The Multiplicity dependence of inclusive $p_t$ spectra from $p p$ collisions at $\sqrt{s}$ = 200-GeV

GeV. By analyzing the multiplicity dependence we find that the spectrum shape can be decomposed into a part with amplitude proportional to multiplicity and described by a L\'evy distribution on transverse mass

m_t

, and a part with amplitude proportional to multiplicity squared and described by a gaussian distribution on transverse rapidity

y_t

. The functional forms of the two parts are nearly independent of event multiplicity. The two parts can be identified with the soft and hard components of a two-component model of p-p collisions. This analysis then provides the first isolation of the hard component of the

p_t

spectrum as a distribution of simple form on

y_t

.

Note:

17 pages, 10 figures

24.85.+p
25.40.Ve
13.75.Cs
24.60.-k
p p: colliding beams
p p: inclusive reaction
hadron: multiple production
charged particle: multiplicity
transverse momentum: spectrum
rapidity spectrum: transverse

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The Multiplicity dependence of inclusive $p_t$ spectra from $p p$ collisions at $\sqrt{s}$ = 200-GeV