596
Ö. Özdal
Table 1 Related branching ratios and cross sections for BM I and BM II
BM I : M ν R > M W R
BM II : M ν R < M W R
m W R [GeV]
2557
3689
m ν R [GeV]
16797
1838
σ (pp → W R ) [fb] @13 TeV
48.7
3.98
σ (pp → W R ) [fb] @27 TeV
478.0
77.3
BR(W R → tb) [%]
26.3
19.9
BR(W R → jj ) [%]
58.6
45.8
BR(W R → ν R ) [%]
–
6.5 (each family)
BR(W R → h 1 W L ) [%]
1.8
1.5
BR(W R → W L Z) [%]
2.0
1.6
BR(ν R → qq ) [%]
–
65.3
BR(ν R → W L ) [%]
1.1×10 −4
33.1
BR(ν R → W R ) [%]
99.9
–
Finally, allowing g L = g R = 0.37 and V L
CKM = V R
CKM will not have significant
consequences on other sectors of the model. Both the singly charged and doubly
charged Higgs bosons δ
+
R and δ
++
R
are expected to be heavy. Even so, their
production mechanism is dominated by photon-mediated Drell Yan, or γ γ fusion,
and their branching ratios are independent of g R . This leads further support to W R
production and decay as being most promising signal to test this scenario. To assess
properties and differences between the two scenarios, we give two representative
benchmarks, one for the first scenario, M ν R > M W R and one for the second scenario,
M ν R < M W R , with the W R masses, cross sections and branching ratios given in
Table 1, for LHC at
√
s = 13 and 27 TeV. Overall our results yield weaker limits on
W R mass, yielding hope that W R could be discovered at HL-HE LHC.
References
1. J.C. Pati, A. Salam, Lepton number as the fourth color. Phys. Rev. D10, 275–289 (1974).
[Erratum: Phys. Rev. D11, 703 (1975)]
2. R.N. Mohapatra, J.C. Pati, A natural left-right symmetry. Phys. Rev. D11, 2558 (1975)
3. R.N. Mohapatra, J.C. Pati, Left-right gauge symmetry and an isoconjugate model of CP
violation. Phys. Rev. D11, 566–571 (1975)
4. G. Senjanovic, R.N. Mohapatra, Exact left-right symmetry and spontaneous violation of parity.
Phys. Rev. D12, 1502 (1975)
5. R.N. Mohapatra, G. Senjanovic, Neutrino mass and spontaneous parity violation. Phys. Rev.
Lett. 44, 912 (1980). [231 (1979)]
6. R.N. Mohapatra, G. Senjanovic, Neutrino masses and mixings in gauge models with
spontaneous parity violation. Phys. Rev. D23, 165 (1981)
7. M. Frank, A. Hayreter, I. Turan, Production and decays of W R bosons at the LHC. Phys. Rev.
D83, 035001 (2011)
8. P. Langacker, S. Uma Sankar, Bounds on the mass of W(R) and the W(L)-W(R) mixing angle
xi in general SU(2)-L x SU(2)-R x U(1) models. Phys. Rev. D40, 1569–1585 (1989)
Ö. Özdal
Table 1 Related branching ratios and cross sections for BM I and BM II
BM I : M ν R > M W R
BM II : M ν R < M W R
m W R [GeV]
2557
3689
m ν R [GeV]
16797
1838
σ (pp → W R ) [fb] @13 TeV
48.7
3.98
σ (pp → W R ) [fb] @27 TeV
478.0
77.3
BR(W R → tb) [%]
26.3
19.9
BR(W R → jj ) [%]
58.6
45.8
BR(W R → ν R ) [%]
–
6.5 (each family)
BR(W R → h 1 W L ) [%]
1.8
1.5
BR(W R → W L Z) [%]
2.0
1.6
BR(ν R → qq ) [%]
–
65.3
BR(ν R → W L ) [%]
1.1×10 −4
33.1
BR(ν R → W R ) [%]
99.9
–
Finally, allowing g L = g R = 0.37 and V L
CKM = V R
CKM will not have significant
consequences on other sectors of the model. Both the singly charged and doubly
charged Higgs bosons δ
+
R and δ
++
R
are expected to be heavy. Even so, their
production mechanism is dominated by photon-mediated Drell Yan, or γ γ fusion,
and their branching ratios are independent of g R . This leads further support to W R
production and decay as being most promising signal to test this scenario. To assess
properties and differences between the two scenarios, we give two representative
benchmarks, one for the first scenario, M ν R > M W R and one for the second scenario,
M ν R < M W R , with the W R masses, cross sections and branching ratios given in
Table 1, for LHC at
√
s = 13 and 27 TeV. Overall our results yield weaker limits on
W R mass, yielding hope that W R could be discovered at HL-HE LHC.
References
1. J.C. Pati, A. Salam, Lepton number as the fourth color. Phys. Rev. D10, 275–289 (1974).
[Erratum: Phys. Rev. D11, 703 (1975)]
2. R.N. Mohapatra, J.C. Pati, A natural left-right symmetry. Phys. Rev. D11, 2558 (1975)
3. R.N. Mohapatra, J.C. Pati, Left-right gauge symmetry and an isoconjugate model of CP
violation. Phys. Rev. D11, 566–571 (1975)
4. G. Senjanovic, R.N. Mohapatra, Exact left-right symmetry and spontaneous violation of parity.
Phys. Rev. D12, 1502 (1975)
5. R.N. Mohapatra, G. Senjanovic, Neutrino mass and spontaneous parity violation. Phys. Rev.
Lett. 44, 912 (1980). [231 (1979)]
6. R.N. Mohapatra, G. Senjanovic, Neutrino masses and mixings in gauge models with
spontaneous parity violation. Phys. Rev. D23, 165 (1981)
7. M. Frank, A. Hayreter, I. Turan, Production and decays of W R bosons at the LHC. Phys. Rev.
D83, 035001 (2011)
8. P. Langacker, S. Uma Sankar, Bounds on the mass of W(R) and the W(L)-W(R) mixing angle
xi in general SU(2)-L x SU(2)-R x U(1) models. Phys. Rev. D40, 1569–1585 (1989)