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Subatomic Physics

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18.9. References 577<br />

18.51. (a) In the case of a normal nucleus, 4 He is the one with a full S state. Is<br />

this also true if a quark basis is used, where the nucleons are made up<br />

of u and d quarks?<br />

(b) If strange quarks are included, the color-singlet di-baryon with a full<br />

space–spin flavor S state is called H. What strong decays are allowed<br />

for the H if its mass is sufficiently large? What must be the upper limit<br />

of its mass (in MeV/c 2 )iftheH is to be stable for hadronic decays?<br />

(c) If the mass is lower than the critical value of part (b), what would be<br />

the approximate expected lifetime of the H?<br />

18.52. What reaction could be used to produce double hypernuclei, i.e., those with<br />

two lambdas replacing two neutrons?

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