Results 61 to 70 of about 9,602,604 (312)

Fermionic greybody factors of two and five-dimensional dilatonic black holes [PDF]

open access: yes, 2014
We study fermionic perturbations in the background of a two and five-dimensional dilatonic black holes. Then, we compute the reflection and transmission coefficients and the absorption cross section for fermionic fields, and we show numerically that the ...
Becar, Ramón   +2 more
core   +2 more sources

Sparse Signals in the Cross‐Section of Returns

open access: yesJournal of Finance, 2018
This paper uses a penalized regression known as the LASSO to identify rare, short-lived, “sparse” signals in the cross-section of returns. The LASSO boosts out-of-sample predictability in one-minute returns by 23% relative to OLS regressions. This out-of-
Alexander M Chinco   +2 more
semanticscholar   +1 more source

Total top-quark pair-production cross section at hadron colliders through O(αS(4)). [PDF]

open access: yesPhysical Review Letters, 2013
We compute the next-to-next-to-leading order (NNLO) quantum chromodynamics (QCD) correction to the total cross section for the reaction gg → tt + X. Together with the partonic channels we computed previously, the result derived in this Letter completes ...
M. Czakon, P. Fiedler, A. Mitov
semanticscholar   +1 more source

Interventions to improve referrals from primary care to outpatient specialist services for chronic conditions: a systematic review and framework synthesis update

open access: yesSystematic Reviews
Background Prior systematic reviews highlight that accessing specialist healthcare to treat chronic conditions can be obstructed by variations in referral rates, inappropriate referrals, and poor communication.
Layla Bolton Saghdaoui   +6 more
doaj   +1 more source

242Pu absolute neutron-capture cross section measurement

open access: yesEPJ Web of Conferences, 2017
The absolute neutron-capture cross section of 242Pu was measured at the Los Alamos Neutron Science Center using the Detector for Advanced Neutron-Capture Experiments array along with a compact parallel-plate avalanche counter for fission-fragment ...
Buckner M.Q.   +11 more
doaj   +1 more source

Ultrahigh-Energy Neutrino-Nucleon Cross Sections and Perturbative Unitarity [PDF]

open access: yes, 2001
Unitarity relates the total cross section for neutrino-nucleon scattering to the neutrino-nucleon forward scattering amplitude. Assuming the validity of the perturbative expansion of the forward amplitude in the {\em weak} coupling constant, we derive a ...
Abt   +37 more
core   +2 more sources

‘They Need to Hear You Say It’: Healthcare Professionals’ Perspectives on Barriers and Enablers to End‐of‐Life Discussions With Adolescents and Young Adults With Cancer

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT End‐of‐life conversations with adolescents and young adults (AYAs) with cancer rarely occur without the guidance of healthcare professionals. As a part of the ‘Difficult Discussions’ study, focused on palliative care and advance care planning discussions with AYAs with cancer, we investigated the factors that healthcare professionals identify ...
Justine Lee   +9 more
wiley   +1 more source

Investigation of elastic scattering cross-sections of electron with neon atoms

open access: yesChemical Physics Impact
In the present study, Integral [QI(E)], Momentum transfer [QM(E)] and Total [QT(E)] cross-sections have been successfully determined for the elastic scattering of electrons with Neon (Ne) atoms in intermediate incident energy range (100 – 500 eV).
Sanjeev Kumar   +3 more
doaj   +1 more source

Simultaneous Projectile-Target Excitation in Heavy Ion Collisions

open access: yes, 1994
We calculate the lowest-order contribution to the cross section for simultaneous excitation of projectile and target nuclei in relativistic heavy ion collisions.
C. J. Benesh   +10 more
core   +1 more source

Towards the high-accuracy determination of the 238U fission cross section at the threshold region at CERN - N-TOF [PDF]

open access: yes, 2015
The 238U fission cross section is an international standard beyond 2 MeV where the fission plateau starts. However, due to its importance in fission reactors, this cross-section should be very accurately known also in the threshold region below 2 MeV ...
A. Couture   +182 more
core   +5 more sources

Home - About - Disclaimer - Privacy