Photon-rejection power of the Light Dark Matter eXperiment in an 8 GeV beam

Torsten Åkesson; Cameron Bravo; Liam Brennan; Lene Kristian Bryngemark; Pierfrancesco Butti; E. Craig Dukes; Valentina Dutta; Bertrand Echenard; Thomas Eichlersmith; Jonathan Eisch; Einar Elén; Ralf Ehrlich; Cooper Froemming; Andrew Furmanski; Niramay Gogate; Chiara Grieco; Craig Group; Hannah Herde; Christian Herwig; David G. Hitlin; Tyler Horoho; Joseph Incandela; Wesley Ketchum; Gordan Krnjaic; Amina Li; Jeremiah Mans; Phillip Masterson; Sophie Middleton; Omar Moreno; Geoffrey Mullier; Joseph Muse; Timothy Nelson; Rory O’Dwyer; Leo Östman; James Oyang; Jessica Pascadlo; Ruth Pöttgen; Luis G. Sarmiento; Philip Schuster; Matthew Solt; Cristina Mantilla Suarez; Lauren Tompkins; Natalia Toro; Nhan Tran; Erik Wallin; Andrew Whitbeck; Danyi Zhang

doi:10.1007/JHEP12(2023)092

Photon-rejection power of the Light Dark Matter eXperiment in an 8 GeV beam

Torsten Åkesson, Cameron Bravo, Liam Brennan, Lene Kristian Bryngemark, Pierfrancesco Butti, E. Craig Dukes, Valentina Dutta, Bertrand Echenard, Thomas Eichlersmith, Jonathan Eisch, Einar Elén, Ralf Ehrlich, Cooper Froemming, Andrew Furmanski, Niramay Gogate, Chiara Grieco, Craig Group, Hannah Herde, Christian Herwig, David G. HitlinTyler Horoho, Joseph Incandela, Wesley Ketchum, Gordan Krnjaic, Amina Li, Jeremiah Mans, Phillip Masterson, Sophie Middleton, Omar Moreno, Geoffrey Mullier, Joseph Muse, Timothy Nelson, Rory O’Dwyer, Leo Östman, James Oyang, Jessica Pascadlo, Ruth Pöttgen, Luis G. Sarmiento, Philip Schuster, Matthew Solt, Cristina Mantilla Suarez, Lauren Tompkins, Natalia Toro, Nhan Tran, Erik Wallin, Andrew Whitbeck, Danyi Zhang

Physics and Astronomy (Twin Cities)

Research output: Contribution to journal › Article › peer-review

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 × 10¹⁴ electrons on target at 8 GeV. [Figure not available: see fulltext.]

Original language	English (US)
Article number	92
Journal	Journal of High Energy Physics
Volume	2023
Issue number	12
DOIs	https://doi.org/10.1007/JHEP12(2023)092
State	Published - Dec 2023

Bibliographical note

Publisher Copyright:
© 2023, The Author(s).

Keywords

Beyond Standard Model
Dark Matter
Fixed Target Experiments

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Åkesson, T., Bravo, C., Brennan, L., Bryngemark, L. K., Butti, P., Dukes, E. C., Dutta, V., Echenard, B., Eichlersmith, T., Eisch, J., Elén, E., Ehrlich, R., Froemming, C., Furmanski, A., Gogate, N., Grieco, C., Group, C., Herde, H., Herwig, C., ... Zhang, D. (2023). Photon-rejection power of the Light Dark Matter eXperiment in an 8 GeV beam. Journal of High Energy Physics, 2023(12), Article 92. https://doi.org/10.1007/JHEP12(2023)092

Åkesson, T, Bravo, C, Brennan, L, Bryngemark, LK, Butti, P, Dukes, EC, Dutta, V, Echenard, B, Eichlersmith, T, Eisch, J, Elén, E, Ehrlich, R, Froemming, C, Furmanski, A, Gogate, N, Grieco, C, Group, C, Herde, H, Herwig, C, Hitlin, DG, Horoho, T, Incandela, J, Ketchum, W, Krnjaic, G, Li, A, Mans, J, Masterson, P, Middleton, S, Moreno, O, Mullier, G, Muse, J, Nelson, T, O’Dwyer, R, Östman, L, Oyang, J, Pascadlo, J, Pöttgen, R, Sarmiento, LG, Schuster, P, Solt, M, Suarez, CM, Tompkins, L, Toro, N, Tran, N, Wallin, E, Whitbeck, A & Zhang, D 2023, 'Photon-rejection power of the Light Dark Matter eXperiment in an 8 GeV beam', Journal of High Energy Physics, vol. 2023, no. 12, 92. https://doi.org/10.1007/JHEP12(2023)092

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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 × 1014 electrons on target at 8 GeV. [Figure not available: see fulltext.]",

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AU - Bravo, Cameron

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AU - Butti, Pierfrancesco

AU - Dukes, E. Craig

AU - Dutta, Valentina

AU - Echenard, Bertrand

AU - Eichlersmith, Thomas

AU - Eisch, Jonathan

AU - Elén, Einar

AU - Ehrlich, Ralf

AU - Froemming, Cooper

AU - Furmanski, Andrew

AU - Gogate, Niramay

AU - Grieco, Chiara

AU - Group, Craig

AU - Herde, Hannah

AU - Herwig, Christian

AU - Hitlin, David G.

AU - Horoho, Tyler

AU - Incandela, Joseph

AU - Ketchum, Wesley

AU - Krnjaic, Gordan

AU - Li, Amina

AU - Mans, Jeremiah

AU - Masterson, Phillip

AU - Middleton, Sophie

AU - Moreno, Omar

AU - Mullier, Geoffrey

AU - Muse, Joseph

AU - Nelson, Timothy

AU - O’Dwyer, Rory

AU - Östman, Leo

AU - Oyang, James

AU - Pascadlo, Jessica

AU - Pöttgen, Ruth

AU - Sarmiento, Luis G.

AU - Schuster, Philip

AU - Solt, Matthew

AU - Suarez, Cristina Mantilla

AU - Tompkins, Lauren

AU - Toro, Natalia

AU - Tran, Nhan

AU - Wallin, Erik

AU - Whitbeck, Andrew

AU - Zhang, Danyi

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Photon-rejection power of the Light Dark Matter eXperiment in an 8 GeV beam

Abstract

Bibliographical note

Keywords

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