[Jlabsa_gs] **Today** Lunch Seminar - Wednesday, May 24, 2017 - A Message From Hari Areti

[Jodi Patient]

Thank you to all of those who RSVP'd.  See you at noon today in L102.


Jefferson Lab's Graduate Student and Post-Doc Association Wiki:
  https://gspda.jlab.org/wiki/index.php/Main_Page

               Please RSVP to:  patient at jlab.org by 11:00 am on Monday, May 22, 2017


                                 Wednesday, May 24, 2017

                                         ***L102***

                                        12:00-1:00 pm


                            "Searching for Heavy Photons in Hall B"         


                                     Holly Szumila-Vance 

        
                                   Old Dominion University                                     

Abstract:

The Heavy Photon Search (HPS) experiment at Jefferson Lab is searching for
a hypothetical massive particle called the heavy photon which could
mediate a dark electromagnetic-type force. If heavy photons kinetically
mix with Standard Model photons, they may be radiated by electrons
scattering from a heavy nucleus and then decay to e+e- pairs. HPS uniquely
searches for heavy photons that either decay at the target or a measurable
distance after. The experiment utilizes a silicon vertex tracker for
momentum and vertex reconstruction, together with an electromagnetic
calorimeter for measuring particle energies and triggering events. The HPS
experiment took its first data during the spring of 2015 using a 1 GeV
electron beam incident on a tungsten target and completed a second run in
the spring of 2016 at a beam energy of 2.3 GeV. This talk will describe
detector and run details, along with preliminary results from the 1 GeV
data.