학술논문
Photon-rejection Power of the Light Dark Matter eXperiment in an 8 GeV Beam
Document Type
Working Paper
Author
Åkesson, Torsten; Bravo, Cameron; Brennan, Liam; Bryngemark, Lene Kristian; Butti, Pierfrancesco; Dukes, E. Craig; Dutta, Valentina; Echenard, Bertrand; Eichlersmith, Thomas; Eisch, Jonathan; Elén, Einar; Ehrlich, Ralf; Froemming, Cooper; Furmanski, Andrew; Gogate, Niramay; Grieco, Chiara; Group, Craig; Herde, Hannah; Herwig, Christian; Hitlin, David G.; Horoho, Tyler; Incandela, Joseph; Ketchum, Wesley; Krnjaic, Gordan; Li, Amina; Mans, Jeremiah; Masterson, Phillip; Middleton, Sophie; Moreno, Omar; Mullier, Geoffrey; Muse, Joseph; Nelson, Timothy; O'Dwyer, Rory; Östman, Leo; Oyang, James; Pascadlo, Jessica; Pöttgen, Ruth; Sarmiento, Luis G.; Schuster, Philip; Solt, Matthew; Suarez, Cristina Mantilla; Tompkins, Lauren; Toro, Natalia; Tran, Nhan; Wallin, Erik; Whitbeck, Andrew; Zhang, Danyi
Source
Subject
Language
Abstract
The Light Dark Matter eXperiment (LDMX) is an electron-beam fixed-target experiment designed to achieve comprehensive model independent sensitivity to dark matter particles in the sub-GeV mass region. An upgrade to the LCLS-II accelerator will increase the beam energy available to LDMX from 4 to 8 GeV. Using detailed GEANT4-based simulations, we investigate the effect of the increased beam energy on the capabilities to separate signal and background, and demonstrate that the veto methodology developed for 4 GeV successfully rejects photon-induced backgrounds for at least $2\times10^{14}$ electrons on target at 8 GeV.
Comment: 28 pages, 20 figures; corrected author list
Comment: 28 pages, 20 figures; corrected author list