Extracting the spin polarizabilities of the proton by measurement of Compton double-polarization observables

A2 Collaboration

doi:10.1103/PhysRevC.102.035205

Extracting the spin polarizabilities of the proton by measurement of Compton double-polarization observables

A2 Collaboration

Racah Institute of Physics

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5 Scopus citations

Abstract

The Compton double-polarization observable ς2z has been measured for the first time in the Δ(1232) resonance region using a circularly polarized photon beam incident on a longitudinally polarized proton target at the Mainz Microtron. This paper reports these results, together with the model-dependent extraction of four proton spin polarizabilities from fits to additional asymmetry data using either a dispersion relation calculation or a baryon chiral perturbation theory calculations with the weighted average of these two fits resulting in γE1E1=-2.87±0.52, γM1M1=2.70±0.43, γE1M2=-0.85±0.72, and γM1E2=2.04±0.43, in units of 10-4fm4.

Original language	American English
Article number	035205
Journal	Physical Review C
Volume	102
Issue number	3
DOIs	https://doi.org/10.1103/PhysRevC.102.035205
State	Published - Sep 2020

Bibliographical note

Funding Information:
The authors wish to acknowledge the excellent support of the accelerator group and operators of MAMI. We also wish to acknowledge and thank B. Pasquini and V. Pascalutsa for the use of their theory codes, as well as H. Grießhammer, J. McGovern, D. Phillips, and M. Vanderhaeghen for their theoretical support. This work was supported by the Natural Sciences and Engineering Research Council of Canada (NSERC, FRN: SAPPJ-2015-00023), the U.S. Department of Energy (Offices of Science and Nuclear Physics, Awards No. DE-FG02-99-ER41110, No. DE-FG02-88ER40415, No. DEFG02-01-ER41194, and No. DE-SC0014323) and National Science Foundation (Grants No. PHY-1039130, No. PHY-1714833, and No. OISE-1358175), Deutsche Forschungsgemeinschaft (SFB443, SFB/TR16, and SFB1044), the European Community-Research Infrastructure Activity under the FP6 “Structuring the European Research Area” program (Hadron Physics, Contract No. RII3-CT-2004-506078), Schweizerischer Nationalfonds (Contract Nos. 200020-156983, 132799, 121781, 117601, and 113511), the U.K. Science and Technology Facilities Council (STFC 57071/1, 50727/1, ST/L00478X/1, and ST/L005824/1), and INFN (Italy).

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© 2020 authors.

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10.1103/PhysRevC.102.035205

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@article{1d499687f5c247d58a1e831c7106435e,

title = "Extracting the spin polarizabilities of the proton by measurement of Compton double-polarization observables",

abstract = "The Compton double-polarization observable ς2z has been measured for the first time in the Δ(1232) resonance region using a circularly polarized photon beam incident on a longitudinally polarized proton target at the Mainz Microtron. This paper reports these results, together with the model-dependent extraction of four proton spin polarizabilities from fits to additional asymmetry data using either a dispersion relation calculation or a baryon chiral perturbation theory calculations with the weighted average of these two fits resulting in γE1E1=-2.87±0.52, γM1M1=2.70±0.43, γE1M2=-0.85±0.72, and γM1E2=2.04±0.43, in units of 10-4fm4.",

author = "{A2 Collaboration} and D. Paudyal and Martel, {P. P.} and Huber, {G. M.} and D. Hornidge and S. Abt and P. Achenbach and P. Adlarson and F. Afzal and Z. Ahmed and Akondi, {C. S.} and Annand, {J. R.M.} and Arends, {H. J.} and M. Bashkanov and R. Beck and M. Biroth and Borisov, {N. S.} and A. Braghieri and Briscoe, {W. J.} and F. Cividini and S. Costanza and C. Collicott and A. Denig and M. Dieterle and Downie, {E. J.} and P. Drexler and Ferretti-Bondy, {M. I.} and S. Gardner and S. Garni and Glazier, {D. I.} and D. Glowa and I. Gorodnov and W. Gradl and S. G{\"u}nther and Gurevich, {G. M.} and D. Hamilton and L. Heijkenskj{\"o}ld and A. K{\"a}ser and Kashevarov, {V. L.} and S. Kay and I. Keshelashvili and R. Kondratiev and M. Korolija and B. Krusche and Lazarev, {A. B.} and Linturi, {J. M.} and V. Lisin and K. Livingston and S. Lutterer and MacGregor, {I. J.D.} and G. Ron",

note = "Funding Information: The authors wish to acknowledge the excellent support of the accelerator group and operators of MAMI. We also wish to acknowledge and thank B. Pasquini and V. Pascalutsa for the use of their theory codes, as well as H. Grie{\ss}hammer, J. McGovern, D. Phillips, and M. Vanderhaeghen for their theoretical support. This work was supported by the Natural Sciences and Engineering Research Council of Canada (NSERC, FRN: SAPPJ-2015-00023), the U.S. Department of Energy (Offices of Science and Nuclear Physics, Awards No. DE-FG02-99-ER41110, No. DE-FG02-88ER40415, No. DEFG02-01-ER41194, and No. DE-SC0014323) and National Science Foundation (Grants No. PHY-1039130, No. PHY-1714833, and No. OISE-1358175), Deutsche Forschungsgemeinschaft (SFB443, SFB/TR16, and SFB1044), the European Community-Research Infrastructure Activity under the FP6 “Structuring the European Research Area” program (Hadron Physics, Contract No. RII3-CT-2004-506078), Schweizerischer Nationalfonds (Contract Nos. 200020-156983, 132799, 121781, 117601, and 113511), the U.K. Science and Technology Facilities Council (STFC 57071/1, 50727/1, ST/L00478X/1, and ST/L005824/1), and INFN (Italy). Publisher Copyright: {\textcopyright} 2020 authors.",

year = "2020",

month = sep,

doi = "10.1103/PhysRevC.102.035205",

language = "American English",

volume = "102",

journal = "Physical Review C",

issn = "2469-9985",

publisher = "American Physical Society",

number = "3",

}

TY - JOUR

T1 - Extracting the spin polarizabilities of the proton by measurement of Compton double-polarization observables

AU - A2 Collaboration

AU - Paudyal, D.

AU - Martel, P. P.

AU - Huber, G. M.

AU - Hornidge, D.

AU - Abt, S.

AU - Achenbach, P.

AU - Adlarson, P.

AU - Afzal, F.

AU - Ahmed, Z.

AU - Akondi, C. S.

AU - Annand, J. R.M.

AU - Arends, H. J.

AU - Bashkanov, M.

AU - Beck, R.

AU - Biroth, M.

AU - Borisov, N. S.

AU - Braghieri, A.

AU - Briscoe, W. J.

AU - Cividini, F.

AU - Costanza, S.

AU - Collicott, C.

AU - Denig, A.

AU - Dieterle, M.

AU - Downie, E. J.

AU - Drexler, P.

AU - Ferretti-Bondy, M. I.

AU - Gardner, S.

AU - Garni, S.

AU - Glazier, D. I.

AU - Glowa, D.

AU - Gorodnov, I.

AU - Gradl, W.

AU - Günther, S.

AU - Gurevich, G. M.

AU - Hamilton, D.

AU - Heijkenskjöld, L.

AU - Käser, A.

AU - Kashevarov, V. L.

AU - Kay, S.

AU - Keshelashvili, I.

AU - Kondratiev, R.

AU - Korolija, M.

AU - Krusche, B.

AU - Lazarev, A. B.

AU - Linturi, J. M.

AU - Lisin, V.

AU - Livingston, K.

AU - Lutterer, S.

AU - MacGregor, I. J.D.

AU - Ron, G.

N1 - Funding Information: The authors wish to acknowledge the excellent support of the accelerator group and operators of MAMI. We also wish to acknowledge and thank B. Pasquini and V. Pascalutsa for the use of their theory codes, as well as H. Grießhammer, J. McGovern, D. Phillips, and M. Vanderhaeghen for their theoretical support. This work was supported by the Natural Sciences and Engineering Research Council of Canada (NSERC, FRN: SAPPJ-2015-00023), the U.S. Department of Energy (Offices of Science and Nuclear Physics, Awards No. DE-FG02-99-ER41110, No. DE-FG02-88ER40415, No. DEFG02-01-ER41194, and No. DE-SC0014323) and National Science Foundation (Grants No. PHY-1039130, No. PHY-1714833, and No. OISE-1358175), Deutsche Forschungsgemeinschaft (SFB443, SFB/TR16, and SFB1044), the European Community-Research Infrastructure Activity under the FP6 “Structuring the European Research Area” program (Hadron Physics, Contract No. RII3-CT-2004-506078), Schweizerischer Nationalfonds (Contract Nos. 200020-156983, 132799, 121781, 117601, and 113511), the U.K. Science and Technology Facilities Council (STFC 57071/1, 50727/1, ST/L00478X/1, and ST/L005824/1), and INFN (Italy). Publisher Copyright: © 2020 authors.

PY - 2020/9

Y1 - 2020/9

N2 - The Compton double-polarization observable ς2z has been measured for the first time in the Δ(1232) resonance region using a circularly polarized photon beam incident on a longitudinally polarized proton target at the Mainz Microtron. This paper reports these results, together with the model-dependent extraction of four proton spin polarizabilities from fits to additional asymmetry data using either a dispersion relation calculation or a baryon chiral perturbation theory calculations with the weighted average of these two fits resulting in γE1E1=-2.87±0.52, γM1M1=2.70±0.43, γE1M2=-0.85±0.72, and γM1E2=2.04±0.43, in units of 10-4fm4.

AB - The Compton double-polarization observable ς2z has been measured for the first time in the Δ(1232) resonance region using a circularly polarized photon beam incident on a longitudinally polarized proton target at the Mainz Microtron. This paper reports these results, together with the model-dependent extraction of four proton spin polarizabilities from fits to additional asymmetry data using either a dispersion relation calculation or a baryon chiral perturbation theory calculations with the weighted average of these two fits resulting in γE1E1=-2.87±0.52, γM1M1=2.70±0.43, γE1M2=-0.85±0.72, and γM1E2=2.04±0.43, in units of 10-4fm4.

UR - http://www.scopus.com/inward/record.url?scp=85092759894&partnerID=8YFLogxK

U2 - 10.1103/PhysRevC.102.035205

DO - 10.1103/PhysRevC.102.035205

M3 - Article

AN - SCOPUS:85092759894

SN - 2469-9985

VL - 102

JO - Physical Review C

JF - Physical Review C

IS - 3

M1 - 035205

ER -

Extracting the spin polarizabilities of the proton by measurement of Compton double-polarization observables

Abstract

Bibliographical note

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