We study the new $Z'$ boson as a portal for the production of Higgs bosons $h_0$ and $H_0$ predicted by the Bestest Little Higgs Model through Higgs-strahlung processes $\mu^+\mu^- \to (Z, Z') \to Zh_0, ZH_0$ . We focus on the resonant and nonresonant effects of the $Zh_0, ZH_0$ signals. In our analysis, we consider the center-of-mass energies of $\sqrt{s}=3, 4, 6, 10, 30$ TeV and integrated luminosities of ${\cal{L}}=2, 4, 6, 10, 30$ ${ {\rm{ab}}^{-1}}$ projected for a future muon collider. The possibility of performing precision measurements for Higgs bosons $h_0$ and $H_0$ is very promising for the future muon collider. Furthermore, our results may be useful to the High Energy Physics community. Complementarily, we generate and provide the Feynman rules necessary for studying processes $\mu^+\mu^- \to (Z, Z') \to Zh_0, ZH_0$ .

J.M. Martínez-Martínez

A. Gutiérrez-Rodríguez

E. Cruz-Albaro

M.A. Hernández-Ruíz

New $\textit{Z}$' boson of the bestest little Higgs model as a portal to signatures of Higgs bosons $\textit{h}$ $_{0}$ and $\textit{H}$ $_{0}$ at the future muon collider

Gauge boson self-couplings are completely defined by the non-Abelian gauge symmetry of the Standard Model (SM). For this reason, a direct search for these couplings is extremely significant in understanding the gauge structure of the SM. The possible deviation from the SM predictions of gauge boson self-couplings would be a sign of the presence of new physics beyond the SM. In this work, we study the sensitivities on the anomalous couplings defined by dimension-8 operators related to the <math><mi>Z</mi><mi>Z</mi><mi>γ</mi><mi>γ</mi></math> and <math><mi>Z</mi><mi>γ</mi><mi>γ</mi><mi>γ</mi></math> quartic vertices through the process <math><msup><mrow><mi>e</mi></mrow><mrow><mo>+</mo></mrow></msup><msup><mrow><mi>e</mi></mrow><mrow><mo>−</mo></mrow></msup><mo>→</mo><mi>Z</mi><mi>γ</mi><mi>γ</mi></math> with Z-boson decaying to charged leptons at the Compact Linear Collider (CLIC). We analyze the center-of-mass energy of 3 TeV, integrated luminosities of <math><mi>L</mi><mo>=</mo><mn>1</mn><mo>,</mo><mn>4</mn><mo>,</mo><mn>5</mn></math> <math><mi>a</mi><msup><mrow><mi>b</mi></mrow><mrow><mo>−</mo><mn>1</mn></mrow></msup></math>, systematic uncertainties of <math><msub><mrow><mi>δ</mi></mrow><mrow><mi>s</mi><mi>y</mi><mi>s</mi></mrow></msub><mo>=</mo><mn>0</mn><mtext>%</mtext><mo>,</mo><mn>3</mn><mtext>%</mtext><mo>,</mo><mn>5</mn><mtext>%</mtext></math>, unpolarized and polarized electron beams and considering the Initial State Radiation and Beamstrahlung effects for extraction of expected sensitivity on the anomalous <math><msub><mrow><mi>f</mi></mrow><mrow><mi>T</mi><mo>,</mo><mi>j</mi></mrow></msub><mo>/</mo><msup><mrow><mi>Λ</mi></mrow><mrow><mn>4</mn></mrow></msup></math> couplings at 95% confidence level, which are especially sensitive to the Zγγ channel. It is clear from the results that we expect better limits on the couplings if the systematic error is improved. The best limits obtained on the anomalous quartic couplings for the process <math><msup><mrow><mi>e</mi></mrow><mrow><mo>+</mo></mrow></msup><msup><mrow><mi>e</mi></mrow><mrow><mo>−</mo></mrow></msup><mo>→</mo><mi>Z</mi><mi>γ</mi><mi>γ</mi></math> with <math><msqrt><mrow><mi>s</mi></mrow></msqrt><mo>=</mo><mn>3</mn></math> TeV, <math><mi>L</mi><mo>=</mo><mn>5</mn></math> <math><mi>a</mi><msup><mrow><mi>b</mi></mrow><mrow><mo>−</mo><mn>1</mn></mrow></msup></math>, and <math><msub><mrow><mi>δ</mi></mrow><mrow><mi>s</mi><mi>y</mi><mi>s</mi></mrow></msub><mo>=</mo><mn>0</mn><mtext>%</mtext></math> can be approximately improved up to about 1.1 times better than the limits obtained with <math><msub><mrow><mi>δ</mi></mrow><mrow><mi>s</mi><mi>y</mi><mi>s</mi></mrow></msub><mo>=</mo><mn>5</mn><mtext>%</mtext></math>. Our sensitivities on the anomalous quartic couplings can set more stringent sensitivity by two orders of magnitude concerning the best sensitivity derived from the current experimental limits. Finally, with initial electron beam polarization, the sensitivity of the anomalous quartic couplings improves by almost a factor of 1.2.

Türkiye

V. Ari

E. Gurkanli

M. Köksal

Mexico

Study of the projected sensitivity on the anomalous quartic gauge couplings via production at the CLIC

We examine the potential of the <math><msup><mrow><mi>e</mi></mrow><mrow><mo>−</mo></mrow></msup><mi>p</mi><mo>→</mo><msup><mrow><mi>e</mi></mrow><mrow><mo>−</mo></mrow></msup><msup><mrow><mi>γ</mi></mrow><mrow><mo>⁎</mo></mrow></msup><mi>p</mi><mo>→</mo><msup><mrow><mi>e</mi></mrow><mrow><mo>−</mo></mrow></msup><msup><mrow><mi>W</mi></mrow><mrow><mo>−</mo></mrow></msup><msup><mrow><mi>q</mi></mrow><mrow><mo>′</mo></mrow></msup><mi>X</mi></math> (<math><msup><mrow><mi>γ</mi></mrow><mrow><mo>⁎</mo></mrow></msup></math> is the Weizsacker-Williams photon) reaction to probe the non-standard <math><msup><mrow><mi>W</mi></mrow><mrow><mo>+</mo></mrow></msup><msup><mrow><mi>W</mi></mrow><mrow><mo>−</mo></mrow></msup><mi>γ</mi></math> couplings at the Large Hadron electron Collider (LHeC) and the Future Circular Collider-hadron electron (FCC-he). Using the effective Lagrangian approach with various values of the center-of-mass energy and integrated luminosity, we find 95% confidence level bounds on the anomalous coupling <math><mi>Δ</mi><msub><mrow><mi>κ</mi></mrow><mrow><mi>γ</mi></mrow></msub></math> and <math><msub><mrow><mi>λ</mi></mrow><mrow><mi>γ</mi></mrow></msub></math> parameters. We assume center-of-mass energies of the electron-proton system <math><msqrt><mrow><mi>s</mi></mrow></msqrt><mo>=</mo><mn>1.30</mn><mo>,</mo><mn>1.98</mn><mo>,</mo><mn>7.07</mn><mo>,</mo><mn>10</mn><mtext> TeV</mtext></math> and luminosities <math><mi>L</mi><mo>=</mo><mn>10</mn><mo>−</mo><mn>1000</mn><msup><mrow><mtext> fb</mtext></mrow><mrow><mo>−</mo><mn>1</mn></mrow></msup></math>. The best limits obtained from the process <math><msup><mrow><mi>e</mi></mrow><mrow><mo>−</mo></mrow></msup><mi>p</mi><mo>→</mo><msup><mrow><mi>e</mi></mrow><mrow><mo>−</mo></mrow></msup><msup><mrow><mi>γ</mi></mrow><mrow><mo>⁎</mo></mrow></msup><mi>p</mi><mo>→</mo><msup><mrow><mi>e</mi></mrow><mrow><mo>−</mo></mrow></msup><msup><mrow><mi>W</mi></mrow><mrow><mo>−</mo></mrow></msup><msup><mrow><mi>q</mi></mrow><mrow><mo>′</mo></mrow></msup><mi>X</mi></math> on the anomalous <math><mi>Δ</mi><msub><mrow><mi>κ</mi></mrow><mrow><mi>γ</mi></mrow></msub></math> and <math><msub><mrow><mi>λ</mi></mrow><mrow><mi>γ</mi></mrow></msub></math> couplings are <math><mi>Δ</mi><msub><mrow><mi>κ</mi></mrow><mrow><mi>γ</mi></mrow></msub><mo>=</mo><mo>|</mo><mn>0.00069</mn><mo>|</mo></math> and <math><msub><mrow><mi>λ</mi></mrow><mrow><mi>γ</mi></mrow></msub><mo>=</mo><mo>[</mo><mo>−</mo><mn>0.0099</mn><mo>,</mo><mn>0.0054</mn><mo>]</mo></math>. These bounds show that the process under consideration is a very promising option to probe the non-standard <math><mi>Δ</mi><msub><mrow><mi>κ</mi></mrow><mrow><mi>γ</mi></mrow></msub></math> and <math><msub><mrow><mi>λ</mi></mrow><mrow><mi>γ</mi></mrow></msub></math> couplings at the LHeC and the FCC-he. Our results also provide complementary information on other results for <math><mi>Δ</mi><msub><mrow><mi>κ</mi></mrow><mrow><mi>γ</mi></mrow></msub></math> and <math><msub><mrow><mi>λ</mi></mrow><mrow><mi>γ</mi></mrow></msub></math> couplings.

A.A. Billur

Bounds on the non-standard couplings at the LHeC and the FCC-he

In this paper, we study the production of a top-quark in association with a bottom-quark and a electron-neutrino at the Future Circular Collider Hadron Electron (FCC-he) to probe the sensitivity on its magnetic moment <math><mo>(</mo><msub><mrow><mover><mrow><mi>a</mi></mrow><mrow><mo>ˆ</mo></mrow></mover></mrow><mrow><mi>V</mi></mrow></msub><mo>)</mo></math> and its electromagnetic dipole moment <math><mo>(</mo><msub><mrow><mover><mrow><mi>a</mi></mrow><mrow><mo>ˆ</mo></mrow></mover></mrow><mrow><mi>A</mi></mrow></msub><mo>)</mo></math> through the process <math><msup><mrow><mi>e</mi></mrow><mrow><mo>−</mo></mrow></msup><mi>p</mi><mo>→</mo><msup><mrow><mi>e</mi></mrow><mrow><mo>−</mo></mrow></msup><mi>γ</mi><mi>p</mi><mo>→</mo><mover><mrow><mi>t</mi></mrow><mrow><mo>¯</mo></mrow></mover><msub><mrow><mi>ν</mi></mrow><mrow><mi>e</mi></mrow></msub><mi>b</mi><mi>p</mi></math>. Assuming a large amount of collisions, as well as of data with cleaner environments, the FCC-he is an excellent option to study new physics, such as the <math><msub><mrow><mover><mrow><mi>a</mi></mrow><mrow><mo>ˆ</mo></mrow></mover></mrow><mrow><mi>V</mi></mrow></msub></math> and <math><msub><mrow><mover><mrow><mi>a</mi></mrow><mrow><mo>ˆ</mo></mrow></mover></mrow><mrow><mi>A</mi></mrow></msub></math>. For our sensitivity study on <math><msub><mrow><mover><mrow><mi>a</mi></mrow><mrow><mo>ˆ</mo></mrow></mover></mrow><mrow><mi>V</mi></mrow></msub></math> and <math><msub><mrow><mover><mrow><mi>a</mi></mrow><mrow><mo>ˆ</mo></mrow></mover></mrow><mrow><mi>A</mi></mrow></msub></math>, we consider center-of-mass energies <math><msqrt><mrow><mi>s</mi></mrow></msqrt><mo>=</mo><mn>7.07</mn><mo>,</mo><mn>10</mn><mtext> TeV</mtext></math> and luminosities <math><mi>L</mi><mo>=</mo><mn>50</mn><mo>,</mo><mn>100</mn><mo>,</mo><mn>300</mn><mo>,</mo><mn>500</mn><mo>,</mo><mn>1000</mn><msup><mrow><mtext> fb</mtext></mrow><mrow><mo>−</mo><mn>1</mn></mrow></msup></math>. In addition, we apply systematic uncertainties <math><msub><mrow><mi>δ</mi></mrow><mrow><mi>s</mi><mi>y</mi><mi>s</mi></mrow></msub><mo>=</mo><mn>0</mn><mtext>%</mtext><mo>,</mo><mn>3</mn><mtext>%</mtext><mo>,</mo><mn>5</mn><mtext>%</mtext></math> and we consider unpolarized and polarized electron beam. Our results show that the FCC-he is a very good perspective to probe the <math><msub><mrow><mover><mrow><mi>a</mi></mrow><mrow><mo>ˆ</mo></mrow></mover></mrow><mrow><mi>V</mi></mrow></msub></math> and <math><msub><mrow><mover><mrow><mi>a</mi></mrow><mrow><mo>ˆ</mo></mrow></mover></mrow><mrow><mi>A</mi></mrow></msub></math> at high-energy and high-luminosity frontier.

FCC-he sensitivity estimates on the anomalous electromagnetic dipole moments of the top-quark

F. Ramírez-Sánchez

Alejandro González-Sánchez

Corrigendum to “ and Higgs Boson Production Associated with a Top Quark Pair as a Probe of the Model at Colliders”

We study the production sensitivity of Higgs bosons <math id="M4"><mrow><mi>h</mi></mrow></math> and <math id="M5"><mrow><mi>H</mi></mrow></math>, in relation to the possible existence of <math id="M6"><mrow><msup><mrow><mi>Z</mi></mrow><mrow><mi>′</mi></mrow></msup></mrow></math> boson and a top quark pair at the energy scales that will be reached in the near future at projected <math id="M7"><msup><mrow><mi>e</mi></mrow><mrow><mo>+</mo></mrow></msup><msup><mrow><mi>e</mi></mrow><mrow><mo>-</mo></mrow></msup></math> linear colliders. We focus on the resonance and no-resonance effects of the annihilation processes <math id="M8"><msup><mrow><mi>e</mi></mrow><mrow><mo>+</mo></mrow></msup><msup><mrow><mi>e</mi></mrow><mrow><mo>-</mo></mrow></msup><mo>→</mo><mo>(</mo><mi>γ</mi><mo>,</mo><mi>Z</mi><mo>,</mo><msup><mrow><mi>Z</mi></mrow><mrow><mi>′</mi></mrow></msup><mo>)</mo><mo>→</mo><mi>t</mi><mover><mrow><mi>t</mi></mrow><mo>-</mo></mover><mi>h</mi></math> and <math id="M9"><msup><mrow><mi>e</mi></mrow><mrow><mo>+</mo></mrow></msup><msup><mrow><mi>e</mi></mrow><mrow><mo>-</mo></mrow></msup><mo>→</mo><mo>(</mo><mi>γ</mi><mo>,</mo><mi>Z</mi><mo>,</mo><msup><mrow><mi>Z</mi></mrow><mrow><mi>′</mi></mrow></msup><mo>)</mo><mo>→</mo><mi>t</mi><mover><mrow><mi>t</mi></mrow><mo>-</mo></mover><mi>H</mi></math>. Furthermore, we develop and present novel analytical formulas to assess the total cross section involved in the production of Higgs bosons. We find that the possibility of performing precision measurements for the Higgs bosons <math id="M10"><mrow><mi>h</mi></mrow></math> and <math id="M11"><mrow><mi>H</mi></mrow></math> and for the <math id="M12"><mrow><msup><mrow><mi>Z</mi></mrow><mrow><mi>′</mi></mrow></msup></mrow></math> boson is very promising at future <math id="M13"><msup><mrow><mi>e</mi></mrow><mrow><mo>+</mo></mrow></msup><msup><mrow><mi>e</mi></mrow><mrow><mo>-</mo></mrow></msup></math> linear colliders.

F. Ramírez-Sánhez

and Higgs Boson Production Associated with a Top Quark Pair as a Probe of the Model at Colliders

We study the prospects of the <math id="M3"><mi>B</mi><mo>-</mo><mi>L</mi></math> model with an additional <math id="M4"><mrow><msup><mrow><mi>Z</mi></mrow><mrow><mi>′</mi></mrow></msup></mrow></math> boson to be a Higgs boson factory at high-energy and high-luminosity linear electron positron colliders, such as the ILC and CLIC, through the Higgs-strahlung process <math id="M5"><msup><mrow><mi>e</mi></mrow><mrow><mo>+</mo></mrow></msup><msup><mrow><mi>e</mi></mrow><mrow><mo>-</mo></mrow></msup><mo>→</mo><mo>(</mo><mi>Z</mi><mo>,</mo><msup><mrow><mi>Z</mi></mrow><mrow><mi>′</mi></mrow></msup><mo>)</mo><mo>→</mo><mi>Z</mi><mi>h</mi></math>, including both the resonant and the nonresonant effects. We evaluate the total cross section of <math id="M6"><mi>Z</mi><mi>h</mi></math> and we calculate the total number of events for integrated luminosities of 500–2000 fb−1 and center of mass energies between 500 and 3000 GeV. We find that the total number of expected <math id="M7"><mi>Z</mi><mi>h</mi></math> events can reach 106, which is a very optimistic scenario and it would be possible to perform precision measurements for both <math id="M8"><mrow><msup><mrow><mi>Z</mi></mrow><mrow><mi>′</mi></mrow></msup></mrow></math> and Higgs boson in future high-energy <math id="M9"><msup><mrow><mi>e</mi></mrow><mrow><mo>+</mo></mrow></msup><msup><mrow><mi>e</mi></mrow><mrow><mo>-</mo></mrow></msup></math> colliders experiments.