Search for exotic baryon resonances with isospin I = 5/2 in the reaction np. -->. p. pi. /sup +/. pi. /sup +/. pi. /sup -/. pi. /sup -/n at p/sub n/ = 5. 10 +- 0. 17 GeV/c, and study of the observed peaks
Journal Article
·
· Sov. J. Nucl. Phys. (Engl. Transl.); (United States)
OSTI ID:5576622
In 3088 events of the reaction np..-->..p..pi../sup +/..pi../sup +/..pi../sup -/..pi../sup -/n at momentum 5.10 +- 0.17 GeV/c we have studied the effective mass spectra of ..delta../sup + +/..pi../sup +/(..delta../sup -/..pi../sup -/) combinations for the purpose of seeking and investigating exotic baryon resonances with isospin I = 5/2. Peaks are observed which exceed the background by 3--4 standard deviations at masses 1438, 1522, and 1894 MeV/c/sup 2/. The widths of these resonances are estimated as 23, < or =20, and < or =40 MeV/c/sup 2/, respectively. The sets of spins and parities for the resonance with mass 1438 MeV/c/sup 2/ are 3/2/sup + -/ and 5/2/sup + -/, and those for the resonance with mass 1522 MeV/c/sup 2/ are 1/2/sup + -/, 3/2/sup -/, and 5/2/sup +/. The cross sections for production of these resonances in the given reaction are equal to several microbarns. The results are compared with various theoretical models.
- Research Organization:
- Joint Institute for Nuclear Research
- OSTI ID:
- 5576622
- Journal Information:
- Sov. J. Nucl. Phys. (Engl. Transl.); (United States), Journal Name: Sov. J. Nucl. Phys. (Engl. Transl.); (United States) Vol. 37:3; ISSN SJNCA
- Country of Publication:
- United States
- Language:
- English
Similar Records
Search for backwards produced exotic meson resonances and study of particle spectra and mass distributions in the reaction. pi. /sup +/ + P. -->. n (forward) + X/sup + +/ at 8. 4 GeV/c. [Upper limits, G parity, 8. 4 GeV/c]
Observation of Two New N* Peaks in J/{psi}{yields}p{pi}{sup -}n and p{pi}{sup +}n Decays
Study of the f{sub 0}(1500)/f{sub 2}(1565) production in the exclusive annihilation {bar n}p{r_arrow}{pi}{sup +}{pi}{sup +}{pi}{sup {minus}} in flight
Technical Report
·
Fri Aug 01 00:00:00 EDT 1975
·
OSTI ID:7348938
Observation of Two New N* Peaks in J/{psi}{yields}p{pi}{sup -}n and p{pi}{sup +}n Decays
Journal Article
·
Fri Aug 11 00:00:00 EDT 2006
· Physical Review Letters
·
OSTI ID:20860634
Study of the f{sub 0}(1500)/f{sub 2}(1565) production in the exclusive annihilation {bar n}p{r_arrow}{pi}{sup +}{pi}{sup +}{pi}{sup {minus}} in flight
Journal Article
·
Wed Dec 31 23:00:00 EST 1997
· Physical Review, D
·
OSTI ID:566066
Related Subjects
645103* -- High Energy Physics-- Particle Interactions & Properties-Experimental-- Strong Interactions & Baryon & Meson Properties
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BARYON RESONANCES
BARYON-BARYON INTERACTIONS
BARYONS
BOSONS
CROSS SECTIONS
EFFECTIVE MASS
ELEMENTARY PARTICLES
ENERGY RANGE
FERMIONS
GEV RANGE
GEV RANGE 01-10
HADRON-HADRON INTERACTIONS
HADRONS
INTERACTIONS
ISOSPIN
MASS
MESONS
N RESONANCES
N-1520 RESONANCES
NEUTRONS
NUCLEON-NUCLEON INTERACTIONS
NUCLEONS
PARTICLE INTERACTIONS
PARTICLE PRODUCTION
PARTICLE PROPERTIES
PIONS
PIONS MINUS
PIONS PLUS
PROTON-NEUTRON INTERACTIONS
PROTON-NUCLEON INTERACTIONS
PROTONS
PSEUDOSCALAR MESONS
RESONANCE PARTICLES
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BARYON RESONANCES
BARYON-BARYON INTERACTIONS
BARYONS
BOSONS
CROSS SECTIONS
EFFECTIVE MASS
ELEMENTARY PARTICLES
ENERGY RANGE
FERMIONS
GEV RANGE
GEV RANGE 01-10
HADRON-HADRON INTERACTIONS
HADRONS
INTERACTIONS
ISOSPIN
MASS
MESONS
N RESONANCES
N-1520 RESONANCES
NEUTRONS
NUCLEON-NUCLEON INTERACTIONS
NUCLEONS
PARTICLE INTERACTIONS
PARTICLE PRODUCTION
PARTICLE PROPERTIES
PIONS
PIONS MINUS
PIONS PLUS
PROTON-NEUTRON INTERACTIONS
PROTON-NUCLEON INTERACTIONS
PROTONS
PSEUDOSCALAR MESONS
RESONANCE PARTICLES