Generating Monte Carlo Data to Study the Backgrounds in πœ‹0 production in p+p collisions at RHIC

Faculty Sponsor

Shirvel Stanislaus


Arts and Sciences


Physics and Astronomy

Document Type

Poster Presentation

Symposium Date

Summer 7-30-2018


Generating Monte Carlo Data to Study the Backgrounds in πœ‹0 production in p+p collisions at RHIC

J.D. Snaidauf

Valparaiso University (STAR Collaboration)

Mentor: Prof. Stanislaus

The Solenoid Tracker at RHIC (STAR) experiment based at Brookhaven National Laboratory uses polarized p+p collisions to study the contributions of gluons to the spin of the proton. The STAR detector’s Endcap Electromagnetic Calorimeter (EEMC) covers a kinematic region of the detector that is sensitive to gluons carrying a low fraction of the proton momentum, where the gluon spin contribution is almost entirely unconstrained. The EEMC, located in the intermediate pseudorapidity range 1 < Ξ· < 2, measures the electromagnetic energy of particles produced in the collisions using a spatially segmented lead-scintillator sampling calorimeter. The gluon contribution can be determined by studying the πœ‹0 production from p+p collisions with different orientations of the spins of the colliding protons. πœ‹0’s are reconstructed using the energy deposited by the decay photons in the EEMC. The background under the πœ‹0 mass peak is determined using Monte Carlo generated data that is normalized to diphoton candidates outside the mass peak in the experimental data. The status of this effort will be reported.

Biographical Information about Author(s)

After having a successful academic year at Valpo, I wanted to do some research. I chose to do it because I believed it would be beneficial towards my understanding of physics and my ability to teach the subject in the future. I was correct. This summer has been extremely helpful to me in terms of learning new things about physics and helping me to instruct future students.

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