[PDF] Top 20 Percepción de estudiantes de Obstetricia sobre Tecnologías de la Información y Comunicación en el proceso de enseñanza-aprendizaje

... from-b J/ψ which are given in Fig. 1. From these results, several additional results are derived, most notably single differential cross-sections integrated over y and their ratios between 13 TeV and 8 TeV [13]. Both of ... See full document

... whose production is dominated by gluon-gluon ...charm production has been roughly estimated to be at the level of ...the LHCb double charm data seem to be at least partially related to the parton ... See full document

... The selection of the CEP of charmonia pairs [20] requires exactly four tracks, at least three of which are identified as muons. The invariant masses of two unlike-sign pairs of muons is required to be consistent with that ... See full document

... Exclusive production of J / ψ and ψ(2S ) mesons through processes such as the one displayed in ...by LHCb [26] in the dimuon channel. LHCb is very well suited for this type of studies as it has ... See full document

... minosity in proton-proton collisions data at 7 TeV, collecting a sample rich in b mesons and baryons. The data provide a wealth of new measurements that probes of QCD theory predictions. We present recent results in ... See full document

... b production in the defined fiducial region is determined to be (J / from b; pT < 14 GeV / ...b¯b production cross-section at √ s = 8 TeV, (pp → b¯bX) = 298 ± 2 ...(1S) meson in ... See full document

... direct production and feed-down from ψ(2S ) decays and no contribution from .../ψ production, the pre- dictions from single and double parton scattering are expected to be fairly close in magnitude [32], ... See full document

... QCD-motivated models for hadrons predict an assortment of “exotic” hadrons that have structures that are more complex than the traditional quark-parton model [2]. The observation of charmonium- like states has generated ... See full document

... In this article, we would like to give some brief introduction to Operator Production Expansion and Factorization, and Section 3 gives some applications to deduce the deca[r] ... See full document

... Spectroscopy is one of the many fronts in which the LHCb collaboration is actively working. To improve our knowl- edge and understanding on how quarks interact among them and recombine them with others to form ... See full document

... The vertex detector plays the main role in search of secondary vertexes with possible decays of a charm as the distance between a point of interaction and D meson decay point doesn’t exceed 2 mm. We have the ... See full document

... In 2009, the CDF collaboration has reported the evidence for a narrow structure near the J/ψφ thresh- old in the exclusive B ± → J/ψφK ± decay [6, 7]. In 2011, the LHCb collaboration performed a similar search ... See full document

... ALICE, LHCb and ATLAS collaborations have measured inclusive transverse momentum spectra of open charm mesons in proton-proton collisions at √ s = 7 TeV ...the LHCb as well as ATLAS data from wide ... See full document

... Collinear QCD factorization has allowed us to calculate neutrino production of D− mesons in terms of GPDs. Gluon and both chiral-odd and chiral-even quark GPDs contribute to the amplitude for dif- ferent ... See full document

... BaBar and LHCb Collaborations. While all experiments reported a large width, with values consistent with each another, the central values of the mass di ff er largely: (2308 ± 36) MeV (Belle) [32], (2407 ± 41) MeV ... See full document

... charm production very di ffi ...the charmed hadronproduction cross-section with the flux of incoming ...charm production cross-section scales with the mean atomic number of air as compared to the ... See full document

... theoretical point of view the possible difference between transverse and longitudinal cross sections is the result of different distribution of quarks in vector mesons depending on their polarizations. This effect takes ... See full document

... factors uncertainties. Substantial progress would be possible if one could reach better agreement on what QCD predicts for the various meson form factors. Most important is the pion sector be it the γπ + π − or ... See full document

... meson rapidity and a comparison of the double-scattering and γγ fusion contributions at RHIC (left panel) and at LHC (right panel) energies. The double-scattering component dominates over the γγ one. In addition, ... See full document

... Abstract. The meson production and associated excited-baryon-analysis program by the J¨ulich-Athens/GA-Washington/DC Collaboration is presented. The program’s analy- sis is based on a dynamical ... See full document