10,811 research outputs found

    Lorentz and CPT Violation in the Higgs Sector

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    Colladay and Kostelecky have proposed a framework for studying Lorentz and CPT violation in a natural extension of the Standard Model. Although numerous bounds exist on the Lorentz and CPT violating parameters in the gauge boson and fermion sectors, there are no published bounds on the parameters in the Higgs sector. We determine these bounds. The bounds on the CPT-even asymmetric coefficients arise from the one-loop contributions to the photon propagator, those from the CPT-even symmetric coefficients arise from the equivalent c_{\mu\nu} coefficients in the fermion sector, and those from the CPT-odd coefficient arise from bounds on the vacuum expectation value of the Z-boson.Comment: 17 pages, 1 figure, 1 table; Clarifications and changes to text, results unchanged. References added. Version to be published in Physical Review

    Cost effectiveness analysis of using different monitoring modalities in treating severe traumatic brain injury (CESTBI) in neuro-ICU, HUSM, Kelantan

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    Introduction: There are two schools of thought in practicing neurotrauma monitoring for patients with severe traumatic brain injury (TBI); the application of the baseline neuro-monitoring (BNM) and the use of multiple modalities neurotrauma monitoring (M3) which is very expensive. The answer of which of the two monitoring systems is more eflicient and worth doing should be sought. Objective: To determine the cost effectiveness analysis between BNM and M3 monitoring modalities in the management of severe TBI. Methodology: Sixty-two patients with severe TBI admitted to Neuro-ICU, USM who fulfilled the predetermined criteria were selected using systematic random sampling. The macro and micro costing were performed on each of patient. Barthel Index was used to measure physical performance as an outcome six months after discharge. The analyses used were the Independent t- test, ANCOVA, and Repeated Measure ANOVA. Results: The mean total equipment cost of M3 was significantly higher at p = 0.049 (mean difference of RM23.74) after controlling other variables. The mean difference in Barthel Index after six months was significance between the two groups (p = 0.031), patients that were treated with M3 had higher score 163.7 (SD 30.03)J compared to those who were treated with BNM 146.83 (SD 30.36)]. However, the cost-effectiveness ratio of using M3 was significantly lowered (p=O.031) with a mean of RM476.29 was needed to increase a unit improvement in mean Barthel Index compared to RM629.12 if we used BNM. Conclusion: Although M3 is more costly, the outcome of patients treated with M3 was better than that of BNM. Therefore we can conclude that the used of multiple neuro-monitoring was more cost effective than the use of only baseline neuro-monitoring in treating severe traumatic brain injury

    Anomaly-induced Quadrupole Moment of the Neutron in Magnetic Field

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    The neutrons cannot possess a quadrupole moment in the vacuum. Nevertheless, we show that in the presence of an external magnetic field the neutrons acquire a new type of quadrupole moment Qij=χ σiBjQ^{ij}= \chi\,\sigma^i B^j involving the components of spin and magnetic field. This "chiral magnetic" quadrupole moment arises from the interplay of the chiral anomaly and the magnetic field; we estimate its value for the neutron in the static limit, and find χ≃1.35⋅10−2 fm4\chi \simeq 1.35\cdot10^{-2}\,{\rm fm}^4. The detection of the quadrupole moment of the neutron would provide a novel test of the role of the chiral anomaly in low-energy QCD and can be possible in the presence of both magnetic and inhomogeneous electric fields. The quadrupole moment of the neutron may affect e.g. the properties of neutron stars and magnetars.Comment: 2 pages; extended versio

    Lessons and Prospects from the pMSSM after LHC Run I: Neutralino LSP

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    We study SUSY signatures at the 7, 8 and 14 TeV LHC employing the 19-parameter, R-Parity conserving p(henomenological)MSSM, in the scenario with a neutralino LSP. Our results were obtained via a fast Monte Carlo simulation of the ATLAS SUSY analysis suite. The flexibility of this framework allows us to study a wide variety of SUSY phenomena simultaneously and to probe for weak spots in existing SUSY search analyses. We determine the ranges of the sparticle masses that are either disfavored or allowed after the searches with the 7 and 8 TeV data sets are combined. We find that natural SUSY models with light squarks and gluinos remain viable. We extrapolate to 14 TeV with both 300 fb−1^{-1} and 3 ab−1^{-1} of integrated luminosity and determine the expected sensitivity of the jets + MET and stop searches to the pMSSM parameter space. We find that the high-luminosity LHC will be powerful in probing SUSY with neutralino LSPs and can provide a more definitive statement on the existence of natural Supersymmetry.Comment: 41 pages, 27 figures. arXiv admin note: substantial text overlap with arXiv:1307.844

    Aplikasi Billing Playstation Berbasis Desktop (Studi Kasus : Azea Game Center 2015).

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    Azea Game center adalah USAha yang bergerak di bidang jasa penyewaan perangkat game. Kegiatan bisnis ini dapat dilaporkan setiap hari. Penulisan laporan di lakukan oleh admin dengan melampirkan buku besar kepada pemilik. Hal ini tentunya belum akurat di karenakan masih mengunakan sistem manual, sistem manual seperti itu dirasa penulis sudah tidak efektif untuk digunakan, Oleh sebab itu perlu dibuat suatu sistem komputerisasi yang dapat melengkapi kebutuhan sistem manual ini. Hal inila h yang mendorong penulis membuat suatu aplikasi billing playstation berbasis desktop dengan mengunakan VB.Net 2010. Penelitian ini bertujuan untuk membuat suatu aplikasi yang dapat melaporkan kegiatan pada Azea Game Center sehingga pengolahan game center akan terlihat dengan jelas. Dan mempermudah admin dalam melakukan pengolahan data, seperti input data, edit data dan menghapus data. Ataupun pengambila n data untuk membantu dalam membuat laporan yang nantiya akan di berikan kepada pimpinan. Penulis juga berharap dengan dibuatnya aplikasi ini dapat membantu operator dalam menjalankan operasional dan memiliki prospek kerja yang lebih baik lagi
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