Results 141 to 150 of about 194,290 (301)
Ecological Applications, Volume 36, Issue 1, January 2026.Abstract Large old trees are widely recognized as ecologically important across forest landscapes and concern regarding the decline of these trees is well documented because of their role in maintaining biodiversity for a broad range of organisms. In response to a growing need to inventory such trees, we developed and present the methodology to map and
Douglas G. Pitt +3 more
wiley +1 more source
European Physical Journal C: Particles and FieldsThe Parton Branching method offers a Monte Carlo solution to the DGLAP evolution equations by incorporating Sudakov form factors. In this approach, the Sudakov form factor can be divided into perturbative and non-perturbative components, with the non ...
M. Mendizabal +3 more
doaj +1 more source
Spin correlations in parton-parton scattering
Nuclear Physics B, 1988 Abstract The sum over the helicities of partons in QCD jet production gives rise to quantum mechanical interference effects, leading to correlations between the azimuthal angles of the branching planes of partons within jet cascades. In this paper, it is shown how to extend previous work on calculating correlations within a jet to the case of parton ...
openaire +1 more source
Skewed parton distributions [PDF]
Nuclear Physics A, 2000 Applications of perturbative QCD to deeply virtual Compton scattering and hard exclusive electroproduction processes require a generalization of usual parton distributions for the case when long-distance information is accumulated in nonforward matrix elements of quark and gluon light-cone operators.
openaire +2 more sources
Nuclear modification of high-p_T hadron spectra in p+A collisions at LHC
, 2012 Multiple parton scatterings in high-energy p+A collisions involve multi-parton correlation inside the projectile and color coherence of multiple jets which will lead to nuclear modification of final hadron spectra relative to that in p+p collisions. Such
Deng, Wei-Tian, Wang, Xin-Nian, Xu, Rong
core +1 more source
A model calculation of double parton distribution functions of the pion
European Physical Journal C: Particles and Fields, 2018 Two-parton correlations in the pion are investigated in terms of double parton distribution functions. A Poincaré covariant light-front framework has been adopted.
Matteo Rinaldi +3 more
doaj +1 more source
Multi-Parton Interactions at the LHC [PDF]
, 2010 We review the recent progress in the theoretical description and experimental observation of multiple parton interactions. Subjects covered include experimental measurements of minimum bias interactions and of the underlying event, models of soft physics
Bartalini, P. +22 more
core +1 more source
b \bar b b\bar b production in proton-nucleus collisions at the LHC
, 2003 A sizable rate of events, with several pairs of $b$-quarks produced contemporarily by multiple parton interactions, may be expected at very high energies as a consequence of the large parton luminosities.
A. Del Fabbro +15 more
core +3 more sources
Intrinsic bottom and its impact on heavy new physics at the LHC
EPJ Web of Conferences, 2016 Heavy quark parton distribution functions (PDFs) play an important role in several Standard Model and New Physics processes. Most analyses rely on the assumption that the charm and bottom PDFs are generated perturbatively by gluon splitting and do not ...
Lyonnet Florian
doaj +1 more source
Parton-Parton Elastic Scattering and Rapidity Gaps at Very High Energies
, 1993 The theory of the perturbative pomeron, due to Lipatov and collaborators, is used to compute the probability of observing parton-parton elastic scattering and rapidity gaps between jets in hadron collisions at very high energies.Comment: 15 ...
Balitsky +15 more
core +2 more sources