Elastic scattering of low energy pions by nuclei and the in-medium isovector πn amplitude

E. Friedman; M. Bauer; J. Breitschopf; H. Clement; H. Denz; E. Doroshkevich; A. Erhardt; G. J. Hofman; S. Kritchman; R. Meier; G. J. Wagner; G. Yaari

doi:10.1063/1.2220292

Elastic scattering of low energy pions by nuclei and the in-medium isovector πn amplitude

E. Friedman, M. Bauer, J. Breitschopf, H. Clement, H. Denz, E. Doroshkevich, A. Erhardt, G. J. Hofman, S. Kritchman, R. Meier, G. J. Wagner, G. Yaari

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

Abstract

Measurements of elastic scattering of 21.5 MeV π^± by Si, Ca, Ni and Zr were made using a single arm magnetic spectrometer and absolute calibration was made by parallel measurements of Coulomb scattering of muons. Optical model fits to the data reveal the 'anomalous' s-wave repulsion known from pionic atoms. Introducing a chiral-motivated density dependence of the isovector scattering amplitude, and considering the energy dependence of the free πN interaction greatly improve fits to the data and remove the 'anomaly'.

Original language	English
Title of host publication	PARTICLES AND NUCLEI
Subtitle of host publication	Seventeenth Internatinal Conference on Particles and Nuclei
Pages	437-439
Number of pages	3
DOIs	https://doi.org/10.1063/1.2220292
State	Published - 2006
Externally published	Yes
Event	PARTICLES AND NUCLEI: Seventeenth Internatinal Conference on Particles and Nuclei - Santa Fe, NM, United States Duration: 23 Oct 2005 → 30 Oct 2005

Publication series

Name	AIP Conference Proceedings
Volume	842
ISSN (Print)	0094-243X
ISSN (Electronic)	1551-7616

Conference

Conference	PARTICLES AND NUCLEI: Seventeenth Internatinal Conference on Particles and Nuclei
Country/Territory	United States
City	Santa Fe, NM
Period	23/10/05 → 30/10/05

Keywords

In-medium enhancement
Optical model analysis
Pion elastic scattering
S-wave anomaly

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10.1063/1.2220292

Cite this

Friedman, E., Bauer, M., Breitschopf, J., Clement, H., Denz, H., Doroshkevich, E., Erhardt, A., Hofman, G. J., Kritchman, S., Meier, R., Wagner, G. J., & Yaari, G. (2006). Elastic scattering of low energy pions by nuclei and the in-medium isovector πn amplitude. In PARTICLES AND NUCLEI: Seventeenth Internatinal Conference on Particles and Nuclei (pp. 437-439). (AIP Conference Proceedings; Vol. 842). https://doi.org/10.1063/1.2220292

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title = "Elastic scattering of low energy pions by nuclei and the in-medium isovector πn amplitude",

abstract = "Measurements of elastic scattering of 21.5 MeV π± by Si, Ca, Ni and Zr were made using a single arm magnetic spectrometer and absolute calibration was made by parallel measurements of Coulomb scattering of muons. Optical model fits to the data reveal the 'anomalous' s-wave repulsion known from pionic atoms. Introducing a chiral-motivated density dependence of the isovector scattering amplitude, and considering the energy dependence of the free πN interaction greatly improve fits to the data and remove the 'anomaly'.",

keywords = "In-medium enhancement, Optical model analysis, Pion elastic scattering, S-wave anomaly",

author = "E. Friedman and M. Bauer and J. Breitschopf and H. Clement and H. Denz and E. Doroshkevich and A. Erhardt and Hofman, {G. J.} and S. Kritchman and R. Meier and Wagner, {G. J.} and G. Yaari",

year = "2006",

doi = "10.1063/1.2220292",

language = "אנגלית",

isbn = "0735403384",

series = "AIP Conference Proceedings",

pages = "437--439",

booktitle = "PARTICLES AND NUCLEI",

note = "PARTICLES AND NUCLEI: Seventeenth Internatinal Conference on Particles and Nuclei ; Conference date: 23-10-2005 Through 30-10-2005",

}

Friedman, E, Bauer, M, Breitschopf, J, Clement, H, Denz, H, Doroshkevich, E, Erhardt, A, Hofman, GJ, Kritchman, S, Meier, R, Wagner, GJ & Yaari, G 2006, Elastic scattering of low energy pions by nuclei and the in-medium isovector πn amplitude. in PARTICLES AND NUCLEI: Seventeenth Internatinal Conference on Particles and Nuclei. AIP Conference Proceedings, vol. 842, pp. 437-439, PARTICLES AND NUCLEI: Seventeenth Internatinal Conference on Particles and Nuclei, Santa Fe, NM, United States, 23/10/05. https://doi.org/10.1063/1.2220292

Elastic scattering of low energy pions by nuclei and the in-medium isovector πn amplitude. / Friedman, E.; Bauer, M.; Breitschopf, J. et al.
PARTICLES AND NUCLEI: Seventeenth Internatinal Conference on Particles and Nuclei. 2006. p. 437-439 (AIP Conference Proceedings; Vol. 842).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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T1 - Elastic scattering of low energy pions by nuclei and the in-medium isovector πn amplitude

AU - Friedman, E.

AU - Bauer, M.

AU - Breitschopf, J.

AU - Clement, H.

AU - Denz, H.

AU - Doroshkevich, E.

AU - Erhardt, A.

AU - Hofman, G. J.

AU - Kritchman, S.

AU - Meier, R.

AU - Wagner, G. J.

AU - Yaari, G.

PY - 2006

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N2 - Measurements of elastic scattering of 21.5 MeV π± by Si, Ca, Ni and Zr were made using a single arm magnetic spectrometer and absolute calibration was made by parallel measurements of Coulomb scattering of muons. Optical model fits to the data reveal the 'anomalous' s-wave repulsion known from pionic atoms. Introducing a chiral-motivated density dependence of the isovector scattering amplitude, and considering the energy dependence of the free πN interaction greatly improve fits to the data and remove the 'anomaly'.

AB - Measurements of elastic scattering of 21.5 MeV π± by Si, Ca, Ni and Zr were made using a single arm magnetic spectrometer and absolute calibration was made by parallel measurements of Coulomb scattering of muons. Optical model fits to the data reveal the 'anomalous' s-wave repulsion known from pionic atoms. Introducing a chiral-motivated density dependence of the isovector scattering amplitude, and considering the energy dependence of the free πN interaction greatly improve fits to the data and remove the 'anomaly'.

KW - In-medium enhancement

KW - Optical model analysis

KW - Pion elastic scattering

KW - S-wave anomaly

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Elastic scattering of low energy pions by nuclei and the in-medium isovector πn amplitude

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