Table 12-2 The quarks Weak Mass Baryon number Quark (q) Symbol Charge (e) isospin T; (MeV/c?) Spin (h) 1st generation 에3 336 и dn down 338 2nd generation charm 1,500 strange 540 3rd generation top 174,000 bottom 5,000 Table 12-5 Internal quantum numbers of the quarks Quark т B' и -1 -1 1 -1 Table 12-11 Quark composition of selected hadrons Baryons Quarks Mesons Quarks иud п ud п udd TT ud ЛО uds K+ us 4++ ко ds ийи Σ иus KO sd Σ0 uds su Σ dds J/p uss D+ cd dss D° си Ω. SSS Cs л* udc B+ ub иис B° аь Σ udc Bº db usc B ub

For this problem, you may use your notes and the tables provided only for parts a, b, and c.

a) For the given quark combination ( d , s̅ ) determine the baryon number, the strangeness, and the electric charge quantum number, Q’. Recall, a particle’s charge q is related to its electric charge quantum number Q’ by q = eQ’. [Note: we are using the symbol Q’ so as to prevent confusion with the Q-value of a nuclear decay.]