Detecting the light gauge boson Z via Higgstrahlung process in the <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" altimg="si1.gif" overflow="scroll"><mml:mi>U</mml:mi><mml:msub><mml:mrow><mml:mo stretchy="false">(</mml:mo><mml:mn>1</mml:mn><mml:mo stretchy="false">)</mml:mo></mml:mrow><mml:mrow><mml:msub><mml:mrow><mml:mi>L</mml:mi></mml:mrow><mml:mrow><mml:mi>μ</mml:mi></mml:mrow></mml:msub><mml:mo>−</mml:mo><mml:msub><mml:mrow><mml:mi>L</mml:mi></mml:mrow><mml:mrow><mml:mi>τ</mml:mi></mml:mrow>

Hou, Jin-Xin; Yue, C. X.; Zhao, Zhen-hua

doi:10.1016/j.nuclphysb.2019.01.017

Cited by 2 publications

(3 citation statements)

References 28 publications

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“…9, where the plot is drawn as a function of . The red points represent the result of the chosen parameter space satisfying the relic density constraint, the blue curve represents the result of XENON1T [80], the black curve represents the result from the light dark matter search in XENON1T [81], the orange curve represents results from Darkside-50 [82], and the green curve represents the constraint from CRESST-III [83] in the light dark matter region. According to Fig.…”

Section: Direct Detection Z ′mentioning

confidence: 99%

“…However, the range of is not excluded, which satisfies the co-annihilation condition. Most importantly, in our model, a region of a few GeV is (color online) Spin independent cross section as a function of ; the red points represent the result of the chosen parameter space satisfying the relic density constraint, the blue curve represents the result of XENON1T [80], the black curve represents the result from the light dark matter search in XEN-ON1T [81],the orange curve represents results from Darkside-50 [82], and the green curve represents the result of the CRESST-III experiment [83]. still allowed, in spite of the severe constraint from direct detection, and the co-annihilation process is also permitted in our model, as discussed above.…”

Section: Direct Detection Z ′mentioning

confidence: 99%

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Scalar dark matter and muon g-2 in a model *

Yang

Liu

et al. 2022

Chinese Phys. C

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We consider a simple scalar dark matter model within the frame of gauged $L_{\mu}-L_{\tau}$ symmetry. A new gauge boson $Z'$, as well as two scalar fields $S$ and $\Phi$, are introduced to the Standard Model (SM), where $S$ and $\Phi$ are SM singlets but both carry $U(1)_{L_{\mu}-L_{\tau}}$ charge. The real component and imaginary component of $S$ can acquire different masses after spontaneously symmetry breaking, and the lighter one can play the role of dark matter which is stabilized by an extra $Z_2$ symmetry. We consider the possibility of light dark matter as well as the co-annihilation case in our model, and present current $(g-2)_{\mu}$ anomaly, Higgs invisible decay, dark matter relic density as well as direct detection constraints on the parameter space. Direct detection gives the most stringent restriction on the model and we found although most of the parameter space are excluded, a few GeV mass region is still allowed where the co-annihilation process is also permitted in the model. Content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI. Article funded by SCOAP3 and published under licence by Chinese Physical Society and the Institute of High Energy Physics of the Chinese Academy of Science and the Institute of Modern Physics of the Chinese Academy of Sciences and IOP Publishing Ltd.

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Section: Direct Detection Z ′mentioning

confidence: 99%

Section: Direct Detection Z ′mentioning

confidence: 99%

Scalar dark matter and muon g-2 in a model *

Yang

Liu

et al. 2022

Chinese Phys. C

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“…In order to address the above issues, there are many well motivated extensions of the SM like SUSY [14][15][16][17], two Higgs doublet model [18][19][20][21][22][23], extension of the SM with an extra U (1) gauge group [24][25][26][27] and many more. In this work, we have considered the gauged U (1) L µ −L τ extension of the SM due to its relatively simple theoretical structure and background free environment, which has a complete gauge group SU (3) C × SU (2) L × U (1) Y × U (1) L µ −L τ and is called the U (1) L µ −L τ model [28][29][30][31][32][33][34][35]. One of the advantages of the U (1) L µ −L τ model is that the anomaly cancellation does not require any extra chiral fermionic degrees of freedom.…”

Section: Introductionmentioning

confidence: 99%

The signatures of the new particles $$h_{2}$$ and $$Z^{}_{\mu \tau }$$ at e-p colliders in the $${U(1)}_{L^{}_{\mu } - L^{}_{\tau } }$$ model

Hou

Yue

2019

Eur. Phys. J. C

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Considering the superior performances of the two future e-p colliders, LHeC and FCC-eh, we discuss the feasibility of detecting the additional neutral scalar h 2 and the light gauge boson Z µτ , which are predicted by the U (1) L µ −L τ model. Taking into account the experimental constraints on the relevant free parameters, we consider all possible production channels of h 2 and Z µτ at e-p colliders and further investigate their observability through the optimal channels in the case of the beam polarization P(e − )= -0.8. We find that the signal significance above 5σ of h 2 as well as Z µτ detecting can be achieved via e − p → e − jh 2 (→ Z µτ Z µτ ) → e − j + E T process and a 5σ sensitivity of Z µτ detecting can be gained via e − p → e − jh 1 (→ Z µτ Z µτ ) → e − j + E T process at e-p colliders with appropriate parameter values and a designed integrated luminosity. * the U (1) L µ −L τ model is that the anomaly cancellation does not require any extra chiral fermionic degrees of freedom. In this model, the breaking of L µ − L τ symmetry conduces to additional terms in the neutrino mass matrix, which offer an explanation for the neutrino masses and mixing simultaneously [34,35]. Besides, the scalar sector has been expanded by two additional complex scalar singlets (φ H and φ DM ) with nonzero L µ − L τ charge. The scalar φ DM can act as a viable DM candidate [36]. The other scalar φ H acquires a vacuum expectation value (VEV) v µτ and thereby making an additional neutral scalar h 2 product after spontaneous breaking of U (1) L µ −L τ , which indicates that h 2 has a mass of the same order with v µτ about 10 GeV -1000 GeV [33,37]. Owing to the significance of precise measurement of Higgs boson properties, many people are sparing no effort to search for the additional neutral scalars which can be produced and decay via their mixing with the SM-like Higgs boson h 1 [47].On the other hand, an extra neutral gauge boson Z µτ is also introduced and obtains a mass after spontaneous symmetry breaking of U (1) L µ −L τ . Z µτ does not couple to the SM quarks and the first generation leptons, which makes it immune to any restrictions coming from lepton and hadron colliders such as LEP and LHC. Therefore, the mass of Z µτ can be as light as 100 MeV for a low value of gauge coupling g µτ ≤ 10 −3 , which is required to meet the limits arising from neutrino trident production. The Z µτ with an MeV-scale mass can resolve the muon (g − 2) anomaly, explain the deficit of cosmic neutrino flux [34,39,40] and resolve the problem of relic abundance of DM in the scenario with a light weakly interacting massive particle [41-43] simultaneously. Therefore, searching for its possible collider evidences plays a vital role in exploring NP. Many attempts to discover this kind of new particles have been made in the meson decay experiment [44], beam dump experiment [45], electron-positron collider experiments [46] and so on.Searches for the new particles predicted by the U (1) L µ −L τ model are presently being conducted at the LHC and ILC [3...

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Detecting the light gauge boson Z via Higgstrahlung process in the U(1)Lμ−Lτ

Cited by 2 publications

References 28 publications

Scalar dark matter and muon g-2 in a model *

Scalar dark matter and muon g-2 in a model *

The signatures of the new particles $$h_{2}$$ and $$Z^{}_{\mu \tau }$$ at e-p colliders in the $${U(1)}_{L^{}_{\mu } - L^{}_{\tau } }$$ model

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