Electroweak physics in inclusive deep inelastic scattering at the LHeC
Abstract At the proposed electron-proton collider LHeC electroweak interactions can be uniquely studied in a largely unexplored kinematic region of spacelike momentum transfer. We simulate inclusive neutral- and charged-current deep-inelastic lepton proton scattering cross section data at center-of-...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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SpringerOpen
2020-09-01
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| Series: | European Physical Journal C: Particles and Fields |
| Online Access: | http://link.springer.com/article/10.1140/epjc/s10052-020-8367-y |
| _version_ | 1818845935670657024 |
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| author | Daniel Britzger Max Klein Hubert Spiesberger |
| author_facet | Daniel Britzger Max Klein Hubert Spiesberger |
| author_sort | Daniel Britzger |
| collection | DOAJ |
| description | Abstract At the proposed electron-proton collider LHeC electroweak interactions can be uniquely studied in a largely unexplored kinematic region of spacelike momentum transfer. We simulate inclusive neutral- and charged-current deep-inelastic lepton proton scattering cross section data at center-of-mass energies of 1.2 and 1.3 TeV, and estimate the uncertainties of Standard Model parameters as well as of parameters describing physics beyond the Standard Model. A precision at sub-percent level is expected for the measurement of the weak neutral-current couplings of the light-quarks to the Z boson, $$g_{A/V}^{u/d}$$ g A / V u / d , improving their present precision by more than an order of magnitude. The weak mixing angle can be determined with a precision of about $$\Delta \sin ^2\theta _\text {W}=\pm \,0.00015$$ Δ sin 2 θ W = ± 0.00015 , and its scale dependence can be studied in the range between about 25 and 700 GeV. An indirect determination of the W-boson mass in the on-shell scheme is possible with an experimental uncertainty down to $$\Delta m_{W}=\pm \,6\,\text {MeV}$$ Δ m W = ± 6 MeV . We discuss how measurements in deep-inelastic scattering compare with those in the timelike domain, and which aspects are unique, for instance electroweak parameters in charged-current interactions. We conclude that the LHeC will determine electroweak physics parameters, in the spacelike region, with unprecedented precision leading to thorough tests of the Standard Model and possibly beyond. |
| first_indexed | 2024-12-19T05:37:34Z |
| format | Article |
| id | doaj.art-cb7cc50e1c7047f88fda2e03a3121d05 |
| institution | Directory Open Access Journal |
| issn | 1434-6044 1434-6052 |
| language | English |
| last_indexed | 2024-12-19T05:37:34Z |
| publishDate | 2020-09-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | European Physical Journal C: Particles and Fields |
| spelling | doaj.art-cb7cc50e1c7047f88fda2e03a3121d052022-12-21T20:34:06ZengSpringerOpenEuropean Physical Journal C: Particles and Fields1434-60441434-60522020-09-0180912510.1140/epjc/s10052-020-8367-yElectroweak physics in inclusive deep inelastic scattering at the LHeCDaniel Britzger0Max Klein1Hubert Spiesberger2Max-Planck-Institut für PhysikUniversity of LiverpoolPRISMA+ Cluster of Excellence, Institut für Physik, Johannes-Gutenberg-UniversitätAbstract At the proposed electron-proton collider LHeC electroweak interactions can be uniquely studied in a largely unexplored kinematic region of spacelike momentum transfer. We simulate inclusive neutral- and charged-current deep-inelastic lepton proton scattering cross section data at center-of-mass energies of 1.2 and 1.3 TeV, and estimate the uncertainties of Standard Model parameters as well as of parameters describing physics beyond the Standard Model. A precision at sub-percent level is expected for the measurement of the weak neutral-current couplings of the light-quarks to the Z boson, $$g_{A/V}^{u/d}$$ g A / V u / d , improving their present precision by more than an order of magnitude. The weak mixing angle can be determined with a precision of about $$\Delta \sin ^2\theta _\text {W}=\pm \,0.00015$$ Δ sin 2 θ W = ± 0.00015 , and its scale dependence can be studied in the range between about 25 and 700 GeV. An indirect determination of the W-boson mass in the on-shell scheme is possible with an experimental uncertainty down to $$\Delta m_{W}=\pm \,6\,\text {MeV}$$ Δ m W = ± 6 MeV . We discuss how measurements in deep-inelastic scattering compare with those in the timelike domain, and which aspects are unique, for instance electroweak parameters in charged-current interactions. We conclude that the LHeC will determine electroweak physics parameters, in the spacelike region, with unprecedented precision leading to thorough tests of the Standard Model and possibly beyond.http://link.springer.com/article/10.1140/epjc/s10052-020-8367-y |
| spellingShingle | Daniel Britzger Max Klein Hubert Spiesberger Electroweak physics in inclusive deep inelastic scattering at the LHeC European Physical Journal C: Particles and Fields |
| title | Electroweak physics in inclusive deep inelastic scattering at the LHeC |
| title_full | Electroweak physics in inclusive deep inelastic scattering at the LHeC |
| title_fullStr | Electroweak physics in inclusive deep inelastic scattering at the LHeC |
| title_full_unstemmed | Electroweak physics in inclusive deep inelastic scattering at the LHeC |
| title_short | Electroweak physics in inclusive deep inelastic scattering at the LHeC |
| title_sort | electroweak physics in inclusive deep inelastic scattering at the lhec |
| url | http://link.springer.com/article/10.1140/epjc/s10052-020-8367-y |
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