| Autor: |
Chadeyeva, M. V., Grechko, V. E., Solov’ev, V. V., Turov, V. F. |
| Předmět: |
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| Zdroj: |
JETP Letters; 7/25/97, Vol. 66 Issue 2, p75, 7p |
| Abstrakt: |
The 2-meter liquid-hydrogen bubble chamber is exposed to a separated beam of α particles from the ITEP synchrotron. The momentum of the incident [sup 4]He nuclei, averaged over the fiducial volume of the chamber, is 5 GeV/c (the kinetic energy of initial protons in the nucleus rest frame is T[sub p] = 620 MeV). The spectral functions of decays α → tp and α → τn are extracted in the 4π geometry (the latter is extracted for the first time) from the exclusive reactions αp → tpp and αp → τpn in the spectator momentum region 0 < q < 0.3 GeV/c. The pole dominance criteria are carefully checked. Extrapolation of the nuclear vertex function to the pole gives a lower bound on the nuclear vertex constant. Our experimental data are compared with the results of other studies and with theoretical calculations. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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