JLab Measurement of theHe4Charge Form Factor at Large Momentum Transfers

Autor:	A. Saha, Bogdan Wojtsekhowski, B. Moffit, J. Segal, T. Holmstrom, E. Kuchina, S. Frullani, Douglas Higinbotham, A. J. R. Puckett, Bumsung Lee, H. Yao, F. Garibaldi, R. Subedi, H. J. Lu, G. Lott, M. H. Shabestari, R. Michaels, M. Olson, E. Cisbani, B. Craver, S. Marrone, C. Dutta, A. Kievsky, E. Folts, Pete Markowitz, John Arrington, A. R. Baldwin, B. D. Anderson, R. A. Lindgren, W. M. Zhang, L. Zhu, B. E. Norum, R. Suleiman, A. Shahinyan, J. J. LeRose, J. P. Chen, A. Acha, D. J. Margaziotis, J. Huang, B. Hahn, S. Choi, E. Khrosinkova, P. Solvignon, E. Chudakov, Kalyan Allada, J. O. Hansen, X. Yan, Yingxiao Wang, Ronald Gilman, B. Sawatzky, G. Kumbartzki, G. G. Petratos, G. M. Urciuoli, Z. E. Meziani, A. Camsonne, J. Gomez, Michele Viviani, P. Decowski, X. Zheng, Nikolaos Sparveris, A. Kelleher, Sulkosky, M. Iodice, L. E. Marcucci, X. Jiang, O. Rondon, Xin Qian, D. G. Meekins, A. T. Katramatou
Rok vydání:	2014
Předmět:	Physics Elastic scattering Nuclear reaction Operator (physics) Nuclear Theory Momentum transfer Form factor (quantum field theory) General Physics and Astronomy Observable 7. Clean energy Momentum Nuclear physics Nuclear Experiment Wave function
Zdroj:	Physical Review Letters. 112
ISSN:	1079-7114 0031-9007
Popis:	The electromagnetic (EM) form factors of the heliumisotopes are, along with the deuteron and tritium formfactors, the \observables of choice" [1] for testing thenucleon-meson standard model of the nuclear interac-tion and the associated EM current operator [2]. Theyprovide fundamental information on the internal struc-ture and dynamics of the light nuclei as they are, in asimple picture, convolutions of the ground state wavefunction with the EM form factors of the constituentnucleons. The theoretical calculations for these few-body observables are very sensitive to the model used forthe nuclear EM current operator, especially its meson-exchange-current (MEC) contributions. Relativistic cor-rections and possible admixtures of multi-quark states inthe nuclear wave function might also be relevant [2]. Ad-ditionally, at large momentum transfers, these EM formfactors may o er a unique opportunity to uncover a pos-sible transition in the description of elastic electron scat-tering on few-body nuclear systems, from meson-nucleonto quark-gluon degrees of freedom, as predicted by quark-dimensional scaling [3, 4].Experimentally, the few-body form factors are deter-mined from elastic electron-nucleus scattering studies us-ing high intensity beams, high density targets and large
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::9a93d1534914f2f3d6e27e6859eeea95 https://doi.org/10.1103/physrevlett.112.132503 Zobrazit plný text záznamu