Limits for Zψ

INSPIRE   PDGID:
S056ZPS
Zψ is the extra neutral boson in E6 → SO(10) × U(1)ψ. gψ = e/cos θW is assumed unless otherwise stated. We list limits with the assumption ρ = 1 but with no further constraints on the Higgs sector. Values in brackets are from cosmological and astrophysical considerations and assume a light right-handed neutrino.
VALUE (GeV) CL% DOCUMENT ID TECN  COMMENT
>4560 OUR LIMIT
>4560 95 1
SIRUNYAN
2021N
 CMS pp; Zψ′ → e+e− , μ+μ−
none 250 - 4500 95 2
AAD
2019L
 ATLS pp; Zψ′ → e+e− , μ+μ−
none 200 - 3900 95 3
SIRUNYAN
2018BB
 CMS pp; Zψ′ → e+e− , μ+μ−
>3800 95 4
AABOUD
2017AT
 ATLS pp; Zψ′ → e+e−, μ+μ−
>2820 95 5
KHACHATRYAN
2017T
 CMS pp; Zψ′ → e+e−, μ+μ−
>1100 95 6
CHATRCHYAN
2012O
 CMS pp, Zψ′ → τ+τ−
• • We do not use the following data for averages, fits, limits, etc. • •
7
BOBOVNIKOV
2018
RVUE pp, Zψ′ → W+W−
>2740 95 8
AABOUD
2016U
 ATLS pp; Zψ′ → e+e−, μ+μ−
>2570 95 9
KHACHATRYAN
2015AE
 CMS pp; Zψ′ → e+e−, μ+μ−
>2510 95 10
AAD
2014V
 ATLS pp, Zψ′ → e+e−, μ+μ−
>2260 95 11
CHATRCHYAN
2013AF
 CMS pp, Zψ′ → e+e−, μ+μ−
>1790 95 12
AAD
2012CC
 ATLS pp, Zψ′ → e+e−, μ+μ−
>2000 95 13
CHATRCHYAN
2012M
 CMS Repl. by CHATRCHYAN 2013AF
>917 95 14
AALTONEN
2011I
 CDF pp―; Zψ′ → μ+μ−
>891 95 15
ABAZOV
2011A
 D0 pp―, Zψ′ → e+e−
>476 95 16
DEL-AGUILA
2010
RVUE Electroweak
>851 95 15
AALTONEN
2009T
 CDF pp―, Zψ′ → e+e−
>878 95 17
AALTONEN
2009V
 CDF Repl. by AALTONEN 2011I
>147 95 18
ERLER
2009
RVUE Electroweak
>822 95 15
AALTONEN
2007H
 CDF Repl. by AALTONEN 2009T
>410 95
SCHAEL
2007A
 ALEP e+e−
>475 95 19
ABDALLAH
2006C
 DLPH e+e−
>725 15
ABULENCIA
2006L
 CDF Repl. by AALTONEN 2007H
>675 95 20
ABULENCIA
2005A
 CDF Repl. by AALTONEN 2011I and AALTONEN 2009T
>366 95 21
ABBIENDI
2004G
 OPAL e+e−
>600 22
BARGER
2003B
 COSM Nucleosynthesis; light νR
>350 95 23
ABREU
2000S
 DLPH e+e−
>294 95 24
BARATE
2000I
 ALEP Repl. by SCHAEL 2007A
>137 95 25
CHO
2000
RVUE Electroweak
>146 95 26
ERLER
1999
RVUE Electroweak
>54 95 27
CONRAD
1998
RVUE νμN scattering
>590 95 28
ABE
1997S
 CDF pp―; Zψ′ → e+e− , μ+μ−
>135 95 29
VILAIN
1994B
 CHM2 νμ e → νμe; ν―μ e → ν―μe
>105 90 30
ABE
1990F
 VNS e+e−
[> 160] 31
GONZALEZ-GARC..
1990D
 COSM Nucleosynthesis; light νR
[> 2000] 32
GRIFOLS
1990D
 ASTR SN 1987A; light νR
1  SIRUNYAN 2021N search for resonance decaying to e+e−, μ+μ− in pp collisions at s = 13 TeV.
2  AAD 2019L search for resonances decaying to ℓ+ℓ− in pp collisions at s = 13 TeV.
3  SIRUNYAN 2018BB search for resonances decaying to ℓ+ℓ− in pp collisions at s = 13 TeV.
4  AABOUD 2017AT search for resonances decaying to ℓ+ℓ− in pp collisions at s = 13 TeV.
5  KHACHATRYAN 2017T search for resonances decaying to e+e−, μ+μ− in pp collisions at s = 8, 13 TeV.
6  CHATRCHYAN 2012O search for resonances decaying to τ+τ− in pp collisions at s = 7 TeV.
7  BOBOVNIKOV 2018 use the ATLAS limits on σ( p p → Z′)⋅B( Z′ → W+W−) to constrain the Z−Z′ mixing parameter ξ. See their Fig. 10 for limits in MZ′−ξ plane.
8  AABOUD 2016U search for resonances decaying to ℓ+ℓ− in pp collisions at s = 13 TeV.
9  KHACHATRYAN 2015AE search for resonances decaying to e+e−, μ+μ− in pp collisions at s = 8 TeV.
10  AAD 2014V search for resonances decaying to e+e−, μ+μ− in pp collisions at s = 8 TeV.
11  CHATRCHYAN 2013AF search for resonances decaying to e+e−, μ+μ− in pp collisions at s = 7 TeV and 8 TeV.
12  AAD 2012CC search for resonances decaying to e+e−, μ+μ− in pp collisions at s = 7 TeV.
13  CHATRCHYAN 2012M search for resonances decaying to e+e− or μ+μ− in pp collisions at s = 7 TeV.
14  AALTONEN 2011I search for resonances decaying to μ+μ− in pp― collisions at s = 1.96 TeV.
15  ABAZOV 2011A, AALTONEN 2009T, AALTONEN 2007H, and ABULENCIA 2006L search for resonances decaying to e+e− in pp― collisions at s = 1.96 TeV.
16  DEL-AGUILA 2010 give 95% CL limit on the Z−Z′ mixing −0.0019<θ< 0.0007.
17  AALTONEN 2009V search for resonances decaying to μ+μ− in pp― collisions at s = 1.96 TeV.
18  ERLER 2009 give 95% CL limit on the Z−Z′ mixing −0.0018<θ< 0.0009.
19  ABDALLAH 2006C give 95% CL limit |θ|< 0.0027. See their Fig. 14 for limit contours in the mass-mixing plane.
20  ABULENCIA 2005A search for resonances decaying to electron or muon pairs in pp― collisions at s = 1.96 TeV.
21  ABBIENDI 2004G give 95% CL limit on Z−Z′ mixing −0.00129 <θ< 0.00258. See their Fig. 20 for the limit contour in the mass-mixing plane. s = 91 to 207 GeV.
22  BARGER 2003B limit is from the nucleosynthesis bound on the effective number of light neutrino δNν<1. The quark-hadron transition temperature Tc=150 MeV is assumed. The limit with Tc=400 MeV is >1100 GeV.
23  ABREU 2000S give 95% CL limit on Z−Z′ mixing |θ|<0.0018. See their Fig. 6 for the limit contour in the mass-mixing plane. s=90 to 189 GeV.
24  BARATE 2000I search for deviations in cross section and asymmetries in e+ e− → fermions at s=90 to 183 GeV. Assume θ=0. Bounds in the mass-mixing plane are shown in their Figure 18.
25  CHO 2000 use various electroweak data to constrain Z′ models assuming mH=100 GeV. See Fig. 3 for limits in the mass-mixing plane.
26  ERLER 1999 give 90% CL limit on the Z−Z′ mixing −0.0013<θ<0.0024.
27  CONRAD 1998 limit is from measurements at CCFR, assuming no Z−Z′ mixing.
28  ABE 1997S find σ(Z′)×B(e+e−,μ+μ−)<40 fb for mZ′>600 GeV at s= 1.8 TeV.
29  VILAIN 1994B assume mt = 150 GeV and θ=0. See Fig. 2 for limit contours in the mass-mixing plane.
30  ABE 1990F use data for R, Rℓℓ, and Aℓℓ. ABE 1990F fix mW = 80.49 ±0.43 ±0.24 GeV and mZ = 91.13 ±0.03 GeV.
31  Assumes the nucleosynthesis bound on the effective number of light neutrinos (δNν < 1) and that νR is light (≲ 1 MeV).
32  GRIFOLS 1990D limit holds for mνR≲ 1 MeV. See also RIZZO 1991.
References
SIRUNYAN 2021N
JHEP 2107 208 Search for resonant and nonresonant new phenomena in high-mass dilepton final states at s = 13 TeV
AAD 2019L
PL B796 68 Search for high-mass dilepton resonances using 139 fb−1 of pp collision data collected at sqrts=13 TeV with the ATLAS detector
BOBOVNIKOV 2018
PR D98 095029 Improved constraints on the mixing and mass of Z′ bosons from resonant diboson searches at the LHC at s=13 TeV and predictions for Run II
SIRUNYAN 2018BB
JHEP 1806 120 Search for high-mass resonances in dilepton final states in proton-proton collisions at s= 13 TeV
AABOUD 2017AT
JHEP 1710 182 Search for New High-Mass Phenomena in the Dilepton Final State using 36 fb−1 of Proton-Proton Collision Data at s = 13 TeV with the ATLAS Detector
KHACHATRYAN 2017T
PL B768 57 Search for Narrow Resonances in Dilepton Mass Spectra in Proton-Proton Collisions at s = 13 TeV and Combination with 8 TeV Data
AABOUD 2016U
PL B761 372 Search for High-Mass New Phenomena in the Dilepton Final State using Proton-Proton Collisions at s = 13 TeV with the ATLAS Detector
KHACHATRYAN 2015AE
JHEP 1504 025 Search for Physics Beyond the Standard Model in Dilepton Mass Spectra in Proton-Proton Collisions at s = 8 TeV
AAD 2014V
PR D90 052005 Search for High-Mass Dilepton Resonances in pp Collisions at s = 8 TeV with the ATLAS Detector
CHATRCHYAN 2013AF
PL B720 63 Search for Heavy Narrow Dilepton Resonances in pp Collisions at s = 7 TeV and s = 8 TeV
AAD 2012CC
JHEP 1211 138 Search for High-Mass Resonances Decaying to Dilepton Final States in pp Collisions at s = 7 TeV with the ATLAS Detector
CHATRCHYAN 2012M
PL B714 158 Search for Narrow Resonances in Dilepton Mass Spectra in pp Collisions at s = 7 TeV
CHATRCHYAN 2012O
PL B716 82 Search for High Mass Resonances Decaying into τ-Lepton Pairs in pp Collisions at s = 7 TeV
AALTONEN 2011I
PRL 106 121801 Search for High Mass Resonances Decaying to Muon Pairs in s = 1.96 TeV pp― Collisions
ABAZOV 2011A
PL B695 88 Search for a Heavy Neutral Gauge Boson in the Dielectron Channel with 5.4 fb−1 of pp Collisions at s = 1.96 TeV
DEL-AGUILA 2010
JHEP 1009 033 Electroweak Limits on General New Vector Bosons
AALTONEN 2009T
PRL 102 031801 Search for High-Mass e+e− Resonances in pp― Collisions at s = 1.96 TeV
AALTONEN 2009V
PRL 102 091805 Search for High-Mass Resonances Decaying to Dimuons at CDF
ERLER 2009
JHEP 0908 017 Improved Constraints on Z′ Bosons from Electroweak Precision Data
AALTONEN 2007H
PRL 99 171802 Search for New Physics in High-Mass Electron-Positron Events in pp― Collisions at s = 1.96 TeV
SCHAEL 2007A
EPJ C49 411 Fermion Pair Production in e+e− Collisions at 189−209 GeV and Constraints on Physics Beyond the Standard Model
ABDALLAH 2006C
EPJ C45 589 Measurement and Interpretation of Fermion-Pair Production at LEP Energies above the Z Resonance
ABULENCIA 2006L
PRL 96 211801 Search for Z′ → e+e− using Dielectron Mass and Angular Distribution
ABULENCIA 2005A
PRL 95 252001 Search for New High-Mass Particles Decaying to Lepton Pairs in pp― Collisions at s =1.96 TeV
ABBIENDI 2004G
EPJ C33 173 Tests of the Standard Model and Constraints on New Physics from Measurements of Fermion Pair Production at 189 to 209 GeV at LEP
BARGER 2003B
PR D67 075009 Primordial Nucleosynthesis Constraints on Z′ Properties
ABREU 2000S
PL B485 45 Measurement and Interpretation of Fermion-Pair Production at LEP Energies of 183 and 189 GeV
BARATE 2000I
EPJ C12 183 Study of Fermion Pair Production in e+e− Collisions at 130−183 GeV
CHO 2000
MPL A15 311 Looking for Z′ Bosons in Supersymmetric E(6) Models Through Electroweak Precision Data
ERLER 1999
PL B456 68 Constraints on Extended Neutral Gauge Structures
CONRAD 1998
RMP 70 1341 Precision Measurements with High Energy Neutrino Beams
ABE 1997S
PRL 79 2192 Search for New Gauge Bosons Decaying into Dileptons in p―p Collisions at s = 1.8 TeV
VILAIN 1994B
PL B332 465 Constraints on Additional Z Bosons Derived from Neutrino Electron Scattering Measurements
ABE 1990F
PL B246 297 Experimental Limits on Extra Z Bosons from e+e− Annihilation Data with the VENUS Detector at s = 50-64 GeV
GONZALEZ-GARCIA 1990D
PL B240 163 Cosmological Constraints on Additional Light Neutrinos and Neutral Gauge Bosons
GRIFOLS 1990D
PR D42 3293 E(6) Models Confront SN1987a