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Статті в журналах з теми "Nucleon axial charge"
Kojo, Toru. "Can the nucleon axial charge be ?" Nuclear Physics A 899 (February 2013): 76–106. http://dx.doi.org/10.1016/j.nuclphysa.2012.12.116.
Повний текст джерелаGAMBERG, LEONARD, and GARY R. GOLDSTEIN. "FLAVOR-SPIN SYMMETRY AND THE TENSOR CHARGE." International Journal of Modern Physics A 18, no. 08 (March 30, 2003): 1297–302. http://dx.doi.org/10.1142/s0217751x03014630.
Повний текст джерелаKirchbach, M., D. O. Riska, and K. Tsushima. "The axial exchange charge operator and the nucleon-nucleon interaction." Nuclear Physics A 542, no. 4 (June 1992): 616–30. http://dx.doi.org/10.1016/0375-9474(92)90260-q.
Повний текст джерелаBirse, Michael C. "The axial charge of a nucleon in matter." Physics Letters B 316, no. 4 (October 1993): 472–75. http://dx.doi.org/10.1016/0370-2693(93)91030-q.
Повний текст джерелаRenner, D. B., R. G. Edwards, G. Fleming, Ph Hägler, J. W. Negele, K. Orginos, A. V. Pochinsky, D. G. Richards, and W. Schroers. "Calculation of the nucleon axial charge in lattice QCD." Journal of Physics: Conference Series 46 (September 1, 2006): 152–56. http://dx.doi.org/10.1088/1742-6596/46/1/021.
Повний текст джерелаHe, Han-Xin, Nader Mobed, and Faqir C. Khanna. "The 1/Nc corrections to static properties of nucleons in the Skyrme model." Canadian Journal of Physics 66, no. 11 (November 1, 1988): 994–96. http://dx.doi.org/10.1139/p88-161.
Повний текст джерелаJang, Yong-Chull, Tanmoy Bhattacharya, Rajan Gupta, Huey-Wen Lin, and Boram Yoon. "Nucleon Axial and Electromagnetic Form Factors." EPJ Web of Conferences 175 (2018): 06033. http://dx.doi.org/10.1051/epjconf/201817506033.
Повний текст джерелаAli Khan, A., M. Göckeler, P. Hägler, T. R. Hemmert, R. Horsley, A. C. Irving, D. Pleiter, et al. "Axial and tensor charge of the nucleon with dynamical fermions." Nuclear Physics B - Proceedings Supplements 140 (March 2005): 408–10. http://dx.doi.org/10.1016/j.nuclphysbps.2004.11.320.
Повний текст джерелаOhta, Shigemi, and Kostas Orginos. "Nucleon axial charge and structure functions with domain wall fermions." Nuclear Physics B - Proceedings Supplements 129-130 (March 2004): 296–98. http://dx.doi.org/10.1016/s0920-5632(03)02561-1.
Повний текст джерелаFRITZSCH, HARALD. "THE NUCLEON: ITS SPIN, AXIAL CHARGE AND THE CHIRAL SYMMETRY." Modern Physics Letters A 05, no. 23 (September 20, 1990): 1815–24. http://dx.doi.org/10.1142/s0217732390002079.
Повний текст джерелаДисертації з теми "Nucleon axial charge"
Pefkou, Dimitra Anastasia. "Calculation of the axial charge of a heavy nucleon in Lattice QCD." Thesis, Massachusetts Institute of Technology, 2016. http://hdl.handle.net/1721.1/111890.
Повний текст джерелаCataloged from PDF version of thesis.
Includes bibliographical references (pages 55-57).
In this thesis, we aim to calculate the non-renormalized axial charge gA of a heavy nucleon made out of quarks at the physical mass of the strange quark. We present the framework of Lattice QCD which makes the calculation of such observables attainable from first principles. The data used for the estimation of gA were obtained on a 243 x64 hypercubic lattice with lattice spacing a ~ 0.12 fm and pion mass m[pi] = 0.450 GeV. Three different source-sink seperations were used, tsink = [12a, 14a, 16a]. For each timeslice seperation signal we perform a correlated x2 fit and obtain the following values for gA: 0.551, 0.564 and 0.556. The unrenormalized value value for gA is extracted taking the limit as tsink --> [infinity] and is shown to be gA = 0.558. We discuss how the accuracy of this result is compromised by the small number of tsink values, by excited state contamination and by the increase of statistical noise with time.
by Dimitra Anastasia Pefkou.
S.B.
Métivet, Thibaut. "Lattice QCD at the physical point : pion-pion scattering and structure of the nucleon." Thesis, Paris 11, 2015. http://www.theses.fr/2015PA112243/document.
Повний текст джерелаThe formalism of Quantum Chromodynamics on the lattice (or Lattice QCD) allows to perform ab-initio non-perturbative studies of strong-interaction driven processes, as it provides both a covariant regularisation of the theory of QCD and a natural framework for numerical computations. In this work, after a review of the main features of QCD and a step-by-step presentation of our discretization of QCD on a lattice, we undertake detailed studies of two problems of hadronic physics: the phenomenon of resonant scattering and the structure of the nucleon. The lattice calculations are performed with the Budapest-Marseille-Wuppertal Collaboration's 2+1-flavour gauge configurations, which give access to a wide range of lattice spacings, volumes and quarks masses, thereby allowing to study the sensibility of our results on these parameters, and to perform a complete continuum extrapolation. These configurations include dynamical quarks, and use a clover-improved Wilson QCD action. To investigate the scattering of particles on the lattice, we set up a Lüscher analysis for the emblematic case of pion-pion scattering in the channel of the rho meson resonance. We analyse our data with a variational generalized eigenvalue method, and give an in-depth calculation of the scattering phase-shifts and the corresponding resonance parameters, with a full control of the systematic errors. Our results provide an important step for lattice studies of scattering states, as they are the first to be performed at the physical pion mass, where one can see the actual decay of the rho into two pions. The obtained rho meson parameters are in good agreement with the experimental values, and consistent with a weak pion mass dependence of the coupling between the rho and two pions. As for our probe of the structure of the nucleon, we present a complete extraction of the electroweak isovector form factors, with a comprehensive study of the electric charge squared radius and of the axial charge. Our analysis also feature data at the physical pion mass, which turns out to be crucial in order to perform safe extrapolations to the physical point, as the chiral perturbation theory predicts violent variations of these quantities near the massless-quarks point. Our calculation includes source and sink projections onto the nucleon state, as well as a combined fit method between the two-point and three-point correlation functions to control the contamination of our data by excited states. Although one would need more data to perform a high-accuracy determination of the nucleon radius and axial charge at the physical point with a relevant estimation of the systematic errors, the results we obtain are in good agreement with the experiment and suggest that the excited-state effects are under control. Our analysis also highlights that gauge configurations ensembles near the physical pion mass and with large volumes must be used in order to extract accurate information about the nucleon structure from lattice calculations
Maurer, Thilo [Verfasser], and Andreas [Akademischer Betreuer] Schäfer. "The QPACE supercomputer, renormalization of dynamical CI fermions, axial charges of excited nucleons / Thilo Maurer. Betreuer: Andreas Schäfer." Regensburg : Universitätsbibliothek Regensburg, 2011. http://d-nb.info/102287229X/34.
Повний текст джерелаHarraud, Pierre-Antoine. "Etude de la structure du nucléon par des calculs de QCD sur réseau avec des fermions de masse twistée." Phd thesis, Grenoble, 2010. http://tel.archives-ouvertes.fr/tel-00546526.
Повний текст джерелаChambers, Alexander John. "Hadron structure and the Feynman-Hellmann theorem in lattice quantum chromodynamics." Thesis, 2018. http://hdl.handle.net/2440/114262.
Повний текст джерелаThesis (Ph.D.) -- University of Adelaide, School of Physical Sciences, 2018
Dragos, Jack. "Improved determination of hadron matrix elements using the variational method." Thesis, 2017. http://hdl.handle.net/2440/106302.
Повний текст джерелаThesis (Ph.D.) -- University of Adelaide, School of Physical Sciences, 2017.
Asavapibhop, Burin. "Study of the axial anomaly in the (gamma-proton going to charged-pion neutral-pion neutron) reaction at low t using the clas and the photon tagger." 2000. https://scholarworks.umass.edu/dissertations/AAI9978469.
Повний текст джерелаЧастини книг з теми "Nucleon axial charge"
Kirchbach, M. "Chiral Symmetry and Axial Charge Sum Rules." In Spin and Isospin in Nuclear Interactions, 181–94. Boston, MA: Springer US, 1991. http://dx.doi.org/10.1007/978-1-4615-3834-9_16.
Повний текст джерелаMilone, Margherita, and Teerin Liewluck. "Progressive Weakness and Rash." In Mayo Clinic Cases in Neuroimmunology, edited by Andrew McKeon, B. Mark Keegan, and W. Oliver Tobin, 154–56. Oxford University Press, 2021. http://dx.doi.org/10.1093/med/9780197583425.003.0050.
Повний текст джерелаТези доповідей конференцій з теми "Nucleon axial charge"
Walker-Loud, Andre, Evan Berkowitz, Arjun S. Gambhir, David Brantley, Pavlos Vranas, Chris Bouchard, M. A. Clark, et al. "Lattice QCD determination of the nucleon axial charge." In The 9th International workshop on Chiral Dynamics. Trieste, Italy: Sissa Medialab, 2020. http://dx.doi.org/10.22323/1.317.0020.
Повний текст джерелаHall, Nathan L., Anthony W. Thomas, and Ross D. Young. "Finite Volume Corrections to the Nucleon Axial Charge." In 8TH CIRCUM‐PAN‐PACIFIC SYMPOSIUM ON HIGH ENERGY SPIN PHYSICS: PacSPIN2011. American Institute of Physics, 2011. http://dx.doi.org/10.1063/1.3667315.
Повний текст джерелаBaer, Oliver. "Nucleon-pion-state contributions in the determination of the nucleon axial charge." In The 33rd International Symposium on Lattice Field Theory. Trieste, Italy: Sissa Medialab, 2016. http://dx.doi.org/10.22323/1.251.0123.
Повний текст джерелаOhta, Shigemi. "Nucleon Axial Charge from Quenched Lattice QCD with Domain Wall Fermions." In INTERSECTIONS OF PARTICLE AND NUCLEAR PHYSICS: 8th Conference CIPANP2003. AIP, 2004. http://dx.doi.org/10.1063/1.1664266.
Повний текст джерелаHua, Jiayu, Georg von Hippel, Benjamin Jaeger, Harvey Meyer, Thomas Rae, and Hartmut Wittig. "Fitting strategies to extract the axial charge of the nucleon from lattice QCD." In 31st International Symposium on Lattice Field Theory LATTICE 2013. Trieste, Italy: Sissa Medialab, 2014. http://dx.doi.org/10.22323/1.187.0446.
Повний текст джерелаOhta, Shigemi. "Nucleon isovector axial charge in 2+1-flavor domain-wall QCD with physical mass." In The 36th Annual International Symposium on Lattice Field Theory. Trieste, Italy: Sissa Medialab, 2019. http://dx.doi.org/10.22323/1.334.0128.
Повний текст джерелаGoeckeler, Meinulf, Arifa Ali Khan, Philipp Haegler, Thomas Hemmert, Roger Horsley, Alan C. Irving, Dirk Pleiter, et al. "The axial charge of the nucleon on the lattice and in chiral perturbation theory." In XXIIIrd International Symposium on Lattice Field Theory. Trieste, Italy: Sissa Medialab, 2005. http://dx.doi.org/10.22323/1.020.0349.
Повний текст джерелаOhta, Shigemi, and Meifeng Lin. "Finite-size scaling in nucleon axial charge from 2+1-flavor DWF lattice QCD." In The 30th International Symposium on Lattice Field Theory. Trieste, Italy: Sissa Medialab, 2012. http://dx.doi.org/10.22323/1.164.0171.
Повний текст джерелаRae, Thomas, Benjamin Jaeger, Stefano Capitani, Michele Della Morte, Dalibor Djukanovic, Georg von Hippel, Bastian Knippschild, Harvey Meyer, and Hartmut Wittig. "A high-statistics study of the nucleon EM form factors, axial charge and quark momentum fraction." In 31st International Symposium on Lattice Field Theory LATTICE 2013. Trieste, Italy: Sissa Medialab, 2014. http://dx.doi.org/10.22323/1.187.0272.
Повний текст джерелаOhta, Shigemi. "Nucleon axial charge in 2+1-flavor dynamical DWF lattice QCD (for RBC and UKQCD Collaborations)." In 31st International Symposium on Lattice Field Theory LATTICE 2013. Trieste, Italy: Sissa Medialab, 2014. http://dx.doi.org/10.22323/1.187.0274.
Повний текст джерела