The No-Scale Multiverse at the LHC

被引:0
|
作者
Li, Tianjun [1 ]
Maxin, James A. [1 ]
Nanopoulos, Dimitri V. [1 ]
Walker, Joel W.
机构
[1] Texas A&M Univ, George P & Cynthia W Mitchell Inst Fundamental Ph, College Stn, TX 77843 USA
关键词
PROBE WMAP OBSERVATIONS; SUPERSYMMETRY BREAKING; INFLATIONARY UNIVERSE; SYMMETRY-BREAKING; STRING THEORY; SOFT TERMS; MODEL; COMPACTIFICATIONS; FLATNESS; HORIZON;
D O I
10.1088/1742-6596/306/1/012015
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
We present a contemporary perspective on the String Landscape and the Multiverse of plausible string, M- and F-theory vacua, seeking to demonstrate a non-zero probability for the existence of a universe matching our own observed physics within the solution ensemble. We argue for the importance of No-Scale Supergravity as an essential common underpinning for the spontaneous emergence of a cosmologically flat universe from the quantum "nothingness". Our context is a highly detailed phenomenological probe of No-Scale F-SU(5), a model representing the intersection of the F-lipped SU(5) x U(1)x Grand Unified Theory (GUT) with extra TeV-Scale vector-like multiplets derived out of F-theory, and the dynamics of No-Scale Supergravity. The latter in turn imply a very restricted set of high energy boundary conditions. We present a highly constrained "golden point" located near M-1/2 = 455 GeV and tan beta = 15 in the tan beta - M-1/2 plane, and a highly non-trivial "golden strip" with tan beta similar or equal to 15, m(t) = 173.0-174.4 GeV, M-1/2 = 455-481 GeV, and M-V = 691-1020 GeV, which simultaneously satisfies all the known experimental constraints, featuring also an imminently observable proton decay rate. We supplement this bottom-up phenomenological perspective with a top-down theoretical analysis of the one-loop effective Higgs potential. A striking consonance is achieved via the dynamic determination of tan beta and M-1/2 for fixed Z-boson mass at the local minimum minimorum of the potential, that being the secondary minimization of the spontaneously broken electroweak Higgs vacuum V-min. By also indirectly determining the electroweak scale, we suggest that this constitutes a complete resolution of the Standard Model gauge hierarchy problem. Finally, we present the distinctive collider level signatures of No-Scale F-SU(5) for the root s = 7 TeV LHC, with 1 fb(-1) of integrated luminosity. The characteristic feature is a light stop and gluino, both sparticles lighter than all other squarks, generating a surplus of ultra-high multiplicity (>= 9) hadronic jet events. We propose modest alterations to the canonical background selection cut strategy which are expected to yield significantly enhanced resolution of the characteristic ultra-high jet multiplicity F-SU(5) events, while readily suppressing the contribution of all Standard Model processes, and allowing moreover a clear differentiation from competing models of new physics, most notably minimal supergravity. Detection by the LHC of the ultra-high jet signal would constitute a suggestive evocation of the intimately linked stringy origins of F-SU(5), and could possibly provide a glimpse into the underlying structure of the fundamental string moduli, possibly even opening a darkened glass upon the hidden workings of the No-Scale Multiverse.
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页数:32
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