Collider signals of W ' and Z ' bosons in the gauge-Higgs unification

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21670%2F17%3A00320723" target="_blank" >RIV/68407700:21670/17:00320723 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1103/PhysRevD.95.035032" target="_blank" >http://dx.doi.org/10.1103/PhysRevD.95.035032</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1103/PhysRevD.95.035032" target="_blank" >10.1103/PhysRevD.95.035032</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Collider signals of W ' and Z ' bosons in the gauge-Higgs unification

Popis výsledku v původním jazyce

In the SO(5)xU(1) gauge-Higgs unification (GHU) Kaluza-Klein (KK) excited states of charged and neutral vector bosons W-(1) W-R((1)) Z((1)) gamma((1)) and Z(R)((1)) can be observed as W' and Z' signals in collider experiments. In this paper we evaluate the decay rates of the W' and Z' and s-channel cross sections mediated by W' and Z' bosons with final states involving the standard model (SM) fermion pair (lv ll qq') WH ZH WW and WZ. W' and Z' resonances appear around 6.0 TeV (8.5 TeV) for theta(H)=0.115 (0.0737) where theta H is the Aharonov-Bohm phase in the fifth dimension in GHU. For decay rates we find Gamma(W' -> WH)similar or equal to(W' -> WZ) (W'=W-(1) W-R((1))) Gamma(W-(1) -> WHWZ)similar to(W-R((1)) -> WHWZ) Gamma(Z((1)) -> ZH)similar or equal to Sigma(Z'-Z(1))gamma((1))Gamma(Z' -> WW) and Gamma(Z(R)((1)) -> ZH)similar or equal to Gamma(Z(R)((1)) -> WW). W' and Z' signals of GHU can be best found at the LHC experiment in the processes pp -> W'(Z')+X followed by W'-> tb WH and Z'-> e(+)e(-) mu(+)mu(-)ZH. For the lighter Z' (theta(H)=0.115) case with forthcoming 30 fb(-1) data of the 13 TeV LHC experiment we expect about ten mu(+)mu(-) events for the invariant mass range 3 to 7 TeV though the number of the events becomes much smaller when theta(H)=0.0737. In the process with WZ in the final state it is confirmed that the unitarity is preserved provided that all KK excited intermediate states are taken into account. Deviation of the WWZ coupling from the SM is very tiny. Exotic partners t(T)((1)) and b(Y)((1)) of the top and bottom quarks with electric charge +5/3 and -4/3 have mass M-t(1)Tb(1) =(')4.6 (5.4)TeV for theta(H)=0.115 (0.0737) becoming the lightest non-SM particles in GHU which can be singly produced in collider experiments.

Název v anglickém jazyce

Collider signals of W ' and Z ' bosons in the gauge-Higgs unification

Popis výsledku anglicky

In the SO(5)xU(1) gauge-Higgs unification (GHU) Kaluza-Klein (KK) excited states of charged and neutral vector bosons W-(1) W-R((1)) Z((1)) gamma((1)) and Z(R)((1)) can be observed as W' and Z' signals in collider experiments. In this paper we evaluate the decay rates of the W' and Z' and s-channel cross sections mediated by W' and Z' bosons with final states involving the standard model (SM) fermion pair (lv ll qq') WH ZH WW and WZ. W' and Z' resonances appear around 6.0 TeV (8.5 TeV) for theta(H)=0.115 (0.0737) where theta H is the Aharonov-Bohm phase in the fifth dimension in GHU. For decay rates we find Gamma(W' -> WH)similar or equal to(W' -> WZ) (W'=W-(1) W-R((1))) Gamma(W-(1) -> WHWZ)similar to(W-R((1)) -> WHWZ) Gamma(Z((1)) -> ZH)similar or equal to Sigma(Z'-Z(1))gamma((1))Gamma(Z' -> WW) and Gamma(Z(R)((1)) -> ZH)similar or equal to Gamma(Z(R)((1)) -> WW). W' and Z' signals of GHU can be best found at the LHC experiment in the processes pp -> W'(Z')+X followed by W'-> tb WH and Z'-> e(+)e(-) mu(+)mu(-)ZH. For the lighter Z' (theta(H)=0.115) case with forthcoming 30 fb(-1) data of the 13 TeV LHC experiment we expect about ten mu(+)mu(-) events for the invariant mass range 3 to 7 TeV though the number of the events becomes much smaller when theta(H)=0.0737. In the process with WZ in the final state it is confirmed that the unitarity is preserved provided that all KK excited intermediate states are taken into account. Deviation of the WWZ coupling from the SM is very tiny. Exotic partners t(T)((1)) and b(Y)((1)) of the top and bottom quarks with electric charge +5/3 and -4/3 have mass M-t(1)Tb(1) =(')4.6 (5.4)TeV for theta(H)=0.115 (0.0737) becoming the lightest non-SM particles in GHU which can be singly produced in collider experiments.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

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OECD FORD obor

10303 - Particles and field physics

Projekt

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Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2017

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Physical Review D

ISSN

2470-0010

e-ISSN

2470-0029

Svazek periodika

95

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

35

Strana od-do

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Kód UT WoS článku

000396024300009

EID výsledku v databázi Scopus

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