MASS BOUNDS ON THE EXTRA NEUTRAL VECTOR BOSONS AT FUTURE e+e− COLLIDERS WITH POLARIZED BEAMS

1993 ◽  
Vol 08 (28) ◽  
pp. 5063-5077
Author(s):  
A.A. LIKHODED ◽  
M.V. SHEVLYAGIN ◽  
O.P. YUSHCHENKO
Keyword(s):  
Vector Boson ◽  
Polarized Beams ◽  
Linear Colliders ◽  
Vector Bosons ◽  
Composite Models ◽  
Neutral Vector ◽  
New Generation

After the example of the extended electroweak models, which predict the existence of the heavy neutral vector boson Z′, we discuss, for the e+e− linear colliders of the new generation, the possibilities of searching for the extra boson effects provided that various configurations of the beam polarizations will be available. For the most popular models [E6-superstring-inspired, LR- and Y(YL)-composite models] we show that realization of the specific beam polarizations can substantially enhance the experiment sensitivity to the Z′ signal in comparison with the case of the unpolarized beams.

scholarly journals First results on precision constraints on Z - Z′ mixing with ATLAS and CMS diboson production data at the LHC at 13 TeV and predictions for Run II

2018 ◽  
Vol 191 ◽  
pp. 02006
Author(s):  
Alexander Pankov ◽  
Vadim Bednyakov
Keyword(s):  
Global Analysis ◽  
Vector Boson ◽  
New Physics ◽  
Gauge Sector ◽  
Diboson Production ◽  
Vector Bosons ◽  
Neutral Vector ◽  
Exclusion Region ◽  
8 Tev ◽  
Using Data

The study of electroweak boson pair production provides a powerful tool to search for new phenomena beyond the Standard Model (SM). Extra neutral vector bosons Z′ decaying to charged gauge vector boson pairs W+W- are predicted in many scenarios of new physics, including models with an extended gauge sector. The diboson production allows to place stringent constraints on the Z-Z′ mixing parameter ξ and Z′ mass, MZ′. We present the Z′ exclusion region in the ξ - MZ′ plane for the first time by using data comprised of pp collisions at √s = 13 TeV and recorded by the ATLAS and CMS detectors at the CERN LHC, with integrated luminosities of 36.1 and 35.9 fb-1, respectively. The exclusion region has been significantly extended compared to that obtained from the previous analysis performed with Tevatron data, as well as with LHC data collected at 7 and 8 TeV. Also, we found that these constraints on the Z-Z′ mixing factor are more severe than those derived from the global analysis of electroweak data. Further improvement on the constraining of this mixing can be achieved from the analysis of data to be collected at higher luminosity expected in Run II.

scholarly journals OBLIQUE RADIATIVE CORRECTIONS IN THE VECTOR CONDENSATE MODEL OF ELECTROWEAK INTERACTIONS

1995 ◽  
Vol 10 (29) ◽  
pp. 2193-2196 ◽  
Author(s):  
G. CYNOLTER ◽  
E. LENDVAI ◽  
G. PÓCSIK
Keyword(s):  
Gauge Symmetry ◽  
Standard Model ◽  
Vector Boson ◽  
Higgs Doublet ◽  
Radiative Corrections ◽  
Momentum Scale ◽  
The Standard Model ◽  
Vector Bosons ◽  
Neutral Vector ◽  
The Masses

Oblique radiative corrections are calculated to the parameter S in a version of the standard model where the Higgs doublet is replaced by a doublet of vector bosons and the gauge symmetry is broken dynamically. We show that to each momentum scale there exists a domain of the masses of charged and neutral vector bosons where S is compatible with the experiments. At a scale of 1 TeV this requires vector boson masses of at least m0 ≈ 400–550 GeV , m+ ≈ 200–350 GeV .

scholarly journals LEFT–RIGHT ASYMMETRIES AND EXOTIC VECTOR–BOSON DISCOVERY IN LEPTON–LEPTON COLLIDERS

2001 ◽  
Vol 16 (06) ◽  
pp. 1147-1160 ◽  
Author(s):  
J. C. MONTERO ◽  
V. PLEITEZ ◽  
M. C. RODRIGUEZ
Keyword(s):  
Vector Boson ◽  
Lepton Colliders ◽  
Vector Bosons ◽  
Neutral Vector ◽  
Doubly Charged

By considering left–right (L–R) asymmetries we study the capabilities of lepton colliders in searching for new exotic vector bosons. Specifically we study the effect of a doubly charged bilepton boson and an extra neutral vector boson appearing in a 3-3-1 model on the L–R asymmetries for the processes e-e-→e-e-, μ-μ-→ μ-μ- and e-μ-→e- μ- and show that these asymmetries are very sensitive to these new contributions and that they are in fact powerful tools for discovery of this sort of vector bosons.

scholarly journals The O(α2) initial state QED corrections to e+e− annihilation to a neutral vector boson revisited

2019 ◽  
Vol 791 ◽  
pp. 206-209 ◽  
Author(s):  
J. Blümlein ◽  
A. De Freitas ◽  
C.G. Raab ◽  
K. Schönwald
Keyword(s):  
Vector Boson ◽  
Initial State ◽  
Neutral Vector

scholarly journals The GUP Effect on Tunneling of Massive Vector Bosons from The 2+1 Dimensional Black Hole

2018 ◽  
Vol 2018 ◽  
pp. 1-8
Author(s):  
Ganim Gecim ◽  
Yusuf Sucu
Keyword(s):  
Black Hole ◽  
Angular Momentum ◽  
Total Angular Momentum ◽  
Vector Boson ◽  
Generalized Uncertainty Principle ◽  
Hawking Temperature ◽  
Massive Vector ◽  
Vector Bosons ◽  
Dimensional Black Hole ◽  
The Stability

In this study, the Generalized Uncertainty Principle (GUP) effect on the Hawking radiation formed by tunneling of a massive vector boson particle from the 2+1 dimensional new-type black hole was investigated. We used modified massive vector boson equation based on the GUP. Then, the Hamilton-Jacobi quantum tunneling approach was used to work out the tunneling probability of the massive vector boson particle and Hawking temperature of the black hole. Due to the GUP effect, the modified Hawking temperature was found to depend on the black hole properties, on the AdS3 radius, and on the energy, mass, and total angular momentum of the tunneling massive vector boson. In the light of these results, we also observed that modified Hawking temperature increases by the total angular momentum of the particle while it decreases by the energy and mass of the particle and the graviton mass. Also, in the context of the GUP, we see that the Hawking temperature due to the tunneling massive vector boson is completely different from both that of the spin-0 scalar and that of the spin-1/2 Dirac particles obtained in the previous study. We also calculate the heat capacity of the black hole using the modified Hawking temperature and then discuss influence of the GUP on the stability of the black hole.

scholarly journals TESTING VECTOR BOSON DOMINANCE OF ELECTROWEAK INTERACTIONS VIA e+e− ANNIHILATION INTO BOSON PAIRS

1996 ◽  
Vol 11 (13) ◽  
pp. 2293-2307
Author(s):  
V.V. KABACHENKO ◽  
YU. F. PIROGOV
Keyword(s):  
Pair Production ◽  
Linear Collider ◽  
Vector Boson ◽  
Higgs Bosons ◽  
Electroweak Interactions ◽  
Boson Pair ◽  
Polarized Beams ◽  
Boson Pair Production ◽  
Compositeness Scale

In the framework of the unified compositeness of leptons, quarks and Higgs bosons, supplemented with the hypothesis of the vector boson dominance of the SM gauge interactions, restrictions on the universal residual fermion–boson and boson–boson interactionsare investigated. Manifestations of the universal interactions in the W+W− and ZH boson pair production at the 2 TeV e+e− linear collider are studied. Definite signaturesof these interactions are exposed, and their relations to the nonstandard triple gaugeinteractions are considered. It is shown that the unified substructure could be tested atthe collider in these processes up to the compositeness scale [Formula: see text], which liesin the naturally preferred deca-TeV region. Importance of the optimal angular cutoffsand the polarized beams is found.

scholarly journals FLAVOR CHANGING NEUTRAL CURRENTS IN SU(3)L⊗U(1)Y MODELS

1994 ◽  
Vol 09 (17) ◽  
pp. 1609-1615 ◽  
Author(s):  
D. GÓMEZ DUMM ◽  
F. PISANO ◽  
V. PLEITEZ
Keyword(s):  
Neutral Current ◽  
Vector Boson ◽  
Neutral Currents ◽  
Flavor Changing ◽  
Flavor Changing Neutral Current ◽  
Neutral Vector ◽  
Flavor Changing Neutral Currents

We consider flavor changing neutral current effects coming from the Z′ exchange in 3–3–1 models. We show that the mass of this extra neutral vector boson may be less than 2 TeV and discuss the problem of quark family discrimination.

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