72,238 research outputs found
Sigma, Kappa and fo(980) in E791 and BES II data
Both sigma and kappa are well established from E791 data on D->3pi and
D->K-pi-pi$ and BES II data on J/Psi->omega-pi-pi and KKpipi. Fits to these
data are accurately consistent with pi-pi and Kpi elastic scattering when one
allows for the Adler zero which arises from Chiral Symmetry Breaking. The phase
variation with mass is also consistent between elastic scattering and
production data.Comment: 15 pages, 8 figures. A shortened version of hep-ex.0510014,
conforming to page restrictions for Hadron05 Proceeding
Letter, n.d., from Jester J. Hairston to Eva Jessye
2 pages, Hairston was a choral conductor, a composer, and an actor. Kurt Adler, Misha Bakalinikoff, and Marge (Isabelle Margaret Swanigan), Hairston\u27s wife, are mentioned
Comment on "Infrared freezing of Euclidean QCD observables"
Recently, P. M. Brooks and C.J. Maxwell [Phys. Rev. D{\bf 74} 065012 (2006)]
claimed that the Landau pole of the one-loop coupling at is
absent from the leading one-chain term in a skeleton expansion of the Euclidean
Adler function. Moreover, in this approximation one has continuity
along the Euclidean axis and a smooth infrared freezing, properties known to be
satisfied by the "true" Adler function. We show that crucial in the derivation
of these results is the use of a modified Borel summation, which leads
simultaneously to the loss of another fundamental property of the true Adler
function: the analyticity implied by the K\"allen-Lehmann representation
Quark Mixing Matrix Studies and Lepton Flavor Violation Searches Using Rare Decays of Kaons
I review recent results from experiments on rare decays of kaons,
concentrating on searches for lepton flavor violation (LFV) and on measurements
of quark mixing (CKM) matrix elements. The LFV results are the culmination of
15 years of experimentation at Brookhaven National Laboratory and are unlikely
to be improved upon soon. The CKM studies derive from measurements of decay
rates of charged and neutral kaons into lepton anti-lepton pairs, both with and
without a charged or neutral pion. I discuss recent results and prospects for
improved measurements that could provide an unambiguous test of the Standard
Model explanation for CP violation. This paper is the written version of a talk
presented at the Lepton-Photon Conference in August 1999.Comment: Written version of a talk at the 1999 Lepton Photon Conferenc
Transverse Dynamics at RHIC
Studies of , transverse momentum spectra and anisotropy flow from
nuclear collisions at RHIC indicate early thermalization and strong collective
expansion. We propose a systematic study of the anisotropy parameter and
the transverse momentum distributions of and in order to extract information on partonic collective flow.Comment: 4 pages, 3 figures; presented at Quark Matter 2002, Nantes, France,
July 18-24, 2002. Proceedings to be published in Nucl. Phys.
On the B\"acklund Transformation for the Moyal Korteweg-de Vries Hierarchy
We study the B\"acklund symmetry for the Moyal Korteweg-de Vries (KdV)
hierarchy based on the Kuperschmidt-Wilson Theorem associated with second
Gelfand-Dickey structure with respect to the Moyal bracket, which generalizes
the result of Adler for the ordinary KdV.Comment: 9 pages, Revte
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