New Insight in the Q2 Dependence of Proton Generalized Polarizabilities

被引：10

作者：

Bericic, J. ^{[1
]}

Correa, L. ^{[2
,3
]}

Benali, M. ^{[2
]}

Achenbach, P. ^{[3
]}

Gayoso, C. Ayerbe ^{[3
,11
]}

Bernauer, J. C. ^{[4
,5
]}

Blomberg, A. ^{[6
]}

Boehm, R. ^{[3
]}

Bosnar, D. ^{[7
]}

Debenjak, L. ^{[1
]}

Denig, A. ^{[3
]}

Distler, M. O. ^{[3
]}

Downie, E. J. ^{[8
]}

Esser, A. ^{[3
]}

Fonvieille, H. ^{[2
]}

Friscic, I ^{[9
]}

Kegel, S. ^{[3
]}

Kohl, Y. ^{[3
]}

Makek, M. ^{[7
]}

Merkel, H. ^{[3
]}

Middleton, D. G. ^{[3
]}

Mihovilovic, M. ^{[1
,3
]}

Mueller, U. ^{[3
]}

Nungesser, L. ^{[3
]}

Paolone, M. ^{[6
]}

Pochodzalla, J. ^{[3
]}

Majos, S. Sanchez ^{[3
]}

Schlimme, B. S. ^{[3
]}

Schoth, M. ^{[3
]}

Schulz, F. ^{[3
]}

Sfienti, C. ^{[3
]}

Sirca, S. ^{[1
,10
]}

Sparveris, N. ^{[6
]}

Stajner, S. ^{[1
]}

Thiel, M. ^{[3
]}

Tyukin, A. ^{[3
]}

Weber, A. ^{[3
]}

Weinriefer, M. ^{[3
]}

机构：

[1] Jozef Stefan Inst, SI-1000 Ljubljana, Slovenia

[2] Univ Clermont Auvergne, CNRS, IN2P3, LPC, F-63000 Clermont Ferrand, France

[3] Johannes Gutenberg Univ Mainz, Inst Kernphys, D-55099 Mainz, Germany

[4] SUNY Stony Brook, Dept Phys & Astron, Stony Brook, NY 11794 USA

[5] Brookhaven Natl Lab, RIKEN BNL Res Ctr, Upton, NY 11973 USA

[6] Temple Univ, Philadelphia, PA 19122 USA

[7] Univ Zagreb, Fac Sci, Dept Phys, Zagreb 10000, Croatia

[8] George Washington Univ, Dept Phys, Inst Nucl Studies, Washington, DC 20052 USA

[9] MIT, Lab Nucl Sci, 77 Massachusetts Ave, Cambridge, MA 02139 USA

[10] Univ Ljubljana, Fac Math & Phys, SI-1000 Ljubljana, Slovenia

[11] Coll William & Mary, Williamsburg, VA 23185 USA

来源：

PHYSICAL REVIEW LETTERS | 2019年 / 123卷 / 19期

关键词：

VIRTUAL COMPTON-SCATTERING;

D O I：

10.1103/PhysRevLett.123.192302

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Virtual Compton scattering on the proton has been investigated at three yet unexplored values of the four-momentum transfer Q(2): 0.10, 0.20, and 0.45 GeV2, at the Mainz Microtron. Fits performed using either the low-energy theorem or dispersion relations allowed the extraction of the structure functions P-LL - P-TT/epsilon and P-LT, as well as the electric and magnetic generalized polarizabilities alpha(E1)(Q(2)) and beta(M1)(Q(2)). These new results show a smooth and rapid falloff of alpha(E1)(Q(2)), in contrast to previous measurements at Q(2) = 0.33 GeV2, and provide for the first time a precise mapping of beta(M1)(Q(2)) in the low-Q(2) region.

引用

页数：5

共 27 条

[1] GENERALIZED NUCLEAR POLARIZABILITIES IN (E, E' GAMMA) COINCIDENCE EXPERIMENTS [J].

ARENHOVEL, H ;

DRECHSEL, D .

NUCLEAR PHYSICS A, 1974, A233 (01) :153-163

[2]

Benali M., 2016, THESIS

[3]

Bensafa IK, 2007, EUR PHYS J A, V32, P69, DOI 10.1141/epja/i2006-10277-3

[4]

Bericic J., 2015, THESIS

[5] Virtual Compton scattering measurements in the nucleon resonance region [J].

Blomberg, A. ;

Atac, H. ;

Sparveris, N. ;

Paolone, M. ;

Achenbach, P. ;

Benali, M. ;

Bericic, J. ;

Boehm, R. ;

Correa, L. ;

Distler, M. O. ;

Esser, A. ;

Flay, D. ;

Fonvieille, H. ;

Friscic, I ;

Kohl, Y. ;

Merkel, H. ;

Mueller, U. ;

Meziani, Z. E. ;

Mihovilovic, M. ;

Pochodzalla, J. ;

Polychronopoulou, A. ;

Pasquini, B. ;

Schoth, M. ;

Schulz, F. ;

Schlimme, S. ;

Sfienti, C. ;

Sirca, S. ;

Weber, A. .

EUROPEAN PHYSICAL JOURNAL A, 2019, 55 (10)

[6] The three-spectrometer facility at the Mainz microtron MAMI [J].

Blomqvist, KI ;

Boeglin, WU ;

Bohm, R ;

Distler, M ;

Edelhoff, R ;

Friedrich, J ;

Geiges, R ;

Jennewein, P ;

Kahrau, M ;

Korn, M ;

Kramer, H ;

Krygier, KW ;

Kunde, V ;

Liesenfeld, A ;

Merkel, H ;

Merle, K ;

Muller, U ;

Neuhausen, R ;

Offermann, EAJM ;

Pospischil, T ;

Richter, AW ;

Rosner, G ;

Sauer, P ;

Schardt, S ;

Schmieden, H ;

Wagner, A ;

Walcher, T ;

Wolf, S .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 1998, 403 (2-3) :263-301

[7] Measurements of the generalized electric and magnetic polarizabilities of the proton at low Q2 using the virtual-compton-scattering reaction [J].

Bourgeois, P. ;

Sato, Y. ;

Shaw, J. ;

Alarcon, R. ;

Bernstein, A. M. ;

Bertozzi, W. ;

Botto, T. ;

Calarco, J. ;

Casagrande, F. ;

Distler, M. O. ;

Dow, K. ;

Farkondeh, M. ;

Georgakopoulos, S. ;

Gilad, S. ;

Hicks, R. ;

Holtrop, M. ;

Hotta, A. ;

Jiang, X. ;

Karabarbounis, A. ;

Kirkpatrick, J. ;

Kowalski, S. ;

Milner, R. ;

Miskimen, R. ;

Nakagawa, I. ;

Papanicolas, C. N. ;

Sarty, A. J. ;

Sirca, S. ;

Six, E. ;

Sparveris, N. F. ;

Stave, S. ;

Stiliaris, E. ;

Tamae, T. ;

Tsentalovich, G. ;

Tschalaer, C. ;

Turchinetz, W. ;

Zhou, Z. -L. ;

Zwart, T. .

PHYSICAL REVIEW LETTERS, 2006, 97 (21)

[8] Measurements of the generalized electric and magnetic polarizabilities of the proton at low Q2 using the virtual Compton scattering reaction [J].

Bourgeois, P. ;

Sato, Y. ;

Shaw, J. ;

Alarcon, R. ;

Bernstein, A. M. ;

Bertozzi, W. ;

Botto, T. ;

Calarco, J. ;

Casagrande, F. ;

Distler, M. O. ;

Dow, K. ;

Farkondeh, M. ;

Georgakopoulos, S. ;

Gilad, S. ;

Hicks, R. ;

Holtrop, M. ;

Hotta, A. ;

Jiang, X. ;

Karabarbounis, A. ;

Kirkpatrick, J. ;

Kowalski, S. ;

Milner, R. ;

Miskimen, R. ;

Nakagawa, I. ;

Papanicolas, C. N. ;

Sarty, A. J. ;

Sirca, S. ;

Six, E. ;

Sparveris, N. F. ;

Stave, S. ;

Stiliaris, E. ;

Tamae, T. ;

Tsentalovich, G. ;

Tschalaer, C. ;

Turchinetz, W. ;

Zhou, Z. -L. ;

Zwart, T. .

PHYSICAL REVIEW C, 2011, 84 (03)

[9]

Correa L, 2016, THESIS

[10] Virtual Compton Scattering at MAMI [J].

d'Hose, N. .

EUROPEAN PHYSICAL JOURNAL A, 2006, 28 (Suppl 1) :117-127

← 1 2 3 →