Measurement of the helicity-dependent total cross-section for the γn → pπ-π0 reaction

J. Ahrens; S. Altieri; J. R.M. Annand; H. J. Arends; R. Beck; M. A. Blackston; C. Bradtke; A. Braghieri; N. d'Hose; H. Dutz; A. Fix; E. Heid; O. Jahn; F. Klein; R. Kondratiev; M. Lang; V. Lisin; M. Martinez-Fabregate; J. C. McGeorge; W. Meyer; A. Panzeri; P. Pedroni; T. Pinelli; D. Protopopescu; G. Reicherz; C. Rohlof; G. Rosner; T. Rostomyan; D. Ryckbosch; G. Tamas; A. Thomas; H. R. Weller

doi:10.1140/epja/i2011-11036-1

Measurement of the helicity-dependent total cross-section for the γn → pπ^-π⁰ reaction

J. Ahrens, S. Altieri, J. R.M. Annand, H. J. Arends, R. Beck, M. A. Blackston, C. Bradtke, A. Braghieri, N. d'Hose, H. Dutz, A. Fix, E. Heid, O. Jahn, F. Klein, R. Kondratiev, M. Lang, V. Lisin, M. Martinez-Fabregate, J. C. McGeorge, W. MeyerA. Panzeri, P. Pedroni, T. Pinelli, D. Protopopescu, G. Reicherz, C. Rohlof, G. Rosner, T. Rostomyan, D. Ryckbosch, G. Tamas, A. Thomas, H. R. Weller

Research output: Contribution to journal › Article › peer-review

3 Citations (Scopus)

Abstract

The helicity dependence of the total cross-section for the γn → pπ^-π⁰ reaction has been measured for the first time at incident photon energies from 450 to 800MeV. The measurement was performed with the large-acceptance detector DAPHNE at the tagged photon beam facility of the MAMI accelerator in Mainz. Both the measured unpolarized and the helicity-dependent observables are not well described by the existing theoretical models.

Original language	English
Article number	36
Pages (from-to)	1-8
Number of pages	8
Journal	European Physical Journal A
Volume	47
Issue number	3
DOIs	https://doi.org/10.1140/epja/i2011-11036-1
Publication status	Published - 2011
Externally published	Yes

ASJC Scopus subject areas

Nuclear and High Energy Physics

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10.1140/epja/i2011-11036-1

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Ahrens, J., Altieri, S., Annand, J. R. M., Arends, H. J., Beck, R., Blackston, M. A., Bradtke, C., Braghieri, A., d'Hose, N., Dutz, H., Fix, A., Heid, E., Jahn, O., Klein, F., Kondratiev, R., Lang, M., Lisin, V., Martinez-Fabregate, M., McGeorge, J. C., ... Weller, H. R. (2011). Measurement of the helicity-dependent total cross-section for the γn → pπ^-π⁰ reaction. European Physical Journal A, 47(3), 1-8. [36]. https://doi.org/10.1140/epja/i2011-11036-1

Ahrens, J, Altieri, S, Annand, JRM, Arends, HJ, Beck, R, Blackston, MA, Bradtke, C, Braghieri, A, d'Hose, N, Dutz, H, Fix, A, Heid, E, Jahn, O, Klein, F, Kondratiev, R, Lang, M, Lisin, V, Martinez-Fabregate, M, McGeorge, JC, Meyer, W, Panzeri, A, Pedroni, P, Pinelli, T, Protopopescu, D, Reicherz, G, Rohlof, C, Rosner, G, Rostomyan, T, Ryckbosch, D, Tamas, G, Thomas, A & Weller, HR 2011, 'Measurement of the helicity-dependent total cross-section for the γn → pπ^-π⁰ reaction', European Physical Journal A, vol. 47, no. 3, 36, pp. 1-8. https://doi.org/10.1140/epja/i2011-11036-1

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abstract = "The helicity dependence of the total cross-section for the γn → pπ-π0 reaction has been measured for the first time at incident photon energies from 450 to 800MeV. The measurement was performed with the large-acceptance detector DAPHNE at the tagged photon beam facility of the MAMI accelerator in Mainz. Both the measured unpolarized and the helicity-dependent observables are not well described by the existing theoretical models.",

author = "J. Ahrens and S. Altieri and Annand, {J. R.M.} and Arends, {H. J.} and R. Beck and Blackston, {M. A.} and C. Bradtke and A. Braghieri and N. d'Hose and H. Dutz and A. Fix and E. Heid and O. Jahn and F. Klein and R. Kondratiev and M. Lang and V. Lisin and M. Martinez-Fabregate and McGeorge, {J. C.} and W. Meyer and A. Panzeri and P. Pedroni and T. Pinelli and D. Protopopescu and G. Reicherz and C. Rohlof and G. Rosner and T. Rostomyan and D. Ryckbosch and G. Tamas and A. Thomas and Weller, {H. R.}",

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doi = "10.1140/epja/i2011-11036-1",

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AU - Ahrens, J.

AU - Altieri, S.

AU - Annand, J. R.M.

AU - Arends, H. J.

AU - Beck, R.

AU - Blackston, M. A.

AU - Bradtke, C.

AU - Braghieri, A.

AU - d'Hose, N.

AU - Dutz, H.

AU - Fix, A.

AU - Heid, E.

AU - Jahn, O.

AU - Klein, F.

AU - Kondratiev, R.

AU - Lang, M.

AU - Lisin, V.

AU - Martinez-Fabregate, M.

AU - McGeorge, J. C.

AU - Meyer, W.

AU - Panzeri, A.

AU - Pedroni, P.

AU - Pinelli, T.

AU - Protopopescu, D.

AU - Reicherz, G.

AU - Rohlof, C.

AU - Rosner, G.

AU - Rostomyan, T.

AU - Ryckbosch, D.

AU - Tamas, G.

AU - Thomas, A.

AU - Weller, H. R.

PY - 2011

Y1 - 2011

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Measurement of the helicity-dependent total cross-section for the γn → pπ^-π⁰ reaction

Abstract

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