Search

Spontaneous breaking of the $SU(2)_{L}\times U(1)_{Y}$ electroweak symmetry of the Standard Model (SM) sets the constraints on triple gauge couplings and quartic gauge couplings. Therefore, the measurement of multiboson production in $e^{-} e^{+}$ collisions allows us to directly examine the SM predictions and perform indirect investigations of new physics beyond the SM. In this paper, we concentrate the process $e^{-} e^{+} \to e^{-} Z\gamma e^{+}$ with $Z$ boson decaying to neutrinos to investigate the anomalous quartic gauge couplings using the effective Lagrangian approach at the Compact Linear Collider (CLIC). We obtain the sensitivities on the anomalous $ f_ {Ti}/\Lambda^4$ ($i=0,2,5,6,7,8,9$) couplings taking into account the systematic uncertainties of $3, 5 \%$ at $95\%$ Confidence Level for the CLIC with $\sqrt{s}=3$ TeV. Our results show that the sensitivities on some anomalous couplings without systematic errors are up to two orders of magnitude better than the current experimental limits. Considering a realistic systematic uncertainty such as $5 \%$ from possible experimental sources, the sensitivity of all anomalous quartic couplings gets worse by about $10\%$ compared to those without systematic uncertainty for the CLIC., Comment: 23 Pages, 10 Figures, 2 Tables

This work offers the constraints on the anomalous neutral triple gauge couplings (aNTGC) for the process $e^+e^- \to ZZ $ at the CLIC with $\sqrt{s}=3$ TeV. The realistic CLIC detector environments and their effects are considered in our analysis. The study is planned for the decays of producted $Z$ bosons to a pair of charged leptons (electrons or muons) and neutrino pairs. The bounds on the aNTGCs defining $CP$-conserving $C_{\widetilde{B}W}/{\Lambda^4}$ coupling and three $CP$-violating $C_{WW}/{\Lambda^4}$, $C_{BW}/{\Lambda^4}$, and $C_{BB}/{\Lambda^4}$ couplings are obtained. Also, the effects and advantages of polarization for incoming electron beams in these calculations are investigated., Comment: 21 pages, 14 figures

In this study, we investigate the potential of $\mu^{-} \mu^{+}\to Z\gamma \to \nu\bar{\nu}\gamma$ process at the future muon collider with a center-of-mass energy of 3 TeV to examine the anomalous $ZZ\gamma$ and $Z\gamma\gamma$ neutral triple gauge couplings defining $CP$-conserving $C_{\widetilde{B}W}/{\Lambda^4}$ coupling and three $CP$-violating $C_{BB}/{\Lambda^4}$, $C_{BW}/{\Lambda^4}$, $C_{WW}/{\Lambda^4}$ couplings. All signal and relevant background events are generated in MadGraph and passed through Pythia for parton showering and hadronization. Detector effects are also considered via tuned muon detector cards in Delphes. The effects of systematic uncertainties of $0\%$, $3\%$ and $5\%$ on the sensitivities are studied. The best sensitivities obtained from the process $\mu^{-} \mu^{+}\to Z\gamma \to \nu\bar{\nu}\gamma$ are $[-6.53;6.64]\times10^{-2}$ TeV$^{-4}$ on $CP$-conserving $C_{\widetilde{B}W}/{\Lambda^4}$ coupling and $[-2.47;2.47]\times10^{-2}$ TeV$^{-4}$, $[-8.46;8.46]\times10^{-2}$ TeV$^{-4}$ and $[-2.20;2.20]\times10^{-1}$ TeV$^{-4}$ on $CP$-conserving $C_{BB}/{\Lambda^4}$, $C_{BW}/{\Lambda^4}$, $C_{WW}/{\Lambda^4}$ couplings , respectively. Our obtained results on the anomalous neutral gauge couplings set more stringent sensitivity, ranging between 5 and 15 times than the current experimental results while slightly better than the phenomenological studies at future pp colliders such as the HL-LHC, the HE-LHC and the FCC-hh, respectively. On the other hand, we can see that the bounds on the anomalous neutral gauge couplings expected to be obtained for the future $e^{-}e^{+}$ colliders such as the CLIC are roughly 2 times better than our results., Comment: 21 pages, 9 figures

The non-Abelian gauge structure of the Standard Model implies the presence of the multi-boson self-interactions. Precise measurements in experimental and theoretical studies of these interactions allow not only testing the nature of the Standard Model but also new physics contribution coming from the beyond Standard Model. These interactions can be examined using a model-independent way in effective theory approach that composes the motivation part of this study. In this paper, we examine the anomalous ZZγ and Zγγ neutral triple gauge couplings via the process e−e+→Zγ for the neutrino-antineutrino pair decay of Z boson. It has performed with both unpolarized and polarized electron beams at the Compact Linear Collider with s=3 TeV. The study focused on CP-conserving CB˜W/Λ4 and CP-violating CBB/Λ4, CBW/Λ4, CWW/Λ4 couplings. Obtained sensitivities on the anomalous neutral triple gauge couplings with 95% Confidence Level are given with systematic uncertainties of 0%, 5% and 10% for unpolarized, −80% and 80% polarized electron beams with integrated luminosities of Lint=5 ab−1, Lint=4 ab−1 and Lint=1 ab−1, respectively. Comparing the latest experimental limits and related phenomenological studies, our results on the anomalous neutral gauge couplings are set more stringent sensitivity between 10-30 times of magnitude.

The non-Abelian gauge structure of the Standard Model implies the presence of the multi-boson self-interactions. Precise measurements in experimental and theoretical studies of these interactions allow not only testing the nature of the Standard Model but also new physics contribution coming from the beyond Standard Model. These interactions can be examined using a model-independent way in effective theory approach that composes the motivation part of this study. In this paper, we examine the anomalous $ZZ\gamma$ and $Z\gamma\gamma$ neutral triple gauge couplings via the process $e^{-} e^{+}\to Z\gamma$ for the neutrino-antineutrino pair decay of $Z$ boson. It has performed with both unpolarized and polarized electron beams at the Compact Linear Collider with $\sqrt{s}= 3$ TeV. The study focused on $CP$-conserving $C_{\widetilde{B}W}/{\Lambda^4}$ and $CP$-violating $C_{BB}/{\Lambda^4}$, $C_{BW}/{\Lambda^4}$, $C_{WW}/{\Lambda^4}$ couplings. Obtained sensitivities on the anomalous neutral triple gauge couplings with $95\%$ Confidence Level are given with systematic uncertainties of $0\%$, $5\%$ and $10\%$ for unpolarized, $-80\%$ and $80\%$ polarized electron beams with integrated luminosities of ${\cal L}_{\text{int}}=5$ $\rm ab^{-1}$, ${\cal L}_{\text{int}}=4$ $\rm ab^{-1}$ and ${\cal L}_{\text{int}}=1$ $\rm ab^{-1}$, respectively. Comparing the latest experimental limits and related phenomenological studies, our results on the anomalous neutral gauge couplings are set more stringent sensitivity between 10-30 times of magnitude., Comment: 21 pages, 11 figures, 3 tables

In this study, we investigate the process $pp \rightarrow W^{\pm} \gamma$ for the physics potential of the FCC-hh with $\sqrt{s}=100$ TeV to examine the anomalous $WW\gamma$ couplings defined by three CP-conserving and two CP-violating effective operators of dimension-6. The analysis containing the realistic detector effects is carried out in the mode where $W^{\pm}$ bosons in the final state decay into the leptonic channel. The best sensitivities obtained from the process $pp \rightarrow W^{\pm} \gamma$ on the anomalous couplings $C_{WWW}/ \Lambda^{2}$ and $C_{W,B}/ \Lambda^{2}$ determined by CP-conserving effective Lagrangians are $[-0.01; 0.01]$ TeV$^{-2}$ and $[-0.88; 0.88]$ TeV$^{-2}$, while $C_{\tilde{W}WW}/ \Lambda^{2}$ and $C_{\tilde{W}}/ \Lambda^{2}$ couplings defined by CP-violating effective Lagrangian are obtained as $[-0.03; 0.03]$ TeV$^{-2}$ and $[-0.47; 0.47]$ TeV$^{-2}$ at the FCC-hh with $\sqrt{s}=100$ TeV, $L_{int}=30$ ab$^{-1}$. However, if the systematic uncertainty is included, we obtain reduced sensitivities on the anomalous $WW\gamma$ coupling . The results are compared for assumed systematics of $5\%$ and $10\%$., Comment: 17 pages, 6 Figures and Tables IV

The pursuit of discovery in particle physics has always required study at the highest possible energies. Multi-TeV muon colliders, which have important advantages, offer unprecedented potential for investigating new physics beyond the Standard Model. We extensively assume a range of center-of-mass energies from 3 to 100 TeV and a range of integrated luminosities from 1 to 1000 ab$^{-1}$ for future multi-TeV muon colliders. We perform a phenomenological study of the anomalous $WW\gamma$ couplings via the process $\mu^+ \mu^-\,\rightarrow\,\mu^+\gamma^* \mu^-\,\rightarrow\,\mu^+W^-\nu_\mu$ using a model-independent analysis in the effective field theory framework at multi-TeV muon colliders. The sensitivity estimates obtained for the anomalous $WW\gamma$ couplings at systematic uncertainties of $\delta_{sys}=0$, $3$, $5\%$ are compared with the experimental results. Our best sensitivity limits at 95$\%$ confidence level for $c_{WWW}/{\Lambda^2}$, $c_{\widetilde{W}WW}/\Lambda^2$, $c_{B}/{\Lambda^2}$, $c_{W}/{\Lambda^2}$ and $c_{\widetilde{W}}/\Lambda^2$ couplings are $[-0.00480; 0.00559]\,\text{TeV}^{-2}$, $[-0.00256; 0.00262]\,\text{TeV}^{-2}$, $[-0.03965; 0.03975]\,\text{TeV}^{-2}$, $[-0.03874; 0.03886]\,\text{TeV}^{-2}$ and $[-0.54591; 0.54689]\,\text{TeV}^{-2}$ at the multi-TeV muon collider with center-of-mass energy of 100 TeV and integrated luminosity of 1000 ab$^{-1}$, respectively., Comment: 23 pages, 4 figures, 9 tables

The Large Hadron-Electron Collider (LHeC) is designed to move the field of deep inelastic scattering (DIS) to the energy and intensity frontier of particle physics. Exploiting energy-recovery technology, it collides a novel, intense electron beam with a proton or ion beam from the High-Luminosity Large Hadron Collider (HL-LHC). The accelerator and interaction region are designed for concurrent electron-proton and proton-proton operations. This report represents an update to the LHeC's conceptual design report (CDR), published in 2012. It comprises new results on the parton structure of the proton and heavier nuclei, QCD dynamics, and electroweak and top-quark physics. It is shown how the LHeC will open a new chapter of nuclear particle physics by extending the accessible kinematic range of lepton-nucleus scattering by several orders of magnitude. Due to its enhanced luminosity and large energy and the cleanliness of the final hadronic states, the LHeC has a strong Higgs physics programme and its own discovery potential for new physics. Building on the 2012 CDR, this report contains a detailed updated design for the energy-recovery electron linac (ERL), including a new lattice, magnet and superconducting radio-frequency technology, and further components. Challenges of energy recovery are described, and the lower-energy, high-current, three-turn ERL facility, PERLE at Orsay, is presented, which uses the LHeC characteristics serving as a development facility for the design and operation of the LHeC. An updated detector design is presented corresponding to the acceptance, resolution, and calibration goals that arise from the Higgs and parton-density-function physics programmes. This paper also presents novel results for the Future Circular Collider in electron-hadron (FCC-eh) mode, which utilises the same ERL technology to further extend the reach of DIS to even higher centre-of-mass energies., Journal of Physics G: Nuclear and Particle Physics, 48 (11), ISSN:0305-4616, ISSN:0954-3899, ISSN:1361-6471, ISSN:0954-3889

The potential of the process γγ→ττ¯γ is examined in a model-independent way using the effective Lagrangian approach for the International Linear Collider, a proposed electron-positron machine which is designed with standard configurations of 0.25 TeV/2000 fb$^{−1}$, 0.35 TeV/200 fb$^{−1}$ and 0.5 TeV/4000 fb$^{−1}$. The limits obtained for the tau lepton's anomalous magnetic dipole moment a˜τ and the tau lepton's anomalous electric dipole moment d˜τ defining the anomalous ττ¯γ couplings at 95% confidence level and systematic uncertainties of δsys=0,5,10% are compared with the experimental results. The best limits obtained with δsys=0% on the anomalous couplings are −0.00082

We investigate the anomalous W+W−γ couplings through the process e−e+→νeν‾eγ for unpolarized and polarized electron (positron) beams at the International Linear Collider. We give the 95% Confidence Level limits on the anomalous couplings with and without the systematic uncertainties for various values of center-of-mass energies and the integrated luminosities. We show that the obtained limits on the anomalous couplings through the process e−e+→νeν‾eγ can highly improve the current experimental limits.

The potential of the process $\gamma \gamma \rightarrow \tau \bar{\tau}\gamma$ is examined in a model-independent way using the effective Lagrangian approach for the ILC which is designed with standard configurations of 0.25 TeV/2000 fb$^{-1}$, 0.35 TeV/200 fb$^{-1}$ and 0.5 TeV/4000 fb$^{-1}$. The limits obtained for $\tilde{a}_{\tau}$ and $\tilde{{d}_{\tau}}$ parameters defining the anomalous $\tau \bar{\tau}\gamma$ couplings at $95\%$ confidence level and systematic uncertainties of $\delta_{sys}=0,5,10 \%$ are compared with the experimental results. The best limits obtained without systematic error on the anomalous couplings are $-0.00082, Comment: 23 pages, 15 figures, 8 tables

We carry out a study in the approach of a dimension-8 effective field theory on the anomalous quartic $WW\gamma\gamma$ couplings that arise from the process $pp \to W\gamma\gamma$ at the Future Circular Collider-hadron hadron (FCC-hh). The process is sensitive to the $WW\gamma\gamma$ vertex, and future projections on the anomalous $f_ {M,i}/\Lambda^4$ and $ f_ {T,j}/\Lambda^4$ couplings can be put by measurements of $W\gamma\gamma$ production. We illustrate the physics opportunities and reach of the FCC-hh operating for a high integrated luminosity scenario of ${\cal L}=1, 5, 10, 30$ ${\rm ab}^{-1}$ of proton-proton collisions at a center-of-mass energy of $\sqrt{s}=100$ TeV and systematic uncertainties of $\delta_{sys}=0\%, 3\%, 5\%, 10\%$. Production cross-sections of the signal and the sensitivity constraints on the anomalous $f_ {M,i}/\Lambda^4$ and $ f_ {T,j}/\Lambda^4$ couplings at $95\%$ C.L. are identified through the leptonic and hadronic decay modes of the $W$-boson. The FCC-hh sensitivity on these anomalous couplings is expected might reach up to the order of magnitude ${\cal O}(10^{-4}-10^1)$. These sensitivity perspectives indicate that the $pp \to W\gamma\gamma$ channel at the FCC-hh has a greater potential to search for the anomalous quartic $WW\gamma\gamma$ couplings and to search for new physics than present colliders., Comment: 29 pages, 8 figures

In this paper, a study is carried out on the $$e^-p \rightarrow e^-\gamma ^* p \rightarrow p W^-\gamma \nu _e$$ e - p → e - γ ∗ p → p W - γ ν e production to probe quartic $$W^+W^-\gamma \gamma $$ W + W - γ γ couplings at the Large Hadron electron Collider (LHeC) with $$\sqrt{s}= 1.30, 1.98\,\hbox {TeV}$$ s = 1.30 , 1.98 TeV and at the Future Circular Collider-hadron electron (FCC-he) with $$\sqrt{s}= 3.46, 5.29\,\hbox {TeV}$$ s = 3.46 , 5.29 TeV . Production cross-sections are determined for both at leptonic and hadronic decay channels of the W-boson. With the data from future $$e^-p$$ e - p colliders, it is possible to obtain sensitivity measures at $$95\%$$ 95 % C.L. on the anomalous $$f_ {M,i}/\Lambda ^4$$ f M , i / Λ 4 and $$ f_ {T,j}/\Lambda ^4$$ f T , j / Λ 4 couplings which are competitive with the limits obtained by the LHC, as well as with others limits reported in the literature. The production mode $$e^-p \rightarrow e^-\gamma ^* p \rightarrow p W^-\gamma \nu _e $$ e - p → e - γ ∗ p → p W - γ ν e in $$e^-p$$ e - p collisions offers a window for study the quartic $$W^+W^-\gamma \gamma $$ W + W - γ γ electroweak bosons couplings at the LHeC and the FCC-he, which provides a much cleaner collision environment than the LHC.

We investigate the anomalous $W^+W^-\gamma$ couplings through the process $e^-e^+\,\rightarrow\,\nu_e\bar{\nu}_e\gamma$ for unpolarized and polarized electron (positron) beams at the International Linear Collider. We give the 95$\%$ Confidence Level limits on the anomalous couplings with and without the systematic uncertainties for various values of center-of-mass energies and the integrated luminosities. We show that the obtained limits on the anomalous couplings through the process $e^-e^+\,\rightarrow\,\nu_e\bar{\nu}_e\gamma$ can highly improve the current experimental limits., Comment: 28 pages, 9 figures, 7 tables

We investigate the potential of the Compact Linear Collider (CLIC) to probe the anomalous $W^+W^-\gamma$ coupling in $\gamma\gamma$, $\gamma\gamma^*$ and $\gamma^*\gamma^*$ collisions through the processes $\gamma\gamma\rightarrow W^+ W^-$, $e^+ \gamma \rightarrow e^+ \gamma^{*} \gamma \rightarrow e^+ W^- W^+$ and $e^+ e^-\rightarrow e^+ \gamma^{*} \gamma^{*} e^- \rightarrow e^+ W^- W^+ e^-$. We perform leptonic, semi-leptonic and hadronic decays channels for $W^+W^-$ production in the final state. Taking ${\cal L}=1\hspace{0.8mm}{\rm ab^{-1}}@ \sqrt{s}=0.380\hspace{0.8mm}{\rm TeV}$, ${\cal L}=2.5\hspace{0.8mm}{\rm ab^{-1}}@ \sqrt{s}=1.5\hspace{0.8mm}{\rm TeV}$ and ${\cal L}=5\hspace{0.8mm}{\rm ab^{-1}}@ \sqrt{s}=3\hspace{0.8mm}{\rm TeV}$, based on future CLIC data, the limits for $\Delta\kappa_\gamma$ and $\lambda_\gamma$ might reach up to ${\cal O}(10^{-5}-10^{-4})$ level in the most ideal with 5\hspace{0.8mm}${\rm ab^{-1}}$ set data, which shows a potential advantage compared to those from LHC, Tevatron and LEP data. Thus, our results represent that the processes $\gamma\gamma\rightarrow W^+ W^-$, $e^+ \gamma \rightarrow e^+ \gamma^{*} \gamma \rightarrow e^+ W^- W^+$ and $e^+ e^-\rightarrow e^+ \gamma^{*} \gamma^{*} e^- \rightarrow e^+ W^- W^+ e^-$ at the CLIC are a very good prospect for probing the anomalous $W^+W^-\gamma$ couplings., Comment: 30 pages, 17 figures and 11 tables

In this paper, we present detailed studies on the feasibility at $pp$, $e^-p$ and $e^+e^-$ colliders for model-independent sensitivity estimates on the total cross-section and on the anomalous $\tau^+\tau^-\gamma$ interaction through the tau pair production channels $pp \to p\tau\bar \tau \gamma p$, $e^-p \to e^- \tau\bar \tau \gamma p$ and $e^+e^- \to e^+ \tau\bar \tau \gamma e^-$ at the $\gamma^*\gamma^* \to \tau^+\tau^-\gamma$ mode. Measurements of the anomalous couplings of the $\tau$-lepton $\tilde{a}_\tau$ and $\tilde{d}_\tau$ provide an excellent opportunity to probing extensions of the Standard Model. We estimate the sensitivity at the $95\%$ Confidence Level, and we consider that the $\tau$-lepton decays leptonically or semi-leptonically. We found that of the three considered colliders, the future CLIC at high energy and high luminosity should provide the best sensitivity on the dipole moments of the $\tau$-lepton $\tilde a_\tau= [-0.00128, 0.00105]$ and $ |\tilde{d}_\tau({\rm ecm})|= 6.4394\times 10^{-18}$, which show a potential advantage compared to those from LHC and FCC-he., Comment: 36 pages, 20 Figures, and 5 Tables

Tulum, Gökalp (Arel Author), Osman, Onur (Arel Author), Background: Computer-aided detection in the setting of trauma presents unique challenges due to variations in shape and attenuation of the injured organs based on the timing and severity of the injury. We developed and validated an automated computer-aided diagnosis algorithm to detect splenic lesions such as laceration, contusion, subcapsular hematoma, perisplenic hematoma, and active extravasation using computed tomography (CT) images in patients sustaining blunt or penetrating abdominal trauma. Methods: We categorized the splenic pathologies into three groups: contusion/laceration, hematoma, and active extravasation. We first analyzed the spleen and perisplenic region by estimating the mean value and standard deviation of the spleen. We determined adaptive threshold values based on the histogram of the area and detected the lesions after morphological operations and volumetric comparisons. Results: The overall performance of the three computer-aided diagnosis (CAD) algorithms is an accuracy of 0.80, sensitivity of 0.95, specificity of 0.67, and a diagnostic odds ratio (DOR) of 40 with a 95 % confidence interval (CI): 14 to 117. The CAD of perisplenic hematoma had the highest diagnosis rates with an accuracy of 0.90, a sensitivity of 0.95, specificity of 0.80, and DOR of 76 with a 95 % CI: 13 to 442. Conclusions: We developed a new algorithm to detect post-traumatic splenic lesions automatically and with high accuracy. Our method could potentially lead to the automated diagnosis of all traumatic abdominal pathologies.

To improve the theoretical prediction of the anomalous dipole moments of the τ-neutrino, we have carried out a study through the processes e+e−→(γ,Z)→ντν¯τγ and γe−→τν¯τνe, which represent an excellent and useful option in determination of these anomalous parameters. Furthermore, we consider the effective Lagrangian formalism which induces contributions to the dipole moments of the tau-neutrino. To study the potential of the processes e+e−→(γ,Z)→ντν¯τγ and γe−→τν¯τνe we apply a future high-energy and high-luminosity linear electron-positron collider, such as the CLIC, with s=380, 1500, 3000 GeV and L=10, 50, 100, 200, 500, 1000, 1500, 2000, 3000 fb−1, and we consider systematic uncertainties of δsys=0%, 5%, 10%. Furthermore, we including initial state radiation plus beamstrahlung effects. With these elements, we present a comprehensive and detailed sensitivity study on the total cross section of the processes e+e−→(γ,Z)→ντν¯τγ and γe−→τν¯τνe, as well as on the dipole moments κ˜ντ and d˜ντ at the 95% C.L., showing the feasibility of such processes at the CLIC at the e+e− and γe− modes with unpolarized and polarized electron-positron beams.

We conduce a study to probe the sensitivity of the process $e^+e^-\rightarrow (\gamma, Z) \to \nu_\tau \bar \nu_\tau \gamma$ to the total cross section, the magnetic moment and the electric dipole moment of the tau-neutrino in a model-independent way. For this study, the beam polarization facility at the Compact Linear Collider (CLIC) along with the typical center-of-mass energies $\sqrt{s}=380-3000\hspace{0.8mm}GeV$ and integrated luminosities ${\cal L}=10-3000\hspace{0.8mm}fb^{-1}$ is considered. We estimate the sensitivity at the $95\%\hspace{1mm}$ Confidence Level (C.L.) and systematic uncertainties $\delta_{sys}=0, 5, 10\hspace{1mm}\%$ on the dipole moments of the tau-neutrino. It is shown that the process under consideration $e^+e^-\rightarrow (\gamma, Z) \to \nu_\tau \bar \nu_\tau \gamma$ is a good prospect for study the dipole moments of the tau-neutrino at the CLIC. Also, our study illustrates the complementarity between CLIC and other $e^+e^-$ and $pp$ colliders in probing extensions of the Standard Model, and shows that the CLIC at high energy and high luminosity provides a powerful means to sensitivity estimates for the electromagnetic dipole moments of the tau-neutrino., Comment: 24 pages, 11 figures and 6 tables. arXiv admin note: text overlap with arXiv:1807.00238