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Using coupled-cluster theory and interactions from chiral effective field theory, we compute overlap functions for transfer and scattering of low-energy protons on the target nucleus 40-Ca. Effects of three-nucleon forces are included…

Nuclear Theory · Physics 2012-08-14 G. Hagen , N. Michel

Scattering power (T = d/dx of mean squared multiple Coulomb scattering (MCS) angle), as used in proton transport theory, is properly viewed as a differential description of the Gaussian approximation to MCS theories such as Moliere's. That…

Medical Physics · Physics 2015-05-13 Bernard Gottschalk

Proton radiotherapy promises accurate dose delivery to a tumor and minimal dose deposition to all other tissues. However, in practice the planned dose distribution may not conform to the actual one due to noisy data and different types of…

Medical Physics · Physics 2018-09-07 Jaroslav Albert , Rudi Labarbe , Edmond Sterpin

For calculation of the single-channel nucleon-nucleon scattering a phase-functions method has been considered. Using a phase-functions method the following phase shifts of a nucleon-nucleon scattering are calculated numerically: nn (1S0-,…

Nuclear Theory · Physics 2016-03-08 V. I. Zhaba

We compute the vector analyzing power (VAP) for the elastic scattering of transversely polarized electrons from protons at low energies using an effective theory of electrons, protons, and photons. We study all contributions through second…

Nuclear Theory · Physics 2009-11-10 L. Diaconescu , M. J. Ramsey-Musolf

We compute the differential and the total cross sections for $pp$ scattering using the QCD pomeron model proposed by Landshoff and Nachtmann. This model is quite dependent on the experimental electromagnetic form factor, and it is not…

High Energy Physics - Phenomenology · Physics 2008-11-26 F. Carvalho , A. A. Natale , C. M. Zanetti

Elastic scattering amplitudes dominated by the Pomeron singularity which obey the principal unitarity bounds at high energies are constructed and analyzed. Confronting the models of double and triple (at $t=0$) Pomeron pole (supplemented by…

High Energy Physics - Phenomenology · Physics 2008-11-26 E. Martynov

Progress in computing various meson-baryon scattering amplitudes is presented on a single ensemble from the Coordinated Lattice Simulations (CLS) consortium with $m_\pi=200$ MeV and $N_f=2+1$ dynamical fermions. The finite-volume L\"uscher…

High Energy Physics - Lattice · Physics 2021-11-16 Colin Morningstar , John Bulava , Andrew D. Hanlon , Ben Hörz , Daniel Mohler , Amy Nicholson , Sarah Skinner , André Walker-Loud

In this work the process of elastic hadron scattering is discussed. In particular, scattering amplitudes for the various Pomeron models are compared. In addition, differential elastic cross section as a function of the scattered proton…

High Energy Physics - Phenomenology · Physics 2017-08-10 P. Erland , R. Staszewski , M. Trzebinski , R. Kycia

In the paper, the results of analysis of elastic scattering and breakup processes in interactions of the $^{11}$Li nucleus with protons are presented. The hybrid model of the microscopic optical potential (OP) is applied. This OP includes…

PROJET is a parton level Monte Carlo program for the calculation of jet cross sections in deeply inelastic electron proton scattering. In its present version it contains the Born level diagrams for the production of (1+1), (2+1) and (3+1)…

High Energy Physics - Phenomenology · Physics 2009-10-28 Dirk Graudenz

In this paper, we provide a generalized framework for Variational Inference-Stochastic Optimal Control by using thenon-extensive Tsallis divergence. By incorporating the deformed exponential function into the optimality likelihood function,…

Machine Learning · Computer Science 2021-04-02 Ziyi Wang , Oswin So , Jason Gibson , Bogdan Vlahov , Manan S. Gandhi , Guan-Horng Liu , Evangelos A. Theodorou

We introduce a variational algorithm to estimate the likelihood of a rare event within a nonequilibrium molecular dynamics simulation through the evaluation of an optimal control force. Optimization of a control force within a chosen basis…

Statistical Mechanics · Physics 2021-01-14 Avishek Das , David T. Limmer

A compact approach based on the folding model is suggested for the determination of the isoscalar and isovector transition strengths of the low-lying ($\Delta S=\Delta T=0$) excitations induced by inelastic proton scattering measured with…

Nuclear Experiment · Physics 2009-11-10 Dao T. Khoa

Beginning with precise data on the ratio of structure functions in deep inelastic scattering (DIS) from $^3$He and $^3$H, collected on the domain $0.19 \leq x_B \leq 0.83$, where $x_B$ is the Bjorken scaling variable, we employ a robust…

High Energy Physics - Phenomenology · Physics 2022-05-27 Zhu-Fang Cui , Fei Gao , Daniele Binosi , Lei Chang , Craig D. Roberts , Sebastian M. Schmidt

Recently, it was noted that absorptive corrections to the electromagnetic form factor in high-energy proton-proton scattering are important for the theoretical interpretation of the $p^\uparrow{p}$ and $p^\uparrow{A}$ analyzing power…

High Energy Physics - Phenomenology · Physics 2024-09-18 Andrei Poblaguev

We propose to study hadron-hadron scattering using lattice QCD in an asymmetric box which allows one to access more non-degenerate low-momentum modes for a given volume. The conventional L\"{u}scher's formula applicable in a symmetric box…

High Energy Physics - Lattice · Physics 2010-10-27 Xin Li , Ying Chen , Guo-Zhan Meng , Xu Feng , Ming Gong , Song He , Gang Li , Chuan Liu , Yu-Bin Liu , Jian-Ping Ma , Xiang-Fei Meng , Yan Shen , Jian-Bo Zhang

We consider the breaking of Galilean invariance due to different lattice cutoff effects in moving frames and a nonlocal smearing parameter which is used in the construction of the nuclear lattice interaction. The dispersion relation and…

Nuclear Theory · Physics 2019-07-03 Ning Li , Serdar Elhatisari , Evgeny Epelbaum , Dean Lee , Bing-Nan Lu , Ulf-G. Meißner

Model independent radiative correction to the recoil proton polarization for the elastic electron-proton scattering is calculated within method of electron structure functions. The explicit expressions for the recoil proton polarization are…

High Energy Physics - Phenomenology · Physics 2009-10-31 A. V. Afanasev , I. Akushevich , N. P. Merenkov

Through the use of perturbation theory, in this work we develop a method which allows for a substantial reduction in the size of the plane-wave basis used in density-functional calculations. This method may be used for both pseudopotentials…

Materials Science · Physics 2016-08-31 D. E. Segall , T. A. Arias
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