Zobrazeno 1 - 10
of 298
pro vyhledávání: '"Ochs, W."'
Publikováno v:
Nucl.Phys.Proc.Suppl.181-182:238-242,2008
We analyse data on pi pi and gamma gamma scattering below 700 MeV within an improved analytic K-matrix model. This model is based on an effective theory with couplings between resonances, hadrons and photons. The two-photon decay of a resonance can p
Externí odkaz:
http://arxiv.org/abs/0806.4092
Publikováno v:
Phys.Lett.B665:205-211,2008
We estimate the I=0 scalar meson sigma/f_0(600) parameters from pi-pi and gamma-gamma scattering data below 700 MeV using an improved analytic K-matrix model. A fit of the hadronic data gives a complex pole mass M_sigma= 422-i290 MeV, while simultane
Externí odkaz:
http://arxiv.org/abs/0804.4452
We reanalyse the gamma-gamma scattering data and conclude that in the mass region below 1 GeV the cross section for gamma-gamma to pi^0-pi^0 can be largely explained by the one pion exchange process with pi-pi rescattering. The radiative width of the
Externí odkaz:
http://arxiv.org/abs/0707.4511
Publikováno v:
PoS HEP2005:063,2006
An approach which unifies the Double Logarithmic Approximation at small x and the leading order DGLAP evolution of fragmentation functions at large x is presented. This approach reproduces exactly the Modified Leading Logarithm Approximation, but is
Externí odkaz:
http://arxiv.org/abs/hep-ph/0511228
Publikováno v:
Phys.Rev.D73:054020,2006
We define a general scheme for the evolution of fragmentation functions which resums both soft gluon logarithms and mass singularities in a consistent manner and to any order, and requires no additional theoretical assumptions. Using the Double Logar
Externí odkaz:
http://arxiv.org/abs/hep-ph/0510319
Publikováno v:
Phys.Rev.Lett. 95 (2005) 232002
An approach which unifies the Double Logarithmic Approximation at small x and the leading order DGLAP evolution of fragmentation functions at large x is presented. This approach reproduces exactly the Modified Leading Logarithm Approximation, but is
Externí odkaz:
http://arxiv.org/abs/hep-ph/0503170
Publikováno v:
Eur.Phys.J. C36 (2004) 49-56
We perform fits of $\Lambda_{\rm QCD}$ and the gluon fragmentation function $D(x,Q)$ at initial scale $Q_0 \gg\Lambda_{\rm QCD}$ to charged light hadron momentum spectra data by evolving in the Modified Leading Logarithm Approximation. Without additi
Externí odkaz:
http://arxiv.org/abs/hep-ph/0404287
Autor:
Andersen, J. R., Brook, N. H., Dokshitzer, Yu. L., Khoze, V. A., Kittel, W., Ochs, W., Stirling, W. J., Zanderighi, G.
Publikováno v:
J.Phys.G28:2509-2522,2002
We briefly summarise the main results presented at the IPPP Workshop on Multiparticle Production in QCD Jets, held in Durham in December 2001.
Externí odkaz:
http://arxiv.org/abs/hep-ph/0205127
Autor:
Ochs, W., Shimada, T.
We calculate the probability for rapidity gaps in the parton cascade for different approximations within the perturbative QCD and compare the results with recent measurements. The aim is to find out whether the dual connection between the parton and
Externí odkaz:
http://arxiv.org/abs/hep-ph/9706485
Autor:
Khoze, V. A., Ochs, W.
Publikováno v:
Int.J.Mod.Phys.A12:2949-3120,1997
In this review we discuss the analytical perturbative approach, based on perturbative QCD and Local Parton Hadron Duality (LPHD), and its application to multiparticle production in jets in the semisoft region. Analytical formulae are presented for va
Externí odkaz:
http://arxiv.org/abs/hep-ph/9701421