ScienceAsia 21 (1995): 037-045 |doi: 10.2306/scienceasia1513-1874.1995.21.037

SCALAR PAIR PRODUCTION BY NAMBU STRINGS: ANGULAR CORRELATIONS

E.B. MANOUKIAN,^a(+) A. UNGKITCHANUKIT^a AND C.H. EAB^b

ABSTRACT: Pair production of oppositely charged scalar particles from charged and neutral Nambu strings are investigated. The strings are taken to be the circularly oscillating closed strings, as perhaps the simplest solution of the Nambu action.For the charged string the process proceeds via the couplings of the charged currents through the exchange of the photon and in the case of the neutral string the energy-momentum tensors are coupled via graviton exchange. 111 particular the angular correlations of the pair-produced scalar particles are calculated and are found to be qualitatively the same for both the emissions from the charged and neutral strings. The angular correlations being positive and increase rapidly with energy indicating that the production is jet-like at high energies. At any particularenergy ,the angular correlation for the scalar particles produced from the charged string is higher than that for the particles from the neutral string and the difference is quite pronounced at low energies.

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a Physics Department, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand.
b Chemistry Department, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand.

Received November 27, 1994