Dispersive analysis of the γγ⁎ → ππ process
We present a theoretical study of the γγ⁎→π+π−,π0π0 processes from the threshold through the f2(1270) region in the ππ invariant mass. We adopt the Omnès representation in order to account for rescattering effects in both s- and d-partial waves. For the description of the f0(980) resonance, we imple...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Elsevier
2019-02-01
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| Series: | Physics Letters B |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S037026931830981X |
| _version_ | 1811286574532395008 |
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| author | Igor Danilkin Marc Vanderhaeghen |
| author_facet | Igor Danilkin Marc Vanderhaeghen |
| author_sort | Igor Danilkin |
| collection | DOAJ |
| description | We present a theoretical study of the γγ⁎→π+π−,π0π0 processes from the threshold through the f2(1270) region in the ππ invariant mass. We adopt the Omnès representation in order to account for rescattering effects in both s- and d-partial waves. For the description of the f0(980) resonance, we implement a coupled-channel unitarity. The constructed amplitudes serve as an essential framework to interpret the current experimental two-photon fusion program at BESIII. They also provide an important input for the dispersive analyses of the hadronic light-by-light scattering contribution to the muon's anomalous magnetic moment. |
| first_indexed | 2024-04-13T03:03:23Z |
| format | Article |
| id | doaj.art-a811db1679a54bcbb0759e5ea0c82316 |
| institution | Directory Open Access Journal |
| issn | 0370-2693 |
| language | English |
| last_indexed | 2024-04-13T03:03:23Z |
| publishDate | 2019-02-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Physics Letters B |
| spelling | doaj.art-a811db1679a54bcbb0759e5ea0c823162022-12-22T03:05:22ZengElsevierPhysics Letters B0370-26932019-02-01789366372Dispersive analysis of the γγ⁎ → ππ processIgor Danilkin0Marc Vanderhaeghen1Corresponding author.; Institut für Kernphysik & PRISMA Cluster of Excellence, Johannes Gutenberg Universität, D-55099 Mainz, GermanyInstitut für Kernphysik & PRISMA Cluster of Excellence, Johannes Gutenberg Universität, D-55099 Mainz, GermanyWe present a theoretical study of the γγ⁎→π+π−,π0π0 processes from the threshold through the f2(1270) region in the ππ invariant mass. We adopt the Omnès representation in order to account for rescattering effects in both s- and d-partial waves. For the description of the f0(980) resonance, we implement a coupled-channel unitarity. The constructed amplitudes serve as an essential framework to interpret the current experimental two-photon fusion program at BESIII. They also provide an important input for the dispersive analyses of the hadronic light-by-light scattering contribution to the muon's anomalous magnetic moment.http://www.sciencedirect.com/science/article/pii/S037026931830981X |
| spellingShingle | Igor Danilkin Marc Vanderhaeghen Dispersive analysis of the γγ⁎ → ππ process Physics Letters B |
| title | Dispersive analysis of the γγ⁎ → ππ process |
| title_full | Dispersive analysis of the γγ⁎ → ππ process |
| title_fullStr | Dispersive analysis of the γγ⁎ → ππ process |
| title_full_unstemmed | Dispersive analysis of the γγ⁎ → ππ process |
| title_short | Dispersive analysis of the γγ⁎ → ππ process |
| title_sort | dispersive analysis of the γγ ππ process |
| url | http://www.sciencedirect.com/science/article/pii/S037026931830981X |
| work_keys_str_mv | AT igordanilkin dispersiveanalysisofthengppprocess AT marcvanderhaeghen dispersiveanalysisofthengppprocess |