Friday, March 2, 2007, 2:00 pm — Small Seminar Room, Bldg. 510
Previous dilepton measurements in heavy-ion collisions have mainly focused on invariant mass spectra to clarify in-medium changes of vector meson properties. However, a dimuon is characterized by two scales -- invariant mass M and transverse momentum p_T. Like transverse momentum spectra of hadrons, p_T spectra of dileptons arise from an interplay between emission temperature and collective transverse flow, whereas the invariant mass is insensitive to flow. Having two control parameters of which only one is sensitive to flow allows at given M to characterize the emission region in terms of average temperature and flow. Thus, one is able to study what phases of the fireball evolution radiate into a given mass window. I demonstrate this technique using the dimuon transverse momentum spectra measured in InIn collisions by the NA60 collaboration and present strong arguments that a thermalized evolution phase with T 170 MeV leaves an imprint in the spectra.
Hosted by: Agnes Mocsy
3464 | INT/EXT | Events Calendar
Not all computers/devices will add this event to your calendar automatically.
A calendar event file named "calendar.ics" will be placed in your downloads location. Depending on how your device/computer is configured, you may have to locate this file and double click on it to add the event to your calendar.
Event dates, times, and locations are subject to change. Event details will not be updated automatically once you add this event to your own calendar. Check the Lab's Events Calendar to ensure that you have the latest event information.