Excess of tau events at SND@LHC, FASER $$\nu $$ ν and FASER $$\nu $$ ν 2
Abstract During the run III of the LHC, the forward experiments FASER $$\nu $$ ν and SND@LHC will be able to detect the Charged Current (CC) interactions of the high energy neutrinos of all three flavors produced at the ATLAS Interaction Point (IP). This opportunity may unravel the mysteries of the...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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SpringerOpen
2022-06-01
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| Series: | European Physical Journal C: Particles and Fields |
| Online Access: | https://doi.org/10.1140/epjc/s10052-022-10512-9 |
| _version_ | 1828468783128248320 |
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| author | Saeed Ansarifard Yasaman Farzan |
| author_facet | Saeed Ansarifard Yasaman Farzan |
| author_sort | Saeed Ansarifard |
| collection | DOAJ |
| description | Abstract During the run III of the LHC, the forward experiments FASER $$\nu $$ ν and SND@LHC will be able to detect the Charged Current (CC) interactions of the high energy neutrinos of all three flavors produced at the ATLAS Interaction Point (IP). This opportunity may unravel the mysteries of the third generation leptons. We build three models that can lead to a tau excess at these detectors through the following Lepton Flavor Violating (LFV) beyond Standard Model (SM) processes: (1) $$\pi ^+ \rightarrow \mu ^+ \nu _\tau $$ π + → μ + ν τ ; (2) $$\pi ^+ \rightarrow \mu ^+ \bar{\nu }_\tau $$ π + → μ + ν ¯ τ and (3) $$\nu _e+\mathrm{nucleus}\rightarrow \tau +X$$ ν e + nucleus → τ + X . We comment on the possibility of solving the $$(g-2)_\mu $$ ( g - 2 ) μ anomaly and the $$\tau $$ τ decay anomalies within these models. We study the potential of the forward experiments to discover the $$\tau $$ τ excess or to constrain these models in case of no excess. We then compare the reach of the forward experiments with that of the previous as well as next generation experiments such as DUNE. We also discuss how the upgrade of FASER $$\nu $$ ν can distinguish between these models by studying the energy spectrum of the tau. |
| first_indexed | 2024-12-11T04:29:23Z |
| format | Article |
| id | doaj.art-9d0a83d346d24948a69590a8fb95877a |
| institution | Directory Open Access Journal |
| issn | 1434-6052 |
| language | English |
| last_indexed | 2024-12-11T04:29:23Z |
| publishDate | 2022-06-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | European Physical Journal C: Particles and Fields |
| spelling | doaj.art-9d0a83d346d24948a69590a8fb95877a2022-12-22T01:20:55ZengSpringerOpenEuropean Physical Journal C: Particles and Fields1434-60522022-06-0182611510.1140/epjc/s10052-022-10512-9Excess of tau events at SND@LHC, FASER $$\nu $$ ν and FASER $$\nu $$ ν 2Saeed Ansarifard0Yasaman Farzan1School of physics, Institute for Research in Fundamental Sciences (IPM)School of physics, Institute for Research in Fundamental Sciences (IPM)Abstract During the run III of the LHC, the forward experiments FASER $$\nu $$ ν and SND@LHC will be able to detect the Charged Current (CC) interactions of the high energy neutrinos of all three flavors produced at the ATLAS Interaction Point (IP). This opportunity may unravel the mysteries of the third generation leptons. We build three models that can lead to a tau excess at these detectors through the following Lepton Flavor Violating (LFV) beyond Standard Model (SM) processes: (1) $$\pi ^+ \rightarrow \mu ^+ \nu _\tau $$ π + → μ + ν τ ; (2) $$\pi ^+ \rightarrow \mu ^+ \bar{\nu }_\tau $$ π + → μ + ν ¯ τ and (3) $$\nu _e+\mathrm{nucleus}\rightarrow \tau +X$$ ν e + nucleus → τ + X . We comment on the possibility of solving the $$(g-2)_\mu $$ ( g - 2 ) μ anomaly and the $$\tau $$ τ decay anomalies within these models. We study the potential of the forward experiments to discover the $$\tau $$ τ excess or to constrain these models in case of no excess. We then compare the reach of the forward experiments with that of the previous as well as next generation experiments such as DUNE. We also discuss how the upgrade of FASER $$\nu $$ ν can distinguish between these models by studying the energy spectrum of the tau.https://doi.org/10.1140/epjc/s10052-022-10512-9 |
| spellingShingle | Saeed Ansarifard Yasaman Farzan Excess of tau events at SND@LHC, FASER $$\nu $$ ν and FASER $$\nu $$ ν 2 European Physical Journal C: Particles and Fields |
| title | Excess of tau events at SND@LHC, FASER $$\nu $$ ν and FASER $$\nu $$ ν 2 |
| title_full | Excess of tau events at SND@LHC, FASER $$\nu $$ ν and FASER $$\nu $$ ν 2 |
| title_fullStr | Excess of tau events at SND@LHC, FASER $$\nu $$ ν and FASER $$\nu $$ ν 2 |
| title_full_unstemmed | Excess of tau events at SND@LHC, FASER $$\nu $$ ν and FASER $$\nu $$ ν 2 |
| title_short | Excess of tau events at SND@LHC, FASER $$\nu $$ ν and FASER $$\nu $$ ν 2 |
| title_sort | excess of tau events at snd lhc faser nu ν and faser nu ν 2 |
| url | https://doi.org/10.1140/epjc/s10052-022-10512-9 |
| work_keys_str_mv | AT saeedansarifard excessoftaueventsatsndlhcfasernunandfasernun2 AT yasamanfarzan excessoftaueventsatsndlhcfasernunandfasernun2 |