CLICte iki Z-Bozonu Üretimi Aracılığıyla Anormal ZZZ ve ZZγ Bağlaşımlarının Tahmini

Year 2023, Volume: 13 Issue: 1, 232 - 246, 15.03.2023

Emre Gürkanlı

https://doi.org/10.31466/kfbd.1240083

Abstract

Standart Modelin abelyen olmayan doğası ayar bozonlarının kendileriyle öz etkileşmelerinin varlığını gerektirir. Bu etkileşmeler Standart Modeli test etmek ve yeni fizik etkilerini görmek için önemlidir. Bu etkileri efektif teori kapsamında analiz etmek bu çalışmanın ana motivasyon kaynağını oluşturmaktadır. Bu çalışmada CLIC çarpıştırıcısında √s=3 TeV de polarize ve polarize olmayan elektron için e^- e^+→ZZ süreci aracılığıyla ZZZ ve ZZγ anormal yüksüz üçlü ayar bozonu bağlaşımları incelenmiştir. Son durumda Z-bosonunun yarı-leptonik bozunumu (Z→jj , Z→ν_l (ν_l ) ̅ ) dikkate alınmıştır. Burada CP ihlal eden C_BB/Λ^4 , C_BW/Λ^4 , C_WW/Λ^4 ve CP koruyan C_(B ̅W)/Λ^4 bağlaşımlarına odaklanılmıştır. Duyarlılıklar 95% güvenilirlik seviyesinde, sırasıyla polarize olmayan, 80% ve -80% polarize elektron için L_int=5 ab-1, L_int=1 ab-1 ve L_int=4 ab-1 ışınlılık değerleri kullanılarak hesaplanmıştır. Anormal bağlaşımlar için elde edilen duyarlılıklar deneysel limitlerden 3-20 kat daha sınırlayıcı iken literatürdeki ilgili fenomenolojik çalışmalarla karşılaştırılabilir seviyededir.

Keywords

Electroweak Interaction, Anomalous Triple Gauge Boson Couplings, Beyond Standard Model.

Prediction for the Anomalous ZZZ and ZZγ Couplings via two Z-boson Production at the CLIC

Abstract

The non-Abelian nature of the Standard Model (SM) entails the existence of the gauge bosons' self-interactions. The gauge bosons' self-interactions are important to test the SM and see the new physics effects. These effects can be analyzed in the effective theory approach which is the main aim of this study. We examine the ZZZ and ZZγ anomalous neutral triple gauge couplings (aNTGC) via the process e^- e^+→ZZ with both unpolarized and polarized electron beam with the √s=3 TeV at CLIC. In the final state, semi-leptonic decay of Z-bosons (Z→jj , Z→ν_l (ν_l ) ̅ ) are considered. We focused on CP-violating C_BB/Λ^4 , C_BW/Λ^4 , C_WW/Λ^4 and CP-conserving C_(B ̅W)/Λ^4 couplings. The sensitivities are obtained at 95% Confidence Level with luminosities of L_int=5 ab-1, L_int=1 ab-1 and L_int=4 ab-1 for unpolarized, 80% and -80% polarized electron beams, respectively. Obtained sensitivities on anomalous couplings are 3-20 times stringent than the current experimental limits and comparable with the related phenomenological studies in the literature.

Keywords

Electroweak Interaction, Anomalous Triple Gauge Boson Couplings, Beyond Standard Model.

References

• Aaboud, M., et al., (2018). Measurement of the Zγ→νν ̅γ production cross section in pp collisions at √s=13 TeV with the ATLAS detector and limits on anomalous triple gauge-boson couplings. JHEP, 12, 010.
• Alloul, A., Christensen, N.D., Degrande, C., Duhr, C., Fuks B., (2014). FeynRules 2.0- A complete toolbox for tree-level phenomenology. Comput. Phys. Commun., 185, 2250.
• Alwall, J., Frederix, R., Frixione, S., Hirschi, V., Maltoni, F., Mattelaer, O., Shao, H. -S., Stelzer, T., Torielli,
• P., Zaro, M., (2014). The automated computation of tree-level and next-to-leading order differential cross sections, and their matching to parton shower simulations. JHEP, 07, 079.
• Alwall, J., Herquet, M., Maltoni, F., Mattelaer, O., Stelzer, T., (2011). MadGraph 5: going beyond. JHEP, 06, 128.
• Ananthanarayan, B., Garg, K.S., Patra, M., Rindani, S.D., (2012). Isolating CP-violating γZZ coupling in e^+ e^-→γZ with transverse beam polarizations. Physical Review D, 85, 034006.
• Ananthanarayan, B., Lahiri, J., Patra, M., Rindani, S.D., (2014). New physics in e^+ e^-→γZ at he ILC with polarized beams: explorations beyond conventional anomalous triple gauge boson couplings. JHEP, 08, 124.
• Atağ, S., Şahin, İ., (2004). ZZγ and Zγγ couplings at linear e^+ e^- collider energies with the effects of Z polarization and initial state radiation. Physical Review D, 70, 053014.
• Baur, U., Berger, E.L., (1993). Probing the weak-boson sector in Zγ production at hadron colliders. Physical Review D, 47, 4889.
• Baur, U., Rainwater D., (2000). Probing neutral gauge boson self-interactions in ZZ production at hadron colliders. Physical Review D, 62, 113011.
• Biekötter, A., Gregg, P., Krauss, F., Schönherr, M., (2021). Constraining CP violating operators in charged and neutral triple gauge couplings. Physics Letters B, 817, 136311.
• Choudhury D., Rindani S.D., (1994). Test of CP-violating neutral gauge boson vertices in e^- e^+→γZ. Physics Letters B, 335, 198-204.
• Degrande C., (2014). A basis of dimension-eight operators for anomalous neutral triple gauge boson interactions. JHEP, 02, 101.
• Ellis, J., Ge, S.F., He, H.J., Xiao, R.Q., (2020). Probing the scale of new physics in the ZZγ coupling at e^+ e^- colliders. Chinese Physics C, 44, 063106.
• Ellis, J., He, H.J., Xiao, R.Q., (2021). Probing new physics in dimension-8 neutral gauge couplings at e^+ e^- colliders. Science China Physics, Mechanics & Astronomy, 64, 221062.
• Franceschini, R., (2020). Beyond the Standard Model physics at CLIC. International Journal of Modern Physics A, 35, 2041015.
• Fu, Q., Yang, J.C., Yue, C.X., Guo, Y.C., (2021). The study of neutral triple gauge couplings in the process e^+ e^-→γZ including unitarity bounds. Nucl. Phys. B, 972, 115543.
• Gounaris, G.J., Layssac, J., Renard, F.M., (2000). Signatures of the anomalous Zγ and ZZ production at lepton and hadron colliders. Physical Review D, 61, 073013.
• Gurkanli, E., Ari, V., Koksal, M., Gutierrez-Rodriguez, A., Hernandez-Ruiz, M.A., (2021). Study of the projected sensitivity on the anomalous quartic gauge couplings via Zγγ production at the CLIC. arXiv:2112.03948[hep-ph].
• Gutierrez-Rodriguez, A., Hernandez-Ruiz, M.A., Perez, M.A., (2009). Probing the ZZγ and Zγγ couplings through the process e^+ e^-→ν(νγ) ̅. Physical Review D, 80, 017301.
• Hernandez-Juarez, A.I., Moyotl, A., Tavares-Velasco, G., (2021). Contribution to ZZV^* (V=γ,Z,Z^' ) couplings from CP violating flavor changing couplings. European Physical Journal C, 81, 304.
• Khoriauli, G., (2009). Study of systematic uncertainties of single top production at ATLAS. Il Nuovo Cimento B, 123, 1327-1330.
• Ots, I., Uibo, H., Liivat, H., Loide, R. -K., Saar., (2004). Possible anomalous ZZγ and Zγγ couplings and Z boson spin orientation in e^+ e^-→Zγ. Nucl. Phys. B, 702, 346-356.
• Ots, I., Uibo, H., Liivat, H., Loide, R. -K., Saar., (2006). Possible anomalous ZZγ and Zγγ couplings and Z boson spin orientation in e^+ e^-→Zγ: The role of transverse polarization. Nucl. Phys. B, 740, 212-221.
• Rahaman, R., (2020). Study of anomalous gauge boson self-couplings and the role of spin-1 polarizations. PhD Thesis, Indian institute of science education and research, India.
• Rahaman, R., Singh, R.K., (2016). On polarization parameters of spin-1 particles and anomalous couplings in e^+ e^-→ZZ/Zγ. European Physical Journal C, 76, 539.
• Rahaman, R., Singh, R.K., (2017). On the choice of the beam polarization in e^+ e^-→ZZ/Zγ and anomalous triple gauge-boson couplings. European Physical Journal C, 77, 521.
• Rahaman, R., Singh, R.K., (2019). Anomalous triple gauge boson couplings in ZZ production at the LHC and the role of Z boson polarizations. Nucl. Phys. B, 948, 114754.
• Roloff, P., Franceschini, R., Schnoor, U., Wulzer, A., (2018). The compact linear e^+ e^- collider (CLIC): Physics potential. arXiv:1812.07986[hep-ex].
• Senol, A., Denizli, H., Yilmaz, A., Turk Cakir, I., Cakir, O., (2019). Study on anomalous neutral triple-gauge boson couplings from dimension-eight operators at the HL-LHC. Acta Physica Polonica B, 50, 1597.
• Senol, A., Denizli, H., Yilmaz, A., Turk Cakir, I., Cakir, O., (2020). The projections on ZZγ and Zγγ couplings via νν ̅γ production in HL-LHC and HE-LHC. Physics Letters B, 802, 135255
• Senol, A., Denizli, H., Yilmaz, A., Turk Cakir, I., Oyulmaz, K.Y., Karadeniz, O., Cakir, O., (2018). Probing the effects of dimension-eight oprators describing anomalous neutral triple gauge boson interactions at FCC-hh. Nucl. Phys. B, 935, 365-376.
• Senol, A., Spor, S., Gurkanli, E., Cetinkaya, V., Denizli, H., Koksal, M., (2022). Model-independent study on the anomalous ZZγ and Zγγ couplings at the future muon collider. European Physical Journal Plus, 137,1354.
• Spor, S., Koksal, M., (2021). Search for the anomalous WWγ couplings through the process e^- e^+→ν_e (ν_e ) ̅γ at ILC with unpolarized and polarized beams. Physics Letters B, 820, 136533.
• Weber, M., (2020). All-hadronic HHZ production at 3 TeV CLIC. arXiv:2008.05198[hep-ex].
• Yang, J.C., Yue, C.X., Guo, Y.C., Cai, L.H., (2022). Using a nested anomaly detection machine learning algorithm to study the neutral triple gauge couplings at an e^+ e^- collider. Nucl. Phys. B, 977, 115735
• Yilmaz, A., (2021). Search for the limits on anomalous neutral triple gauge couplings via ZZ production in the llνν channel at FCC-hh. Nucl. Phys. B, 969, 115471.
• Yilmaz, A., Senol, A., Denizli, H., Turk Cakir, I., Cakir, O., (2020). Sensitivity on anomalous neutral triple gauge couplings via ZZ production at FCC-hh. European Physical Journal C, 80, 173.