Results 31 to 40 of about 1,544,264 (173)

Parton distributions in the shockwave formalism

Journal of High Energy Physics
In this work, we calculate a broad class of parton distributions — including parton distribution functions (PDFs), transverse-momentum-dependent distributions (TMDs), generalized parton distributions (GPDs), generalized transverse-momentum-dependent ...
Shohini Bhattacharya, Chuan-Qi He, Zhong-Bo Kang, Diego Padilla, Jani Penttala   +4 more
doaj   +1 more source

Intra‐Seasonal Crop Management and the Potential Benefit of Seasonal Precipitation Forecasts: Farm‐Level Embedded Risk Analysis in Ethiopia

Journal of Agricultural Economics, Volume 77, Issue 3, Page 928-954, September 2026.
ABSTRACT How large is the potential benefit for farmers from obtaining forecasts of total rainfall in the upcoming season? This critically depends on the local farm system and the crop management actions available to farmers to respond to the forecasts issued. Studies assessing the financial value of seasonal precipitation forecasts have so far focused
Christian Troost, Samuel Elias Kayamo, Livia Rasche, Thomas Berger   +3 more
wiley   +1 more source

Three Decades of Soil N2O Research—Insights and Gaps

Global Change Biology, Volume 32, Issue 8, August 2026.
Progress in N2O Research and Key Breakthroughs and Transitions from 1990 to 2025 across three domains: (A) process understanding, (B) microbial ecology, and (C) modelling of soil N2O emissions. ABSTRACT Nitrous oxide (N2O) is a potent greenhouse gas (GHG) whose atmospheric concentration continues to rise, largely driven by nitrogen (N) inputs to ...
Klaus Butterbach‐Bahl, Laurent Philippot, João Serra, Whendee L. Silver, Stephen Ogle, Diego Abalos   +5 more
wiley   +1 more source

Generalized Parton Distributions [PDF]

, 2000
Applications of perturbative QCD to deeply virtual Compton scattering and hard exclusive electroproduction processes require a generalization of the usual parton distributions for the case when long-distance information is accumulated in non-diagonal ...
Radyushkin, A.
core  

Gluon GTMDs at nonzero skewness and impact parameter dependent parton distributions

European Physical Journal C: Particles and Fields
We investigate the leading twist generalized transverse momentum dependent parton distributions (GTMDs) of the unpolarized and longitudinally polarized gluons in the nucleon.
Chentao Tan, Zhun Lu
doaj   +1 more source

Exploring twist-4 chiral-even GPDs in the light-front quark-diquark model

Nuclear Physics B
In this work, we delve into the realm of quantum chromodynamics (QCD) by calculating twist-4 chiral-even generalized parton distributions (GPDs), within the context of the light-front quark-diquark model (LFQDM), focusing specifically on the intriguing ...
Shubham Sharma, Harleen Dahiya
doaj   +1 more source

Longitudinal and transverse parton momentum distributions for pion and nucleon within relativistic constituent quark models

EPJ Web of Conferences, 2010
Longitudinal and transverse quark momentum distributions for the pion and the nucleon are calculated from quark-hadron vertexes obtained by an investigat ion of electromagnetic form factors within relativistic constituent quark models. The no-helicity
Pasquini B., Frederico T., Pace E., Salmè G.   +3 more
doaj   +1 more source

Generalized parton distributions: confining potential effects within AdS/QCD

European Physical Journal C: Particles and Fields, 2017
Generalized parton distributions are investigated within a holographic approach where the string modes in the fifth dimension describe the nucleon in a bottom–up or AdS/QCD framework.
Marco Traini
doaj   +1 more source

Generalized parton distributions through universal moment parameterization: non-zero skewness case

Journal of High Energy Physics, 2023
We present the first global analysis of generalized parton distributions (GPDs) combing lattice quantum chromodynamics (QCD) calculations and experiment measurements including global parton distribution functions (PDFs), form factors (FFs) and deeply ...
Yuxun Guo, Xiangdong Ji, M. Gabriel Santiago, Kyle Shiells, Jinghong Yang   +4 more
doaj   +1 more source

Simulating soil organic carbon and greenhouse gas emissions in dry regions: A review of the scope and limitations of biogeochemical models

Agronomy Journal, Volume 118, Issue 4, July/August 2026.
Abstract Soil organic carbon (SOC) dynamics and greenhouse gas (GHG) emissions in dry (arid and semi‐arid) agroecosystems are regulated by low and variable moisture, episodic wet–dry cycles, and limited organic inputs. Although process‐based biogeochemical models are widely used to quantify these processes, a comprehensive assessment of their ...
Dotun Arije, Prakriti Bista, Rajan Ghimire   +2 more
wiley   +1 more source