19,307 research outputs found
New effects observed in central production by experiment WA102 at the CERN Omega Spectrometer
A partial wave analysis of the centrally produced KK and pipi systems shows
that the fJ(1710) has J = 0. In addition, a study of central meson production
as a function of the difference in transverse momentum (dPT) of the exchanged
particles shows that undisputed qqbar mesons are suppressed at small dPT
whereas the glueball candidates are enhanced and that the production cross
section for different resonances depends strongly on the azimuthal angle
between the two outgoing protons.Comment: 5 pages, Latex, 3 Figures to appear in the proceeding of PANIC 99,
Uppsala, Sweden, June 199
Resonance production in central pp collisions at the CERN Omega Spectrometer
A study of resonance production in central pp collisions is presented as a
function of several kinematical variables. In particular the difference in the
transverse momentum (dPT) of the exchanged particles shows that undisputed
qqbar mesons are suppressed at small dPT whereas glueball candidates are
enhanced and in addition, the azimuthal angle phi gives information on the
nature of the Pomeron.Comment: 14 pages, Latex, 5 Figure
Search for Pair Production of Scalar Leptoquarks
This article describes the search for pair production of scalar leptoquarks
performed by the CMS collaboration using the data from the 2010 proton-proton
run of the Large Hadron Collider at a center of mass energy of 7 TeV. The
following final state signatures from the decay of a pair of scalar leptoquarks
are described in here: the di-lepton plus jets final state (where the leptons
are either both electrons or both muons) and the lepton plus jets and
transverse missing energy final state (where the lepton is an electron).Comment: 8 pages, 10 figures, 3 tables, presented at the DPF conference
(August 9-13, 2011
Wiring optimization explanation in neuroscience: What is Special about it?
This paper examines the explanatory distinctness of wiring optimization models in neuroscience. Wiring optimization models aim to represent the organizational features of neural and brain systems as optimal (or near-optimal) solutions to wiring optimization problems. My claim is that that wiring optimization models provide design explanations. In particular, they support ideal interventions on the decision variables of the relevant design problem and assess the impact of such interventions on the viability of the target system
A study of the pi^0pi^0 system produced in charge exchange and central collisions
A study of the system produced in charge exchange
collisions at 38 and 100 GeV/c and in central interactions at 450 GeV/c
has been carried out. The wave has rather a complicated structure in both
processes indicating the existence of several scalar resonances. The
and appear as dips at 1 and 1.5 GeV in the wave for charge
exchange reaction, and as shoulders at these masses in the wave for central
production. The production of the , and in
the reaction as a function of the
kinematical filter shows the behaviour differed from what has been observed for
the undisputed mesons. An extra state is seen in the
wave for charge exchange reaction as a dip at 2 GeV. Resonances with higher
spins, , and , have also been studied. All
the three mesons are produced in the reaction mainly
via an one-pion exchange for small , whereas a natural-parity exchange
domimates for large . The behaviour of the centrally produced
as a function of the is consistent with what has been observed for
other states.Comment: 6 pages, 6 figures, use file stwol.sty, presented at International
High-Energy Physics Euroconference in Quantum Chromodynamics, 2-8 July 1998,
Montpellier, France on behalf of the GAMS and WA102 Collaboration
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