Nuclear Physics Seminar

"A Hotspot Evolution Model for the proton's transverse gluon structure at small x"

Presented by Tobias Toll

Tuesday, June 13, 2023, 11:00 am — Small Seminar Room, Bldg. 510

Abstract: Observables in incoherent exclusive diffractive DIS at small x are sensitive to fluctuations in the spatial transverse density of the gluon wavefunction in the proton. The Hotspot model has shown success in describing the initial state of the proton in ep, pp and pA collisions. However, as a non-perturbative phenomenological model it is only applicable for small momentum transfers |t|. HERA data has measured the incoherent t-spectrum up to |t|=30 GeV2. We suggest an evolution model of hotspot splittings based on the spatial resolution in the measurement, which can evolve the initial gluon state of the proton in transverse space to all |t|. Our models contain several sources of geometrical fluctuations beyond position, such as hotspot width, number and normalisation at a given resolution. We compare a couple of different implementations of hotspot evolution and investigate what observable effects they have on longitudinal saturation of the gluon density.

Hosted by: Joao Lourenco Henriques Barata

Join Videoconference More Information

18980  |  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.