Threshold $\pi^0$ photoproduction in relativistic chiral perturbation theory
We present a calculation of $\pi^0$ photoproduction on the proton in manifestly Lorentz-invariant baryon chiral perturbation theory up to and including chiral order $q^4$. With the results we analyze the latest $\pi^0$ photoproduction data in the threshold region obtained at the Mainz Microtron. In...
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| creator | Hilt, Marius Scherer, Stefan Tiator, Lothar |
| description | We present a calculation of $\pi^0$ photoproduction on the proton in
manifestly Lorentz-invariant baryon chiral perturbation theory up to and
including chiral order $q^4$. With the results we analyze the latest $\pi^0$
photoproduction data in the threshold region obtained at the Mainz Microtron.
In the calculation of observables and the fit of the low-energy constants, we
take $S$, $P$, and $D$ waves into account. We compare the results for the
multipoles with the corresponding single-energy analysis. Furthermore, we also
fit the $O(q^4)$ heavy-baryon chiral perturbation theory calculation and
compare both results. We provide predictions for several polarization
observables for future experiments. Finally, we discuss the $\beta$ parameter
of the unitarity cusp which is related to the breaking of isospin symmetry. |
| doi_str_mv | 10.48550/arxiv.1301.5576 |
| format | Article |
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manifestly Lorentz-invariant baryon chiral perturbation theory up to and
including chiral order $q^4$. With the results we analyze the latest $\pi^0$
photoproduction data in the threshold region obtained at the Mainz Microtron.
In the calculation of observables and the fit of the low-energy constants, we
take $S$, $P$, and $D$ waves into account. We compare the results for the
multipoles with the corresponding single-energy analysis. Furthermore, we also
fit the $O(q^4)$ heavy-baryon chiral perturbation theory calculation and
compare both results. We provide predictions for several polarization
observables for future experiments. Finally, we discuss the $\beta$ parameter
of the unitarity cusp which is related to the breaking of isospin symmetry.</description><identifier>DOI: 10.48550/arxiv.1301.5576</identifier><language>eng</language><subject>Physics - High Energy Physics - Phenomenology ; Physics - Nuclear Experiment ; Physics - Nuclear Theory</subject><creationdate>2013-01</creationdate><rights>http://arxiv.org/licenses/nonexclusive-distrib/1.0</rights><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>228,230,780,885</link.rule.ids><linktorsrc>$$Uhttps://arxiv.org/abs/1301.5576$$EView_record_in_Cornell_University$$FView_record_in_$$GCornell_University$$Hfree_for_read</linktorsrc><backlink>$$Uhttps://doi.org/10.48550/arXiv.1301.5576$$DView paper in arXiv$$Hfree_for_read</backlink><backlink>$$Uhttps://doi.org/10.1103/PhysRevC.87.045204$$DView published paper (Access to full text may be restricted)$$Hfree_for_read</backlink></links><search><creatorcontrib>Hilt, Marius</creatorcontrib><creatorcontrib>Scherer, Stefan</creatorcontrib><creatorcontrib>Tiator, Lothar</creatorcontrib><title>Threshold $\pi^0$ photoproduction in relativistic chiral perturbation theory</title><description>We present a calculation of $\pi^0$ photoproduction on the proton in
manifestly Lorentz-invariant baryon chiral perturbation theory up to and
including chiral order $q^4$. With the results we analyze the latest $\pi^0$
photoproduction data in the threshold region obtained at the Mainz Microtron.
In the calculation of observables and the fit of the low-energy constants, we
take $S$, $P$, and $D$ waves into account. We compare the results for the
multipoles with the corresponding single-energy analysis. Furthermore, we also
fit the $O(q^4)$ heavy-baryon chiral perturbation theory calculation and
compare both results. We provide predictions for several polarization
observables for future experiments. Finally, we discuss the $\beta$ parameter
of the unitarity cusp which is related to the breaking of isospin symmetry.</description><subject>Physics - High Energy Physics - Phenomenology</subject><subject>Physics - Nuclear Experiment</subject><subject>Physics - Nuclear Theory</subject><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2013</creationdate><recordtype>article</recordtype><sourceid>GOX</sourceid><recordid>eNqFzbEKwjAUQNEsDqLuTpKhqzGhRt1FcXDsKIY0jeRBbMJLWuzfS4u7010uHELWgrP9SUq-0_iBnomSCybl8TAn98qhTS74hhaPCE9e0OhCDhFD05kMoaXQUrReZ-ghZTDUOEDtabSYO6z19GRnAw5LMntpn-zq1wXZXC_V-badWBUR3hoHNfJq5Mu_wxem4zth</recordid><startdate>20130123</startdate><enddate>20130123</enddate><creator>Hilt, Marius</creator><creator>Scherer, Stefan</creator><creator>Tiator, Lothar</creator><scope>GOX</scope></search><sort><creationdate>20130123</creationdate><title>Threshold $\pi^0$ photoproduction in relativistic chiral perturbation theory</title><author>Hilt, Marius ; Scherer, Stefan ; Tiator, Lothar</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-arxiv_primary_1301_55763</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2013</creationdate><topic>Physics - High Energy Physics - Phenomenology</topic><topic>Physics - Nuclear Experiment</topic><topic>Physics - Nuclear Theory</topic><toplevel>online_resources</toplevel><creatorcontrib>Hilt, Marius</creatorcontrib><creatorcontrib>Scherer, Stefan</creatorcontrib><creatorcontrib>Tiator, Lothar</creatorcontrib><collection>arXiv.org</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Hilt, Marius</au><au>Scherer, Stefan</au><au>Tiator, Lothar</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Threshold $\pi^0$ photoproduction in relativistic chiral perturbation theory</atitle><date>2013-01-23</date><risdate>2013</risdate><abstract>We present a calculation of $\pi^0$ photoproduction on the proton in
manifestly Lorentz-invariant baryon chiral perturbation theory up to and
including chiral order $q^4$. With the results we analyze the latest $\pi^0$
photoproduction data in the threshold region obtained at the Mainz Microtron.
In the calculation of observables and the fit of the low-energy constants, we
take $S$, $P$, and $D$ waves into account. We compare the results for the
multipoles with the corresponding single-energy analysis. Furthermore, we also
fit the $O(q^4)$ heavy-baryon chiral perturbation theory calculation and
compare both results. We provide predictions for several polarization
observables for future experiments. Finally, we discuss the $\beta$ parameter
of the unitarity cusp which is related to the breaking of isospin symmetry.</abstract><doi>10.48550/arxiv.1301.5576</doi><oa>free_for_read</oa></addata></record> |
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| subjects | Physics - High Energy Physics - Phenomenology Physics - Nuclear Experiment Physics - Nuclear Theory |
| title | Threshold $\pi^0$ photoproduction in relativistic chiral perturbation theory |
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