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A high efficiency photon veto for the Light Dark Matter eXperiment

Åkesson, Torsten (author)
Lund University,Lunds universitet,Partikel- och kärnfysik,Fysiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Particle and nuclear physics,Department of Physics,Departments at LTH,Faculty of Engineering, LTH
Blinov, Nikita (author)
Fermi National Accelerator Laboratory
Bryngemark, Lene (author)
Stanford University
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Colegrove, Owen (author)
University of California, Santa Barbara
Collura, Giulia (author)
University of California, Santa Barbara
Dukes, Craig (author)
University of Virginia
Dutta, Valentina (author)
University of California, Santa Barbara
Echenard, Bertrand (author)
California Institute of Technology
Eichlersmith, Thomas (author)
University of Minnesota
Group, Craig (author)
University of Virginia
Hiltbrand, Joshua (author)
University of Minnesota
Hitlin, David G. (author)
California Institute of Technology
Incandela, Joseph (author)
University of California, Santa Barbara
Krnjaic, Gordan (author)
Fermi National Accelerator Laboratory
Lazaro, Juan (author)
University of California, Santa Barbara
Li, Amina (author)
University of California, Santa Barbara
Mans, Jeremiah (author)
University of Minnesota
Masterson, Phillip (author)
University of California, Santa Barbara
McCormick, Jeremy (author)
Stanford Linear Accelerator Center (SLAC)
Moreno, Omar (author)
Stanford Linear Accelerator Center (SLAC)
Mullier, Geoffrey (author)
Lund University,Lunds universitet,Partikel- och kärnfysik,Fysiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Particle and nuclear physics,Department of Physics,Departments at LTH,Faculty of Engineering, LTH
Nagar, Akshay (author)
University of California, Santa Barbara
Nelson, Timothy (author)
Stanford Linear Accelerator Center (SLAC)
Niendorf, Gavin (author)
University of California, Santa Barbara
Oyang, James (author)
California Institute of Technology
Petersen, Reese (author)
University of Minnesota
Pöttgen, Ruth (author)
Lund University,Lunds universitet,Partikel- och kärnfysik,Fysiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Particle and nuclear physics,Department of Physics,Departments at LTH,Faculty of Engineering, LTH
Schuster, Philip (author)
Stanford Linear Accelerator Center (SLAC)
Siegel, Harrison (author)
University of California, Santa Barbara
Toro, Natalia (author)
Stanford Linear Accelerator Center (SLAC)
Tran, Nhan (author)
Fermi National Accelerator Laboratory
Whitbeck, Andrew (author)
Texas Tech University
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 (creator_code:org_t)
 
2020
2020
English.
In: Journal of High Energy Physics. - 1126-6708. ; 2020:4
Related links:
http://dx.doi.org/10... (free)
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https://lup.lub.lu.s...
https://doi.org/10.1...
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  • Journal article (peer-reviewed)
Abstract Subject headings
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  • Fixed-target experiments using primary electron beams can be powerful discovery tools for light dark matter in the sub-GeV mass range. The Light Dark Matter eXperiment (LDMX) is designed to measure missing momentum in high-rate electron fixed-target reactions with beam energies of 4 GeV to 16 GeV. A prerequisite for achieving several important sensitivity milestones is the capability to efficiently reject backgrounds associated with few-GeV bremsstrahlung, by twelve orders of magnitude, while maintaining high efficiency for signal. The primary challenge arises from events with photo-nuclear reactions faking the missing-momentum property of a dark matter signal. We present a methodology developed for the LDMX detector concept that is capable of the required rejection. By employing a detailed Geant4-based model of the detector response, we demonstrate that the sampling calorimetry proposed for LDMX can achieve better than 10−13 rejection of few-GeV photons. This suggests that the luminosity-limited sensitivity of LDMX can be realized at 4 GeV and higher beam energies. [Figure not available: see fulltext.]

Subject headings

NATURVETENSKAP  -- Fysik -- Acceleratorfysik och instrumentering (hsv//swe)
NATURAL SCIENCES  -- Physical Sciences -- Accelerator Physics and Instrumentation (hsv//eng)
NATURVETENSKAP  -- Fysik -- Subatomär fysik (hsv//swe)
NATURAL SCIENCES  -- Physical Sciences -- Subatomic Physics (hsv//eng)

Keyword

Beyond Standard Model
Dark matter
Fixed target experiments

Publication and Content Type

art (subject category)
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