BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//CERN//INDICO//EN
BEGIN:VEVENT
SUMMARY:Extraction of Giant Monopole Resonance strength with Multipole Dec
 omposition Analysis
DTSTART;VALUE=DATE-TIME:20260520T095500Z
DTEND;VALUE=DATE-TIME:20260520T101500Z
DTSTAMP;VALUE=DATE-TIME:20260624T055009Z
UID:indico-contribution-3839@indico.tlabs.ac.za
DESCRIPTION:Speakers: Lesedi Jafta (iThemba LABS)\nIt has been established
  that inelastic alpha scattering at a few hundreds MeV\, particularly at v
 ery forward scattering angles including 0◦\, is effective for probing th
 e Isoscalar Giant Monopole Resonance (ISGMR) strength distribution (E0) in
  atomic nuclei. Two previous studies on the evolution of the ISGMR in the 
 even-even 40\,42\,44\,48Ca isotopes were conducted at two different facili
 ties: the Research Center for Nuclear Physics (RCNP) and the Texas A&M Uni
 versity Cyclotron Institute (TAMU). These studies produced conflicting res
 ults regarding the systematic trend of nuclear incompressibility across th
 e calcium isotopic chain under investigation.\n\nIn response\, the iThemba
  LABS group conducted an independent study of the same\nisotopes to invest
 igate the potential origins of these discrepancies. Measurements\nwere car
 ried out at 0◦ and 4◦ scattering angles\, and an energy-dependent vers
 ion of the difference-of-spectra (DoS) method was initially employed. Whil
 e this method offers high energy resolution\, it relies on the strength co
 ntributions of all L ≥ 0 multipolarity components published in the liter
 ature\, thereby compromising the independence of our results. To address t
 his\, Multipole Decomposition Analysis (MDA) was applied to extract the E0
  strength distributions. Although the limited angular range may reduce the
  precision for higher multipolarity strengths\, it does allow for the accu
 rate extraction of the E0 component independently of other studies.\n\nTwo
  MDA methods were used in the analysis: the emcee Python code\, which empl
 oys the sophisticated Markov Chain Monte Carlo (MCMC) sampling algorithm\,
 \nand a second MDA method is based on the MINUIT algorithm\, implemented w
 ithin\nthe ROOT data analysis framework. Selected results obtained using b
 oth methods\nwill be presented at the workshop.\n\nThis research work is s
 upported by the National Research Foundation (ref no:\nPMDS22062727817).\n
 \nhttps://indico.tlabs.ac.za/event/139/contributions/3839/
LOCATION:NRF-iThemba LABS\, Old Faure Road\, Cape Town Auditorium
URL:https://indico.tlabs.ac.za/event/139/contributions/3839/
END:VEVENT
END:VCALENDAR