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We present updated NLO predictions for the electroweak t-channel production of heavy quarks at the Tevatron and at the LHC. We consider production of single top and fourth generation t′ starting from both 2 → 2 and 2→3 Born processes. Predictions for tb′ and t′b′ cross sections at NLO are also given for the first time. A thorough study of the theoretical uncertainties coming from parton distributi
Postdoc Contact details Email: ebba [dot] eriksson_ahre [at] tlog [dot] lth [dot] seOrganisation Engineering Logistics Visiting address: Ole Römers väg 1, Room number: 5113 Service point: 9 WebpageEbba Eriksson Ahres profile in Lund University research portalOther affiliations Affiliated researcher Centre for Retail and Logistics (REAL) Publications Displaying of publications. Sorted by year, then
https://www.real.lu.se/en/ebba-eriksson-ahre - 2026-08-17
We introduce the parton cascade Alpaca, which evolves parton ensembles corresponding to single events according to the effective kinetic theory of QCD at high temperature formulated by Arnold, Moore and Yaffe by explicitly simulating elastic scattering, splitting and merging. By taking the ensemble average over many events the phase space density (as evolved by the Boltzmann equation) is recovered
This document describes the first proof-of-concept version of the PYTHIA7 program. PYTHIA7 is a complete re-write of the PYTHIA program in C++. It is mainly intended to be a replacement for the `Lund' family of event generators, but is also a framework with a structure suitable for implementing any event generator model. In this document, the structure of the program is presented both from the use
Sustainability has become a leading concept in development policy and practice. The most recognized definition of sustainable development was coined by the Brundtland Commission in 1987. It provides normative guidelines for a common sustainability agenda and sees responsibility for, and benefits from, this common effort as universal. The agenda addresses stakeholders worldwide and its all-encompas
Both logisticians and tax lawyers design global supply chains – but based on different logics. If they do not align each other’s perspectives, problems might occur in different areas. The purposes of this paper are to 1) illustrate the impact the tax system could have on supply chain design, 2) reflect (from both perspectives) on how the rules function. 3) propose a common communication platform
Ripley's K-function was used to investigate the changes in spatial pattern among trees in a semi-natural mixed deciduous forest in Denmark over 50 years, from 1948 to 2001. Trees larger than 10 cm diameter in breast height (dbh) were mapped at 10-year intervals in 16 blocks within two former compartments. At the start of the observation, trees were found to be regularly distributed at distances le
Recent experimental data have established some of the basic features of multiple interactions in hadron-hadron collisions. The emphasis is therefore now shifting, to one of exploring more detailed aspects. Starting from a brief review of the current situation, a next-generation model is developed, wherein a detailed account is given of correlated flavour, colour, longitudinal and transverse moment
The movement of bark beetles near an attractive pheromone source is described in terms of mathematical models of the diffusion type. To test the models, two release experiments involving 47,000 marked spruce bark beetles [Ips typographus (L.)] were performed. The attractive source was a pheromone trap, surrounded by eight concentric rings with eight passive trap stations on each ring. Captures wer
The reduction of the surface oxide on Rh(111) by H-2 was observed in situ by scanning tunneling microscopy (STM) and high-resolution core level spectroscopy (HRCLS). At room temperature, H-2 does not adsorb on the oxide, only in reduced areas. Reduction starts in very few sites, almost exclusively in stepped areas. One can also initiate the reduction process by deliberately creating defects with t
Due to miserable living conditions and an uneven distribution of land in the rural parts of Brazil there has been a widespread migration into the urban areas during the last 40 years. Greater parts of the population live in the cities and make their living within the informal sector lacking access to important services such as education and health care. In this study we argue for and discuss the n
The role of the humoral immune response in herpes simplex encephalitis (HSE) is largely unknown. The finding that herpes simplex virus type 1 (HSV 1) induced IgG Fc receptor binds to all IgG subclasses except IgG 3 prompted an investigation of anti-HSV activity in IgG subclasses from serum and cerebrospinal fluid (CSF) in ten patients with proven or highly probable HSE by means of a monoclonal ant
Copper from vehicles disc brakes is one main contributor of the total copper found in the environment. Therefore, the U.S. Environmental Protection Agency (EPA) and the automotive industries started the Copper-Free Brake Initiative. The pad friction material is essentially composed of a binder, fillers, reinforcing fibres and frictional additives. Copper and brass fibres are the most commonly used
X-rays allow to non-destructively investigate biological, chemical or physical processes at thenano-scale. Their high penetration depth in matter allows to investigate samples even in-side sample environments, which would be difficult with complementary methods such astransmission electron microscopy (TEM). The microscopy technique ptychography has beenestablished in X-rayX-rays allow to non-destructively investigate biological, chemical or physical processes at the nano-scale. Their high penetration depth in matter allows to investigate samples even inside sample environments, which would be difficult with complementary methods such as transmission electron microscopy (TEM). The microscopy technique ptychography has been established in X-ray imaging in recent year
This prospective, randomised study compares the efficacy of surgery and conservative treatments in patients with cervical radiculopathy. The study group comprised 81 patients with long-lasting cervicaloradiculopathy, with a pain distribution corresponding to a significant nerve root compression, verified by magnetic resonance imaging or computed tomographic myelography. The patients were randomly
Slide 1 OCCUPATIONAL HEAT STRESS & CLIMATE CHANGE – CAUSE FOR A SILENT EPIDEMIC IN INDIA? Dr. Vidhya Venugopal Professor & Head (Industrial Hygiene Services) Dept of Environmental Health Engineering Sri Ramachandra University, Chennai WHO ARE WE? • Affiliations – WHO-CC (Occupational and Environmental Health) – ICMR CAR-Air Pollution, – ILO Centre for OSH Training, – GAIL Centre for Air Pollution
https://www.pi.lu.se/sites/pi.lu.se/files/heat_stress_implications_indian_context_20.05.2015_0.pdf - 2026-08-18
As eutrophication of lakes and oceans is increasing, regulations regarding phosphorus effluents becomes stricter. Consequently, the majority of Sweden’s wastewater treatment plants employs some method for phosphorus removal. Increased efforts for sustainable purification methods has also led to phosphorus removal by chemical means starting to be replaced by biological phosphorus removal. A common
