Beam-Recoil Polarization Measurement of π[superscript 0] Electroproduction on the Proton in the Region of the Roper Resonance
The helicity-dependent recoil proton polarizations P[superscript '][subscript x] and P[superscript ′][subscript z] as well as the helicity-independent component P[subscript y] have been measured in the p([→ over e],e[superscript ′][→ over p])π[superscript 0] reaction at four-momentum transfer Q...
| Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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American Physical Society
2017
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| Online Access: | http://hdl.handle.net/1721.1/110698 |
| _version_ | 1810986011655667712 |
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| author | Štajner, S. Achenbach, P. Beranek, T. Beričič, J. Bosnar, D. Böhm, R. Correa, L. Denig, A. Distler, M. O. Esser, A. Fonvieille, H. Friedrich, J. M. Friščić, I. Kegel, S. Kohl, Y. Merkel, H. Mihovilovič, M. Müller, J. Müller, U. Nungesser, L. Pochodzalla, J. Schlimme, B. S. Schoth, M. Schulz, F. Sfienti, C. Širca, S. Thiel, M. Tiator, L. Tyukin, A. Weber, A. Yaron, I. Bernauer, Jan Christopher |
| author2 | Massachusetts Institute of Technology. Laboratory for Nuclear Science |
| author_facet | Massachusetts Institute of Technology. Laboratory for Nuclear Science Štajner, S. Achenbach, P. Beranek, T. Beričič, J. Bosnar, D. Böhm, R. Correa, L. Denig, A. Distler, M. O. Esser, A. Fonvieille, H. Friedrich, J. M. Friščić, I. Kegel, S. Kohl, Y. Merkel, H. Mihovilovič, M. Müller, J. Müller, U. Nungesser, L. Pochodzalla, J. Schlimme, B. S. Schoth, M. Schulz, F. Sfienti, C. Širca, S. Thiel, M. Tiator, L. Tyukin, A. Weber, A. Yaron, I. Bernauer, Jan Christopher |
| author_sort | Štajner, S. |
| collection | MIT |
| description | The helicity-dependent recoil proton polarizations P[superscript '][subscript x] and P[superscript ′][subscript z] as well as the helicity-independent component P[subscript y] have been measured in the p([→ over e],e[superscript ′][→ over p])π[superscript 0] reaction at four-momentum transfer Q[superscript 2]≃0.1 GeV[superscript 2], center-of-mass proton emission angle θ[superscript *][subscript p]≃90°, and invariant mass W≃1440 MeV. This first precise measurement of double-polarization observables in the energy domain of the Roper resonance P[subscript 11](1440) by exploiting recoil polarimetry has allowed for the extraction of its scalar electroexcitation amplitude at an unprecedentedly low value of Q[superscript 2], establishing a powerful instrument for probing the interplay of quark and meson degrees of freedom in the nucleon. |
| first_indexed | 2024-09-23T11:27:26Z |
| format | Article |
| id | mit-1721.1/110698 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T11:27:26Z |
| publishDate | 2017 |
| publisher | American Physical Society |
| record_format | dspace |
| spelling | mit-1721.1/1106982022-09-27T19:39:58Z Beam-Recoil Polarization Measurement of π[superscript 0] Electroproduction on the Proton in the Region of the Roper Resonance Beam-Recoil Polarization Measurement of π0 Electroproduction on the Proton in the Region of the Roper Resonance Štajner, S. Achenbach, P. Beranek, T. Beričič, J. Bosnar, D. Böhm, R. Correa, L. Denig, A. Distler, M. O. Esser, A. Fonvieille, H. Friedrich, J. M. Friščić, I. Kegel, S. Kohl, Y. Merkel, H. Mihovilovič, M. Müller, J. Müller, U. Nungesser, L. Pochodzalla, J. Schlimme, B. S. Schoth, M. Schulz, F. Sfienti, C. Širca, S. Thiel, M. Tiator, L. Tyukin, A. Weber, A. Yaron, I. Bernauer, Jan Christopher Massachusetts Institute of Technology. Laboratory for Nuclear Science Bernauer, Jan Christopher The helicity-dependent recoil proton polarizations P[superscript '][subscript x] and P[superscript ′][subscript z] as well as the helicity-independent component P[subscript y] have been measured in the p([→ over e],e[superscript ′][→ over p])π[superscript 0] reaction at four-momentum transfer Q[superscript 2]≃0.1 GeV[superscript 2], center-of-mass proton emission angle θ[superscript *][subscript p]≃90°, and invariant mass W≃1440 MeV. This first precise measurement of double-polarization observables in the energy domain of the Roper resonance P[subscript 11](1440) by exploiting recoil polarimetry has allowed for the extraction of its scalar electroexcitation amplitude at an unprecedentedly low value of Q[superscript 2], establishing a powerful instrument for probing the interplay of quark and meson degrees of freedom in the nucleon. 2017-07-14T13:43:14Z 2017-07-14T13:43:14Z 2017-07 2017-03 2017-07-13T22:00:05Z Article http://purl.org/eprint/type/JournalArticle 0031-9007 1079-7114 http://hdl.handle.net/1721.1/110698 Štajner, S. et al. “Beam-Recoil Polarization Measurement of π[superscript 0] Electroproduction on the Proton in the Region of the Roper Resonance.” Physical Review Letters 119.2 (2017): n. pag. © 2017 American Physical Society en http://dx.doi.org/10.1103/PhysRevLett.119.022001 Physical Review Letters Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. American Physical Society application/pdf American Physical Society American Physical Society |
| spellingShingle | Štajner, S. Achenbach, P. Beranek, T. Beričič, J. Bosnar, D. Böhm, R. Correa, L. Denig, A. Distler, M. O. Esser, A. Fonvieille, H. Friedrich, J. M. Friščić, I. Kegel, S. Kohl, Y. Merkel, H. Mihovilovič, M. Müller, J. Müller, U. Nungesser, L. Pochodzalla, J. Schlimme, B. S. Schoth, M. Schulz, F. Sfienti, C. Širca, S. Thiel, M. Tiator, L. Tyukin, A. Weber, A. Yaron, I. Bernauer, Jan Christopher Beam-Recoil Polarization Measurement of π[superscript 0] Electroproduction on the Proton in the Region of the Roper Resonance |
| title | Beam-Recoil Polarization Measurement of π[superscript 0] Electroproduction on the Proton in the Region of the Roper Resonance |
| title_full | Beam-Recoil Polarization Measurement of π[superscript 0] Electroproduction on the Proton in the Region of the Roper Resonance |
| title_fullStr | Beam-Recoil Polarization Measurement of π[superscript 0] Electroproduction on the Proton in the Region of the Roper Resonance |
| title_full_unstemmed | Beam-Recoil Polarization Measurement of π[superscript 0] Electroproduction on the Proton in the Region of the Roper Resonance |
| title_short | Beam-Recoil Polarization Measurement of π[superscript 0] Electroproduction on the Proton in the Region of the Roper Resonance |
| title_sort | beam recoil polarization measurement of π superscript 0 electroproduction on the proton in the region of the roper resonance |
| url | http://hdl.handle.net/1721.1/110698 |
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