Signals of strong parity violation in deep inelastic scattering
Fuente:
arXiv
Saved in:
| Main Authors: | , , , , |
|---|---|
| Format: | Preprint |
| Published: |
2023
|
| Subjects: | |
| Online Access: | |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1866910297256624128 |
|---|---|
| author | Bacchetta, Alessandro Cerutti, Matteo Manna, Ludovico Radici, Marco Zheng, Xiaochao |
| author_facet | Bacchetta, Alessandro Cerutti, Matteo Manna, Ludovico Radici, Marco Zheng, Xiaochao |
| contents | We include strong parity-violating contributions to inclusive deep inelastic scattering (DIS) of longitudinally polarized leptons off an unpolarized target. At variance with standard results, we obtain nonvanishing parity-violating structure functions in the case of pure photon exchange. The addition of these strong parity-violating contributions improves the description of existing experimental data on DIS parity-violating asymmetries. We find the size of these contributions small but exhibiting a deviation from zero of about 1.5 $σ$. The associated $p$-value is 0.063, indicating that the probability of making an error by rejecting the hypothesis of no parity-violating contributions is 6.3\%, which is small but not negligible. Further improvement on the limit of the strong parity-violation can be expected from the future SoLID program at Jefferson Lab. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2306_04704 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Signals of strong parity violation in deep inelastic scattering Bacchetta, Alessandro Cerutti, Matteo Manna, Ludovico Radici, Marco Zheng, Xiaochao High Energy Physics - Phenomenology High Energy Physics - Experiment Nuclear Experiment Nuclear Theory We include strong parity-violating contributions to inclusive deep inelastic scattering (DIS) of longitudinally polarized leptons off an unpolarized target. At variance with standard results, we obtain nonvanishing parity-violating structure functions in the case of pure photon exchange. The addition of these strong parity-violating contributions improves the description of existing experimental data on DIS parity-violating asymmetries. We find the size of these contributions small but exhibiting a deviation from zero of about 1.5 $σ$. The associated $p$-value is 0.063, indicating that the probability of making an error by rejecting the hypothesis of no parity-violating contributions is 6.3\%, which is small but not negligible. Further improvement on the limit of the strong parity-violation can be expected from the future SoLID program at Jefferson Lab. |
| title | Signals of strong parity violation in deep inelastic scattering |
| topic | High Energy Physics - Phenomenology High Energy Physics - Experiment Nuclear Experiment Nuclear Theory |
| url | https://arxiv.org/abs/2306.04704 |