Di- $$\pi ^0$$ π 0 production and generalized distribution amplitudes at future electron-ion colliders
Abstract Generalized distribution amplitudes (GDAs) offer valuable insights into the three-dimensional structure of hadrons, delineating the amplitudes associated with the transition from a quark–antiquark pair to a hadron pair. Currently, hadron GDAs can be probed in electron–positron collisions, w...
Saved in:
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
SpringerOpen
2025-05-01
|
| Series: | European Physical Journal C: Particles and Fields |
| Online Access: | https://doi.org/10.1140/epjc/s10052-025-14227-5 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1849311985656659968 |
|---|---|
| author | Bing’ang Guo Jing Han Ya-Ping Xie Xurong Chen |
| author_facet | Bing’ang Guo Jing Han Ya-Ping Xie Xurong Chen |
| author_sort | Bing’ang Guo |
| collection | DOAJ |
| description | Abstract Generalized distribution amplitudes (GDAs) offer valuable insights into the three-dimensional structure of hadrons, delineating the amplitudes associated with the transition from a quark–antiquark pair to a hadron pair. Currently, hadron GDAs can be probed in electron–positron collisions, with experimental feasibility demonstrated at facilities such as Belle and BESIII. In this study, we put forth the proposition that hadron GDAs can also be investigated in electron–hadron collisions at forthcoming Electron-Ion Colliders (EICs), specifically through the subprocess $$\gamma ^*\gamma \rightarrow h_1 h_2.$$ γ ∗ γ → h 1 h 2 . In this framework, a quasi-real photon, emitted by the ion, exhibits a photon flux proportional to the square of the ion’s electric charge. Consequently, we anticipate that the cross sections in EICs will be substantially larger than those in electron–positron collisions. We present numerical calculations pertaining to di- $$\pi ^0$$ π 0 production employing the equivalent photon approximation (EPA). Our findings suggest that, within the same kinematic region, electron-proton (e-p) collisions at the EIC could yield an event rate comparable to that of Belle II, while electron-gold (e-Au) collisions are expected to generate an even greater number of events. This enhanced event rate facilitates a high-precision examination of di- $$\pi ^0$$ π 0 GDAs at the EIC. |
| format | Article |
| id | doaj-art-c2cd19bb7fbd4cda983b73cbcf369d41 |
| institution | Kabale University |
| issn | 1434-6052 |
| language | English |
| publishDate | 2025-05-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | European Physical Journal C: Particles and Fields |
| spelling | doaj-art-c2cd19bb7fbd4cda983b73cbcf369d412025-08-20T03:53:13ZengSpringerOpenEuropean Physical Journal C: Particles and Fields1434-60522025-05-018551610.1140/epjc/s10052-025-14227-5Di- $$\pi ^0$$ π 0 production and generalized distribution amplitudes at future electron-ion collidersBing’ang Guo0Jing Han1Ya-Ping Xie2Xurong Chen3Institute of Modern Physics, Chinese Academy of SciencesSchool of Physics, Zhengzhou UniversityInstitute of Modern Physics, Chinese Academy of SciencesInstitute of Modern Physics, Chinese Academy of SciencesAbstract Generalized distribution amplitudes (GDAs) offer valuable insights into the three-dimensional structure of hadrons, delineating the amplitudes associated with the transition from a quark–antiquark pair to a hadron pair. Currently, hadron GDAs can be probed in electron–positron collisions, with experimental feasibility demonstrated at facilities such as Belle and BESIII. In this study, we put forth the proposition that hadron GDAs can also be investigated in electron–hadron collisions at forthcoming Electron-Ion Colliders (EICs), specifically through the subprocess $$\gamma ^*\gamma \rightarrow h_1 h_2.$$ γ ∗ γ → h 1 h 2 . In this framework, a quasi-real photon, emitted by the ion, exhibits a photon flux proportional to the square of the ion’s electric charge. Consequently, we anticipate that the cross sections in EICs will be substantially larger than those in electron–positron collisions. We present numerical calculations pertaining to di- $$\pi ^0$$ π 0 production employing the equivalent photon approximation (EPA). Our findings suggest that, within the same kinematic region, electron-proton (e-p) collisions at the EIC could yield an event rate comparable to that of Belle II, while electron-gold (e-Au) collisions are expected to generate an even greater number of events. This enhanced event rate facilitates a high-precision examination of di- $$\pi ^0$$ π 0 GDAs at the EIC.https://doi.org/10.1140/epjc/s10052-025-14227-5 |
| spellingShingle | Bing’ang Guo Jing Han Ya-Ping Xie Xurong Chen Di- $$\pi ^0$$ π 0 production and generalized distribution amplitudes at future electron-ion colliders European Physical Journal C: Particles and Fields |
| title | Di- $$\pi ^0$$ π 0 production and generalized distribution amplitudes at future electron-ion colliders |
| title_full | Di- $$\pi ^0$$ π 0 production and generalized distribution amplitudes at future electron-ion colliders |
| title_fullStr | Di- $$\pi ^0$$ π 0 production and generalized distribution amplitudes at future electron-ion colliders |
| title_full_unstemmed | Di- $$\pi ^0$$ π 0 production and generalized distribution amplitudes at future electron-ion colliders |
| title_short | Di- $$\pi ^0$$ π 0 production and generalized distribution amplitudes at future electron-ion colliders |
| title_sort | di pi 0 π 0 production and generalized distribution amplitudes at future electron ion colliders |
| url | https://doi.org/10.1140/epjc/s10052-025-14227-5 |
| work_keys_str_mv | AT bingangguo dipi0p0productionandgeneralizeddistributionamplitudesatfutureelectronioncolliders AT jinghan dipi0p0productionandgeneralizeddistributionamplitudesatfutureelectronioncolliders AT yapingxie dipi0p0productionandgeneralizeddistributionamplitudesatfutureelectronioncolliders AT xurongchen dipi0p0productionandgeneralizeddistributionamplitudesatfutureelectronioncolliders |