Chiral color quark symmetry and possible constraints on the G′-boson mass from tevatron and LHC data

Martynov, M. V.; Smirnov, A. D.

doi:10.1134/s1063778812020147

Phys. Atom. Nuclei

2012

DOI: 10.1134/s1063778812020147

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Chiral color quark symmetry and possible constraints on the G′-boson mass from tevatron and LHC data

M. V. Martynov

A. D. Smirnov

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Cited by 2 publications

(6 citation statements)

References 67 publications

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“…There are many approaches for cancellation of the chiral γ 5 -anomalies produced by the SM fermions through extensions of the SM fermion sector by introducing additional exotic fermions. The most simple and natural looks the variant [13] in which in the case of the group (8) for each SM doublet q of quarks q a , a = 1, 2 transforming under the group (8) in the usual way…”

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confidence: 99%

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Mass limits for the chiral color symmetry G′-boson from LHC dijet data

Frolov

Smirnov

2016

Mod. Phys. Lett. A

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The contributions of G ′ -boson predicted by the chiral color symmetry of quarks to the differential dijet cross-sections in pp-collisions at the LHC are calculated and analysed in dependence on two free parameters of the model, the G ′ mass m G ′ and mixing angle θ G . The exclusion and consistency m G ′ − θ G regions imposed by the ATLAS and CMS data on dijet cross-sections are found. Using the CT10 (MSTW 2008) PDF set we show that the G ′ -boson for θ G = 45 • , i.e. the axigluon, with the masses m G ′ < 2.3 (2.6) TeV and m G ′ < 3. 35 (3.25) TeV is excluded at the probability level of 95% by the ATLAS and CMS dijet data respectively. For the other values of θ G the exclusion limits are more stringent. The m G ′ − θ G regions consistent with these data at CL = 68% and CL = 90% are also found.Keywords: New physics; chiral color symmetry; axigluon; massive color octet; G ′ -boson; dijet cross section.The search for the possible effects of new physics beyond the Standard Model (SM) is now one of the main goals of the experiments at the LHC. By now there are many models predicting new particles which can manifest themselves at the LHC energy through the possible new physics effects. Among such particles there are new quarks and leptons of the fourth generation of fermions, supersymmetric particles of the supersymmetry models, new scalar particles of two Higgs models, new gauge bosons of the weak left-right symmetry model, gauge and scalar leptoquarks of the four color quark-lepton symmetry models, etc. The unobservation of the new physics effects induced by these particles at the LHC will set new limits on the parameter of corresponding models.One of such models which also predict new particles and can induce the new physics effects at the LHC energy is based on the gauge group of the chiral color symmetry of quarkswhich is assumed to be valid at high energies and is spontaneously broken to usual QCD SU c (3) at some low energy scale M chc . The idea of the originally chiral character of SU

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confidence: 99%

“…The idea of the originally chiral character of SU c (3) color symmetry of quarks was firstly proposed and realized for particular case of g L = g R in refs. [1][2][3][4] and then it was extended to the more general case of g L = g R [5][6][7][8].…”

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confidence: 99%

Mass limits for the chiral color symmetry G′-boson from LHC dijet data

Frolov

Smirnov

2016

Mod. Phys. Lett. A

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“…The charge difference of the parton cross section (8) results in the corresponding charge difference ∆ C (pp → tt) of the tt-production in pp-collisions. One usually uses the charge asymmetry in the tt-production which we define as…”

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confidence: 99%

“…It would be of interest to know the lower limit on this energy scale of the chiral color symmetry breaking which is achieved now at the LHC. The immediate consequence of the chiral color symmetry of quarks is the prediction of a new gauge particle -the axigluon G A (in particular case of g L = g R [1][2][3][4]) or G ′ -boson (in more general case of g L = g R [5][6][7][8]). The G ′ -boson is the color octet massive gauge particle with vector and axial vector couplings to quarks of order g st defined by the gauge group (2).…”

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confidence: 99%

“…The possible effect of G ′ -boson on the forward-backward asymmetry in t t production at the Tevatron has been considered in refs. [6][7][8]. The other possible explanations of the large forward-backward asymmetry in t t production at the Tevatron are also known and discussed in a large number of papers, see for instance recent papers [9][10][11][12][13][14][15][16][17] and the references therein.…”

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confidence: 99%

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THE CHIRAL COLOR SYMMETRY OF QUARKS AND G′-BOSON CONTRIBUTIONS TO CHARGE ASYMMETRY IN $t \bar t$-PRODUCTION AT THE LHC AND TEVATRON

2013

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The contributions of G ′ -boson predicted by the chiral color symmetry of quarks to the charge asymmetry A C (pp → tt) in tt production at the LHC and to the forwardbackward asymmetry A FB (pp → tt) in tt production at the Tevatron are calculated and analysed in dependence on two free parameters of the model, the G ′ mass m G ′ and mixing angle θ G . The m G ′ − θ G regions of 1σ consistency with the CMS data on the cross section σ(pp → tt) and on the charge asymmetry A C (pp → tt) are found and compared with those resulted from the CDF data on the cross section σ(pp → tt) and on the forward-backward asymmetry A FB (pp → tt) of tt production at the Tevatron with account of the current SM predictions for A FB (pp → tt).

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Chiral color quark symmetry and possible constraints on the G′-boson mass from tevatron and LHC data

Cited by 2 publications

References 67 publications

Mass limits for the chiral color symmetry G′-boson from LHC dijet data

Mass limits for the chiral color symmetry G′-boson from LHC dijet data

THE CHIRAL COLOR SYMMETRY OF QUARKS AND G′-BOSON CONTRIBUTIONS TO CHARGE ASYMMETRY IN $t \bar t$-PRODUCTION AT THE LHC AND TEVATRON

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