Model-independent limits for anomalous triple gauge bosons W+W-γ couplings at the CLIC

In this study, we investigate the potential of the γ γ → W + W - , e + γ → e + γ ∗ γ → e + W - W + and e + e - → e + γ ∗ γ ∗ e - → e + W - W + e - processes at the Compact Linear Collider (CLIC) operating in γ γ , γ ∗ γ and γ ∗ γ ∗ modes to probe the anomalous triple gauge bosons W + W - γ couplings...

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Veröffentlicht in:European physical journal plus 2021-06, Vol.136 (6), p.697, Article 697
Hauptverfasser: Billur, A. A., Köksal, M., Gutiérrez-Rodríguez, A., Hernández-Ruíz, M. A.
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Sprache:eng
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Zusammenfassung:In this study, we investigate the potential of the γ γ → W + W - , e + γ → e + γ ∗ γ → e + W - W + and e + e - → e + γ ∗ γ ∗ e - → e + W - W + e - processes at the Compact Linear Collider (CLIC) operating in γ γ , γ ∗ γ and γ ∗ γ ∗ modes to probe the anomalous triple gauge bosons W + W - γ couplings. To identify the W + W - production in the final state, we consider the leptonic, semi-leptonic and hadronic decays channels. Based on future CLIC data, we assume L = 1 ab - 1 @ s = 0.380 TeV , L = 2.5 ab - 1 @ s = 1.5 TeV , L = 5 ab - 1 @ s = 3 TeV and δ sys = 0 % , 5 % , 10 % , 15 % for our study. Using these data, the strongest limits expected with the γ γ → W + W - , e + γ → e + γ ∗ γ → e + W - W + and e + e - → e + γ ∗ γ ∗ e - → e + W - W + e - processes on the anomalous Δ κ γ and λ γ couplings with δ sys = 0 % at 95 % C.L. are: Δ κ γ = ± 0.00007 , λ γ = [ - 0.00004 , 0.00102 ] , Δ κ γ = ± 0.00015 , λ γ = [ - 0.00013 , 0.00340 ] and Δ κ γ = [ - 0.00048 , 0.00049 ] , λ γ = [ - 0.00048 , 0.00782 ] . The bounds for Δ κ γ and λ γ with δ sys = 5 % , 10 % , 15 % are weaker with respect to the bounds obtained with δ sys = 0 % . These limits show potential sensitivity when compared with those from LHC and HL-LHC data and can be a very promising option to probe the anomalous W + W - γ couplings at the CLIC. In addition, a prominent advantage of these processes is that they isolate anomalous W + W - γ couplings, thus allowing the study of W + W - γ couplings independently from W + W - Z .
ISSN:2190-5444
2190-5444
DOI:10.1140/epjp/s13360-021-01684-6