New evidence for supernarrow dibaryons production in pd interactions |
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Authors: | LV Fil'kov VL Kashevarov ES Konobeevski MV Mordovskoy SI Potashev VA Simonov VM Skorkin SV Zuev |
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Institution: | (1) Lebedev Physical Institute, RAS, Leninsky Prospect 53, 117924 Moscow, Russia, RU;(2) Institute for Nuclear Research, RAS, 60-th October Anniversary Prospect 7a, 117312 Moscow, Russia, RU |
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Abstract: | The analysis of new experimental data, obtained at the Proton Linear Accelerator of INR, with the aim to search for supernarrow
dibaryons in the pd↦ppX
1 and pd↦pdX
2 reactions is presented. Narrow peaks with an experimental width of 5 MeV at masses of 1904±2, 1926±2, and 1942±2 MeV have
been observed in missing mass M
pX1 spectra. In the missing mass M
X1 spectra, the peaks at M
X1 = 966±2, 986±2, and 1003±2 MeV have been found. The analysis of the data obtained leads to the conclusion that the observed
peaks in M
pX1 spectra are most likely supernarrow dibaryons, the decay of which into two nucleons is forbidden by the Pauli exclusion principle.
An alternative interpretation of the spectra by assuming a decay of the supernarrow dibaryons in “exotic baryon states” with
masses M
X1 is discussed.
Received: 22 October 2001 / Accepted: 15 November 2001 |
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Keywords: | PACS 13 75 Cs Nucleon-nucleon interactions (including antinucleons deuterons etc ) – 14 20 Pt Dibaryons – 12 39 Mk Glueball and nonstandard multi-quark/gluon states |
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