13,923 research outputs found
Phenomenology of SU(5) low-energy realizations: the diphoton excess and Higgs flavor violation
We discuss different low-energy realizations and illustrate their
use with the diphoton excess and Higgs flavor violation, which require new
physics at the TeV scale. In particular, we study two scenarios for a GeV
resonance: in the first one the resonance belongs to the adjoint of , being either an singlet or a triplet, while in the second
case the signal is due to the CP-even and CP-odd states of a new
Higgs doublet belonging to a or a representations,
giving rise to a two-Higgs doublet model at low energies. We study the
fine-tuning needed for the desired members of the multiplets to be light
enough, while having the rest at the GUT scale. In these scenarios, the
production and decay into photons of the new resonance are mediated by the
leptoquarks (LQ) present in these large representations. We analyse
the phenomenology of such scenarios, focusing on the most relevant predictions
that can help to disentangle the different models, like decays into gauge
bosons, Standard Model (SM) fermions and LQs pair production. In the case of
the (the Georgi-Jarlskog model), we also study the possibility to
have Higgs flavor violation. We find that mixing limits (in addition to
) always imply that .Comment: Minor clarifications and references added, typos corrected, matches
published version in NP
Topological susceptibility from twisted mass fermions using spectral projectors
We discuss the computation of the topological susceptibility using the method
of spectral projectors and dynamical twisted mass fermions. We present our
analysis concerning the O(a)-improvement of the topological susceptibility and
we show numerical results for Nf=2 and Nf=2+1+1 flavours, performing a study of
the quark mass dependence in terms of leading order chiral perturbation theory.Comment: 7 pages, 3 figures; presented at the 31st International Symposium on
Lattice Field Theory (Lattice 2013), 29 July - 3 August 2013, Mainz, German
Non-perturbative production of matter and rapid thermalization after MSSM inflation
A {\it gauge invariant} combination of LLe {\it sleptons} within the Minimal
Supersymmetric Standard Model is one of the few inflaton candidates that can
naturally explain population of the observable sector and creation of matter
after inflation. After the end of inflation, the inflaton oscillates coherently
about the minimum of its potential, which is a point of {\it enhanced gauged
symmetry}. This results in bursts of non-perturbative production of the
gauge/gaugino and (s)lepton quanta. The subsequent decay of these quanta is
very fast and leads to an extremely efficient transfer of the inflaton energy
to (s)quarks via {\it instant} preheating. Around 20% of the inflaton energy
density is drained during every inflaton oscillation. However, all of the
Standard Model degrees of freedom (and their supersymmetric partners) {\it do
not} thermalize immediately, since the large inflaton vacuum expectation value
breaks the electroweak symmetry. After about 100 oscillations -- albeit within
one Hubble time -- the amplitude of inflaton oscillations becomes sufficiently
small, and all of the degrees of freedom will thermalize. This provides by far
the most efficient reheating of the universe with the observed degrees of
freedom.Comment: 13 pages, 3 figures. Comments and references added to match the final
version accepted for publication in Phys. Rev.
Computation of the chiral condensate using and dynamical flavors of twisted mass fermions
We apply the spectral projector method, recently introduced by Giusti and
L\"uscher, to compute the chiral condensate using and
dynamical flavors of maximally twisted mass fermions. We present our results
for several quark masses at three different lattice spacings which allows us to
perform the chiral and continuum extrapolations. In addition we report our
analysis on the improvement of the chiral condensate for twisted mass
fermions. We also study the effect of the dynamical strange and charm quarks by
comparing our results for and dynamical flavors.Comment: 7 pages, 3 figures; presented at the 31st International Symposium on
Lattice Field Theory (Lattice 2013), 29 July - 3 August 2013, Mainz, German
Onboarding Transfer Students at the University of San Diego
In this study, I explored the experiences and needs of transfer students at the University of San Diego (USD) through assessment analysis, the implementation and observations of Spring orientation, and student leader surveys. My positionality as a graduate assistant for New Student Onboarding allowed me to implement Spring orientation programming, analyze postorientation assessment data, and survey transfer student leaders about their experiences. This study provided me a better understanding of how we as a department and an institution as a whole can improve how we onboard our transfer students and further support them throughout their undergraduate career. While cultivating a sense of belonging for transfer students is important, their most basic and essential need is ensuring they have the necessary resources to achieve academic success. Contrary to their first-year counterparts, transfer students have less time to complete their degree once at a four-year institution and research indicates much of their anxiety is due to their academics and pressure to graduate within two to three years. Through this study, I learned USD can improve transfer students’ transition to campus by being timelier with admission and connecting students with an advisor. Additionally, the onboarding process should be comprised of only essential information to mitigate overload. And lastly, I learned equipping faculty with resources on how best to support their transfer students would help students feel valued
Optimizing Sepsis Management Through Enhanced Protocol Compliance in the Emergency Department
Problem: Compliance and timeliness with the sepsis bundle protocol are continuously increasing, resulting in poor patient outcomes. This quality improvement project aims to increase sepsis bundle compliance and earlier sepsis management in the Emergency Department (ED) to reduce sepsis mortality rates and length of hospital stay.
Context: Hospital A’s emergency department is a level II adult trauma center located in the Greater Bay Area that treats a range of patients presenting with life-threatening diagnoses such as sepsis, traumatic injuries, and electrolyte imbalances.
Interventions: The sepsis committee team was provided recommendations to implement post-data analysis. Interventions recommended included standardizing and increasing sepsis training frequency, creating case reviews on near misses, using hands-on sepsis simulations, and refining technology-assisted intravenous (IV) placement. Additional resources included badge buddy cards with visual aids detailing sepsis guidelines and incorporating automated warning parameters into the EPIC system.
Measures: A randomized chart audit was used to find discrepancies in sepsis bundle compliance. Surveys comprised of 9 open-ended questions were distributed to staff members to assess where change is needed to achieve a higher rate of sepsis bundle compliance.
Results: Post-analysis of random audited charts regarding sepsis bundle compliance provided by Hospital A revealed a 41% compliance rate. Training, education, and barriers to the sepsis bundle were the most prominent findings in the inability to implement the bundle promptly.
Conclusion: After collecting and analyzing data from the questionnaire, the team identified opportunities such as the inability to meet sepsis protocol compliance stemmed from a lack of sepsis training frequency, insufficient remedial or debriefing processes, a missing ED sepsis screening policy, and a faulty charting system. In presenting this data to the sepsis faculty at Hospital A, our recommendations include increasing training frequency, establishing an ED-specific sepsis screening policy, creating badge reel cards that detail sepsis policies and escalation processes, and revising the current charting system to increase bundle compliance. Post-intervention data was unable to be collected due to time constraint
SARS-CoV-2: Current Therapeutics Human and Veterinary Medicine
The Severe Acute Respiratory Syndrome Coronavirus 2, SARS-CoV-2, was first reported in Wuhan City, China, in December 2019. Health and environmental risk factors are crucial in this current pandemic, yet it is essential to note that even though individuals of all ages are susceptive to this virus, there are risk factors associated with developing the severe disease. It is also eminent to establish the human-animal interaction by tackling important past pathogenic viruses such as SARS-CoV and MERS-CoV and its zoonotic links. In need of a clinically established management for this outbreak, approved drugs\u27 therapeutic interventions could help treat this disease, targeting its replication. The need to resolve the current pandemic of COVID-19 epitomizes the need for a different approach, drug repurposing. Characterization of artificial intelligence created by predicted models and structures could alleviate COVID-19; it has been used not only in the development of drugs but also in tackling screening, treatment, and contact tracing. This review presents pathogenesis, transmission, and the analysis of drug repositioning in both human and veterinary medicine of SARS-CoV-2 to delve into practical approaches to manage this disease
- …