Color interference and confinement effects in W pair production

Jun, 1994
10 pages
Published in:
  • Z.Phys.C 64 (1994) 659-664
Report number:
  • LU-TP-94-9

Citations per year

19952002200920162023051015
Abstract: (Springer)
In the reactione+e− →W+W− → (q1qˉ2q_1 \bar q_2 ) (Q1Qˉ2Q_1 \bar Q_2 ) we expect that normally the colour singlet systems (q1qˉ2q_1 \bar q_2 ) and (Q1Qˉ2Q_1 \bar Q_2 ) hadronize independently into two hadron chains or strings. However also the pairs (q1Qˉ2q_1 \bar Q_2 ) and (Q1qˉ2Q_1 \bar q_2 ) form colour singlets with probability 1/Nc2=1/9. This probability could be further enhanced by gluon exchange. We therefore expect that the hadronization can give “recoupled” colour strings between these quark-antiquark pairs with some small probability, and a study of this effect will give interesting information about the vacuum structure. In this paper we discuss a possible experimental signal for recoupled events and show that such events can be identified also when the effect of gluon emission before the recoupling is taken into account.
  • electron positron: annihilation
  • annihilation: electron positron
  • W: pair production
  • pair production: W
  • W: nonleptonic decay
  • nonleptonic decay: W
  • hadron: multiple production
  • multiple production: hadron
  • quark: hadronization
  • quark: confinement