gie?en, Gie?en, Germany
  13. Forschungszentrum Rossendorf, Rossendorf, Germany
  10. M. Smoluchowski Institute of Physics, Jagellonian University, Kraków, Poland
  11. H. Niewodniczanski Institute of Nuclear Physics, Kraków, Poland
  9. JINR, Dubna, Russia
  12. Università del Piemonte Orientale and INFN, Torino, Italy
  
• ISSN：1434-601X

文摘

Analyzing DISTO data of pp ?pΛK + at T p = 2.50 and 2.85GeV to populate a previously reported X(2265) -resonance with M x = 2267 MeV/c2 and Γ x = 118 MeV at 2.85GeV, we found that the yield of X(2265) at 2.50GeV is much less than that at 2.85GeV (less than 10%), though it is expected from a kinematical consideration to be produced as much as 33% of that at 2.85GeV. The small population of X(2265) at 2.50GeV is consistent with the very weak production of Γ(1405) at the same incident energy toward its production threshold, thus indicating that Γ(1405) plays an important role as a doorway state for the formation of X(2265).