Search results for "Jet"
showing 10 items of 4711 documents
Intercultural integration in the university context of Cuba: psychosocial intervention program for its promotion
2022
La subjetividad es un factor mediador de la producción y reproducción de la contradicción integración - exclusión en el contacto intercultural. El presente estudio tuvo como objetivo proponer un programa de intervención psicosocial, para la promoción de la integración intercultural en la Universidad Central "Marta Abreu" de Las Villas, desde un enfoque histórico-cultural de las mediaciones por la subjetividad. La investigación se adscribió al modelo de investigación interventiva y a un enfoque cualitativo constructivo interpretativo. En este marco, se realizó una sistematización de experiencias y se propuso un programa de intervención psicosocial. El programa para la promoción de la integra…
A poincar�-bendixson theorem for analytic families of vector fields
1995
We provide a characterization of the limit periodic sets for analytic families of vector fields under the hypothesis that the first jet is non-vanishing at any singular point. Also, applying the family desingularization method, we reduce the complexity of some of these sets.
Los bienes comunes como aproximación materialista al problema del bien común: una réplica a Ermanno Vitale
2021
Este artículo pretende ser una réplica a alguno de los planteamientos críticos que ha desarrollado Ermanno Vitale contra las teorías de los bienes comunes, especialmente contra las teorías benecomunistas que han florecido en el debate político y académico italiano. En particular, pretende responder a una conferencia pronunciada por el filósofo italiano en diciembre de 2020 –cuyo texto se reproduce en este mismo número de la revista–, en la que propuso rechazar las doctrinas de los comunes, en favor de la clásica noción del bien común. Aquí se sostendrá que, en realidad, las teorías de los comunes constituyen la única estrategia interesante para replantear el concepto de bien común en la act…
"Table 1" of "Identified particles in quark and gluon jets."
1997
Y events.
"Table 2" of "Identified particles in quark and gluon jets."
1997
Mercedes events.
Determination of the strong coupling constant from the inclusive jet cross section inpp¯collisions ats=1.96 TeV
2009
We determine the strong coupling constant alpha(s) and its energy dependence from the p(T) dependence of the inclusive jet cross section in pp collisions at s=1.96 TeV. The strong coupling constant is determined over the transverse momentum range 50 < p(T)< 145 GeV. Using perturbative QCD calculations to order O(alpha(3)(s)) combined with O(alpha(4)(s)) contributions from threshold corrections, we obtain alpha(s)(M-Z)=0.1161(-0.0048)(+0.0041). This is the most precise result obtained at a hadron-hadron collider.
An experimental study of γγ → hadrons at LEP
1993
An analysis of γγ interactions has been performed using untagged hadronic data obtained by the ALEPH detector at LEP. The data show at low transverse momentum (pt) are well reproduced by a model based on the vector meson dominance mechinism (VDM). At high pt thrust the presence of hard scattering processes is demonstrated. This component is well described in shape and normalization by a QCD calculation.
Azimuthal anisotropy of charged jet production in sNN=2.76 TeV Pb–Pb collisions
2016
We present measurements of the azimuthal dependence of charged jet production in central and semicentral √sNN = 2.76 TeV Pb–Pb collisions with respect to the second harmonic event plane, quantified as vch jet 2 . Jet finding is performed employing the anti-kT algorithm with a resolution parameter R = 0.2 using charged tracks from the ALICE tracking system. The contribution of the azimuthal anisotropy of the underlying event is taken into account event-by-event. The remaining (statistical) region-to-region fluctuations are removed on an ensemble basis by unfolding the jet spectra for different event plane orientations independently. Significant non-zero vch jet 2 is observed in semi-central …
Measurement of differential Z/γ∗+jet+X cross sections in pp¯ collisions at s=1.96 TeV
2008
We present new measurements of differential cross sections for Z/gamma*(->mumu)+jet+X production in a 1 fb-1 data sample collected with the D0 detector in proton anti-proton collisions at sqrt{s}=1.96 TeV. Results include the first measurements differential in the Z/gamma* transverse momentum and rapidity, as well as new measurements differential in the leading jet transverse momentum and rapidity. Next-to-leading order perturbative QCD predictions are compared to the measurements, and reasonable agreement is observed, except in the region of low Z/gamma* transverse momentum. Predictions from two event generators based on matrix elements and parton showers, and one pure parton shower event …
Factorization and N3LLp+NNLO predictions for the Higgs cross section with a jet veto
2013
We have recently derived a factorization formula for the Higgs-boson production cross section in the presence of a jet veto, which allows for a systematic resummation of large Sudakov logarithms of the form alpha_s^n ln^m(p_T^veto/m_H), along with the large virtual corrections known to affect also the total cross section. Here we determine the ingredients entering this formula at two-loop accuracy. Specifically, we compute the dependence on the jet-radius parameter R, which is encoded in the two-loop coefficient of the collinear anomaly, by means of a direct, fully analytic calculation in the framework of soft-collinear effective theory. We confirm the result obtained by Banfi et al. from a…