Pion Capture in ${}^{6}{Li}$ and ${}^{7}{Li}$ , the Formation of ${}^{4}H$ , a Search for ${}^{5}H$

The breakup of

{}^{6}{Li}

and

{}^{7}{Li}

into two charged particles following

π^{-}

capture is studied. The branching ratios for the reactions

π^{-} + {}^{6}{Li} \to 2 {}^{3}H (3.4 \times 10^{- 4})

π^{-} + {}^{7}{Li} \to {}^{3}H + {}^{4}H (3.7 \times 10^{- 4})

, and

π^{-} + {}^{7}{Li} \to {}^{3}H + {}^{4}H^{*} (4 \times 10^{- 4})

are measured. The energy of the ground state and first excited state (

{}^{4}H^{*}

) of particle-unstable

{}^{4}H

are found to be 2.9 and 6.1 MeV above the energy of the unbound

{}^{3}H + n

. An upper limit is set for the branching ratio of the reaction

π^{-} + {}^{7}{Li} \to {}^{2}H + {}^{5}H (< 2 \times 10^{- 4})

This publication has 8 references indexed in Scilit:

Pion Capture inLi6andLi7, the Formation ofH4, a Search forH5