Published December 2012
| Version v1
Journal article
Formation of the S = -1 resonance X(2265) in the reaction pp → X+K+ at 2.50 and 2.85 GeV
Creators
- Kienle, P.1, 2
- Maggiora, M.3, 4
- Balestra, F.3, 4
- Bussa, M.P.3, 4
- Chiosso, M.3, 4
- Colantoni, M.L.3, 4
- Ferrero, A.3, 4
- Ferrero, L.3, 4
- Garfagnini, R.3, 4
- Grasso, A.3, 4
- Maggiora, A.3, 4
- Tosello, F.3, 4
- Zosi, G.3, 4
- Suzuki, K.1
- Yamazaki, T.5, 6
- Alexeev, M.7, 3, 4
- Bedfer, Y.8
- Brochard, F.8
- Faivre, J.C.8
- Bertini, R.8, 3, 4
- Heinz, S.8, 3, 4
- Bland, L.C.9
- Choi, Seonho9
- Dzemidzic, M.9
- Jacobs, W.W.9
- Vigdor, S.E.9
- Brenschede, A.10
- Froehlich, I.10
- Kuehn, W.10
- Pfaff, H.W.10
- Ritman, J.10
- Dressler, R.11
- Foryciarz, J.12, 13
- Frolov, V.14
- Popov, A.14
- Tchalyshev, V.14
- Panzieri, D.3, 15
- Pontecorvo, G.14, 3, 4
- Salabura, P.13
- 1. Austrian Academy of Sciences, Stefan Meyer Institute for Subatomic Physics, Vienna (Austria)
- 2. Technische Universitaet Muenchen, Excellence Cluster Universe, Garching (Germany)
- 3. INFN, Torino (Italy)
- 4. Dipartimento di Fisica Generale ''A. Avogadro'', Torino (Italy)
- 5. RIKEN Nishina Center, Saitama (Japan)
- 6. University of Tokyo, Department of Physics, Tokyo (Japan)
- 7. INFN, Trieste (Italy)
- 8. Laboratoire National Saturne, CEA Saclay (France)
- 9. Indiana University Cyclotron Facility, Bloomington, Indiana (United States)
- 10. Universitaet Giessen, II. Physikalisches Institut, Giessen (Germany)
- 11. Forschungszentrum Rossendorf, Rossendorf (Germany)
- 12. H. Niewodniczanski Institute of Nuclear Physics, Krakow (Poland)
- 13. Jagellonian University, M. Smoluchowski Institute of Physics, Krakow (Poland)
- 14. JINR, Dubna (Russian Federation)
- 15. Universita del Piemonte Orientale, Torino (Italy)
Description
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/c 2 and Γx = 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). (orig.)
Availability note (English)
Available from: http://dx.doi.org/10.1140/epja/i2012-12183-5Additional details
Identifiers
Publishing Information
- Journal Title
- European Physical Journal. A
- Journal Volume
- 48
- Journal Issue
- 12
- Journal Page Range
- p. 1-5
- ISSN
- 1434-6001
INIS
- Country of Publication
- Germany
- Country of Input or Organization
- Germany
- INIS RN
- 44035458
- Subject category
- S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
- Resource subtype / Literary indicator
- Numerical Data
- Descriptors DEI
- EFFECTIVE MASS; EXCITATION FUNCTIONS; EXPERIMENTAL DATA; GEV RANGE 01-10; INELASTIC SCATTERING; KAONS PLUS; LAMBDA PARTICLES; MASS SPECTRA; MISSING MASS; MISSING-MASS SPECTRA; PARTICLE PRODUCTION; PROTON-PROTON INTERACTIONS; PROTONS; RESONANCE PARTICLES
- Descriptors DEC
- BARYON-BARYON INTERACTIONS; BARYONS; BOSONS; CROSS SECTIONS; DATA; DIFFERENTIAL CROSS SECTIONS; ELEMENTARY PARTICLES; ENERGY RANGE; FERMIONS; FUNCTIONS; GEV RANGE; HADRON-HADRON INTERACTIONS; HADRONS; HYPERONS; INFORMATION; INTERACTIONS; KAONS; LAMBDA BARYONS; MASS; MESONS; NUCLEON-NUCLEON INTERACTIONS; NUCLEONS; NUMERICAL DATA; PARTICLE INTERACTIONS; PROTON-NUCLEON INTERACTIONS; PSEUDOSCALAR MESONS; SCATTERING; SPECTRA; STRANGE MESONS; STRANGE PARTICLES