6,017 research outputs found
Black hole solutions of dimensionally reduced Einstein-Gauss-Bonnet gravity with a cosmological constant
We study the phase space of the spherically symmetric solutions of the system
obtained from the dimensional reduction of the six-dimensional
Einstein-Gauss-Bonnet action with a cosmological constant. We show that all the
physical solutions have anti-de Sitter asymptotic behavior.Comment: 13 pages, plain Te
Phenomenology of Sivers Effect with TMD Evolution
Following the TMD evolution scheme recently proposed for the unpolarized and
the Sivers distribution function, we propose a simple strategy to take into
account this TMD Q^2 dependence in our phenomenological extraction of the
Sivers function from SIDIS data. New results are presented and possible future
applications are discussed.Comment: Contribution to the Proceedings of the XX International Workshop on
Deep-Inelastic Scattering and related subjects (DIS2012), 26-30 March 2012,
Bonn, Germany. One figure correcte
Relevansi Peran Gender dan Kontribusi Ekonomi Perempuan untuk Mencapai Falah dalam Rumah Tangga
Talking about economic actors, it can be said that everyone will do economic activities. Nothing limitations on men and women, all doing economic activity. But not in all economic sectors women and men experience equality, both in opportunity and outcome of development. There is always and there is a gap in it. Just as there is in an economic household there will always be a gender gap. But the end of economic activity undertaken by economic households is to achieve prosperity or falah. Based on this it will be seen that there is a relationship or relevance between gender and also economic contribution in terms of reaching falah for household economic
Pemikiran Tokoh Ekonomi Muslim: Imam Al-Syatibi
Ekonomi Islam sebagai ekonomi didasarkan atas sumber hukum Islam; Al-Qur'an dan Al-Hadits.Keadaan ini menjadikan ekonomi Islam mempunyai karakter sendiri dalam definisi, prinsip, sistem, aturan dan praktek.Melalui USAha untuk menafsirkan Al-Qur'an dan Al-Hadits ini yang menjadikan ekonomi Islam berbeda dengan ekonomi konvensional.Di samping itu, ekonomi Islam bisa berarti suatu ilmu yang dasar hukumnya berbeda dengan ekonomi konvensional.Dari sumber hukum ini yang menyebabkan ilmu ekonomi ini disebut “ekonomi Islam”. Banyak ekonom muslim yang mendefinisikan dan mengeksplor ruang lingkup ekonomi Islam, diantaranya adalah Al-Syatibi. Al-Syatibi mempunyai pemikiran sendiri mengenai ekonomi Islam dan mempunyai konsep sendiri tentang ekonomi Islam. Menurutnya dalam ekonomi Islam itu terdapat maqashid syariah yang terdiri dari dharuriyat, hajjiyat dan tahsiniyat. Selain itu Al-Syatibi juga mempunyai konsep sendiri mengenai objek kepemilikan dan pajak.
 
Transverse single-spin asymmetries in proton-proton collisions at the AFTER@LHC experiment in a TMD factorisation scheme
The inclusive large- production of a single pion, jet or direct photon,
and Drell-Yan processes, are considered for proton-proton collisions in the
kinematical range expected for the fixed-target experiment AFTER, proposed at
LHC. For all these processes, predictions are given for the transverse
single-spin asymmetry, , computed according to a Generalised Parton Model
previously discussed in the literature and based on TMD factorisation.
Comparisons with the results of a collinear twist-3 approach, recently
presented, are made and discussed.Comment: RevTex4, 12 pages, 36 eps figures. V2: Few paragraphs and comments
added. Several references added. Results unchanged. Matches the published
versio
Partonic Transverse Motion in Unpolarized Semi-Inclusive Deep Inelastic Scattering
We analyse the role of partonic transverse motion in unpolarized
Semi-Inclusive Deep Inelastic Scattering (SIDIS) processes. Imposing
appropriate kinematical conditions, we find some constraints which fix an upper
limit to the range of allowed kt values and lead to interesting results,
particularly for some observables like the azimuthal modulation of
the unpolarized SIDIS cross section and the average transverse momentum of the
final, detected hadron.Comment: To appear in the Proceedings of the XIX International Workshop on
Deep-Inelastic Scattering and Related Subjects (DIS 2011), April 11-15, 2011,
Newport News, VA US
Constraints on Gluon Sivers Distribution from RHIC Results
We consider the recent RHIC data on the transverse single spin asymmetry
(SSA) A_N, measured in p(transv. polarized) p --> pion X processes at
mid-rapidity by the PHENIX Collaboration. We analyze this experimental
information within a hard scattering approach based on a generalized QCD
factorization scheme, with unintegrated, transverse momentum dependent (TMD),
parton distribution and fragmentation functions. In this kinematical region,
only the gluon Sivers effect could give a large contribution to A_N; its
vanishing value is thus used to give approximate upper limits on the gluon
Sivers function (GSF). Additional constraints from the Burkardt sum rule for
the Sivers distributions are also discussed.Comment: LaTeX 2e, 4 pages, 2 ps figures, uses aipproc.cls. Talk delivered by
U. D'Alesio at the "17th International Spin Physics Symposium", SPIN2006,
October 2-7, 2006, Kyoto, Japa
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