π-p interactions at 720 MeV
Summary The interactions of 720 MeV negative pions with protons were investigated using pictures from the 35 cm Saclay hydrogen bubble chamber. Partial cross-sections were determined with the following results: σ(elastic)=13.2±0.5) mb, σ($ π^{−} $$ pπ^{0} $)=(5.25±0.30) mb, σ($ π^{−} $$ π^{+} $n)=()...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
Van de Walle, R. T. [verfasserIn] |
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| Format: |
Artikel |
|---|---|
| Sprache: |
Englisch |
| Erschienen: |
1968 |
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| Anmerkung: |
© Società Italiana di Fisica 1968 |
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| Übergeordnetes Werk: |
Enthalten in: Il Nuovo Cimento A (1965-1970) - Springer Berlin Heidelberg, 1971, 53(1968), 3 vom: Feb., Seite 745-761 |
|---|---|
| Übergeordnetes Werk: |
volume:53 ; year:1968 ; number:3 ; month:02 ; pages:745-761 |
| Links: |
|---|
| DOI / URN: |
10.1007/BF02721720 |
|---|
| Katalog-ID: |
OLC208027760X |
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| 520 | |a Summary The interactions of 720 MeV negative pions with protons were investigated using pictures from the 35 cm Saclay hydrogen bubble chamber. Partial cross-sections were determined with the following results: σ(elastic)=13.2±0.5) mb, σ($ π^{−} $$ pπ^{0} $)=(5.25±0.30) mb, σ($ π^{−} $$ π^{+} $n)=()7.17±0.35) mb σ (neutrals)=(9.9±0.7) mb, σ (2π production)=(1.03±0.13) mb. The elastic-scattering angular distribution was fitted with a fifth-order polynomial in cos $ θ^{*} $π which shows the effect of a significantF5/2-D5/2 interference contribution and predicts a value for (dσ/dΩ) (0°) in agreement with dispersion theory. For both single-π production channels, the two-body effective mass plots and c.m. angular distributions are presented, discussed and compared with the predictions from phase-space, the Olsson-Yodh isobar model and the pole model of isobar production. $ TheN^{*} $(3/2, 3/2) isobar is seen to play an important role in the ππN final states, but the agreement of the data with the existing isobar models and their assumptions is not satisfactory. A comparison of the different two-pion production cross-sections $ π^{−} $$ pπ^{−} $$ π^{+} $, $ π^{−} $$ pπ^{0} $$ π^{0} $ and $ π^{−} $$ π^{+} $$ nπ^{0} $ suggests a strong contribution of $ π^{−} $p→$ η^{0} $n to the $ π^{−} $$ π^{+} $$ nπ^{0} $ final state. An upper limit for σ($ π^{−} $p→$ η^{0} $n) of (3.0±0.4) mb was obtained. | ||
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| 700 | 1 | |a Schotanus, D. J. |4 aut | |
| 700 | 1 | |a Tiecke, H. J. G. M. |4 aut | |
| 700 | 1 | |a Toet, D. Z. |4 aut | |
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10.1007/BF02721720 doi (DE-627)OLC208027760X (DE-He213)BF02721720-p DE-627 ger DE-627 rakwb eng 530 VZ 33.00 bkl Van de Walle, R. T. verfasserin aut π-p interactions at 720 MeV 1968 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Società Italiana di Fisica 1968 Summary The interactions of 720 MeV negative pions with protons were investigated using pictures from the 35 cm Saclay hydrogen bubble chamber. Partial cross-sections were determined with the following results: σ(elastic)=13.2±0.5) mb, σ($ π^{−} $$ pπ^{0} $)=(5.25±0.30) mb, σ($ π^{−} $$ π^{+} $n)=()7.17±0.35) mb σ (neutrals)=(9.9±0.7) mb, σ (2π production)=(1.03±0.13) mb. The elastic-scattering angular distribution was fitted with a fifth-order polynomial in cos $ θ^{*} $π which shows the effect of a significantF5/2-D5/2 interference contribution and predicts a value for (dσ/dΩ) (0°) in agreement with dispersion theory. For both single-π production channels, the two-body effective mass plots and c.m. angular distributions are presented, discussed and compared with the predictions from phase-space, the Olsson-Yodh isobar model and the pole model of isobar production. $ TheN^{*} $(3/2, 3/2) isobar is seen to play an important role in the ππN final states, but the agreement of the data with the existing isobar models and their assumptions is not satisfactory. A comparison of the different two-pion production cross-sections $ π^{−} $$ pπ^{−} $$ π^{+} $, $ π^{−} $$ pπ^{0} $$ π^{0} $ and $ π^{−} $$ π^{+} $$ nπ^{0} $ suggests a strong contribution of $ π^{−} $p→$ η^{0} $n to the $ π^{−} $$ π^{+} $$ nπ^{0} $ final state. An upper limit for σ($ π^{−} $p→$ η^{0} $n) of (3.0±0.4) mb was obtained. Pols, C. L. A. aut Schotanus, D. J. aut Tiecke, H. J. G. M. aut Toet, D. Z. aut Enthalten in Il Nuovo Cimento A (1965-1970) Springer Berlin Heidelberg, 1971 53(1968), 3 vom: Feb., Seite 745-761 (DE-627)130067792 (DE-600)441918-2 (DE-576)015602206 0369-3546 nnns volume:53 year:1968 number:3 month:02 pages:745-761 https://doi.org/10.1007/BF02721720 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-PHY 33.00 VZ AR 53 1968 3 02 745-761 |
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10.1007/BF02721720 doi (DE-627)OLC208027760X (DE-He213)BF02721720-p DE-627 ger DE-627 rakwb eng 530 VZ 33.00 bkl Van de Walle, R. T. verfasserin aut π-p interactions at 720 MeV 1968 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Società Italiana di Fisica 1968 Summary The interactions of 720 MeV negative pions with protons were investigated using pictures from the 35 cm Saclay hydrogen bubble chamber. Partial cross-sections were determined with the following results: σ(elastic)=13.2±0.5) mb, σ($ π^{−} $$ pπ^{0} $)=(5.25±0.30) mb, σ($ π^{−} $$ π^{+} $n)=()7.17±0.35) mb σ (neutrals)=(9.9±0.7) mb, σ (2π production)=(1.03±0.13) mb. The elastic-scattering angular distribution was fitted with a fifth-order polynomial in cos $ θ^{*} $π which shows the effect of a significantF5/2-D5/2 interference contribution and predicts a value for (dσ/dΩ) (0°) in agreement with dispersion theory. For both single-π production channels, the two-body effective mass plots and c.m. angular distributions are presented, discussed and compared with the predictions from phase-space, the Olsson-Yodh isobar model and the pole model of isobar production. $ TheN^{*} $(3/2, 3/2) isobar is seen to play an important role in the ππN final states, but the agreement of the data with the existing isobar models and their assumptions is not satisfactory. A comparison of the different two-pion production cross-sections $ π^{−} $$ pπ^{−} $$ π^{+} $, $ π^{−} $$ pπ^{0} $$ π^{0} $ and $ π^{−} $$ π^{+} $$ nπ^{0} $ suggests a strong contribution of $ π^{−} $p→$ η^{0} $n to the $ π^{−} $$ π^{+} $$ nπ^{0} $ final state. An upper limit for σ($ π^{−} $p→$ η^{0} $n) of (3.0±0.4) mb was obtained. Pols, C. L. A. aut Schotanus, D. J. aut Tiecke, H. J. G. M. aut Toet, D. Z. aut Enthalten in Il Nuovo Cimento A (1965-1970) Springer Berlin Heidelberg, 1971 53(1968), 3 vom: Feb., Seite 745-761 (DE-627)130067792 (DE-600)441918-2 (DE-576)015602206 0369-3546 nnns volume:53 year:1968 number:3 month:02 pages:745-761 https://doi.org/10.1007/BF02721720 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-PHY 33.00 VZ AR 53 1968 3 02 745-761 |
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10.1007/BF02721720 doi (DE-627)OLC208027760X (DE-He213)BF02721720-p DE-627 ger DE-627 rakwb eng 530 VZ 33.00 bkl Van de Walle, R. T. verfasserin aut π-p interactions at 720 MeV 1968 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Società Italiana di Fisica 1968 Summary The interactions of 720 MeV negative pions with protons were investigated using pictures from the 35 cm Saclay hydrogen bubble chamber. Partial cross-sections were determined with the following results: σ(elastic)=13.2±0.5) mb, σ($ π^{−} $$ pπ^{0} $)=(5.25±0.30) mb, σ($ π^{−} $$ π^{+} $n)=()7.17±0.35) mb σ (neutrals)=(9.9±0.7) mb, σ (2π production)=(1.03±0.13) mb. The elastic-scattering angular distribution was fitted with a fifth-order polynomial in cos $ θ^{*} $π which shows the effect of a significantF5/2-D5/2 interference contribution and predicts a value for (dσ/dΩ) (0°) in agreement with dispersion theory. For both single-π production channels, the two-body effective mass plots and c.m. angular distributions are presented, discussed and compared with the predictions from phase-space, the Olsson-Yodh isobar model and the pole model of isobar production. $ TheN^{*} $(3/2, 3/2) isobar is seen to play an important role in the ππN final states, but the agreement of the data with the existing isobar models and their assumptions is not satisfactory. A comparison of the different two-pion production cross-sections $ π^{−} $$ pπ^{−} $$ π^{+} $, $ π^{−} $$ pπ^{0} $$ π^{0} $ and $ π^{−} $$ π^{+} $$ nπ^{0} $ suggests a strong contribution of $ π^{−} $p→$ η^{0} $n to the $ π^{−} $$ π^{+} $$ nπ^{0} $ final state. An upper limit for σ($ π^{−} $p→$ η^{0} $n) of (3.0±0.4) mb was obtained. Pols, C. L. A. aut Schotanus, D. J. aut Tiecke, H. J. G. M. aut Toet, D. Z. aut Enthalten in Il Nuovo Cimento A (1965-1970) Springer Berlin Heidelberg, 1971 53(1968), 3 vom: Feb., Seite 745-761 (DE-627)130067792 (DE-600)441918-2 (DE-576)015602206 0369-3546 nnns volume:53 year:1968 number:3 month:02 pages:745-761 https://doi.org/10.1007/BF02721720 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-PHY 33.00 VZ AR 53 1968 3 02 745-761 |
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10.1007/BF02721720 doi (DE-627)OLC208027760X (DE-He213)BF02721720-p DE-627 ger DE-627 rakwb eng 530 VZ 33.00 bkl Van de Walle, R. T. verfasserin aut π-p interactions at 720 MeV 1968 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Società Italiana di Fisica 1968 Summary The interactions of 720 MeV negative pions with protons were investigated using pictures from the 35 cm Saclay hydrogen bubble chamber. Partial cross-sections were determined with the following results: σ(elastic)=13.2±0.5) mb, σ($ π^{−} $$ pπ^{0} $)=(5.25±0.30) mb, σ($ π^{−} $$ π^{+} $n)=()7.17±0.35) mb σ (neutrals)=(9.9±0.7) mb, σ (2π production)=(1.03±0.13) mb. The elastic-scattering angular distribution was fitted with a fifth-order polynomial in cos $ θ^{*} $π which shows the effect of a significantF5/2-D5/2 interference contribution and predicts a value for (dσ/dΩ) (0°) in agreement with dispersion theory. For both single-π production channels, the two-body effective mass plots and c.m. angular distributions are presented, discussed and compared with the predictions from phase-space, the Olsson-Yodh isobar model and the pole model of isobar production. $ TheN^{*} $(3/2, 3/2) isobar is seen to play an important role in the ππN final states, but the agreement of the data with the existing isobar models and their assumptions is not satisfactory. A comparison of the different two-pion production cross-sections $ π^{−} $$ pπ^{−} $$ π^{+} $, $ π^{−} $$ pπ^{0} $$ π^{0} $ and $ π^{−} $$ π^{+} $$ nπ^{0} $ suggests a strong contribution of $ π^{−} $p→$ η^{0} $n to the $ π^{−} $$ π^{+} $$ nπ^{0} $ final state. An upper limit for σ($ π^{−} $p→$ η^{0} $n) of (3.0±0.4) mb was obtained. Pols, C. L. A. aut Schotanus, D. J. aut Tiecke, H. J. G. M. aut Toet, D. Z. aut Enthalten in Il Nuovo Cimento A (1965-1970) Springer Berlin Heidelberg, 1971 53(1968), 3 vom: Feb., Seite 745-761 (DE-627)130067792 (DE-600)441918-2 (DE-576)015602206 0369-3546 nnns volume:53 year:1968 number:3 month:02 pages:745-761 https://doi.org/10.1007/BF02721720 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-PHY 33.00 VZ AR 53 1968 3 02 745-761 |
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10.1007/BF02721720 doi (DE-627)OLC208027760X (DE-He213)BF02721720-p DE-627 ger DE-627 rakwb eng 530 VZ 33.00 bkl Van de Walle, R. T. verfasserin aut π-p interactions at 720 MeV 1968 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Società Italiana di Fisica 1968 Summary The interactions of 720 MeV negative pions with protons were investigated using pictures from the 35 cm Saclay hydrogen bubble chamber. Partial cross-sections were determined with the following results: σ(elastic)=13.2±0.5) mb, σ($ π^{−} $$ pπ^{0} $)=(5.25±0.30) mb, σ($ π^{−} $$ π^{+} $n)=()7.17±0.35) mb σ (neutrals)=(9.9±0.7) mb, σ (2π production)=(1.03±0.13) mb. The elastic-scattering angular distribution was fitted with a fifth-order polynomial in cos $ θ^{*} $π which shows the effect of a significantF5/2-D5/2 interference contribution and predicts a value for (dσ/dΩ) (0°) in agreement with dispersion theory. For both single-π production channels, the two-body effective mass plots and c.m. angular distributions are presented, discussed and compared with the predictions from phase-space, the Olsson-Yodh isobar model and the pole model of isobar production. $ TheN^{*} $(3/2, 3/2) isobar is seen to play an important role in the ππN final states, but the agreement of the data with the existing isobar models and their assumptions is not satisfactory. A comparison of the different two-pion production cross-sections $ π^{−} $$ pπ^{−} $$ π^{+} $, $ π^{−} $$ pπ^{0} $$ π^{0} $ and $ π^{−} $$ π^{+} $$ nπ^{0} $ suggests a strong contribution of $ π^{−} $p→$ η^{0} $n to the $ π^{−} $$ π^{+} $$ nπ^{0} $ final state. An upper limit for σ($ π^{−} $p→$ η^{0} $n) of (3.0±0.4) mb was obtained. Pols, C. L. A. aut Schotanus, D. J. aut Tiecke, H. J. G. M. aut Toet, D. Z. aut Enthalten in Il Nuovo Cimento A (1965-1970) Springer Berlin Heidelberg, 1971 53(1968), 3 vom: Feb., Seite 745-761 (DE-627)130067792 (DE-600)441918-2 (DE-576)015602206 0369-3546 nnns volume:53 year:1968 number:3 month:02 pages:745-761 https://doi.org/10.1007/BF02721720 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-PHY 33.00 VZ AR 53 1968 3 02 745-761 |
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Il Nuovo Cimento A (1965-1970) |
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π-p interactions at 720 MeV |
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π-p interactions at 720 MeV |
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Van de Walle, R. T. |
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Il Nuovo Cimento A (1965-1970) |
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1968 |
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Van de Walle, R. T. Pols, C. L. A. Schotanus, D. J. Tiecke, H. J. G. M. Toet, D. Z. |
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Van de Walle, R. T. |
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10.1007/BF02721720 |
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530 |
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π-p interactions at 720 mev |
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π-p interactions at 720 MeV |
| abstract |
Summary The interactions of 720 MeV negative pions with protons were investigated using pictures from the 35 cm Saclay hydrogen bubble chamber. Partial cross-sections were determined with the following results: σ(elastic)=13.2±0.5) mb, σ($ π^{−} $$ pπ^{0} $)=(5.25±0.30) mb, σ($ π^{−} $$ π^{+} $n)=()7.17±0.35) mb σ (neutrals)=(9.9±0.7) mb, σ (2π production)=(1.03±0.13) mb. The elastic-scattering angular distribution was fitted with a fifth-order polynomial in cos $ θ^{*} $π which shows the effect of a significantF5/2-D5/2 interference contribution and predicts a value for (dσ/dΩ) (0°) in agreement with dispersion theory. For both single-π production channels, the two-body effective mass plots and c.m. angular distributions are presented, discussed and compared with the predictions from phase-space, the Olsson-Yodh isobar model and the pole model of isobar production. $ TheN^{*} $(3/2, 3/2) isobar is seen to play an important role in the ππN final states, but the agreement of the data with the existing isobar models and their assumptions is not satisfactory. A comparison of the different two-pion production cross-sections $ π^{−} $$ pπ^{−} $$ π^{+} $, $ π^{−} $$ pπ^{0} $$ π^{0} $ and $ π^{−} $$ π^{+} $$ nπ^{0} $ suggests a strong contribution of $ π^{−} $p→$ η^{0} $n to the $ π^{−} $$ π^{+} $$ nπ^{0} $ final state. An upper limit for σ($ π^{−} $p→$ η^{0} $n) of (3.0±0.4) mb was obtained. © Società Italiana di Fisica 1968 |
| abstractGer |
Summary The interactions of 720 MeV negative pions with protons were investigated using pictures from the 35 cm Saclay hydrogen bubble chamber. Partial cross-sections were determined with the following results: σ(elastic)=13.2±0.5) mb, σ($ π^{−} $$ pπ^{0} $)=(5.25±0.30) mb, σ($ π^{−} $$ π^{+} $n)=()7.17±0.35) mb σ (neutrals)=(9.9±0.7) mb, σ (2π production)=(1.03±0.13) mb. The elastic-scattering angular distribution was fitted with a fifth-order polynomial in cos $ θ^{*} $π which shows the effect of a significantF5/2-D5/2 interference contribution and predicts a value for (dσ/dΩ) (0°) in agreement with dispersion theory. For both single-π production channels, the two-body effective mass plots and c.m. angular distributions are presented, discussed and compared with the predictions from phase-space, the Olsson-Yodh isobar model and the pole model of isobar production. $ TheN^{*} $(3/2, 3/2) isobar is seen to play an important role in the ππN final states, but the agreement of the data with the existing isobar models and their assumptions is not satisfactory. A comparison of the different two-pion production cross-sections $ π^{−} $$ pπ^{−} $$ π^{+} $, $ π^{−} $$ pπ^{0} $$ π^{0} $ and $ π^{−} $$ π^{+} $$ nπ^{0} $ suggests a strong contribution of $ π^{−} $p→$ η^{0} $n to the $ π^{−} $$ π^{+} $$ nπ^{0} $ final state. An upper limit for σ($ π^{−} $p→$ η^{0} $n) of (3.0±0.4) mb was obtained. © Società Italiana di Fisica 1968 |
| abstract_unstemmed |
Summary The interactions of 720 MeV negative pions with protons were investigated using pictures from the 35 cm Saclay hydrogen bubble chamber. Partial cross-sections were determined with the following results: σ(elastic)=13.2±0.5) mb, σ($ π^{−} $$ pπ^{0} $)=(5.25±0.30) mb, σ($ π^{−} $$ π^{+} $n)=()7.17±0.35) mb σ (neutrals)=(9.9±0.7) mb, σ (2π production)=(1.03±0.13) mb. The elastic-scattering angular distribution was fitted with a fifth-order polynomial in cos $ θ^{*} $π which shows the effect of a significantF5/2-D5/2 interference contribution and predicts a value for (dσ/dΩ) (0°) in agreement with dispersion theory. For both single-π production channels, the two-body effective mass plots and c.m. angular distributions are presented, discussed and compared with the predictions from phase-space, the Olsson-Yodh isobar model and the pole model of isobar production. $ TheN^{*} $(3/2, 3/2) isobar is seen to play an important role in the ππN final states, but the agreement of the data with the existing isobar models and their assumptions is not satisfactory. A comparison of the different two-pion production cross-sections $ π^{−} $$ pπ^{−} $$ π^{+} $, $ π^{−} $$ pπ^{0} $$ π^{0} $ and $ π^{−} $$ π^{+} $$ nπ^{0} $ suggests a strong contribution of $ π^{−} $p→$ η^{0} $n to the $ π^{−} $$ π^{+} $$ nπ^{0} $ final state. An upper limit for σ($ π^{−} $p→$ η^{0} $n) of (3.0±0.4) mb was obtained. © Società Italiana di Fisica 1968 |
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π-p interactions at 720 MeV |
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