123,843 research outputs found
A study of the f0(1370), f0(1500), f0(2000) and f2(1950) observed in the centrally produced 4pi final states
The production and decay properties of the f0(1370), f0(1500), f0(2000) and
f2(1950) have been studied in central pp interactions at 450 GeV/c. The dPT,
phi and |t| distributions of these resonances are presented. For the J = 0
states, the f0(1370) and f0(2000) have similar dPT and phi dependences. These
are different to the dPT and phi dependences of the f0(980), f0(1500) and
f0(1710). For the J = 2 states the f2(1950) has different dependences to the
f2(1270) and f2'(1520). This shows that the dPT and phi dependences are not
just J phenomena.Comment: 14 pages, Latex, 4 Figure
Manifestations of high density QCD in the first RHIC data
We derive a simple analytical scaling function which embodies the predictions
of high density QCD on the energy, centrality, rapidity, and atomic number
dependences of hadron multiplicities in nuclear collisions. Both centrality and
rapidity dependences of hadron multiplicity in collisions as measured
at RHIC at are well described in this approach. The
centrality and rapidity dependences of hadron multiplicity at $\sqrt{s}= 200 \
{GeV}$ run at RHIC are predicted; the variation of these dependences with
energy appear different from other approaches, and can be used as an important
test of the ideas based on parton saturation and classical Chromo-Dynamics.Comment: 15 pages, 7 figures; final journal version - 3 typos corrected,
discussion extende
Brownian forgery of statistical dependences
The balance held by Brownian motion between temporal regularity and
randomness is embodied in a remarkable way by Levy's forgery of continuous
functions. Here we describe how this property can be extended to forge
arbitrary dependences between two statistical systems, and then establish a new
Brownian independence test based on fluctuating random paths. We also argue
that this result allows revisiting the theory of Brownian covariance from a
physical perspective and opens the possibility of engineering nonlinear
correlation measures from more general functional integrals.Comment: 13 pages, 2 figures, formatting based on revtex4; v2: revised proof
of extended forgery and minor changes; v3: additional discussion on practical
implementation and minor edits, published versio
Thermodynamics of a Fermi liquid beyond the low-energy limit
We consider the non-analytic temperature dependences of the specific heat
coefficient, C(T)/T, and spin susceptibility, \chi_{s} (T), of 2D interacting
fermions beyond the weak-coupling limit. We demonstrate within the
Luttinger-Ward formalism that the leading temperature dependences of C(T)/T and
\chi_s (T) are linear in T, and are described by the Fermi liquid theory. We
show that these temperature dependences are universally determined by the
states near the Fermi level and, for a generic interaction, are expressed via
the spin and charge components of the exact backscattering amplitude of
quasi-particles. We compare our theory to recent experiments on monolayers of
3He.Comment: 5 pages, 1 eps figure, submitted to PR
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