Accurate Test of Chiral Dynamics in the [→ over y]p→π[superscript 0]p Reaction
A precision measurement of the differential cross sections dσ/dΩ and the linearly polarized photon asymmetry Σ≡(dσ[subscript ⊥]-dσ[subscript ∥])/(dσ[subscript ⊥]+dσ[subscript ∥]) for the γ⃗p→π[superscript 0]p reaction in the near-threshold region has been performed with a tagged photon beam and almo...
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| Format: | Article |
| Language: | en_US |
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American Physical Society
2013
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| Online Access: | http://hdl.handle.net/1721.1/81383 https://orcid.org/0000-0002-5665-3081 |
| _version_ | 1826202366618107904 |
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| author | Bernstein, Aron M. |
| author2 | Massachusetts Institute of Technology. Department of Physics |
| author_facet | Massachusetts Institute of Technology. Department of Physics Bernstein, Aron M. |
| author_sort | Bernstein, Aron M. |
| collection | MIT |
| description | A precision measurement of the differential cross sections dσ/dΩ and the linearly polarized photon asymmetry Σ≡(dσ[subscript ⊥]-dσ[subscript ∥])/(dσ[subscript ⊥]+dσ[subscript ∥]) for the γ⃗p→π[superscript 0]p reaction in the near-threshold region has been performed with a tagged photon beam and almost 4π detector at the Mainz Microtron. The Glasgow-Mainz photon tagging facility along with the Crystal Ball/TAPS multiphoton detector system and a cryogenic liquid hydrogen target were used. These data allowed for a precise determination of the energy dependence of the real parts of the S- and all three P-wave amplitudes for the first time and provide the most stringent test to date of the predictions of chiral perturbation theory and its energy region of agreement with experiment. |
| first_indexed | 2024-09-23T12:06:20Z |
| format | Article |
| id | mit-1721.1/81383 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T12:06:20Z |
| publishDate | 2013 |
| publisher | American Physical Society |
| record_format | dspace |
| spelling | mit-1721.1/813832022-09-28T00:09:08Z Accurate Test of Chiral Dynamics in the [→ over y]p→π[superscript 0]p Reaction Bernstein, Aron M. Massachusetts Institute of Technology. Department of Physics Bernstein, Aron M. A precision measurement of the differential cross sections dσ/dΩ and the linearly polarized photon asymmetry Σ≡(dσ[subscript ⊥]-dσ[subscript ∥])/(dσ[subscript ⊥]+dσ[subscript ∥]) for the γ⃗p→π[superscript 0]p reaction in the near-threshold region has been performed with a tagged photon beam and almost 4π detector at the Mainz Microtron. The Glasgow-Mainz photon tagging facility along with the Crystal Ball/TAPS multiphoton detector system and a cryogenic liquid hydrogen target were used. These data allowed for a precise determination of the energy dependence of the real parts of the S- and all three P-wave amplitudes for the first time and provide the most stringent test to date of the predictions of chiral perturbation theory and its energy region of agreement with experiment. National Science Foundation (U.S.) United States. Dept. of Energy 2013-10-15T15:23:13Z 2013-10-15T15:23:13Z 2013-08 2012-11 Article http://purl.org/eprint/type/JournalArticle 0031-9007 1079-7114 http://hdl.handle.net/1721.1/81383 Hornidge, D. et al. “Accurate Test of Chiral Dynamics in the γ[over →]p→π^{0}p Reaction.” Physical Review Letters 111.6 (2013). © 2013 American Physical Society https://orcid.org/0000-0002-5665-3081 en_US http://dx.doi.org/10.1103/PhysRevLett.111.062004 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. application/pdf American Physical Society American Physical Society |
| spellingShingle | Bernstein, Aron M. Accurate Test of Chiral Dynamics in the [→ over y]p→π[superscript 0]p Reaction |
| title | Accurate Test of Chiral Dynamics in the [→ over y]p→π[superscript 0]p Reaction |
| title_full | Accurate Test of Chiral Dynamics in the [→ over y]p→π[superscript 0]p Reaction |
| title_fullStr | Accurate Test of Chiral Dynamics in the [→ over y]p→π[superscript 0]p Reaction |
| title_full_unstemmed | Accurate Test of Chiral Dynamics in the [→ over y]p→π[superscript 0]p Reaction |
| title_short | Accurate Test of Chiral Dynamics in the [→ over y]p→π[superscript 0]p Reaction |
| title_sort | accurate test of chiral dynamics in the over y p π superscript 0 p reaction |
| url | http://hdl.handle.net/1721.1/81383 https://orcid.org/0000-0002-5665-3081 |
| work_keys_str_mv | AT bernsteinaronm accuratetestofchiraldynamicsintheoveryppsuperscript0preaction |