Model-independent limits for anomalous triple gauge bosons W+W− γ couplings at the CLIC
Abstract
In this study, we investigate the potential of the γγ → 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 γγ, 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 = 1.5TeV,
L = 5 ab−1@
√
s = 3 TeV and δsys = 0%,5%, 10%, 15% for our study. Using these data,
the strongest limits expected with the γγ → 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 κγ and λγ couplings
with δsys = 0% at 95% C.L. are: κγ = ±0.00007, λγ = [−0.00004, 0.00102],
κγ = ±0.00015, λγ = [−0.00013, 0.00340] and κγ = [−0.00048, 0.00049], λγ =
[−0.00048, 0.00782]. The bounds for κγ and λγ with δsys = 5%, 10%, 15% are weaker
with respect to the bounds obtained with δsys = 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.