TY  - JOUR
AU  - Bordes, J.
AU  - Hong-Mo, C.
AU  - Tsun, T. S.
PY  - 2018
DA  - 2018//
TI  - The Z boson in the framed standard model
T2  - Int. J. Mod. Phys. A
JO  - International Journal of Modern Physics A
SP  - 1850190
EP  - 19pp
VL  - 33
IS  - 32
PB  - World Scientific Publ Co Pte Ltd
KW  - Beyond the Standard Model
KW  - Z mixing
KW  - mass and decay of the electroweak gauge bosons
KW  - LHC phenomenology
AB  - The framed standard model (FSM), constructed initially for explaining the existence of three fermion generations and the hierarchical mass and mixing patterns of quarks and leptons,(1,2) suggests also a "hidden sector" of particles(3) including some dark matter candidates. It predicts in addition a new vector boson G, with mass of order TeV, which mixes with the gamma and Z of the standard model yielding deviations from the standard mixing scheme, all calculable in terms of a single unknown parameter mG. Given that standard mixing has been tested already to great accuracy by experiment, this could lead to contradictions, but it is shown here that for the three crucial and testable cases so far studied (i) m(Z) – m(W), (ii) Gamma(Z -> l(+)l(-)), (iii) Gamma(Z -> hadrons), the deviations are all within the present stringent experimental bounds provided m(G) > 1 TeV, but should soon be detectable if experimental accuracy improves. This comes about because of some subtle cancellations, which might have a deeper reason that is not yet understood. By virtue of mixing, G can be produced at the LHC and appear as a l(+)l(-) anomaly. If found, it will be of interest not only for its own sake but serve also as a window on to the "hidden sector" into which it will mostly decay, with dark matter candidates as most likely products.
SN  - 0217-751x
UR  - http://arxiv.org/abs/1806.08271
UR  - https://doi.org/10.1142/S0217751X18501907
DO  - 10.1142/S0217751X18501907
LA  - English
N1  - WOS:000451433900008
ID  - Bordes_etal2018
ER  -