Testing beyond the Standard Model scenarios in next-generation long-baseline neutrino oscillation experiments
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arXiv
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| Format: | Preprint |
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2026
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| author | Swain, Pragyanprasu |
| author_facet | Swain, Pragyanprasu |
| contents | In this thesis, we assess the sensitivity of next-generation long-baseline neutrino oscillation experiments, DUNE, T2HK, and T2HKK, to three popular beyond the Standard Model (BSM) scenarios. Within the three BSM studies, we examine: (i) long-range neutrino-matter interactions induced by flavor-dependent, anomaly-free gauged baryon-lepton symmetries mediated by ultra-light vector boson, showing that DUNE and T2HK can constrain, discover, and in some favorable cases distinguish among different symmetries; (ii) Lorentz invariance violation (LIV), where we derive analytical dependencies of CPT-conserving and CPT-violating LIV parameters on baseline and energy, highlighting the superior reach of DUNE in probing all the LIV parameters, in contrast to T2HK, which is essentially blind to the CPT-conserving LIV parameters; and (iii) active-sterile oscillations over a broad range of $Δm^2_{41}$, where we derive sensitivity to CP phases for benchmark choices of $Δm^2_{41}$ and establish exclusion limits, emphasizing the role of near detectors. Together, these studies show that future long-baseline facilities not only resolve the neutrino mass ordering, value of $δ_{\rm CP}$, and $θ_{23}$ octant, but also provide powerful probes of BSM physics. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2602_22849 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Testing beyond the Standard Model scenarios in next-generation long-baseline neutrino oscillation experiments Swain, Pragyanprasu High Energy Physics - Phenomenology High Energy Physics - Experiment Instrumentation and Detectors In this thesis, we assess the sensitivity of next-generation long-baseline neutrino oscillation experiments, DUNE, T2HK, and T2HKK, to three popular beyond the Standard Model (BSM) scenarios. Within the three BSM studies, we examine: (i) long-range neutrino-matter interactions induced by flavor-dependent, anomaly-free gauged baryon-lepton symmetries mediated by ultra-light vector boson, showing that DUNE and T2HK can constrain, discover, and in some favorable cases distinguish among different symmetries; (ii) Lorentz invariance violation (LIV), where we derive analytical dependencies of CPT-conserving and CPT-violating LIV parameters on baseline and energy, highlighting the superior reach of DUNE in probing all the LIV parameters, in contrast to T2HK, which is essentially blind to the CPT-conserving LIV parameters; and (iii) active-sterile oscillations over a broad range of $Δm^2_{41}$, where we derive sensitivity to CP phases for benchmark choices of $Δm^2_{41}$ and establish exclusion limits, emphasizing the role of near detectors. Together, these studies show that future long-baseline facilities not only resolve the neutrino mass ordering, value of $δ_{\rm CP}$, and $θ_{23}$ octant, but also provide powerful probes of BSM physics. |
| title | Testing beyond the Standard Model scenarios in next-generation long-baseline neutrino oscillation experiments |
| topic | High Energy Physics - Phenomenology High Energy Physics - Experiment Instrumentation and Detectors |
| url | https://arxiv.org/abs/2602.22849 |