Nucleon-nucleon scattering in the model of composite quark bags: P-matrix analysis in the region T/sub L/< or approx. =1 GeV

Journal Article · Thu Mar 01 04:00:00 EST 1984 · Sov. J. Nucl. Phys. (Engl. Transl.); (United States)

OSTI ID:6261795

Veselov, A I; Grach, I L; Narodetskii, I M

The data of the recent phase-shift analysis VPI-SU of nucleon-nucleon scattering are used to calculate the P matrix for the coupled /sup 3/S/sub 1/--/sup 3/D/sub 1/ channels of pn scattering in the region T/sub L/< or approx. =1 GeV. It is shown that the two-channel P matrix calculated for a radius of the equivalent hadronic bag equal to b = 6.7 GeV/sup -1/ has a pole at (s)/sup 1/2/ = 2.16--2.17 GeV, in good agreement with the mass m = 2.16 GeV of the 6-quark state with I = 0 and J/sup P/ = 1/sup +/ obtained in the MIT bag model. It is noted that the P matrix for T/sub L/< or approx. =150 MeV is very sensitive to the statistical errors in the phase-shift analysis, particularly to the errors in the determination of the mixing parameter. It is shown also that in this energy region the P matrix constructed on the basis of the data of the phase-shift analysis VPI-SU violates the Breit condition and, as a consequence, is in sharp conflict with the predictions of realistic potential models. This inconsistency can be eliminated by changing the value of the mixing parameter by one or two standard deviations.

• Research Organization: Institute of Theoretical and Experimental Physics, State Atomic Energy Commission
• OSTI ID: 6261795
• Journal Information: Sov. J. Nucl. Phys. (Engl. Transl.); (United States), Journal Name: Sov. J. Nucl. Phys. (Engl. Transl.); (United States) Vol. 39:3; ISSN SJNCA
• Country of Publication: United States
• Language: English

Related Subjects

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Baryon No. Greater than 1-- (-1987)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BAG MODEL
BARYON-BARYON INTERACTIONS
COMPOSITE MODELS
ELASTIC SCATTERING
ENERGY RANGE
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INTERACTIONS
MATHEMATICAL MODELS
MEV RANGE
MEV RANGE 100-1000
NUCLEON-NUCLEON INTERACTIONS
PARTICLE INTERACTIONS
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PHASE SHIFT
QUARK MODEL
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