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26 results on '"Doughty P"'

1. Search for low-mass dark matter with CDMSlite using a profile likelihood fit

Author

Agnese, R, Aralis, T, Aramaki, T, Arnquist, IJ, Azadbakht, E, Baker, W, Banik, S, Barker, D, Bauer, DA, Binder, T, Bowles, MA, Brink, PL, Bunker, R, Cabrera, B, Calkins, R, Cameron, RA, Cartaro, C, Cerdeño, DG, Chang, Y-Y, Cooley, J, Cornell, B, Cushman, P, De Brienne, F, Doughty, T, Fascione, E, Figueroa-Feliciano, E, Fink, CW, Fritts, M, Gerbier, G, Germond, R, Ghaith, M, Golwala, SR, Harris, HR, Herbert, N, Hong, Z, Hoppe, EW, Hsu, L, Huber, ME, Iyer, V, Jardin, D, Jastram, A, Jena, C, Kelsey, MH, Kennedy, A, Kubik, A, Kurinsky, NA, Lawrence, RE, Loer, B, Asamar, E Lopez, Lukens, P, MacDonell, D, Mahapatra, R, Mandic, V, Mast, N, Miller, E, Mirabolfathi, N, Mohanty, B, Mendoza, JD Morales, Nelson, J, Neog, H, Orrell, JL, Oser, SM, Page, WA, Partridge, R, Pepin, M, Ponce, F, Poudel, S, Pyle, M, Qiu, H, Rau, W, Reisetter, A, Ren, R, Reynolds, T, Roberts, A, Robinson, AE, Rogers, HE, Saab, T, Sadoulet, B, Sander, J, Scarff, A, Schnee, RW, Scorza, S, Senapati, K, Serfass, B, Speller, D, Stanford, C, Stein, M, Street, J, Tanaka, HA, Toback, D, Underwood, R, Villano, AN, von Krosigk, B, Watkins, SL, Wilson, JS, Wilson, MJ, Winchell, J, Wright, DH, Yellin, S, and Young, BA

Subjects
astro-ph.CO, physics.ins-det, Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Nuclear & Particles Physics
Abstract

The Cryogenic Dark Matter Search low ionization threshold experiment (CDMSlite) searches for interactions between dark matter particles and germanium nuclei in cryogenic detectors. The experiment has achieved a low energy threshold with improved sensitivity to low-mass (

Published
2019

2. Search for low-mass dark matter with CDMSlite using a profile likelihood fit

Author

Agnese, R, Aralis, T, Aramaki, T, Arnquist, IJ, Azadbakht, E, Baker, W, Banik, S, Barker, D, Bauer, DA, Binder, T, Bowles, MA, Brink, PL, Bunker, R, Cabrera, B, Calkins, R, Cameron, RA, Cartaro, C, Cerdeño, DG, Chang, YY, Cooley, J, Cornell, B, Cushman, P, De Brienne, F, Doughty, T, Fascione, E, Figueroa-Feliciano, E, Fink, CW, Fritts, M, Gerbier, G, Germond, R, Ghaith, M, Golwala, SR, Harris, HR, Herbert, N, Hong, Z, Hoppe, EW, Hsu, L, Huber, ME, Iyer, V, Jardin, D, Jastram, A, Jena, C, Kelsey, MH, Kennedy, A, Kubik, A, Kurinsky, NA, Lawrence, RE, Loer, B, Lopez Asamar, E, Lukens, P, Macdonell, D, Mahapatra, R, Mandic, V, Mast, N, Miller, E, Mirabolfathi, N, Mohanty, B, Morales Mendoza, JD, Nelson, J, Neog, H, Orrell, JL, Oser, SM, Page, WA, Partridge, R, Pepin, M, Ponce, F, Poudel, S, Pyle, M, Qiu, H, Rau, W, Reisetter, A, Ren, R, Reynolds, T, Roberts, A, Robinson, AE, Rogers, HE, Saab, T, Sadoulet, B, Sander, J, Scarff, A, Schnee, RW, Scorza, S, Senapati, K, Serfass, B, Speller, D, Stanford, C, Stein, M, Street, J, Tanaka, HA, Toback, D, Underwood, R, Villano, AN, Von Krosigk, B, Watkins, SL, Wilson, JS, Wilson, MJ, Winchell, J, Wright, DH, Yellin, S, and Young, BA

Subjects
astro-ph.CO, physics.ins-det
Abstract

The Cryogenic Dark Matter Search low ionization threshold experiment (CDMSlite) searches for interactions between dark matter particles and germanium nuclei in cryogenic detectors. The experiment has achieved a low energy threshold with improved sensitivity to low-mass (

Published
2019

3. First Dark Matter Constraints from a SuperCDMS Single-Charge Sensitive Detector

Author

Agnese, R, Aralis, T, Aramaki, T, Arnquist, IJ, Azadbakht, E, Baker, W, Banik, S, Barker, D, Bauer, DA, Binder, T, Bowles, MA, Brink, PL, Bunker, R, Cabrera, B, Calkins, R, Cartaro, C, Cerdeño, DG, Chang, Y-Y, Cooley, J, Cornell, B, Cushman, P, Di Stefano, PCF, Doughty, T, Fascione, E, Figueroa-Feliciano, E, Fink, C, Fritts, M, Gerbier, G, Germond, R, Ghaith, M, Golwala, SR, Harris, HR, Hong, Z, Hoppe, EW, Hsu, L, Huber, ME, Iyer, V, Jardin, D, Jena, C, Kelsey, MH, Kennedy, A, Kubik, A, Kurinsky, NA, Lawrence, RE, Leyva, JV, Loer, B, Asamar, E Lopez, Lukens, P, MacDonell, D, Mahapatra, R, Mandic, V, Mast, N, Miller, EH, Mirabolfathi, N, Mohanty, B, Mendoza, JD Morales, Nelson, J, Orrell, JL, Oser, SM, Page, WA, Partridge, R, Pepin, M, Phipps, A, Ponce, F, Poudel, S, Pyle, M, Qiu, H, Rau, W, Reisetter, A, Reynolds, T, Roberts, A, Robinson, AE, Rogers, HE, Romani, RK, Saab, T, Sadoulet, B, Sander, J, Scarff, A, Schnee, RW, Scorza, S, Senapati, K, Serfass, B, So, J, Speller, D, Stanford, C, Stein, M, Street, J, Tanaka, HA, Toback, D, Underwood, R, Villano, AN, von Krosigk, B, Watkins, SL, Wilson, JS, Wilson, MJ, Winchell, J, Wright, DH, Yellin, S, Young, BA, and Zhang, X

Subjects
Nuclear and Plasma Physics, Particle and High Energy Physics, Physical Sciences, hep-ex, astro-ph.CO, physics.ins-det, Mathematical Sciences, Engineering, General Physics, Mathematical sciences, Physical sciences
Abstract

We present the first limits on inelastic electron-scattering dark matter and dark photon absorption using a prototype SuperCDMS detector having a charge resolution of 0.1 electron-hole pairs (CDMS HVeV, a 0.93 g CDMS high-voltage device). These electron-recoil limits significantly improve experimental constraints on dark matter particles with masses as low as 1  MeV/c^{2}. We demonstrate a sensitivity to dark photons competitive with other leading approaches but using substantially less exposure (0.49 g d). These results demonstrate the scientific potential of phonon-mediated semiconductor detectors that are sensitive to single electronic excitations.

Published
2018

4. First Dark Matter Constraints from a SuperCDMS Single-Charge Sensitive Detector.

Author

Agnese, R, Aralis, T, Aramaki, T, Arnquist, IJ, Azadbakht, E, Baker, W, Banik, S, Barker, D, Bauer, DA, Binder, T, Bowles, MA, Brink, PL, Bunker, R, Cabrera, B, Calkins, R, Cartaro, C, Cerdeño, DG, Chang, Y-Y, Cooley, J, Cornell, B, Cushman, P, Di Stefano, PCF, Doughty, T, Fascione, E, Figueroa-Feliciano, E, Fink, C, Fritts, M, Gerbier, G, Germond, R, Ghaith, M, Golwala, SR, Harris, HR, Hong, Z, Hoppe, EW, Hsu, L, Huber, ME, Iyer, V, Jardin, D, Jena, C, Kelsey, MH, Kennedy, A, Kubik, A, Kurinsky, NA, Lawrence, RE, Leyva, JV, Loer, B, Lopez Asamar, E, Lukens, P, MacDonell, D, Mahapatra, R, Mandic, V, Mast, N, Miller, EH, Mirabolfathi, N, Mohanty, B, Morales Mendoza, JD, Nelson, J, Orrell, JL, Oser, SM, Page, WA, Partridge, R, Pepin, M, Phipps, A, Ponce, F, Poudel, S, Pyle, M, Qiu, H, Rau, W, Reisetter, A, Reynolds, T, Roberts, A, Robinson, AE, Rogers, HE, Romani, RK, Saab, T, Sadoulet, B, Sander, J, Scarff, A, Schnee, RW, Scorza, S, Senapati, K, Serfass, B, So, J, Speller, D, Stanford, C, Stein, M, Street, J, Tanaka, HA, Toback, D, Underwood, R, Villano, AN, von Krosigk, B, Watkins, SL, Wilson, JS, Wilson, MJ, Winchell, J, Wright, DH, Yellin, S, Young, BA, and Zhang, X

Subjects
hep-ex, astro-ph.CO, physics.ins-det, General Physics, Physical Sciences
Abstract

We present the first limits on inelastic electron-scattering dark matter and dark photon absorption using a prototype SuperCDMS detector having a charge resolution of 0.1 electron-hole pairs (CDMS HVeV, a 0.93 g CDMS high-voltage device). These electron-recoil limits significantly improve experimental constraints on dark matter particles with masses as low as 1  MeV/c^{2}. We demonstrate a sensitivity to dark photons competitive with other leading approaches but using substantially less exposure (0.49 g d). These results demonstrate the scientific potential of phonon-mediated semiconductor detectors that are sensitive to single electronic excitations.

Published
2018

5. Low-mass dark matter search with CDMSlite

Author

Agnese, R, Anderson, AJ, Aralis, T, Aramaki, T, Arnquist, IJ, Baker, W, Balakishiyeva, D, Barker, D, Basu Thakur, R, Bauer, DA, Binder, T, Bowles, MA, Brink, PL, Bunker, R, Cabrera, B, Caldwell, DO, Calkins, R, Cartaro, C, Cerdeño, DG, Chang, Y, Chagani, H, Chen, Y, Cooley, J, Cornell, B, Cushman, P, Daal, M, Di Stefano, PCF, Doughty, T, Esteban, L, Fascione, E, Figueroa-Feliciano, E, Fritts, M, Gerbier, G, Ghaith, M, Godfrey, GL, Golwala, SR, Hall, J, Harris, HR, Hong, Z, Hoppe, EW, Hsu, L, Huber, ME, Iyer, V, Jardin, D, Jastram, A, Jena, C, Kelsey, MH, Kennedy, A, Kubik, A, Kurinsky, NA, Leder, A, Loer, B, Lopez Asamar, E, Lukens, P, Macdonell, D, Mahapatra, R, Mandic, V, Mast, N, Miller, EH, Mirabolfathi, N, Moffatt, RA, Mohanty, B, Morales Mendoza, JD, Nelson, J, Orrell, JL, Oser, SM, Page, K, Page, WA, Partridge, R, Pepin, M, Peñalver Martinez, M, Phipps, A, Poudel, S, Pyle, M, Qiu, H, Rau, W, Redl, P, Reisetter, A, Reynolds, T, Roberts, A, Robinson, AE, Rogers, HE, Saab, T, Sadoulet, B, Sander, J, Schneck, K, Schnee, RW, Scorza, S, Senapati, K, Serfass, B, Speller, D, Stein, M, Street, J, Tanaka, HA, Toback, D, Underwood, R, Villano, AN, Von Krosigk, B, Welliver, B, and Wilson, JS

Subjects
astro-ph.CO, astro-ph.IM, hep-ex, physics.ins-det
Abstract

The SuperCDMS experiment is designed to directly detect weakly interacting massive particles (WIMPs) that may constitute the dark matter in our Galaxy. During its operation at the Soudan Underground Laboratory, germanium detectors were run in the CDMSlite mode to gather data sets with sensitivity specifically for WIMPs with masses

Published
2018

6. Low-mass dark matter search with CDMSlite

Author

Agnese, R, Anderson, AJ, Aralis, T, Aramaki, T, Arnquist, IJ, Baker, W, Balakishiyeva, D, Barker, D, Thakur, R Basu, Bauer, DA, Binder, T, Bowles, MA, Brink, PL, Bunker, R, Cabrera, B, Caldwell, DO, Calkins, R, Cartaro, C, Cerdeño, DG, Chang, Y, Chagani, H, Chen, Y, Cooley, J, Cornell, B, Cushman, P, Daal, M, Di Stefano, PCF, Doughty, T, Esteban, L, Fascione, E, Figueroa-Feliciano, E, Fritts, M, Gerbier, G, Ghaith, M, Godfrey, GL, Golwala, SR, Hall, J, Harris, HR, Hong, Z, Hoppe, EW, Hsu, L, Huber, ME, Iyer, V, Jardin, D, Jastram, A, Jena, C, Kelsey, MH, Kennedy, A, Kubik, A, Kurinsky, NA, Leder, A, Loer, B, Asamar, E Lopez, Lukens, P, MacDonell, D, Mahapatra, R, Mandic, V, Mast, N, Miller, EH, Mirabolfathi, N, Moffatt, RA, Mohanty, B, Mendoza, JD Morales, Nelson, J, Orrell, JL, Oser, SM, Page, K, Page, WA, Partridge, R, Pepin, M, Martinez, M Peñalver, Phipps, A, Poudel, S, Pyle, M, Qiu, H, Rau, W, Redl, P, Reisetter, A, Reynolds, T, Roberts, A, Robinson, AE, Rogers, HE, Saab, T, Sadoulet, B, Sander, J, Schneck, K, Schnee, RW, Scorza, S, Senapati, K, Serfass, B, Speller, D, Stein, M, Street, J, Tanaka, HA, Toback, D, Underwood, R, Villano, AN, von Krosigk, B, Welliver, B, and Wilson, JS

Subjects
Nuclear and Plasma Physics, Particle and High Energy Physics, Physical Sciences, astro-ph.CO, astro-ph.IM, hep-ex, physics.ins-det, Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Nuclear & Particles Physics, Mathematical physics, Astronomical sciences, Particle and high energy physics
Abstract

The SuperCDMS experiment is designed to directly detect weakly interacting massive particles (WIMPs) that may constitute the dark matter in our Galaxy. During its operation at the Soudan Underground Laboratory, germanium detectors were run in the CDMSlite mode to gather data sets with sensitivity specifically for WIMPs with masses

Published
2018

7. Projected sensitivity of the SuperCDMS SNOLAB experiment

Author

Agnese, R, Anderson, AJ, Aramaki, T, Arnquist, I, Baker, W, Barker, D, Thakur, R Basu, Bauer, DA, Borgland, A, Bowles, MA, Brink, PL, Bunker, R, Cabrera, B, Caldwell, DO, Calkins, R, Cartaro, C, Cerdeño, DG, Chagani, H, Chen, Y, Cooley, J, Cornell, B, Cushman, P, Daal, M, Di Stefano, PCF, Doughty, T, Esteban, L, Fallows, S, Figueroa-Feliciano, E, Fritts, M, Gerbier, G, Ghaith, M, Godfrey, GL, Golwala, SR, Hall, J, Harris, HR, Hofer, T, Holmgren, D, Hong, Z, Hoppe, E, Hsu, L, Huber, ME, Iyer, V, Jardin, D, Jastram, A, Kelsey, MH, Kennedy, A, Kubik, A, Kurinsky, NA, Leder, A, Loer, B, Asamar, E Lopez, Lukens, P, Mahapatra, R, Mandic, V, Mast, N, Mirabolfathi, N, Moffatt, RA, Mendoza, JD Morales, Orrell, JL, Oser, SM, Page, K, Page, WA, Partridge, R, Pepin, M, Phipps, A, Poudel, S, Pyle, M, Qiu, H, Rau, W, Redl, P, Reisetter, A, Roberts, A, Robinson, AE, Rogers, HE, Saab, T, Sadoulet, B, Sander, J, Schneck, K, Schnee, RW, Serfass, B, Speller, D, Stein, M, Street, J, Tanaka, HA, Toback, D, Underwood, R, Villano, AN, von Krosigk, B, Welliver, B, Wilson, JS, Wright, DH, Yellin, S, Yen, JJ, Young, BA, Zhang, X, and Zhao, X

Subjects
Nuclear and Plasma Physics, Particle and High Energy Physics, Physical Sciences, physics.ins-det, astro-ph.CO, hep-ex, Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Nuclear & Particles Physics, Mathematical physics, Astronomical sciences, Particle and high energy physics
Abstract

SuperCDMS SNOLAB will be a next-generation experiment aimed at directly detecting low-mass particles (with masses ≤10 GeV/c2) that may constitute dark matter by using cryogenic detectors of two types (HV and iZIP) and two target materials (germanium and silicon). The experiment is being designed with an initial sensitivity to nuclear recoil cross sections ∼1×10-43 cm2 for a dark matter particle mass of 1 GeV/c2, and with capacity to continue exploration to both smaller masses and better sensitivities. The phonon sensitivity of the HV detectors will be sufficient to detect nuclear recoils from sub-GeV dark matter. A detailed calibration of the detector response to low-energy recoils will be needed to optimize running conditions of the HV detectors and to interpret their data for dark matter searches. Low-activity shielding, and the depth of SNOLAB, will reduce most backgrounds, but cosmogenically produced H3 and naturally occurring Si32 will be present in the detectors at some level. Even if these backgrounds are 10 times higher than expected, the science reach of the HV detectors would be over 3 orders of magnitude beyond current results for a dark matter mass of 1 GeV/c2. The iZIP detectors are relatively insensitive to variations in detector response and backgrounds, and will provide better sensitivity for dark matter particles with masses 5 GeV/c2. The mix of detector types (HV and iZIP), and targets (germanium and silicon), planned for the experiment, as well as flexibility in how the detectors are operated, will allow us to maximize the low-mass reach, and understand the backgrounds that the experiment will encounter. Upgrades to the experiment, perhaps with a variety of ultra-low-background cryogenic detectors, will extend dark matter sensitivity down to the "neutrino floor," where coherent scatters of solar neutrinos become a limiting background.

Published
2017

8. Projected sensitivity of the SuperCDMS SNOLAB experiment

Author

Agnese, R, Anderson, AJ, Aramaki, T, Arnquist, I, Baker, W, Barker, D, Basu Thakur, R, Bauer, DA, Borgland, A, Bowles, MA, Brink, PL, Bunker, R, Cabrera, B, Caldwell, DO, Calkins, R, Cartaro, C, Cerdeño, DG, Chagani, H, Chen, Y, Cooley, J, Cornell, B, Cushman, P, Daal, M, Di Stefano, PCF, Doughty, T, Esteban, L, Fallows, S, Figueroa-Feliciano, E, Fritts, M, Gerbier, G, Ghaith, M, Godfrey, GL, Golwala, SR, Hall, J, Harris, HR, Hofer, T, Holmgren, D, Hong, Z, Hoppe, E, Hsu, L, Huber, ME, Iyer, V, Jardin, D, Jastram, A, Kelsey, MH, Kennedy, A, Kubik, A, Kurinsky, NA, Leder, A, Loer, B, Lopez Asamar, E, Lukens, P, Mahapatra, R, Mandic, V, Mast, N, Mirabolfathi, N, Moffatt, RA, Morales Mendoza, JD, Orrell, JL, Oser, SM, Page, K, Page, WA, Partridge, R, Pepin, M, Phipps, A, Poudel, S, Pyle, M, Qiu, H, Rau, W, Redl, P, Reisetter, A, Roberts, A, Robinson, AE, Rogers, HE, Saab, T, Sadoulet, B, Sander, J, Schneck, K, Schnee, RW, Serfass, B, Speller, D, Stein, M, Street, J, Tanaka, HA, Toback, D, Underwood, R, Villano, AN, Von Krosigk, B, Welliver, B, Wilson, JS, Wright, DH, Yellin, S, Yen, JJ, Young, BA, Zhang, X, and Zhao, X

Subjects
physics.ins-det, astro-ph.CO, hep-ex
Abstract

SuperCDMS SNOLAB will be a next-generation experiment aimed at directly detecting low-mass particles (with masses ≤10 GeV/c2) that may constitute dark matter by using cryogenic detectors of two types (HV and iZIP) and two target materials (germanium and silicon). The experiment is being designed with an initial sensitivity to nuclear recoil cross sections ∼1×10-43 cm2 for a dark matter particle mass of 1 GeV/c2, and with capacity to continue exploration to both smaller masses and better sensitivities. The phonon sensitivity of the HV detectors will be sufficient to detect nuclear recoils from sub-GeV dark matter. A detailed calibration of the detector response to low-energy recoils will be needed to optimize running conditions of the HV detectors and to interpret their data for dark matter searches. Low-activity shielding, and the depth of SNOLAB, will reduce most backgrounds, but cosmogenically produced H3 and naturally occurring Si32 will be present in the detectors at some level. Even if these backgrounds are 10 times higher than expected, the science reach of the HV detectors would be over 3 orders of magnitude beyond current results for a dark matter mass of 1 GeV/c2. The iZIP detectors are relatively insensitive to variations in detector response and backgrounds, and will provide better sensitivity for dark matter particles with masses 5 GeV/c2. The mix of detector types (HV and iZIP), and targets (germanium and silicon), planned for the experiment, as well as flexibility in how the detectors are operated, will allow us to maximize the low-mass reach, and understand the backgrounds that the experiment will encounter. Upgrades to the experiment, perhaps with a variety of ultra-low-background cryogenic detectors, will extend dark matter sensitivity down to the "neutrino floor," where coherent scatters of solar neutrinos become a limiting background.

Published
2017

9. New Results from the Search for Low-Mass Weakly Interacting Massive Particles with the CDMS Low Ionization Threshold Experiment

Author

Agnese, R, Anderson, AJ, Aramaki, T, Asai, M, Baker, W, Balakishiyeva, D, Barker, D, Thakur, R Basu, Bauer, DA, Billard, J, Borgland, A, Bowles, MA, Brink, PL, Bunker, R, Cabrera, B, Caldwell, DO, Calkins, R, Cerdeno, DG, Chagani, H, Chen, Y, Cooley, J, Cornell, B, Cushman, P, Daal, M, Di Stefano, PCF, Doughty, T, Esteban, L, Fallows, S, Figueroa-Feliciano, E, Ghaith, M, Godfrey, GL, Golwala, SR, Hall, J, Harris, HR, Hofer, T, Holmgren, D, Hsu, L, Huber, ME, Jardin, D, Jastram, A, Kamaev, O, Kara, B, Kelsey, MH, Kennedy, A, Leder, A, Loer, B, Asamar, E Lopez, Lukens, P, Mahapatra, R, Mandic, V, Mast, N, Mirabolfathi, N, Moffatt, RA, Mendoza, JD Morales, Oser, SM, Page, K, Page, WA, Partridge, R, Pepin, M, Phipps, A, Prasad, K, Pyle, M, Qiu, H, Rau, W, Redl, P, Reisetter, A, Ricci, Y, Roberts, A, Rogers, HE, Saab, T, Sadoulet, B, Sander, J, Schneck, K, Schnee, RW, Scorza, S, Serfass, B, Shank, B, Speller, D, Toback, D, Underwood, R, Upadhyayula, S, Villano, AN, Welliver, B, Wilson, JS, Wright, DH, Yellin, S, Yen, JJ, Young, BA, and Zhang, J

Subjects
SuperCDMS Collaboration, astro-ph.CO, astro-ph.IM, hep-ex, physics.ins-det, Mathematical Sciences, Physical Sciences, Engineering, General Physics
Abstract

The CDMS low ionization threshold experiment (CDMSlite) uses cryogenic germanium detectors operated at a relatively high bias voltage to amplify the phonon signal in the search for weakly interacting massive particles (WIMPs). Results are presented from the second CDMSlite run with an exposure of 70 kg day, which reached an energy threshold for electron recoils as low as 56 eV. A fiducialization cut reduces backgrounds below those previously reported by CDMSlite. New parameter space for the WIMP-nucleon spin-independent cross section is excluded for WIMP masses between 1.6 and 5.5  GeV/c^{2}.

Published
2016

10. New Results from the Search for Low-Mass Weakly Interacting Massive Particles with the CDMS Low Ionization Threshold Experiment.

Author

Agnese, R, Anderson, AJ, Aramaki, T, Asai, M, Baker, W, Balakishiyeva, D, Barker, D, Basu Thakur, R, Bauer, DA, Billard, J, Borgland, A, Bowles, MA, Brink, PL, Bunker, R, Cabrera, B, Caldwell, DO, Calkins, R, Cerdeno, DG, Chagani, H, Chen, Y, Cooley, J, Cornell, B, Cushman, P, Daal, M, Di Stefano, PCF, Doughty, T, Esteban, L, Fallows, S, Figueroa-Feliciano, E, Ghaith, M, Godfrey, GL, Golwala, SR, Hall, J, Harris, HR, Hofer, T, Holmgren, D, Hsu, L, Huber, ME, Jardin, D, Jastram, A, Kamaev, O, Kara, B, Kelsey, MH, Kennedy, A, Leder, A, Loer, B, Lopez Asamar, E, Lukens, P, Mahapatra, R, Mandic, V, Mast, N, Mirabolfathi, N, Moffatt, RA, Morales Mendoza, JD, Oser, SM, Page, K, Page, WA, Partridge, R, Pepin, M, Phipps, A, Prasad, K, Pyle, M, Qiu, H, Rau, W, Redl, P, Reisetter, A, Ricci, Y, Roberts, A, Rogers, HE, Saab, T, Sadoulet, B, Sander, J, Schneck, K, Schnee, RW, Scorza, S, Serfass, B, Shank, B, Speller, D, Toback, D, Underwood, R, Upadhyayula, S, Villano, AN, Welliver, B, Wilson, JS, Wright, DH, Yellin, S, Yen, JJ, Young, BA, Zhang, J, and SuperCDMS Collaboration

Subjects
SuperCDMS Collaboration, astro-ph.CO, astro-ph.IM, hep-ex, physics.ins-det, General Physics, Mathematical Sciences, Physical Sciences, Engineering
Abstract

The CDMS low ionization threshold experiment (CDMSlite) uses cryogenic germanium detectors operated at a relatively high bias voltage to amplify the phonon signal in the search for weakly interacting massive particles (WIMPs). Results are presented from the second CDMSlite run with an exposure of 70 kg day, which reached an energy threshold for electron recoils as low as 56 eV. A fiducialization cut reduces backgrounds below those previously reported by CDMSlite. New parameter space for the WIMP-nucleon spin-independent cross section is excluded for WIMP masses between 1.6 and 5.5  GeV/c^{2}.

Published
2016

11. Improved WIMP-search reach of the CDMS II germanium data

Author

Agnese, R, Anderson, AJ, Asai, M, Balakishiyeva, D, Barker, D, Basu Thakur, R, Bauer, DA, Billard, J, Borgland, A, Bowles, MA, Brandt, D, Brink, PL, Bunker, R, Cabrera, B, Caldwell, DO, Calkins, R, Cerdeño, DG, Chagani, H, Chen, Y, Cooley, J, Cornell, B, Crewdson, CH, Cushman, P, Daal, M, Di Stefano, PCF, Doughty, T, Esteban, L, Fallows, S, Figueroa-Feliciano, E, Godfrey, GL, Golwala, SR, Hall, J, Harris, HR, Hertel, SA, Hofer, T, Holmgren, D, Hsu, L, Huber, ME, Jardin, D, Jastram, A, Kamaev, O, Kara, B, Kelsey, MH, Kennedy, A, Kiveni, M, Koch, K, Leder, A, Loer, B, Lopez Asamar, E, Lukens, P, Mahapatra, R, Mandic, V, McCarthy, KA, Mirabolfathi, N, Moffatt, RA, Oser, SM, Page, K, Page, WA, Partridge, R, Pepin, M, Phipps, A, Prasad, K, Pyle, M, Qiu, H, Rau, W, Redl, P, Reisetter, A, Ricci, Y, Rogers, HE, Saab, T, Sadoulet, B, Sander, J, Schneck, K, Schnee, RW, Scorza, S, Serfass, B, Shank, B, Speller, D, Toback, D, Upadhyayula, S, Villano, AN, Welliver, B, Wilson, JS, Wright, DH, Yang, X, Yellin, S, Yen, JJ, Young, BA, and Zhang, J

Subjects
hep-ex, astro-ph.CO, Nuclear & Particles Physics, Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Atomic, Molecular, Nuclear, Particle and Plasma Physics
Abstract

CDMS II data from the five-tower runs at the Soudan Underground Laboratory were reprocessed with an improved charge-pulse fitting algorithm. Two new analysis techniques to reject surface-event backgrounds were applied to the 612 kg days germanium-detector weakly interacting massive particle (WIMP)-search exposure. An extended analysis was also completed by decreasing the 10 keV analysis threshold to ∼5keV, to increase sensitivity near a WIMP mass of 8GeV/c2. After unblinding, there were zero candidate events above a deposited energy of 10 keV and six events in the lower-threshold analysis. This yielded minimum WIMP-nucleon spin-independent scattering cross-section limits of 1.8×10-44 and 1.18×10-41 at 90% confidence for 60 and 8.6GeV/c2 WIMPs, respectively. This improves the previous CDMS II result by a factor of 2.4 (2.7) for 60 (8.6)GeV/c2 WIMPs.

Published
2015

12. Improved WIMP-search reach of the CDMS II germanium data

Author

Agnese, R, Anderson, AJ, Asai, M, Balakishiyeva, D, Barker, D, Thakur, R Basu, Bauer, DA, Billard, J, Borgland, A, Bowles, MA, Brandt, D, Brink, PL, Bunker, R, Cabrera, B, Caldwell, DO, Calkins, R, Cerdeño, DG, Chagani, H, Chen, Y, Cooley, J, Cornell, B, Crewdson, CH, Cushman, P, Daal, M, Di Stefano, PCF, Doughty, T, Esteban, L, Fallows, S, Figueroa-Feliciano, E, Godfrey, GL, Golwala, SR, Hall, J, Harris, HR, Hertel, SA, Hofer, T, Holmgren, D, Hsu, L, Huber, ME, Jardin, D, Jastram, A, Kamaev, O, Kara, B, Kelsey, MH, Kennedy, A, Kiveni, M, Koch, K, Leder, A, Loer, B, Asamar, E Lopez, Lukens, P, Mahapatra, R, Mandic, V, McCarthy, KA, Mirabolfathi, N, Moffatt, RA, Oser, SM, Page, K, Page, WA, Partridge, R, Pepin, M, Phipps, A, Prasad, K, Pyle, M, Qiu, H, Rau, W, Redl, P, Reisetter, A, Ricci, Y, Rogers, HE, Saab, T, Sadoulet, B, Sander, J, Schneck, K, Schnee, RW, Scorza, S, Serfass, B, Shank, B, Speller, D, Toback, D, Upadhyayula, S, Villano, AN, Welliver, B, Wilson, JS, Wright, DH, Yang, X, Yellin, S, Yen, JJ, Young, BA, and Zhang, J

Subjects
hep-ex, astro-ph.CO, Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Nuclear & Particles Physics
Abstract

CDMS II data from the five-tower runs at the Soudan Underground Laboratory were reprocessed with an improved charge-pulse fitting algorithm. Two new analysis techniques to reject surface-event backgrounds were applied to the 612 kg days germanium-detector weakly interacting massive particle (WIMP)-search exposure. An extended analysis was also completed by decreasing the 10 keV analysis threshold to ∼5keV, to increase sensitivity near a WIMP mass of 8GeV/c2. After unblinding, there were zero candidate events above a deposited energy of 10 keV and six events in the lower-threshold analysis. This yielded minimum WIMP-nucleon spin-independent scattering cross-section limits of 1.8×10-44 and 1.18×10-41 at 90% confidence for 60 and 8.6GeV/c2 WIMPs, respectively. This improves the previous CDMS II result by a factor of 2.4 (2.7) for 60 (8.6)GeV/c2 WIMPs.

Published
2015

13. Dark matter effective field theory scattering in direct detection experiments

Author

Schneck, K, Cabrera, B, Cerdeño, DG, Mandic, V, Rogers, HE, Agnese, R, Anderson, AJ, Asai, M, Balakishiyeva, D, Barker, D, Basu Thakur, R, Bauer, DA, Billard, J, Borgland, A, Brandt, D, Brink, PL, Bunker, R, Caldwell, DO, Calkins, R, Chagani, H, Chen, Y, Cooley, J, Cornell, B, Crewdson, CH, Cushman, P, Daal, M, Di Stefano, PCF, Doughty, T, Esteban, L, Fallows, S, Figueroa-Feliciano, E, Godfrey, GL, Golwala, SR, Hall, J, Harris, HR, Hofer, T, Holmgren, D, Hsu, L, Huber, ME, Jardin, DM, Jastram, A, Kamaev, O, Kara, B, Kelsey, MH, Kennedy, A, Leder, A, Loer, B, Lopez Asamar, E, Lukens, P, Mahapatra, R, Mccarthy, KA, Mirabolfathi, N, Moffatt, RA, Morales Mendoza, JD, Oser, SM, Page, K, Page, WA, Partridge, R, Pepin, M, Phipps, A, Prasad, K, Pyle, M, Qiu, H, Rau, W, Redl, P, Reisetter, A, Ricci, Y, Roberts, A, Saab, T, Sadoulet, B, Sander, J, Schnee, RW, Scorza, S, Serfass, B, Shank, B, Speller, D, Toback, D, Upadhyayula, S, Villano, AN, Welliver, B, Wilson, JS, Wright, DH, Yang, X, Yellin, S, Yen, JJ, Young, BA, and Zhang, J

Subjects
astro-ph.CO, hep-ex, hep-ph, Nuclear & Particles Physics, Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Atomic, Molecular, Nuclear, Particle and Plasma Physics
Abstract

We examine the consequences of the effective field theory (EFT) of dark matter-nucleon scattering for current and proposed direct detection experiments. Exclusion limits on EFT coupling constants computed using the optimum interval method are presented for SuperCDMS Soudan, CDMS II, and LUX, and the necessity of combining results from multiple experiments in order to determine dark matter parameters is discussed. We demonstrate that spectral differences between the standard dark matter model and a general EFT interaction can produce a bias when calculating exclusion limits and when developing signal models for likelihood and machine learning techniques. We also discuss the implications of the EFT for the next-generation (G2) direct detection experiments and point out regions of complementarity in the EFT parameter space.

Published
2015

14. Dark matter effective field theory scattering in direct detection experiments

Author

Schneck, K, Cabrera, B, Cerdeño, DG, Mandic, V, Rogers, HE, Agnese, R, Anderson, AJ, Asai, M, Balakishiyeva, D, Barker, D, Thakur, R Basu, Bauer, DA, Billard, J, Borgland, A, Brandt, D, Brink, PL, Bunker, R, Caldwell, DO, Calkins, R, Chagani, H, Chen, Y, Cooley, J, Cornell, B, Crewdson, CH, Cushman, P, Daal, M, Di Stefano, PCF, Doughty, T, Esteban, L, Fallows, S, Figueroa-Feliciano, E, Godfrey, GL, Golwala, SR, Hall, J, Harris, HR, Hofer, T, Holmgren, D, Hsu, L, Huber, ME, Jardin, DM, Jastram, A, Kamaev, O, Kara, B, Kelsey, MH, Kennedy, A, Leder, A, Loer, B, Asamar, E Lopez, Lukens, P, Mahapatra, R, McCarthy, KA, Mirabolfathi, N, Moffatt, RA, Mendoza, JD Morales, Oser, SM, Page, K, Page, WA, Partridge, R, Pepin, M, Phipps, A, Prasad, K, Pyle, M, Qiu, H, Rau, W, Redl, P, Reisetter, A, Ricci, Y, Roberts, A, Saab, T, Sadoulet, B, Sander, J, Schnee, RW, Scorza, S, Serfass, B, Shank, B, Speller, D, Toback, D, Upadhyayula, S, Villano, AN, Welliver, B, Wilson, JS, Wright, DH, Yang, X, Yellin, S, Yen, JJ, Young, BA, and Zhang, J

Subjects
astro-ph.CO, hep-ex, hep-ph, Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Nuclear & Particles Physics
Abstract

We examine the consequences of the effective field theory (EFT) of dark matter-nucleon scattering for current and proposed direct detection experiments. Exclusion limits on EFT coupling constants computed using the optimum interval method are presented for SuperCDMS Soudan, CDMS II, and LUX, and the necessity of combining results from multiple experiments in order to determine dark matter parameters is discussed. We demonstrate that spectral differences between the standard dark matter model and a general EFT interaction can produce a bias when calculating exclusion limits and when developing signal models for likelihood and machine learning techniques. We also discuss the implications of the EFT for the next-generation (G2) direct detection experiments and point out regions of complementarity in the EFT parameter space.

Published
2015

15. Maximum likelihood analysis of low energy CDMS II germanium data

Author

Agnese, R, Anderson, AJ, Balakishiyeva, D, Basu Thakur, R, Bauer, DA, Billard, J, Borgland, A, Bowles, MA, Brandt, D, Brink, PL, Bunker, R, Cabrera, B, Caldwell, DO, Cerdeno, DG, Chagani, H, Chen, Y, Cooley, J, Cornell, B, Crewdson, CH, Cushman, P, Daal, M, Di Stefano, PCF, Doughty, T, Esteban, L, Fallows, S, Figueroa-Feliciano, E, Fritts, M, Godfrey, GL, Golwala, SR, Graham, M, Hall, J, Harris, HR, Hertel, SA, Hofer, T, Holmgren, D, Hsu, L, Huber, ME, Jastram, A, Kamaev, O, Kara, B, Kelsey, MH, Kennedy, A, Kiveni, M, Koch, K, Leder, A, Loer, B, Lopez Asamar, E, Mahapatra, R, Mandic, V, Martinez, C, McCarthy, KA, Mirabolfathi, N, Moffatt, RA, Moore, DC, Nelson, RH, Oser, SM, Page, K, Page, WA, Partridge, R, Pepin, M, Phipps, A, Prasad, K, Pyle, M, Qiu, H, Rau, W, Redl, P, Reisetter, A, Ricci, Y, Rogers, HE, Saab, T, Sadoulet, B, Sander, J, Schneck, K, Schnee, RW, Scorza, S, Serfass, B, Shank, B, Speller, D, Upadhyayula, S, Villano, AN, Welliver, B, Wright, DH, Yellin, S, Yen, JJ, Young, BA, and Zhang, J

Subjects
astro-ph.CO, astro-ph.IM, physics.ins-det, Nuclear & Particles Physics, Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Atomic, Molecular, Nuclear, Particle and Plasma Physics
Abstract

We report on the results of a search for a Weakly Interacting Massive Particle (WIMP) signal in low-energy data of the Cryogenic Dark Matter Search experiment using a maximum likelihood analysis. A background model is constructed using geant4 to simulate the surface-event background from Pb210 decay-chain events, while using independent calibration data to model the gamma background. Fitting this background model to the data results in no statistically significant WIMP component. In addition, we perform fits using an analytic ad hoc background model proposed by Collar and Fields, who claimed to find a large excess of signal-like events in our data. We confirm the strong preference for a signal hypothesis in their analysis under these assumptions, but excesses are observed in both single- and multiple-scatter events, which implies the signal is not caused by WIMPs, but rather reflects the inadequacy of their background model.

Published
2015

16. First direct limits on lightly ionizing particles with electric charge less than e/6.

Author

Agnese, R, Anderson, AJ, Balakishiyeva, D, Basu Thakur, R, Bauer, DA, Billard, J, Borgland, A, Bowles, MA, Brandt, D, Brink, PL, Bunker, R, Cabrera, B, Caldwell, DO, Cerdeno, DG, Chagani, H, Chen, Y, Cooley, J, Cornell, B, Crewdson, CH, Cushman, P, Daal, M, Di Stefano, PCF, Doughty, T, Esteban, L, Fallows, S, Figueroa-Feliciano, E, Godfrey, GL, Golwala, SR, Hall, J, Harris, HR, Hertel, SA, Hofer, T, Holmgren, D, Hsu, L, Huber, ME, Jastram, A, Kamaev, O, Kara, B, Kelsey, MH, Kennedy, A, Kiveni, M, Koch, K, Leder, A, Loer, B, Lopez Asamar, E, Mahapatra, R, Mandic, V, Martinez, C, McCarthy, KA, Mirabolfathi, N, Moffatt, RA, Moore, DC, Nelson, H, Nelson, RH, Ogburn, RW, Page, K, Page, WA, Partridge, R, Pepin, M, Phipps, A, Prasad, K, Pyle, M, Qiu, H, Rau, W, Redl, P, Reisetter, A, Ricci, Y, Rogers, HE, Saab, T, Sadoulet, B, Sander, J, Schneck, K, Schnee, RW, Scorza, S, Serfass, B, Shank, B, Speller, D, Upadhyayula, S, Villano, AN, Welliver, B, Wright, DH, Yellin, S, Yen, JJ, Young, BA, Zhang, J, and CDMS Collaboration

Subjects
CDMS Collaboration, hep-ex, astro-ph.CO, astro-ph.HE, physics.ins-det, General Physics, Physical Sciences
Abstract

While the standard model of particle physics does not include free particles with fractional charge, experimental searches have not ruled out their existence. We report results from the Cryogenic Dark Matter Search (CDMS II) experiment that give the first direct-detection limits for cosmogenically produced relativistic particles with electric charge lower than e/6. A search for tracks in the six stacked detectors of each of two of the CDMS II towers finds no candidates, thereby excluding new parameter space for particles with electric charges between e/6 and e/200.

Published
2015

17. Maximum likelihood analysis of low energy CDMS II germanium data

Author

Agnese, R, Anderson, AJ, Balakishiyeva, D, Thakur, R Basu, Bauer, DA, Billard, J, Borgland, A, Bowles, MA, Brandt, D, Brink, PL, Bunker, R, Cabrera, B, Caldwell, DO, Cerdeno, DG, Chagani, H, Chen, Y, Cooley, J, Cornell, B, Crewdson, CH, Cushman, P, Daal, M, Di Stefano, PCF, Doughty, T, Esteban, L, Fallows, S, Figueroa-Feliciano, E, Fritts, M, Godfrey, GL, Golwala, SR, Graham, M, Hall, J, Harris, HR, Hertel, SA, Hofer, T, Holmgren, D, Hsu, L, Huber, ME, Jastram, A, Kamaev, O, Kara, B, Kelsey, MH, Kennedy, A, Kiveni, M, Koch, K, Leder, A, Loer, B, Asamar, E Lopez, Mahapatra, R, Mandic, V, Martinez, C, McCarthy, KA, Mirabolfathi, N, Moffatt, RA, Moore, DC, Nelson, RH, Oser, SM, Page, K, Page, WA, Partridge, R, Pepin, M, Phipps, A, Prasad, K, Pyle, M, Qiu, H, Rau, W, Redl, P, Reisetter, A, Ricci, Y, Rogers, HE, Saab, T, Sadoulet, B, Sander, J, Schneck, K, Schnee, RW, Scorza, S, Serfass, B, Shank, B, Speller, D, Upadhyayula, S, Villano, AN, Welliver, B, Wright, DH, Yellin, S, Yen, JJ, Young, BA, and Zhang, J

Subjects
astro-ph.CO, astro-ph.IM, physics.ins-det, Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Nuclear & Particles Physics
Abstract

We report on the results of a search for a Weakly Interacting Massive Particle (WIMP) signal in low-energy data of the Cryogenic Dark Matter Search experiment using a maximum likelihood analysis. A background model is constructed using geant4 to simulate the surface-event background from Pb210 decay-chain events, while using independent calibration data to model the gamma background. Fitting this background model to the data results in no statistically significant WIMP component. In addition, we perform fits using an analytic ad hoc background model proposed by Collar and Fields, who claimed to find a large excess of signal-like events in our data. We confirm the strong preference for a signal hypothesis in their analysis under these assumptions, but excesses are observed in both single- and multiple-scatter events, which implies the signal is not caused by WIMPs, but rather reflects the inadequacy of their background model.

Published
2015

18. First direct limits on lightly ionizing particles with electric charge less than e/6.

Author

Agnese, R, Anderson, AJ, Balakishiyeva, D, Basu Thakur, R, Bauer, DA, Billard, J, Borgland, A, Bowles, MA, Brandt, D, Brink, PL, Bunker, R, Cabrera, B, Caldwell, DO, Cerdeno, DG, Chagani, H, Chen, Y, Cooley, J, Cornell, B, Crewdson, CH, Cushman, P, Daal, M, Di Stefano, PCF, Doughty, T, Esteban, L, Fallows, S, Figueroa-Feliciano, E, Godfrey, GL, Golwala, SR, Hall, J, Harris, HR, Hertel, SA, Hofer, T, Holmgren, D, Hsu, L, Huber, ME, Jastram, A, Kamaev, O, Kara, B, Kelsey, MH, Kennedy, A, Kiveni, M, Koch, K, Leder, A, Loer, B, Lopez Asamar, E, Mahapatra, R, Mandic, V, Martinez, C, McCarthy, KA, Mirabolfathi, N, Moffatt, RA, Moore, DC, Nelson, H, Nelson, RH, Ogburn, RW, Page, K, Page, WA, Partridge, R, Pepin, M, Phipps, A, Prasad, K, Pyle, M, Qiu, H, Rau, W, Redl, P, Reisetter, A, Ricci, Y, Rogers, HE, Saab, T, Sadoulet, B, Sander, J, Schneck, K, Schnee, RW, Scorza, S, Serfass, B, Shank, B, Speller, D, Upadhyayula, S, Villano, AN, Welliver, B, Wright, DH, Yellin, S, Yen, JJ, Young, BA, Zhang, J, and CDMS Collaboration

Subjects
CDMS Collaboration, hep-ex, astro-ph.CO, astro-ph.HE, physics.ins-det, Mathematical Sciences, Physical Sciences, Engineering, General Physics
Abstract

While the standard model of particle physics does not include free particles with fractional charge, experimental searches have not ruled out their existence. We report results from the Cryogenic Dark Matter Search (CDMS II) experiment that give the first direct-detection limits for cosmogenically produced relativistic particles with electric charge lower than e/6. A search for tracks in the six stacked detectors of each of two of the CDMS II towers finds no candidates, thereby excluding new parameter space for particles with electric charges between e/6 and e/200.

Published
2015

19. Search for Low-Mass Weakly Interacting Massive Particles with SuperCDMS

Author

Agnese, R, Anderson, AJ, Asai, M, Balakishiyeva, D, Thakur, R Basu, Bauer, DA, Beaty, J, Billard, J, Borgland, A, Bowles, MA, Brandt, D, Brink, PL, Bunker, R, Cabrera, B, Caldwell, DO, Cerdeno, DG, Chagani, H, Chen, Y, Cherry, M, Cooley, J, Cornell, B, Crewdson, CH, Cushman, P, Daal, M, DeVaney, D, Di Stefano, PCF, Do Couto E Silva, E, Doughty, T, Esteban, L, Fallows, S, Figueroa-Feliciano, E, Godfrey, GL, Golwala, SR, Hall, J, Hansen, S, Harris, HR, Hertel, SA, Hines, BA, Hofer, T, Holmgren, D, Hsu, L, Huber, ME, Jastram, A, Kamaev, O, Kara, B, Kelsey, MH, Kenany, S, Kennedy, A, Kiveni, M, Koch, K, Leder, A, Loer, B, Asamar, E Lopez, Mahapatra, R, Mandic, V, Martinez, C, McCarthy, KA, Mirabolfathi, N, Moffatt, RA, Nelson, RH, Novak, L, Page, K, Partridge, R, Pepin, M, Phipps, A, Platt, M, Prasad, K, Pyle, M, Qiu, H, Rau, W, Redl, P, Reisetter, A, Resch, RW, Ricci, Y, Ruschman, M, Saab, T, Sadoulet, B, Sander, J, Schmitt, RL, Schneck, K, Schnee, RW, Scorza, S, Seitz, DN, Serfass, B, Shank, B, Speller, D, Tomada, A, Upadhyayula, S, Villano, AN, Welliver, B, Wright, DH, Yellin, S, Yen, JJ, Young, BA, and Zhang, J

Subjects
(SuperCDMS Collaboration), hep-ex, astro-ph.CO, physics.ins-det, Mathematical Sciences, Physical Sciences, Engineering, General Physics
Abstract

We report a first search for weakly interacting massive particles (WIMPs) using the background rejection capabilities of SuperCDMS. An exposure of 577 kg days was analyzed for WIMPs with mass

Published
2014

20. Search for low-mass weakly interacting massive particles with SuperCDMS.

Author

Agnese, R, Anderson, AJ, Asai, M, Balakishiyeva, D, Basu Thakur, R, Bauer, DA, Beaty, J, Billard, J, Borgland, A, Bowles, MA, Brandt, D, Brink, PL, Bunker, R, Cabrera, B, Caldwell, DO, Cerdeno, DG, Chagani, H, Chen, Y, Cherry, M, Cooley, J, Cornell, B, Crewdson, CH, Cushman, P, Daal, M, DeVaney, D, Di Stefano, PCF, Silva, E Do Couto E, Doughty, T, Esteban, L, Fallows, S, Figueroa-Feliciano, E, Godfrey, GL, Golwala, SR, Hall, J, Hansen, S, Harris, HR, Hertel, SA, Hines, BA, Hofer, T, Holmgren, D, Hsu, L, Huber, ME, Jastram, A, Kamaev, O, Kara, B, Kelsey, MH, Kenany, S, Kennedy, A, Kiveni, M, Koch, K, Leder, A, Loer, B, Lopez Asamar, E, Mahapatra, R, Mandic, V, Martinez, C, McCarthy, KA, Mirabolfathi, N, Moffatt, RA, Nelson, RH, Novak, L, Page, K, Partridge, R, Pepin, M, Phipps, A, Platt, M, Prasad, K, Pyle, M, Qiu, H, Rau, W, Redl, P, Reisetter, A, Resch, RW, Ricci, Y, Ruschman, M, Saab, T, Sadoulet, B, Sander, J, Schmitt, RL, Schneck, K, Schnee, RW, Scorza, S, Seitz, DN, Serfass, B, Shank, B, Speller, D, Tomada, A, Upadhyayula, S, Villano, AN, Welliver, B, Wright, DH, Yellin, S, Yen, JJ, Young, BA, Zhang, J, and (SuperCDMS Collaboration)

Subjects
(SuperCDMS Collaboration), hep-ex, astro-ph.CO, physics.ins-det, General Physics, Physical Sciences
Abstract

We report a first search for weakly interacting massive particles (WIMPs) using the background rejection capabilities of SuperCDMS. An exposure of 577 kg days was analyzed for WIMPs with mass

Published
2014

21. Search for Low-Mass Weakly Interacting Massive Particles Using Voltage-Assisted Calorimetric Ionization Detection in the SuperCDMS Experiment

Author

Agnese, R, Anderson, AJ, Asai, M, Balakishiyeva, D, Thakur, R Basu, Bauer, DA, Billard, J, Borgland, A, Bowles, MA, Brandt, D, Brink, PL, Bunker, R, Cabrera, B, Caldwell, DO, Cerdeno, DG, Chagani, H, Cooley, J, Cornell, B, Crewdson, CH, Cushman, P, Daal, M, Di Stefano, PCF, Doughty, T, Esteban, L, Fallows, S, Figueroa-Feliciano, E, Godfrey, GL, Golwala, SR, Hall, J, Harris, HR, Hertel, SA, Hofer, T, Holmgren, D, Hsu, L, Huber, ME, Jastram, A, Kamaev, O, Kara, B, Kelsey, MH, Kennedy, A, Kiveni, M, Koch, K, Loer, B, Asamar, E Lopez, Mahapatra, R, Mandic, V, Martinez, C, McCarthy, KA, Mirabolfathi, N, Moffatt, RA, Moore, DC, Nadeau, P, Nelson, RH, Page, K, Partridge, R, Pepin, M, Phipps, A, Prasad, K, Pyle, M, Qiu, H, Rau, W, Redl, P, Reisetter, A, Ricci, Y, Saab, T, Sadoulet, B, Sander, J, Schneck, K, Schnee, RW, Scorza, S, Serfass, B, Shank, B, Speller, D, Villano, AN, Welliver, B, Wright, DH, Yellin, S, Yen, JJ, Young, BA, and Zhang, J

Subjects
(SuperCDMS collaboration), physics.ins-det, astro-ph.CO, astro-ph.IM, hep-ex, Mathematical Sciences, Physical Sciences, Engineering, General Physics
Abstract

SuperCDMS is an experiment designed to directly detect weakly interacting massive particles (WIMPs), a favored candidate for dark matter ubiquitous in the Universe. In this Letter, we present WIMP-search results using a calorimetric technique we call CDMSlite, which relies on voltage-assisted Luke-Neganov amplification of the ionization energy deposited by particle interactions. The data were collected with a single 0.6 kg germanium detector running for ten live days at the Soudan Underground Laboratory. A low energy threshold of 170  eVee (electron equivalent) was obtained, which allows us to constrain new WIMP-nucleon spin-independent parameter space for WIMP masses below 6  GeV/c2.

Published
2014

22. Search for low-mass weakly interacting massive particles using voltage-assisted calorimetric ionization detection in the SuperCDMS experiment.

Author

Agnese, R, Anderson, AJ, Asai, M, Balakishiyeva, D, Basu Thakur, R, Bauer, DA, Billard, J, Borgland, A, Bowles, MA, Brandt, D, Brink, PL, Bunker, R, Cabrera, B, Caldwell, DO, Cerdeno, DG, Chagani, H, Cooley, J, Cornell, B, Crewdson, CH, Cushman, P, Daal, M, Di Stefano, PCF, Doughty, T, Esteban, L, Fallows, S, Figueroa-Feliciano, E, Godfrey, GL, Golwala, SR, Hall, J, Harris, HR, Hertel, SA, Hofer, T, Holmgren, D, Hsu, L, Huber, ME, Jastram, A, Kamaev, O, Kara, B, Kelsey, MH, Kennedy, A, Kiveni, M, Koch, K, Loer, B, Lopez Asamar, E, Mahapatra, R, Mandic, V, Martinez, C, McCarthy, KA, Mirabolfathi, N, Moffatt, RA, Moore, DC, Nadeau, P, Nelson, RH, Page, K, Partridge, R, Pepin, M, Phipps, A, Prasad, K, Pyle, M, Qiu, H, Rau, W, Redl, P, Reisetter, A, Ricci, Y, Saab, T, Sadoulet, B, Sander, J, Schneck, K, Schnee, RW, Scorza, S, Serfass, B, Shank, B, Speller, D, Villano, AN, Welliver, B, Wright, DH, Yellin, S, Yen, JJ, Young, BA, Zhang, J, and (SuperCDMS collaboration)

Subjects
(SuperCDMS collaboration), physics.ins-det, astro-ph.CO, astro-ph.IM, hep-ex, General Physics, Physical Sciences
Abstract

SuperCDMS is an experiment designed to directly detect weakly interacting massive particles (WIMPs), a favored candidate for dark matter ubiquitous in the Universe. In this Letter, we present WIMP-search results using a calorimetric technique we call CDMSlite, which relies on voltage-assisted Luke-Neganov amplification of the ionization energy deposited by particle interactions. The data were collected with a single 0.6 kg germanium detector running for ten live days at the Soudan Underground Laboratory. A low energy threshold of 170  eVee (electron equivalent) was obtained, which allows us to constrain new WIMP-nucleon spin-independent parameter space for WIMP masses below 6  GeV/c2.

Published
2014

23. Silicon Detector Dark Matter Results from the Final Exposure of CDMS II

Author

Agnese, R, Ahmed, Z, Anderson, AJ, Arrenberg, S, Balakishiyeva, D, Thakur, R Basu, Bauer, DA, Billard, J, Borgland, A, Brandt, D, Brink, PL, Bruch, T, Bunker, R, Cabrera, B, Caldwell, DO, Cerdeno, DG, Chagani, H, Cooley, J, Cornell, B, Crewdson, CH, Cushman, P, Daal, M, Dejongh, F, do Couto e Silva, E, Doughty, T, Esteban, L, Fallows, S, Figueroa-Feliciano, E, Filippini, J, Fox, J, Fritts, M, Godfrey, GL, Golwala, SR, Hall, J, Harris, RH, Hertel, SA, Hofer, T, Holmgren, D, Hsu, L, Huber, ME, Jastram, A, Kamaev, O, Kara, B, Kelsey, MH, Kennedy, A, Kim, P, Kiveni, M, Koch, K, Kos, M, Leman, SW, Loer, B, Asamar, E Lopez, Mahapatra, R, Mandic, V, Martinez, C, McCarthy, KA, Mirabolfathi, N, Moffatt, RA, Moore, DC, Nadeau, P, Nelson, RH, Page, K, Partridge, R, Pepin, M, Phipps, A, Prasad, K, Pyle, M, Qiu, H, Rau, W, Redl, P, Reisetter, A, Ricci, Y, Saab, T, Sadoulet, B, Sander, J, Schneck, K, Schnee, RW, Scorza, S, Serfass, B, Shank, B, Speller, D, Sundqvist, KM, Villano, AN, Welliver, B, Wright, DH, Yellin, S, Yen, JJ, Yoo, J, Young, BA, and Zhang, J

Subjects
CDMS Collaboration, hep-ex, astro-ph.CO, astro-ph.IM, physics.ins-det, Mathematical Sciences, Physical Sciences, Engineering, General Physics
Abstract

We report results of a search for weakly interacting massive particles (WIMPS) with the silicon detectors of the CDMS II experiment. This blind analysis of 140.2 kg day of data taken between July 2007 and September 2008 revealed three WIMP-candidate events with a surface-event background estimate of 0.41(-0.08)(+0.20)(stat)(-0.24)(+0.28)(syst). Other known backgrounds from neutrons and 206Pb are limited to

Published
2013

24. Silicon detector dark matter results from the final exposure of CDMS II.

Author

Agnese, R, Ahmed, Z, Anderson, AJ, Arrenberg, S, Balakishiyeva, D, Basu Thakur, R, Bauer, DA, Billard, J, Borgland, A, Brandt, D, Brink, PL, Bruch, T, Bunker, R, Cabrera, B, Caldwell, DO, Cerdeno, DG, Chagani, H, Cooley, J, Cornell, B, Crewdson, CH, Cushman, P, Daal, M, Dejongh, F, do Couto e Silva, E, Doughty, T, Esteban, L, Fallows, S, Figueroa-Feliciano, E, Filippini, J, Fox, J, Fritts, M, Godfrey, GL, Golwala, SR, Hall, J, Harris, RH, Hertel, SA, Hofer, T, Holmgren, D, Hsu, L, Huber, ME, Jastram, A, Kamaev, O, Kara, B, Kelsey, MH, Kennedy, A, Kim, P, Kiveni, M, Koch, K, Kos, M, Leman, SW, Loer, B, Lopez Asamar, E, Mahapatra, R, Mandic, V, Martinez, C, McCarthy, KA, Mirabolfathi, N, Moffatt, RA, Moore, DC, Nadeau, P, Nelson, RH, Page, K, Partridge, R, Pepin, M, Phipps, A, Prasad, K, Pyle, M, Qiu, H, Rau, W, Redl, P, Reisetter, A, Ricci, Y, Saab, T, Sadoulet, B, Sander, J, Schneck, K, Schnee, RW, Scorza, S, Serfass, B, Shank, B, Speller, D, Sundqvist, KM, Villano, AN, Welliver, B, Wright, DH, Yellin, S, Yen, JJ, Yoo, J, Young, BA, Zhang, J, and CDMS Collaboration

Subjects
CDMS Collaboration, hep-ex, astro-ph.CO, astro-ph.IM, physics.ins-det, General Physics, Physical Sciences
Abstract

We report results of a search for weakly interacting massive particles (WIMPS) with the silicon detectors of the CDMS II experiment. This blind analysis of 140.2 kg day of data taken between July 2007 and September 2008 revealed three WIMP-candidate events with a surface-event background estimate of 0.41(-0.08)(+0.20)(stat)(-0.24)(+0.28)(syst). Other known backgrounds from neutrons and 206Pb are limited to

Published
2013

25. Silicon detector results from the first five-tower run of CDMS II

Author

Agnese, R, Ahmed, Z, Anderson, AJ, Arrenberg, S, Balakishiyeva, D, Basu Thakur, R, Bauer, DA, Borgland, A, Brandt, D, Brink, PL, Bruch, T, Bunker, R, Cabrera, B, Caldwell, DO, Cerdeno, DG, Chagani, H, Cooley, J, Cornell, B, Crewdson, CH, Cushman, P, Daal, M, Dejongh, F, Di Stefano, PCF, Do Couto E Silva, E, Doughty, T, Esteban, L, Fallows, S, Figueroa-Feliciano, E, Filippini, J, Fox, J, Fritts, M, Godfrey, GL, Golwala, SR, Hall, J, Harris, RH, Hertel, SA, Hofer, T, Holmgren, D, Hsu, L, Huber, ME, Jastram, A, Kamaev, O, Kara, B, Kelsey, MH, Kennedy, A, Kim, P, Kiveni, M, Koch, K, Kos, M, Leman, SW, Lopez-Asamar, E, Mahapatra, R, Mandic, V, Martinez, C, McCarthy, KA, Mirabolfathi, N, Moffatt, RA, Moore, DC, Nadeau, P, Nelson, RH, Page, K, Partridge, R, Pepin, M, Phipps, A, Prasad, K, Pyle, M, Qiu, H, Rau, W, Redl, P, Reisetter, A, Ricci, Y, Saab, T, Sadoulet, B, Sander, J, Schneck, K, Schnee, RW, Scorza, S, Serfass, B, Shank, B, Speller, D, Sundqvist, KM, Villano, AN, Welliver, B, Wright, DH, Yellin, S, Yen, JJ, Yoo, J, Young, BA, and Zhang, J

Subjects
astro-ph.CO, hep-ex, Nuclear & Particles Physics, Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Atomic, Molecular, Nuclear, Particle and Plasma Physics
Abstract

We report results of a search for weakly interacting massive particles (WIMPs) with the Si detectors of the CDMS II experiment. This report describes a blind analysis of the first data taken with CDMS II's full complement of detectors in 2006-2007; results from this exposure using the Ge detectors have already been presented. We observed no candidate WIMP-scattering events in an exposure of 55.9 kg-days before analysis cuts, with an expected background of ∼1.1 events. The exposure of this analysis is equivalent to 10.3 kg-days over a recoil energy range of 7-100 keV for an ideal Si detector and a WIMP mass of 10 GeV/c2. These data set an upper limit of 1.7×10-41 cm2 on the WIMP-nucleon spin-independent cross section of a 10 GeV/c2 WIMP. These data exclude parameter space for spin-independent WIMP-nucleon elastic scattering that is relevant to recent searches for low-mass WIMPs. © 2013 American Physical Society.

Published
2013

26. Silicon detector results from the first five-tower run of CDMS II

Author

Agnese, R, Ahmed, Z, Anderson, AJ, Arrenberg, S, Balakishiyeva, D, Thakur, R Basu, Bauer, DA, Borgland, A, Brandt, D, Brink, PL, Bruch, T, Bunker, R, Cabrera, B, Caldwell, DO, Cerdeno, DG, Chagani, H, Cooley, J, Cornell, B, Crewdson, CH, Cushman, P, Daal, M, Dejongh, F, Di Stefano, PCF, do Couto e Silva, E, Doughty, T, Esteban, L, Fallows, S, Figueroa-Feliciano, E, Filippini, J, Fox, J, Fritts, M, Godfrey, GL, Golwala, SR, Hall, J, Harris, RH, Hertel, SA, Hofer, T, Holmgren, D, Hsu, L, Huber, ME, Jastram, A, Kamaev, O, Kara, B, Kelsey, MH, Kennedy, A, Kim, P, Kiveni, M, Koch, K, Kos, M, Leman, SW, Lopez-Asamar, E, Mahapatra, R, Mandic, V, Martinez, C, McCarthy, KA, Mirabolfathi, N, Moffatt, RA, Moore, DC, Nadeau, P, Nelson, RH, Page, K, Partridge, R, Pepin, M, Phipps, A, Prasad, K, Pyle, M, Qiu, H, Rau, W, Redl, P, Reisetter, A, Ricci, Y, Saab, T, Sadoulet, B, Sander, J, Schneck, K, Schnee, RW, Scorza, S, Serfass, B, Shank, B, Speller, D, Sundqvist, KM, Villano, AN, Welliver, B, Wright, DH, Yellin, S, Yen, JJ, Yoo, J, Young, BA, and Zhang, J

Subjects
astro-ph.CO, hep-ex, Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Nuclear & Particles Physics
Abstract

We report results of a search for weakly interacting massive particles (WIMPs) with the Si detectors of the CDMS II experiment. This report describes a blind analysis of the first data taken with CDMS II's full complement of detectors in 2006-2007; results from this exposure using the Ge detectors have already been presented. We observed no candidate WIMP-scattering events in an exposure of 55.9 kg-days before analysis cuts, with an expected background of ∼1.1 events. The exposure of this analysis is equivalent to 10.3 kg-days over a recoil energy range of 7-100 keV for an ideal Si detector and a WIMP mass of 10 GeV/c2. These data set an upper limit of 1.7×10-41 cm2 on the WIMP-nucleon spin-independent cross section of a 10 GeV/c2 WIMP. These data exclude parameter space for spin-independent WIMP-nucleon elastic scattering that is relevant to recent searches for low-mass WIMPs. © 2013 American Physical Society.

Published
2013

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