Indirect studies of electroweakly interacting particles at 100 TeV hadron colliders

Abe, Tomohiro; Chigusa, So; Ema, Yohei; Moroi, Takeo

doi:10.1103/physrevd.100.055018

“…[48], future collider sensitivities may reach m χ ± 1 1.2-1.3 TeV by analyzing the NC/HW channel at the HL-LHC [101,102], and m χ ± 1 1.4 (3.4) TeV at a future 100 TeV pp collider [103,104]. Besides, the electroweakinos will be able to be probed indirectly [105][106][107][108], e.g., for m χ ± 1 1.7-2.3 TeV at a 100 TeV pp collider. Note that since these evaluations were performed on the simplified models, i.e., the sensitivities would be degraded in realistic setups.…”

Section: Conclusion and Discussionmentioning

confidence: 99%

Supersymmetric interpretation of the muon g – 2 anomaly

Endo

¹

,

Hamaguchi

²

,

Iwamoto

³

et al. 2021

J. High Energ. Phys.

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The Fermilab Muon g− 2 collaboration recently announced the first result of measurement of the muon anomalous magnetic moment (g− 2), which confirmed the previous result at the Brookhaven National Laboratory and thus the discrepancy with its Standard Model prediction. We revisit low-scale supersymmetric models that are naturally capable to solve the muon g− 2 anomaly, focusing on two distinct scenarios: chargino-contribution dominated and pure-bino-contribution dominated scenarios. It is shown that the slepton pair-production searches have excluded broad parameter spaces for both two scenarios, but they are not closed yet. For the chargino-dominated scenario, the models with $$ {m}_{{\tilde{\mu}}_{\mathrm{L}}}\gtrsim {m}_{{\tilde{\chi}}_1^{\pm }} $$ m μ ˜ L ≳ m χ ˜ 1 ± are still widely allowed. For the bino-dominated scenario, we find that, although slightly non-trivial, the region with low tan β with heavy higgsinos is preferred. In the case of universal slepton masses, the low mass regions with $$ {m}_{\tilde{\mu}} $$ m μ ˜ ≲ 230 GeV can explain the g− 2 anomaly while satisfying the LHC constraints. Furthermore, we checked that the stau-bino coannihilation works properly to realize the bino thermal relic dark matter. We also investigate heavy staus case for the bino-dominated scenario, where the parameter region that can explain the muon g− 2 anomaly is stretched to $$ {m}_{\tilde{\mu}} $$ m μ ˜ ≲ 1.3 TeV.

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“…[48], future collider sensitivities may reach m χ ± 1 1.2-1.3 TeV by analyzing the NC/HW channel at the HL-LHC [101,102], and m χ ± 1 1.4 (3.4) TeV at a future 100 TeV pp collider [103,104]. Besides, the electroweakinos will be able to be probed indirectly [105][106][107][108], e.g., for m χ ± 1 1.7-2.3 TeV at a 100 TeV pp collider. Note that since these evaluations were performed on the simplified models, i.e., the sensitivities would be degraded in realistic setups.…”

Section: Conclusion and Discussionmentioning

confidence: 99%

Supersymmetric Interpretation of the Muon $g-2$ Anomaly

Endo,

Hamaguchi,

Iwamoto

et al. 2021

Preprint

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The Fermilab Muon g − 2 collaboration recently announced the first result of measurement of the muon anomalous magnetic moment (g − 2), which confirmed the previous result at the Brookhaven National Laboratory and thus the discrepancy with its Standard Model prediction. We revisit low-scale supersymmetric models that are naturally capable to solve the muon g − 2 anomaly, focusing on two distinct scenarios: charginocontribution dominated and pure-bino-contribution dominated scenarios. It is shown that the slepton pair-production searches have excluded broad parameter spaces for both two scenarios, but they are not closed yet. For the chargino-dominated scenario, the models with m µL m χ ± 1 are still widely allowed. For the bino-dominated scenario, we find that, although slightly non-trivial, the region with low tan β with heavy higgsinos is preferred. In the case of universal slepton masses, the low mass regions with m µ 230 GeV can explain the g − 2 anomaly while satisfying the LHC constraints. Furthermore, we checked that the stau-bino coannihilation works properly to realize the bino thermal relic dark matter. We also investigate heavy staus case for the bino-dominated scenario, where the parameter region that can explain the muon g − 2 anomaly is stretched to m µ 1.3 TeV.

show abstract

“…[79,80], the HL-LHC may test the region with m χ ± [75,81]. Indirect searches at future colliders also probe the electroweakinos [82][83][84][85]; for example, a 100 TeV pp collider has potential to exclude charginos with m χ ± 1 1.7-2.3 TeV. If the muon g − 2 anomaly is strengthened and confirmed by the future experimental and theoretical studies, it will be a strong motivation for the BSM physics at around the electroweak scale, including the low energy SUSY.…”

Section: Conclusion and Discussionmentioning

confidence: 99%

Muon g − 2 vs LHC Run 2 in supersymmetric models

Endo

¹

,

Hamaguchi

²

,

Iwamoto

³

et al. 2020

J. High Energ. Phys.

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Supersymmetric models with sub-TeV charginos and sleptons have been a candidate for the origin of the long-standing discrepancy in the muon anomalous magnetic moment (g − 2). By gathering all the available LHC Run 2 results, we investigate the latest LHC constraints on models that explain the anomaly by their chargino contribution to the muon g − 2. It is shown that the parameter regions where sleptons are lighter than charginos are strongly disfavored. In contrast, we find that the models with m µL m χ ± 1 are still widely allowed, where the lighter chargino dominantly decays into a W -boson and a neutralino.

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Indirect studies of electroweakly interacting particles at 100 TeV hadron colliders

Cited by 10 publications

References 36 publications

Supersymmetric interpretation of the muon g – 2 anomaly

Supersymmetric interpretation of the muon g – 2 anomaly

Supersymmetric Interpretation of the Muon $g-2$ Anomaly

Muon g − 2 vs LHC Run 2 in supersymmetric models

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