Bulletin of the American Physical Society
Annual Meeting of the APS Four Corners Section
Volume 60, Number 11
Friday–Saturday, October 16–17, 2015; Tempe, Arizona
Session K6: Particle Physics V |
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Chair: Walter Toki, Colorado State University Room: PSF173 |
Saturday, October 17, 2015 1:12PM - 1:36PM |
K6.00001: Search for Majorana Neutrinos with Neutrinoless Double Beta Decay$\backslash $fs20 Invited Speaker: William Faribank h $-abstract-$\backslash $pardNeutrinoless double beta decay provides a special window into some of the most fundamental properties of neutrinos, that are still unknown: (1) whether or not neutrinos are their own antiparticles (Majorana neutrinos), (2) what are the masses of the three types of neutrinos, and (3) whether or not there is charge-parity (CP) symmetry breaking in neutrinos. The current status of neutrinoless double beta decay in adressing these questions will be reviewed. The author is involved in the EXO-200 and nEXO double beta decay experiments using liquid $^{\mathrm{136}}$Xe. Some new results from EXO-200 and plans for nEXO, a ton-scale experiment, will be presented. For the second phase of nEXO, a technique is being developed to ``tag'' single $^{\mathrm{136}}$Ba atoms that result from $^{\mathrm{136}}$Xe double beta decay. Progress on barium tagging will also be discussed.$\backslash $fs20 $\backslash $pard-/abstract-$\backslash $\tex [Preview Abstract] |
Saturday, October 17, 2015 1:36PM - 1:48PM |
K6.00002: Supersymmetry Calculators: A Comparison Paul Bergeron With the discovery of entities such as the Higgs boson, there has been much excitement within particle physics: The Standard Model is in good health and finally complete after decades of work. However, many problems still remain (e.g. dark matter, hierarchy, etc.) and the LHC and other new experiments have found no statistically significant results for the simplest possibilities of physics beyond the Standard Model. For the first time, we are moving beyond the minimal extensions to our well known physics. As we do so, a troubling question arises: how accurate are our existing simulations of theory in the extended, complicated, high energy landscape? In my talk I will address this question and the steps necessary to answer it. [Preview Abstract] |
Saturday, October 17, 2015 1:48PM - 2:00PM |
K6.00003: Light Charged Higgs Bosons in Two Higgs Doublet Models Adarsh Pyarelal The Two Higgs Doublet Model (2HDM) is one of the simplest extensions to the Standard Model Higgs sector, and predicts the existence of additional Higgs bosons, including a pair of charged Higgs bosons $H^\pm$ and a pseudoscalar Higgs boson $A$. Existing searches for the charged Higgs mostly focus on the $H^\pm\rightarrow\tau\nu /cs$ decay channels. For light $A$’s, $H^\pm\rightarrow AW$ becomes kinematically accessible and competitive with the conventional channels. We examine the single top production channel with $t\rightarrow bH^\pm$, and the subsequent decay chain of $H^\pm\rightarrow AW\rightarrow\tau\tau l\nu$. We perform a collider analysis and obtain exclusion and discovery reach at the 14 TeV LHC with 100 fb-1 integrated luminosity. We further study the implication of the search limits on the Type II 2HDM. [Preview Abstract] |
Saturday, October 17, 2015 2:00PM - 2:12PM |
K6.00004: A Pure SU(3) AdS/CFT Model Aditya Dhumuntarao, Joseph Kapusta The Anti-de Sitter Space/Conformal Field Theory (AdS/CFT) correspondence proffers novel insights into the non-perturbative regime of strongly coupled gauge theories such as Quantum Chromodynamics (QCD). We present a 5-dimensional effective gravity dual to the 4-dimensional non-Abelian gauge theory of QCD. In addition, we constrain the model to a pure SU(3) gauge theory by suppressing chiral and axial fields, while maintaining a Glueball field. The conformal symmetry is broken by a background Dilaton field. The Glueball and Dilaton background fields are derived from a potential, which is constructed from the gravity/gauge duality. The potential is described in detail and undergoes numerical treatment to model the Glueball spectra. [Preview Abstract] |
Saturday, October 17, 2015 2:12PM - 2:24PM |
K6.00005: The Standard Model and an extension of color Richard Holmes Color, involving three states, red, green, and blue, plays a key role in quantum chromodynamics (QCD). A class of 3x3 Hamiltonian matrices are investigated that yield solutions that are isomorphic to the conventional color and anti-color states. Specific Hamiltonians are found via a 2-parameter search; the eigenvalues correspond with high accuracy to the measured or inferred masses of each of the 3 flavors of the two quark families of particle. The same eigenvectors apply to both quark families for each flavor generation. It is found that the same approach can be applied for the particle masses of the two lepton families. The masses of the different families arise as an orderly function of two search parameters. The incorporation of this extension of color into the Standard Model is discussed, with some interesting consequences. [Preview Abstract] |
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