Bootstrap Dynamical Symmetry Breaking
Despite the emergence of a 125 GeV Higgs-like particle at the LHC, we explore the possibility of dynamical electroweak symmetry breaking by strong Yukawa coupling of very heavy new chiral quarks Q...
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| Main Author: | |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2013-01-01
|
| Series: | Advances in High Energy Physics |
| Online Access: | http://dx.doi.org/10.1155/2013/650617 |
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| Summary: | Despite the emergence of a 125 GeV Higgs-like particle at the LHC, we explore the possibility of dynamical electroweak symmetry breaking by strong Yukawa coupling of very heavy new chiral quarks
Q
. Taking the 125 GeV object to be a dilaton with suppressed couplings, we note that the Goldstone bosons
G
exist as longitudinal modes
V
L
of the weak bosons and would couple to
Q
with Yukawa coupling
λ
Q
. With
m
Q
≳
700
GeV from LHC, the strong
λ
Q
≳
4
could lead to deeply bound
Q
Q
¯
states. We postulate that the leading “collapsed state,” the color-singlet (heavy) isotriplet, pseudoscalar
Q
Q
¯
meson
π
1
, is
G
itself, and a gap equation without Higgs is constructed. Dynamical symmetry breaking is affected via strong
λ
Q
, generating
m
Q
while self-consistently justifying treating
G
as massless in the loop, hence, “bootstrap,” Solving such a gap equation, we find that
m
Q
should be several TeV, or
λ
Q
≳
4
π
, and would become much heavier if there is a light Higgs boson. For such heavy chiral quarks, we find analogy with the
π
−
N
system, by which we conjecture the possible annihilation phenomena of
Q
Q
¯
→
n
V
L
with high multiplicity, the search of which might be aided by Yukawa-bound
Q
Q
¯
resonances. |
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| ISSN: | 1687-7357 1687-7365 |