The Photon–Pion Transition Form Factor: Incompatible Data or Incompatible Models?
The elastic and γ → π transition form factors of the pion along with its usual static observables are calculated within a light-front field approach to the constituent quark model. The focus of this exercise in a simple model is on a unified description of all observables with one singly parametrize...
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| Veröffentlicht in: | Few-body systems 2014-06, Vol.55 (5-7), p.373-379 |
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| creator | de Melo, J. P. B. C. El-Bennich, Bruno Frederico, Tobias |
| description | The elastic and
γ
→
π
transition form factors of the pion along with its usual static observables are calculated within a light-front field approach to the constituent quark model. The focus of this exercise in a simple model is on a unified description of all observables with
one
singly parametrized light-front wave function to detect possible discrepancies in experimental data, in particular the contentious large momentum-squared data on the transition factor as reported by BaBar and Belle. We also discuss the relation of a small to vanishing pion charge radius with an almost constant pion distribution amplitude and compare our results with those obtained in a holographic light-front model. |
| doi_str_mv | 10.1007/s00601-014-0853-z |
| format | Article |
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γ
→
π
transition form factors of the pion along with its usual static observables are calculated within a light-front field approach to the constituent quark model. The focus of this exercise in a simple model is on a unified description of all observables with
one
singly parametrized light-front wave function to detect possible discrepancies in experimental data, in particular the contentious large momentum-squared data on the transition factor as reported by BaBar and Belle. We also discuss the relation of a small to vanishing pion charge radius with an almost constant pion distribution amplitude and compare our results with those obtained in a holographic light-front model.</description><identifier>ISSN: 0177-7963</identifier><identifier>EISSN: 1432-5411</identifier><identifier>DOI: 10.1007/s00601-014-0853-z</identifier><identifier>CODEN: FBSYEQ</identifier><language>eng</language><publisher>Vienna: Springer Vienna</publisher><subject>Amplitudes ; Atomic ; Charge ; Constants ; Form factors ; Hadrons ; Heavy Ions ; Mathematical models ; Molecular ; Nuclear Physics ; Optical and Plasma Physics ; Particle and Nuclear Physics ; Physics ; Physics and Astronomy ; Pions ; Quantum field theory ; Quark models ; Wave functions</subject><ispartof>Few-body systems, 2014-06, Vol.55 (5-7), p.373-379</ispartof><rights>Springer-Verlag Wien 2014</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c349t-f908cdaccbec15091632603b4674fa6958c04248595c294ffce9b72db65bcecb3</citedby><cites>FETCH-LOGICAL-c349t-f908cdaccbec15091632603b4674fa6958c04248595c294ffce9b72db65bcecb3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://link.springer.com/content/pdf/10.1007/s00601-014-0853-z$$EPDF$$P50$$Gspringer$$H</linktopdf><linktohtml>$$Uhttps://link.springer.com/10.1007/s00601-014-0853-z$$EHTML$$P50$$Gspringer$$H</linktohtml><link.rule.ids>315,781,785,27929,27930,41493,42562,51324</link.rule.ids></links><search><creatorcontrib>de Melo, J. P. B. C.</creatorcontrib><creatorcontrib>El-Bennich, Bruno</creatorcontrib><creatorcontrib>Frederico, Tobias</creatorcontrib><title>The Photon–Pion Transition Form Factor: Incompatible Data or Incompatible Models?</title><title>Few-body systems</title><addtitle>Few-Body Syst</addtitle><description>The elastic and
γ
→
π
transition form factors of the pion along with its usual static observables are calculated within a light-front field approach to the constituent quark model. The focus of this exercise in a simple model is on a unified description of all observables with
one
singly parametrized light-front wave function to detect possible discrepancies in experimental data, in particular the contentious large momentum-squared data on the transition factor as reported by BaBar and Belle. We also discuss the relation of a small to vanishing pion charge radius with an almost constant pion distribution amplitude and compare our results with those obtained in a holographic light-front model.</description><subject>Amplitudes</subject><subject>Atomic</subject><subject>Charge</subject><subject>Constants</subject><subject>Form factors</subject><subject>Hadrons</subject><subject>Heavy Ions</subject><subject>Mathematical models</subject><subject>Molecular</subject><subject>Nuclear Physics</subject><subject>Optical and Plasma Physics</subject><subject>Particle and Nuclear Physics</subject><subject>Physics</subject><subject>Physics and Astronomy</subject><subject>Pions</subject><subject>Quantum field theory</subject><subject>Quark models</subject><subject>Wave functions</subject><issn>0177-7963</issn><issn>1432-5411</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2014</creationdate><recordtype>article</recordtype><sourceid>ABUWG</sourceid><sourceid>AFKRA</sourceid><sourceid>AZQEC</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><sourceid>DWQXO</sourceid><sourceid>GNUQQ</sourceid><recordid>eNp1kL9OwzAQhy0EEqXwAGyRWFgM5_hfzIIQUKhURCXKbDmuQ1MlcbHTgU68A2_Ik5AqDIDEdKfT97s7fQgdEzgjAPI8AgggGAjDkHGKNztoQBhNMWeE7KIBECmxVILuo4MYlwCEKwID9DRbuGS68K1vPt8_pqVvklkwTSzbbTvyoU5GxrY-XCTjxvp6Zdoyr1xyY1qT-PB7-ODnroqXh2ivMFV0R991iJ5Ht7Prezx5vBtfX02wpUy1uFCQ2bmxNneWcFBE0FQAzZmQrDBC8cwCS1nGFbepYkVhncplOs8Fz62zOR2i037vKvjXtYutrstoXVWZxvl11IQLCUJQnnXoyR906deh6b7rKCo547I7PUSkp2zwMQZX6FUoaxPeNAG91ax7zbrTrLea9abLpH0mdmzz4sKPzf-GvgBRt4B8</recordid><startdate>20140601</startdate><enddate>20140601</enddate><creator>de Melo, J. 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γ
→
π
transition form factors of the pion along with its usual static observables are calculated within a light-front field approach to the constituent quark model. The focus of this exercise in a simple model is on a unified description of all observables with
one
singly parametrized light-front wave function to detect possible discrepancies in experimental data, in particular the contentious large momentum-squared data on the transition factor as reported by BaBar and Belle. We also discuss the relation of a small to vanishing pion charge radius with an almost constant pion distribution amplitude and compare our results with those obtained in a holographic light-front model.</abstract><cop>Vienna</cop><pub>Springer Vienna</pub><doi>10.1007/s00601-014-0853-z</doi><tpages>7</tpages></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 0177-7963 |
| ispartof | Few-body systems, 2014-06, Vol.55 (5-7), p.373-379 |
| issn | 0177-7963 1432-5411 |
| language | eng |
| recordid | cdi_proquest_miscellaneous_1567066358 |
| source | SpringerNature Journals |
| subjects | Amplitudes Atomic Charge Constants Form factors Hadrons Heavy Ions Mathematical models Molecular Nuclear Physics Optical and Plasma Physics Particle and Nuclear Physics Physics Physics and Astronomy Pions Quantum field theory Quark models Wave functions |
| title | The Photon–Pion Transition Form Factor: Incompatible Data or Incompatible Models? |
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