Standard Model HγγH \gamma \gamma discovery potential with ATLAS

This contribution summarizes the discovery potential of the Standard Model Higgs boson using the $H \gamma \gamma$ decay with the ATLAS detector. The relevant detector performance aspects of photon reconstruction, photon identification and trigger issues are discussed. The potential of inclusive $H \gamma \gamma$ as well as Higgs boson searches in association with one or two hard jets are studied. The discovery potential is finally assessed using an unbinned multivariate maximum-likelihood fit with an expected integrated luminosity of $\approx 10 fb^{-1}$.Comment: 5 pages, 4 figures, Contribution to Conference LHC0

Instantaneous Symmetry Breaking to the Non-observed Dark Matter

A theory explaining the non-observation of the dark matter and the source of the dark energy is presented in this letter. By integrating the asymmetrical potential and the Higgs potential, we provide a model with instantaneous symmetrical breaking and stable symmetrical breaking, resulting in the non-observed dark matter and observed matter respectively. Two crucial parameters in this model are the frequency and strength of the symmetry breaking from the vacuum: the former helps explain the impact of the effective mass from the dark matter; the latter determines the source of the dark energy. The expected strength in a certain period varies, causing the accelerating or deccelerating expansions of the universe. Considering the expected strength correlated with the vacuum expectation value and basing on the possible variations of the measured masses of the fundamental particles such as Z boson over time, one can perhaps derive the exact stage of the current universe

Search for SM Higgs Decaying to Two Photons via ATLAS Detector

This dissertation reports the discovery potential of the Standard Model Higgs boson with the di-photon decay using the ATLAS detector. First, photon calibration techiques is studied and a likelihood method for photon identification and jet rejection is developed. A method to evaluate photon identification and fake photon backgrounds with data was also discussed. The potential of an inclusive SM Higgs decaying to two photons search and Higgs boson searches in association with one or two high $P_T$ jets is evaluated. Finally an extended maximum likelihood fit together with event classifications was performed to estimate the sensitivity of the search. With 30 fb$^{-1}$ data, the expected sensitivity for the channel Higgs decaying to two photons is above 5 sigma for Higgs masses between 120 and 140 GeV

Searching for Heavier Higgs Boson via Di-Higgs Production at LHC Run-2

The LHC discovery of a light Higgs particle $h^0$ (125GeV) opens up new prospect for searching heavier Higgs boson(s) at the LHC Run-2, which will unambiguously point to new physics beyond the standard model (SM). We study the detection of a heavier neutral Higgs boson $H^0$ via di-Higgs production channel at the LHC (14TeV), $H^0 \to h^0h^0 \to WW^*\gamma\gamma$. This directly probes the $Hhh$ cubic Higgs interaction, which exists in most extensions of the SM Higgs sector. For the decay products of final states $WW^*$, we include both pure leptonic mode $WW^* \to \ell\bar{\nu}\bar{\ell}\nu$ and semi-leptonic mode $WW^* \to q\bar{q}'\ell\nu$. We analyze signals and backgrounds by performing fast detector simulation for the full processes $pp \to H \to hh \to WW^*\gamma\gamma \to \ell\bar{\nu}\bar{\ell}\nu\gamma\gamma$ and $pp \to H \to hh \to WW^*\gamma\gamma \to \ell\nu q\bar{q}'\gamma\gamma$, over the mass range $M_H=250-600$GeV. For generic two-Higgs-doublet models (2HDM), we present the discovery reach of the heavier Higgs boson at the LHC Run-2, and compare it with the current Higgs global fit of the 2HDM parameter space.Comment: Phys.Lett.B Final Version. 16pp (9 Figs + 4 Tables). Only minor refinements, references adde

LHC Search of New Higgs Boson via Resonant Di-Higgs Production with Decays into 4W

Searching for new Higgs particle beyond the observed light Higgs boson h(125GeV) will unambiguously point to new physics beyond the standard model. We study the resonant production of a CP-even heavy Higgs state $H^0$ in the di-Higgs channel via, $gg\to H^0\to h^0h^0\to WW^*WW^*$, at the LHC Run-2 and the high luminosity LHC (HL-LHC). We analyze two types of the $4W$ decay modes, one with the same-sign di-leptons ($4W\to\ell^\pm\nu\ell^\pm\nu 4q$) and the other with tri-leptons ($4W\to\ell^\pm\nu\ell^\mp\nu\ell^\pm\nu 2q$). We perform a full simulation for the signals and backgrounds, and estimate the discovery potential of the heavy Higgs state at the LHC Run-2 and the HL-LHC, in the context of generical two-Higgs-doublet models (2HDM). We determine the viable parameter space of the 2HDM as allowed by the theoretical constraints and the current experimental limits. We systematically analyze the allowed parameter space of the 2HDM which can be effectively probed by the heavy Higgs searches of the LHC, and further compare this with the viable parameter region under the current theoretical and experimental bounds.Comment: v3: JHEP published version, 34pp, 10 Figs(36 plots) and 9 Tables. Only minor typos fixed, references added. v2: JHEP version. All results and conclusions un-changed, discussions and references added. (This update is much delayed due to author's traveling and flu.

E-Commerce Teaching Via Project-Based Learning at Open Access College Advances USG STEM Goals

Georgia Gwinnett College (GGC) is a 4-year USG public institution with an “open access” undergraduate program. There is a need to help GGC students learn academic content and develop critical skills that include thinking and reasoning, information analysis, and proficient collaboration. This presentation proposes a STEM incubator project by using Project-Based Learning (PBL) to teach Mobile and e-Commerce at GGC. The objective of this presentation is to demonstrate to college professors and other scholarly audiences how this hands-on methodology advances the goals of the USG STEM Initiative. Our preliminary survey results showed that 90% of respondents strongly agreed that project-based e-Commerce helped them combine content knowledge with critical thinking and reasoning skills, and 94% agree that skills learned from project-based e-Commerce can enhance their future employment opportunities. The session will discuss lessons learned and the future evolution of the course. The presentation will offer recommendations for USG IT professors who wish to promote the goals of STEM scholarship

Assessing Learning Outcomes of a MOOC Incorporated Into an on-Campus Management Information Systems Class

Massive open source online course (MOOC) platform enables enterprises to introduce their new innovations and deliver basic knowledge to handle the new products. We incorporated an openSAP course into a management information systems (MIS) class. Students learned the latest development of SAP customer relationship management (CRM) solutions along with the SAP enterprise resource planning (ERP) business processes integration that they learned in the classroom. 46.2% of the students obtained Record of Achievement and Confirmation of Participation certificates, which is higher than the average success rate of MOOCs. More importantly, the students experienced a way of sustainable and lifelong learning

TO CLOSE THE SKILLS GAP, TECHNOLOGY AND HIGHER-ORDER THINKING SKILLS MUST GO HAND IN HAND

Technology is rapidly changing the business landscape. Workforce skills gap is widening in the digital business environment. Universities and employers call for developing students’ higher-order thinking skills along with integrating technology into academic curricula. We conducted a survey to assess learning outcomes from two groups of undergraduate students: business majors and information technology (IT) majors. SAP ERP hands-on case studies were used for this comparative experiment. The student survey results showed that the students of both majors believed that learning SAP software can lead to more rewarding jobs and they felt confident about their competitiveness in the job market. Although IT majors with stronger technology background have a better understanding of how SAP ERP works with technology than business majors, the findings suggested that both groups of students need to improve their critical thinking, problem-solving and decision-making skills in order to become creative innovators. Differences between academic backgrounds and professional qualifications demand collaboration and professional communication skills at higher education and workplaces. In addition, an alliance between higher education and industry is a promising way to advance education and training for enhancing students’ right skills needed in the dynamic business environmen

A Rank-and-Choose Decision Model for Vendor Selection with Bundling

The selection of vendors is an important aspect of strategic management and operational decision making. The methods and process of vendor selection have undergone great changes during the past years, and the criteria and methods of vendor selection have changed and improved to a large extent. The single-item, multiple-vendor selection problem is well studied in the vendor selection literature. However, only a few papers in the literature discuss the multiple-item, multiple-vendor selection problem. This paper presents a new rank-and-choose decision model for vendor selection problem. The proposed approach is illustrated by a numerical example