{"about":{"site":"https://codewithpapers.app","non_affiliation":"Code with Papers and Syntology are not affiliated with, endorsed by, or sponsored by Papers with Code, Meta, or the pwc-archive mirror.","licence":"CC BY-SA 4.0","licence_url":"https://creativecommons.org/licenses/by-sa/4.0/legalcode","attribution":"https://codewithpapers.app/attribution","modified":"archive material modified by Syntology; see the attribution page"},"url":"/paper/14074415","title":"The Effect of Doppler Broadening on the $6.3 \\ PeV$ $W^-$ Resonance in $\\barν_e e^-$ Collisions","arxiv_id":"1407.4415","date":"2014-07-16","proceeding":null,"authors":["Amit Loewy","Shmuel Nussinov","Sheldon L. Glashow"],"abstract":"We calculate the Doppler broadening of the $W^-$ resonance produced in $\\bar{\\nu}_e e^-$ collisions of cosmic anti-neutrinos with $E_{\\nu}\\approx 6.3 \\ PeV$ with electrons in atoms up to Iron. Revisiting this issue is prompted by recent observations of PeV neutrinos by Ice-Cube. Despite its poor energy resolution, the $20\\%$ Doppler broadening of the resonance due to electronic motions can produce observable effects via non-linear neutrino absorption near the resonance. The attendant suppression of the peak cross section allows $\\bar{\\nu}_e$ to travel correspondingly longer distances. While this effect is unlikely to be directly detected in the near future, it may facilitate terrestrial tomography at depths of $\\sim 10 \\ km$, complementing deeper explorations using the more frequent nuclear interactions at lower energies.","url_abs":"http://arxiv.org/abs/1407.4415v1","url_pdf":"http://arxiv.org/pdf/1407.4415v1.pdf","source":{"archive":"pwc-archive (Hugging Face), CC BY-SA 4.0","snapshot":"2025-07-28","licence_url":"https://creativecommons.org/licenses/by-sa/4.0/legalcode","row_kind":"links_only","authors_date_abstract":"arXiv metadata, CC0 1.0 (https://info.arxiv.org/help/license), from the Kaggle arXiv metadata snapshot of 2026-09-12"},"code_links":[{"paper_slug":"14074415","repo_url":"https://github.com/tianluyuan/gr_xs","is_official":0,"mentioned_in_paper":0,"mentioned_in_github":1,"framework":"none","reach":null}],"tasks":[],"methods":[],"datasets_introduced":[],"methods_introduced":[],"results":[],"syntology":{"atlas_url":null,"mcp":null,"developers":"https://syntology.ai/developers"},"arxiv_metadata":null,"syntology_extracted_results":null}