Essays about: "decay constant"

Showing result 1 - 5 of 18 essays containing the words decay constant.

  1. 1. Fitting the pion and kaon mass and decay constant to lattice data

    University essay from Lunds universitet/Teoretisk partikelfysik

    Author : Hector Tiblom; [2021]
    Keywords : chiral perturbation theory; lattice QCD; pion mass; kaon mass; decay constant; low-energy QCD; Physics and Astronomy;

    Abstract : We use lattice QCD data to perform a fit of the pion and kaon mass and decay constant to next-to-next-to-leading order (NNLO) in three-flavor Chiral Perturbation Theory (ChPT). To improve our fits, we make use of finite volume corrections at both one- and two-loop order. This turns out to provide a small but noticeable improvement of our fits. READ MORE

  2. 2. Measurement of timescales of cortical neuronal activity in behaving mice

    University essay from KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Author : Sasa Lekic; [2021]
    Keywords : Neural activity; prefrontal cortex; visual cortex; Timescale; Spike trains; Functional hierarchy; Neural aktivitet; PFC; Timescale; Spike train; Funktionell hierarki;

    Abstract : Electrical activity is omnipresent throughout the brain, and it varies dependant on the brain region. Areal hierarchy has been suggested to be one of the main principles of the organization of the brain, but there is not a lot of evidence available related to the specialization of the brain’s regions in the temporal domain, that is, how the activity evolves over time. READ MORE

  3. 3. Evaluation of internal dosimetry for 225- Ac using one single measurement based on 111-In imaging

    University essay from Lunds universitet/Sjukhusfysikerutbildningen

    Author : Selma Curkic; [2021]
    Keywords : Medicine and Health Sciences;

    Abstract : Background and aim: There is a high interest in determining the absorbed dose in tumors and organs for various radiotherapy cancer treatments. Due to limitations in today's methods of determining the patient specific absorbed dose it is usually not proceeded clinically. READ MORE

  4. 4. Dark Photon decay generated by muons in the SHiP experiment

    University essay from Uppsala universitet/Institutionen för materialvetenskap

    Author : Elizaveta Yakovleva; [2020]
    Keywords : dark matter; particle physics; particle accelerators; new physics;

    Abstract : This project has investigated the muon background of the SHiP experiment to determine whether it can boost the experiment sensitivity to visible Dark Photon decay. Using Fermi-Weizsäcker-Williams approximation to muon scattering we found the probability of muons generating massive photons, using Bremsstrahlung and direct lepton pair production as an estimation of the frequency of muon EM-interactions. READ MORE

  5. 5. Attractor Neural Network modelling of the Lifespan Retrieval Curve

    University essay from KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Author : Patrícia Pereira; [2020]
    Keywords : reminiscence bump; attractor neural network; Bayesian Confidence Propagation Neural Network BCPNN ; recency; synaptic plasticity; episodic memory; ”reminiscence bump”; attraktorneuronnät; Bayesian Confidence Propagation Neural Network BCPNN ; nysseffekt; synaptisk plasticitet; episodiskt mine.;

    Abstract : Human capability to recall episodic memories depends on how much time has passed since the memory was encoded. This dependency is described by a memory retrieval curve that reflects an interesting phenomenon referred to as a reminiscence bump - a tendency for older people to recall more memories formed during their young adulthood than in other periods of life. READ MORE