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1. Search for low-mass dark matter via bremsstrahlung radiation and the Migdal effect in SuperCDMS

Author

Albakry, M. F., Alkhatib, I., Alonso-González, D., Amaral, D. W. P., Aralis, T., Aramaki, T., Arnquist, I. J., Ataee Langroudy, I., Azadbakht, E., Banik, S., Bathurst, C., Bhattacharyya, R., Brink, P. L., Bunker, R., Cabrera, B., Calkins, R., Cameron, R. A., Cartaro, C., Cerdeño, D. G., Chang, Y.Y., Chaudhuri, M., Chen, R., Chott, N., Cooley, J., Coombes, H., Corbett, J., Cushman, P., Das, S., De Brienne, F., Rios, M., Dharani, S., di Vacri, M. L., Diamond, M. D., Elwan, M., Fascione, E., Figueroa-Feliciano, E., Fink, C. W., Fouts, K., Fritts, M., Gerbier, G., Germond, R., Ghaith, M., Golwala, S. R., Hall, J., Hassan, N., Hines, B. A., Hong, Z., Hoppe, E. W., Hsu, L., Huber, M. E., Iyer, V., Jardin, D., Kashyap, V. K. S., Kelsey, M. H., Kubik, A., Kurinsky, N. A., Lee, M., Li, A., Litke, M., Liu, J., Liu, Y., Loer, B., Lopez Asamar, E., Lukens, P., MacFarlane, D. B., Mahapatra, R., Mammo, J. S., Mast, N., Mayer, A. J., Meyer zu Theenhausen, H., Michaud, É., Michielin, E., Mirabolfathi, N., Mohanty, B., Nelson, J., Neog, H., Novati, V., Orrell, J. L., Osborne, M. D., Oser, S. M., Page, W. A., Pandey, L., Pandey, S., Partridge, R., Pedreros, D. S., Perna, L., Podviianiuk, R., Ponce, F., Poudel, S., Pradeep, A., Pyle, M., Rau, W., Reid, E., Ren, R., Reynolds, T., Roberts, A., Robinson, A. E., Saab, T., Sadek, D., Sadoulet, B., Saikia, I., Sander, J., Sattari, A., Schmidt, B., Schnee, R. W., Scorza, S., Serfass, B., Poudel, S. S., Sincavage, D. J., Sinervo, P., Street, J., Sun, H., Terry, G. D., Thasrawala, F. K., Toback, D., Underwood, R., Verma, S., Villano, A. N., von Krosigk, B., Watkins, S. L., Wen, O., Williams, Z., Wilson, M. J., Winchell, J., Wu, C.P., Wykoff, K., Yellin, S., Young, B. A., Yu, T. C., Zatschler, B., Zatschler, S., Zaytsev, A., Zhang, E., Zheng, L., and Zuniga, A.

Abstract

We present a new analysis of previously published SuperCDMS data using a profile likelihood framework to search for sub-GeV dark matter (DM) particles through two inelastic scattering channels: bremsstrahlung radiation and the Migdal effect. By considering these possible inelastic scattering channels, experimental sensitivity can be extended to DM masses that are undetectable through the DM-nucleon elastic scattering channel, given the energy threshold of current experiments. We exclude DM masses down to 220 MeV/c2 at 2.7×10−30 cm2 via the bremsstrahlung channel. The Migdal channel search provides overall considerably more stringent limits and excludes DM masses down to 30 MeV/c2 at 5.0×10−30 cm2.

Published
2023

2. First measurement of the nuclear-recoil ionization yield in silicon at 100 eV

Author

Albakry, M. F., Alkhatib, I., Alonso, D., Amaral, D. W. P., An, P., Aralis, T., Aramaki, T., Arnquist, I. J., Langroudy, I. Ataee, Azadbakht, E., Banik, S., Barbeau, P. S., Bathurst, C., Bhattacharyya, R., Brink, P. L., Bunker, R., Cabrera, B., Calkins, R., Cameron, R. A., Cartaro, C., Cerdeño, D. G., Chang, Y. -Y., Chaudhuri, M., Chen, R., Chott, N., Cooley, J., Coombes, H., Corbett, J., Cushman, P., Das, S., De Brienne, F., Rios, M., Dharani, S., di Vacri, M. L., Diamond, M. D., Elwan, M., Fascione, E., Figueroa-Feliciano, E., Fink, C. W., Fouts, K., Fritts, M., Gerbier, G., Germond, R., Ghaith, M., Golwala, S. R., Hall, J., Hassan, N., Hedges, S. C., Hines, B. A., Hong, Z., Hoppe, E. W., Hsu, L., Huber, M. E., Iyer, V., Kashyap, V. K. S., Kelsey, M. H., Kubik, A., Kurinsky, N. A., Lee, M., Li, A., Li, L., Litke, M., Liu, J., Liu, Y., Loer, B., Asamar, E. Lopez, Lukens, P., MacFarlane, D. B., Mahapatra, R., Mandic, V., Mast, N., Mayer, A. J., Theenhausen, H. Meyer zu, Michaud, ., Michielin, E., Mirabolfathi, N., Mohanty, B., Nebolsky, B., Nelson, J., Neog, H., Novati, V., Orrell, J. L., Osborne, M. D., Oser, S. M., Page, W. A., Pandey, S., Partridge, R., Pedreros, D. S., Perna, L., Podviianiuk, R., Ponce, F., Poudel, S., Pradeep, A., Pyle, M., Rau, W., Reid, E., Ren, R., Reynolds, T., Roberts, A., Robinson, A. E., Runge, J., Saab, T., Sadek, D., Sadoulet, B., Saikia, I., Sander, J., Sattari, A., Schmidt, B., Schnee, R. W., Scorza, S., Serfass, B., Poudel, S. S., Sincavage, D. J., Sinervo, P., Speaks, Z., Street, J., Sun, H., Thasrawala, F. K., Toback, D., Underwood, R., Verma, S., Villano, A. N., von Krosigk, B., Watkins, S. L., Wen, O., Williams, Z., Wilson, M. J., Winchell, J., Wykoff, K., Yellin, S., Young, B. A., Yu, T. C., Zatschler, B., Zatschler, S., Zaytsev, A., Zeolla, A., Zhang, E., Zheng, L., Zheng, Y., and Zuniga, A.

Subjects
High Energy Physics - Experiment (hep-ex), Physics - Instrumentation and Detectors, FOS: Physical sciences, Instrumentation and Detectors (physics.ins-det), Nuclear Experiment (nucl-ex), Astrophysics - Instrumentation and Methods for Astrophysics, Instrumentation and Methods for Astrophysics (astro-ph.IM), Nuclear Experiment, High Energy Physics - Experiment
Abstract

We measured the nuclear--recoil ionization yield in silicon with a cryogenic phonon-sensitive gram-scale detector. Neutrons from a mono-energetic beam scatter off of the silicon nuclei at angles corresponding to energy depositions from 4\,keV down to 100\,eV, the lowest energy probed so far. The results show no sign of an ionization production threshold above 100\,eV. These results call for further investigation of the ionization yield theory and a comprehensive determination of the detector response function at energies below the keV scale.

Published
2023

3. A Search for Low-mass Dark Matter via Bremsstrahlung Radiation and the Migdal Effect in SuperCDMS

Author

Albakry, M. F., Alkhatib, I., Alonso, D., Amaral, D. W. P., Aralis, T., Aramaki, T., Arnquist, I. J., Langroudy, I. Ataee, Azadbakht, E., Banik, S., Bathurst, C., Bhattacharyya, R., Brink, P. L., Bunker, R., Cabrera, B., Calkins, R., Cameron, R. A., Cartaro, C., Cerdeño, D. G., Chang, Y. -Y., Chaudhuri, M., Chen, R., Chott, N., Cooley, J., Coombes, H., Corbett, J., Cushman, P., Das, S., De Brienne, F., Rios, M., Dharani, S., di Vacri, M. L., Diamond, M. D., Elwan, M., Fascione, E., Figueroa-Feliciano, E., Fink, C. W., Fouts, K., Fritts, M., Gerbier, G., Germond, R., Ghaith, M., Golwala, S. R., Hall, J., Hassan, N., Hines, B. A., Hong, Z., Hoppe, E. W., Hsu, L., Huber, M. E., Iyer, V., Jardin, D., Kashyap, V. K. S., Kelsey, M. H., Kubik, A., Kurinsky, N. A., Lee, M., Li, A., Litke, M., Liu, J., Liu, Y., Loer, B., Asamar, E. Lopez, Lukens, P., MacFarlane, D. B., Mahapatra, R., Mast, N., Mayer, A. J., Theenhausen, H. Meyer zu, Michaud, É., Michielin, E., Mirabolfathi, N., Mohanty, B., Nelson, J., Neog, H., Novati, V., Orrell, J. L., Osborne, M. D., Oser, S. M., Page, W. A., Pandey, S., Partridge, R., Pedreros, D. S., Perna, L., Podviianiuk, R., Ponce, F., Poudel, S., Pradeep, A., Pyle, M., Rau, W., Reid, E., Ren, R., Reynolds, T., Roberts, A., Robinson, A. E., Saab, T., Sadek, D., Sadoulet, B., Saikia, I., Sander, J., Sattari, A., Schmidt, B., Schnee, R. W., Scorza, S., Serfass, B., Poudel, S. S., Sincavage, D. J., Sinervo, P., Street, J., Sun, H., Terry, G. D., Thasrawala, F. K., Toback, D., Underwood, R., Verma, S., Villano, A. N., von Krosigk, B., Watkins, S. L., Wen, O., Williams, Z., Wilson, M. J., Winchell, J., Wu, C. -P., Wykoff, K., Yellin, S., Young, B. A., Yu, T. C., Zatschler, B., Zatschler, S., Zaytsev, A., Zhang, E., Zheng, L., and Zuniga, A.

Subjects
High Energy Physics - Experiment (hep-ex), High Energy Physics - Phenomenology, High Energy Physics - Phenomenology (hep-ph), FOS: Physical sciences, High Energy Physics - Experiment
Abstract

We present a new analysis of previously published of SuperCDMS data using a profile likelihood framework to search for sub-GeV dark matter (DM) particles through two inelastic scattering channels: bremsstrahlung radiation and the Migdal effect. By considering these possible inelastic scattering channels, experimental sensitivity can be extended to DM masses that are undetectable through the DM-nucleon elastic scattering channel, given the energy threshold of current experiments. We exclude DM masses down to $220~\textrm{MeV}/c^2$ at $2.7 \times 10^{-30}~\textrm{cm}^2$ via the bremsstrahlung channel. The Migdal channel search provides overall considerably more stringent limits and excludes DM masses down to $30~\textrm{MeV}/c^2$ at $5.0 \times 10^{-30}~\textrm{cm}^2$., Submitted to PRD

Published
2023

4. Search for low-mass dark matter via bremsstrahlung radiation and the Migdal effect in SuperCDMS

Author

SuperCDMS Collaboration, Albakry, M. F., Alkhatib, I., Alonso-González, D., Amaral, D. W. P., Aralis, T., Aramaki, T., Arnquist, I. J., Ataee Langroudy, I., Azadbakht, E., Banik, S., Bathurst, C., Bhattacharyya, R., Brink, P. L., Bunker, R., Cabrera, B., Calkins, R., Cameron, R. A., Cartaro, C., Cerdeño, D. G., Chang, Y.-Y., Chaudhuri, M., Chen, R., Chott, N., Cooley, J., Coombes, H., Corbett, J., Cushman, P., Das, S., De Brienne, F., Rios, M., Dharani, S., Di Vacri, M. L., Diamond, M. D., Elwan, M., Fascione, E., Figueroa-Feliciano, E., Fink, C. W., Fouts, K., Fritts, M., Gerbier, G., Germond, R., Ghaith, M., Golwala, S. R., Hall, J., Hassan, N., Hines, B. A., Hong, Z., Hoppe, E. W., Hsu, L., Huber, M. E., Iyer, V., Jardin, D., Kashyap, V. K. S., Kelsey, M. H., Kubik, A., Kurinsky, N. A., Lee, M., Li, A., Litke, M., Liu, J., Liu, Y., Loer, B., Lopez Asamar, E., Lukens, P., MacFarlane, D. B., Mahapatra, R., Mammo, J. S., Mast, N., Mayer, A. J., Meyer Zu Theenhausen, H., Michaud, É., Michielin, E., Mirabolfathi, N., Mohanty, B., Nelson, J., Neog, H., Novati, V., Orrell, J. L., Osborne, M. D., Oser, S. M., Page, W. A., Pandey, L., Pandey, S., Partridge, R., Pedreros, D. S., Perna, L., Podviianiuk, R., Ponce, F., Poudel, S., Pradeep, A., Pyle, M., Rau, W., Reid, E., Ren, R., Reynolds, T., Roberts, A., Robinson, A. E., Saab, T., Sadek, D., Sadoulet, B., Saikia, I., Sander, J., Sattari, A., Schmidt, B., Schnee, R. W., Scorza, S., Serfass, B., Poudel, S. S., Sincavage, D. J., Sinervo, P., Street, J., Sun, H., Terry, G. D., Thasrawala, F. K., Toback, D., Underwood, R., Verma, S., Villano, A. N., Von Krosigk, B., Watkins, S. L., Wen, O., Williams, Z., Wilson, M. J., Winchell, J., Wu, C.-P., Wykoff, K., Yellin, S., Young, B. A., Yu, T. C., Zatschler, B., Zatschler, S., Zaytsev, A., Zhang, E., Zheng, L., and Zuniga, A.

Subjects
Physics, ddc:530
Abstract

We present a new analysis of previously published SuperCDMS data using a profile likelihood framework to search for sub-GeV dark matter (DM) particles through two inelastic scattering channels: bremsstrahlung radiation and the Migdal effect. By considering these possible inelastic scattering channels, experimental sensitivity can be extended to DM masses that are undetectable through the DM-nucleon elastic scattering channel, given the energy threshold of current experiments. We exclude DM masses down to 220 MeV/c2 at 2.7×10−30 cm2 via the bremsstrahlung channel. The Migdal channel search provides overall considerably more stringent limits and excludes DM masses down to 30 MeV/c2 at 5.0×10−30 cm2.

Published
2023

5. Investigating the sources of low-energy events in a SuperCDMS-HVeV detector

Author

SuperCDMS Collaboration, Albakry, M. F., Alkhatib, I., Amaral, D. W. P., Aralis, T., Aramaki, T., Arnquist, I. J., Langroudy, I. Ataee, Azadbakht, E., Banik, S., Bathurst, C., Bauer, D. A., Bhattacharyya, R., Brink, P. L., Bunker, R., Cabrera, B., Calkins, R., Cameron, R. A., Cartaro, C., Cerdeño, D. G., Chang, Y. -Y., Chaudhuri, M., Chen, R., Chott, N., Cooley, J., Coombes, H., Corbett, J., Cushman, P., De Brienne, F., Dharani, S., di Vacri, M. L., Diamond, M. D., Fascione, E., Figueroa-Feliciano, E., Fink, C. W., Fouts, K., Fritts, M., Gerbier, G., Germond, R., Ghaith, M., Golwala, S. R., Hall, J., Hassan, N., Hines, B. A., Hollister, M. I., Hong, Z., Hoppe, E. W., Hsu, L., Huber, M. E., Iyer, V., Jastram, A., Kashyap, V. K. S., Kelsey, M. H., Kubik, A., Kurinsky, N. A., Lawrence, R. E., Lee, M., Li, A., Liu, J., Liu, Y., Loer, B., Asamar, E. Lopez, Lukens, P., MacFarlane, D. B., Mahapatra, R., Mandic, V., Mast, N., Mayer, A. J., Theenhausen, H. Meyer zu, Michaud, É., Michielin, E., Mirabolfathi, N., Mohanty, B., Nagorny, S., Nelson, J., Neog, H., Novati, V., Orrell, J. L., Osborne, M. D., Oser, S. M., Page, W. A., Partridge, R., Pedreros, D. S., Podviianiuk, R., Ponce, F., Poudel, S., Pradeep, A., Pyle, M., Rau, W., Reid, E., Ren, R., Reynolds, T., Roberts, A., Robinson, A. E., Saab, T., Sadoulet, B., Saikia, I., Sander, J., Sattari, A., Schmidt, B., Schnee, R. W., Scorza, S., Serfass, B., Poudel, S. S., Sincavage, D. J., Stanford, C., Street, J., Sun, H., Thasrawala, F. K., Toback, D., Underwood, R., Verma, S., Villano, A. N., von Krosigk, B., Watkins, S. L., Wen, O., Williams, Z., Wilson, M. J., Winchell, J., Wykoff, K., Yellin, S., Young, B. A., Yu, T. C., Zatschler, B., Zatschler, S., Zaytsev, A., Zhang, E., Zheng, L., and Zuber, S.

Subjects
High Energy Physics - Experiment (hep-ex), Cosmology and Nongalactic Astrophysics (astro-ph.CO), Physics - Instrumentation and Detectors, Physics, FOS: Physical sciences, ddc:530, Instrumentation and Detectors (physics.ins-det), High Energy Physics - Experiment, Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract

Recent experiments searching for sub−GeV/c2 dark matter have observed event excesses close to their respective energy thresholds. Although specific to the individual technologies, the measured excess event rates have been consistently reported at or below event energies of a few-hundred eV, or with charges of a few electron-hole pairs. In the present work, we operated a 1-g silicon SuperCDMS-HVeV detector at three voltages across the crystal (0, 60 and 100 V). The 0 V data show an excess of events in the tens of eV region. Despite this event excess, we demonstrate the ability to set a competitive exclusion limit on the spin-independent dark matter–nucleon elastic scattering cross section for dark matter masses of O(100) MeV/c2, enabled by operation of the detector at 0 V potential and achievement of a very low O(10) eV threshold for nuclear recoils. Comparing the data acquired at 0, 60 and 100 V potentials across the crystal, we investigated possible sources of the unexpected events observed at low energy. The data indicate that the dominant contribution to the excess is consistent with a hypothesized luminescence from the printed circuit boards used in the detector holder.

Published
2022

6. Effective Field Theory Analysis of CDMSlite Run 2 Data

Author

SuperCDMS Collaboration, Albakry, M. F., Alkhatib, I., Amaral, D. W. P., Aralis, T., Aramaki, T., Arnquist, I. J., Langroudy, I. Ataee, Azadbakht, E., Banik, S., Bathurst, C., Bauer, D. A., Bezerra, L. V. S., Bhattacharyya, R., Brink, P. L., Bunker, R., Cabrera, B., Calkins, R., Cameron, R. A., Cartaro, C., Cerdeño, D. G., Chang, Y. -Y., Chaudhuri, M., Chen, R., Chott, N., Cooley, J., Coombes, H., Corbett, J., Cushman, P., De Brienne, F., Dharani, S., di Vacri, M. L., Diamond, M. D., Fascione, E., Figueroa-Feliciano, E., Fink, C. W., Fouts, K., Fritts, M., Gerbier, G., Germond, R., Ghaith, M., Golwala, S. R., Hall, J., Hassan, N., Hines, B. A., Hollister, M. I., Hong, Z., Hoppe, E. W., Hsu, L., Huber, M. E., Iyer, V., Jastram, A., Kashyap, V. K. S., Kelsey, M. H., Kubik, A., Kurinsky, N. A., Lawrence, R. E., Lee, M., Li, A., Liu, J., Liu, Y., Loer, B., Lukens, P., MacFarlane, D. B., Mahapatra, R., Mandic, V., Mast, N., Mayer, A. J., Theenhausen, H. Meyer zu, Michaud, É., Michielin, E., Mirabolfathi, N., Mohanty, B., Nagorny, S., Nelson, J., Neog, H., Novati, V., Orrell, J. L., Osborne, M. D., Oser, S. M., Page, W. A., Partridge, R., Pedreros, D. S., Podviianiuk, R., Ponce, F., Poudel, S., Pradeep, A., Pyle, M., Rau, W., Reid, E., Ren, R., Reynolds, T., Roberts, A., Robinson, A. E., Rogers, H. E., Saab, T., Sadoulet, B., Saikia, I., Sander, J., Sattari, A., Schmidt, B., Schnee, R. W., Scorza, S., Serfass, B., Poudel, S. S., Sincavage, D. J., Stanford, C., Street, J., Sun, H., Thasrawala, F. K., Toback, D., Underwood, R., Verma, S., Villano, A. N., von Krosigk, B., Watkins, S. L., Wen, O., Williams, Z., Wilson, M. J., Winchell, J., Wykoff, K., Yellin, S., Young, B. A., Yu, T. C., Zatschler, B., Zatschler, S., Zaytsev, A., Zhang, E., Zheng, L., and Zuber, S.

Subjects
High Energy Physics - Experiment (hep-ex), Cosmology and Nongalactic Astrophysics (astro-ph.CO), FOS: Physical sciences, Astrophysics - Cosmology and Nongalactic Astrophysics, High Energy Physics - Experiment
Abstract

CDMSlite Run 2 was a search for weakly interacting massive particles (WIMPs) with a cryogenic 600 g Ge detector operated in a high-voltage mode to optimize sensitivity to WIMPs of relatively low mass from 2 - 20 GeV/$c^2$. In this article, we present an effective field theory (EFT) analysis of the CDMSlite Run 2 data using an extended energy range and a comprehensive treatment of the expected background. A binned likelihood Bayesian analysis was performed on the recoil energy data, taking into account the parameters of the EFT interactions and optimizing the data selection with respect to the dominant background components. Energy regions within 5$\sigma$ of known activation peaks were removed from the analysis. The Bayesian evidences resulting from the different operator hypotheses show that the CDMSlite Run 2 data are consistent with the background-only models and do not allow for a signal interpretation assuming any additional EFT interaction. Consequently, upper limits on the WIMP mass and coupling-coefficient amplitudes and phases are presented for each EFT operator. These limits improve previous CDMSlite Run 2 bounds for WIMP masses above 5 GeV/$c^2$., Comment: 16 pages, 8 figures

Published
2022

7. A Strategy for Low-Mass Dark Matter Searches with Cryogenic Detectors in the SuperCDMS SNOLAB Facility

Author

SuperCDMS Collaboration, Albakry, M. F., Alkhatib, I., Amaral, D. W. P., Aralis, T., Aramaki, T., Arnquist, I. J., Langroudy, I. Ataee, Azadbakht, E., Banik, S., Bathurst, C., Bauer, D. A., Bhattacharyya, R., Brink, P. L., Bunker, R., Cabrera, B., Calkins, R., Cameron, R. A., Cartaro, C., Cerdeno, D. G., Chang, Y. -Y., Chaudhuri, M., Chen, R., Chott, N., Cooley, J., Coombes, H., Corbett, J., Cushman, P., De Brienne, F., Dharani, S., di Vacri, M. L., Diamond, M. D., Fascione, E., Figueroa-Feliciano, E., Fink, C. W., Fouts, K., Fritts, M., Gerbier, G., Germond, R., Ghaith, M., Golwala, S. R., Hall, J., Hassan, N., Hines, B. A., Hollister, M. I., Hong, Z., Hoppe, E. W., Hsu, L., Huber, M. E., Iyer, V., Jastram, A., Kashyap, V. K. S., Kelsey, M. H., Kubik, A., Kurinsky, N. A., Lawrence, R. E., Lee, M., Li, A., Liu, J., Liu, Y., Loer, B., Lukens, P., MacFarlane, D. B., Mahapatra, R., Mandic, V., Mast, N., Mayer, A. J., Theenhausen, H. Meyer zu, Michaud, E., Michielin, E., Mirabolfathi, N., Mohanty, B., Nagorny, S., Nelson, J., Neog, H., Novati, V., Orrell, J. L., Osborne, M. D., Oser, S. M., Page, W. A., Partridge, R., Pedreros, D. S., Podviianiuk, R., Ponce, F., Poudel, S., Pradeep, A., Pyle, M., Rau, W., Reid, E., Ren, R., Reynolds, T., Roberts, A., Robinson, A. E., Saab, T., Sadoulet, B., Saikia, I., Sander, J., Sattari, A., Schmidt, B., Schnee, R. W., Scorza, S., Serfass, B., Poudel, S. S., Sincavage, D. J., Stanford, C., Street, J., Sun, H., Thasrawala, F. K., Toback, D., Underwood, R., Verma, S., Villano, A. N., von Krosigk, B., Watkins, S. L., Wen, O., Williams, Z., Wilson, M. J., Winchell, J., Wyko, K., Yellin, S., Young, B. A., Yu, T. C., Zatschler, B., Zatschler, S., Zaytsev, A., Zhang, E., Zheng, L., and Zuber, S.

Subjects
High Energy Physics - Experiment (hep-ex), Physics - Instrumentation and Detectors, FOS: Physical sciences, Instrumentation and Detectors (physics.ins-det), Nuclear Experiment (nucl-ex), Astrophysics - Instrumentation and Methods for Astrophysics, Instrumentation and Methods for Astrophysics (astro-ph.IM), Nuclear Experiment, High Energy Physics - Experiment
Abstract

The SuperCDMS Collaboration is currently building SuperCDMS SNOLAB, a dark matter search focused on nucleon-coupled dark matter in the 1-5 GeV/c$^2$ mass range. Looking to the future, the Collaboration has developed a set of experience-based upgrade scenarios, as well as novel directions, to extend the search for dark matter using the SuperCDMS technology in the SNOLAB facility. The experienced-based scenarios are forecasted to probe many square decades of unexplored dark matter parameter space below 5 GeV/c$^2$, covering over 6 decades in mass: 1-100 eV/c$^2$ for dark photons and axion-like particles, 1-100 MeV/c$^2$ for dark-photon-coupled light dark matter, and 0.05-5 GeV/c$^2$ for nucleon-coupled dark matter. They will reach the neutrino fog in the 0.5-5 GeV/c$^2$ mass range and test a variety of benchmark models and sharp targets. The novel directions involve greater departures from current SuperCDMS technology but promise even greater reach in the long run, and their development must begin now for them to be available in a timely fashion. The experienced-based upgrade scenarios rely mainly on dramatic improvements in detector performance based on demonstrated scaling laws and reasonable extrapolations of current performance. Importantly, these improvements in detector performance obviate significant reductions in background levels beyond current expectations for the SuperCDMS SNOLAB experiment. Given that the dominant limiting backgrounds for SuperCDMS SNOLAB are cosmogenically created radioisotopes in the detectors, likely amenable only to isotopic purification and an underground detector life-cycle from before crystal growth to detector testing, the potential cost and time savings are enormous and the necessary improvements much easier to prototype., contribution to Snowmass 2021; v2 updated (assorted corrections and improvements to forecasts) October 2022; v3 updated (corrected SuperCDMS SNOLAB sensitivity curves in upgrade forecast plots in body of text) April 2023

Published
2022

8. Ionization yield measurement in a germanium CDMSlite detector using photo-neutron sources

Author

SuperCDMS Collaboration, Albakry, M. F., Alkhatib, I., Amaral, D. W. P., Aralis, T., Aramaki, T., Arnquist, I. J., Langroudy, I. Ataee, Azadbakht, E., Banik, S., Bathurst, C., Bauer, D. A., Bezerra, L. V. S., Bhattacharyya, R., Bowles, M. A., Brink, P. L., Bunker, R., Cabrera, B., Calkins, R., Cameron, R. A., Cartaro, C., Cerdeño, D. G., Chang, Y. -Y., Chaudhuri, M., Chen, R., Chott, N., Cooley, J., Coombes, H., Corbett, J., Cushman, P., De Brienne, F., di Vacri, M. L., Diamond, M. D., Fascione, E., Figueroa-Feliciano, E., Fink, C. W., Fouts, K., Fritts, M., Gerbier, G., Germond, R., Ghaith, M., Golwala, S. R., Hall, J., Hines, B. A., Hollister, M. I., Hong, Z., Hoppe, E. W., Hsu, L., Huber, M. E., Iyer, V., Jastram, A., Kashyap, V. K. S., Kelsey, M. H., Kubik, A., Kurinsky, N. A., Lawrence, R. E., Lee, M., Li, A., Liu, J., Liu, Y., Loer, B., Lukens, P., MacDonell, D., MacFarlane, D. B., Mahapatra, R., Mandic, V., Mast, N., Mayer, A. J., Theenhausen, H. Meyer zu, Michaud, É., Michielin, E., Mirabolfathi, N., Mohanty, B., Mendoza, J. D. Morales, Nagorny, S., Nelson, J., Neog, H., Novati, V., Orrell, J. L., Osborne, M. D., Oser, S. M., Page, W. A., Partridge, R., Pedreros, D. S., Podviianiuk, R., Ponce, F., Poudel, S., Pradeep, A., Pyle, M., Rau, W., Reid, E., Ren, R., Reynolds, T., Roberts, A., Robinson, A. E., Saab, T., Sadoulet, B., Saikia, I., Sander, J., Sattari, A., Scarff, A., Schmidt, B., Schnee, R. W., Scorza, S., Serfass, B., Sincavage, D. J., Stanford, C., Street, J., Thasrawala, F. K., Toback, D., Underwood, R., Verma, S., Villano, A. N., von Krosigk, B., Watkins, S. L., Wen, O., Williams, Z., Wilson, M. J., Winchell, J., Wykoff, K., Yellin, S., Young, B. A., Yu, T. C., Zatschler, B., Zatschler, S., Zaytsev, A., Zhang, E., Zheng, L., and Zuber, S.

Subjects
Physics - Instrumentation and Detectors, Physics::Instrumentation and Detectors, FOS: Physical sciences, Instrumentation and Detectors (physics.ins-det), Nuclear Experiment
Abstract

Two photo-neutron sources, $^{88}$Y$^{9}$Be and $^{124}$Sb$^{9}$Be, have been used to investigate the ionization yield of nuclear recoils in the CDMSlite germanium detectors by the SuperCDMS collaboration. This work evaluates the yield for nuclear recoil energies between 1 keV and 7 keV at a temperature of $\sim$ 50 mK. We use a Geant4 simulation to model the neutron spectrum assuming a charge yield model that is a generalization of the standard Lindhard model and consists of two energy dependent parameters. We perform a likelihood analysis using the simulated neutron spectrum, modeled background, and experimental data to obtain the best fit values of the yield model. The ionization yield between recoil energies of 1 keV and 7 keV is shown to be significantly lower than predicted by the standard Lindhard model for germanium. There is a general lack of agreement among different experiments using a variety of techniques studying the low-energy range of the nuclear recoil yield, which is most critical for interpretation of direct dark matter searches. This suggests complexity in the physical process that many direct detection experiments use to model their primary signal detection mechanism and highlights the need for further studies to clarify underlying systematic effects that have not been well understood up to this point.

Published
2022

9. Observation of Time-Dependent Internal Charge Amplification in a Planar Germanium Detector at Cryogenic Temperature

Author

Acharya, P., Fritts, M., Mei, D.M., Mandic, V., Wang, C.J., Mahapatra, R., and Platt, M.

Subjects
Condensed Matter - Materials Science, High Energy Physics - Experiment (hep-ex), Physics - Instrumentation and Detectors, Physics and Astronomy (miscellaneous), Materials Science (cond-mat.mtrl-sci), FOS: Physical sciences, Instrumentation and Detectors (physics.ins-det), Nuclear Experiment (nucl-ex), Nuclear Experiment, Engineering (miscellaneous), High Energy Physics - Experiment
Abstract

For the first time, time-dependent internal charge amplification through impact ionization has been observed in a planar germanium (Ge) detector operated at cryogenic temperature. In a time period of 30 and 45 minutes after applying a bias voltage, the charge energy corresponding to a baseline of the 59.54 keV $\gamma$ rays from a $^{241}$Am source is amplified for a short period of time and then decreases back to the baseline. The amplification of charge energy depends strongly on the applied positive bias voltage with drifting holes across the detector. No such phenomenon is visible with drifting electrons across the detector. We find that the observed charge amplification is dictated by the impact ionization of charged states, which has a strong correlation with impurity level and applied electric field. We analyze the dominant physics mechanisms that are responsible for the creation and the impact ionization of charged states. Our analysis suggests that the appropriate level of impurity in a Ge detector can enhance charge yield through the impact ionization of charged states to achieve extremely low-energy detection threshold ($, Comment: 7 pages and 9 figures

Published
2022
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10. Constraints on Lightly Ionizing Particles from CDMSlite

Author

Alkhatib, I, Amaral, DWP, Aralis, T, Aramaki, T, Arnquist, IJ, Ataee Langroudy, I, Azadbakht, E, Banik, S, Barker, D, Bathurst, C, Bauer, DA, Bezerra, LVS, Bhattacharyya, R, Bowles, MA, Brink, PL, Bunker, R, Cabrera, B, Calkins, R, Cameron, RA, Cartaro, C, Cerdeño, DG, Chang, Y-Y, Chaudhuri, M, Chen, R, Chott, N, Cooley, J, Coombes, H, Corbett, J, Cushman, P, De Brienne, F, di Vacri, ML, Diamond, MD, Fascione, E, Figueroa-Feliciano, E, Fink, CW, Fouts, K, Fritts, M, Gerbier, G, Germond, R, Ghaith, M, Golwala, SR, Harris, HR, Hines, BA, Hollister, MI, Hong, Z, Hoppe, EW, Hsu, L, Huber, ME, Iyer, V, Jardin, D, Jastram, A, Kashyap, VKS, Kelsey, MH, Kubik, A, Kurinsky, NA, Lawrence, RE, Li, A, Loer, B, Lopez Asamar, E, Lukens, P, MacFarlane, DB, Mahapatra, R, Mandic, V, Mast, N, Mayer, AJ, Meyer Zu Theenhausen, H, Michaud, ÉM, Michielin, E, Mirabolfathi, N, Mohanty, B, Morales Mendoza, JD, Nagorny, S, Nelson, J, Neog, H, Novati, V, Orrell, JL, Oser, SM, Page, WA, Partridge, R, Podviianiuk, R, Ponce, F, Poudel, S, Pradeep, A, Pyle, M, Rau, W, Reid, E, Ren, R, Reynolds, T, Roberts, A, Robinson, AE, Saab, T, Sadoulet, B, Sander, J, Sattari, A, Schnee, RW, Scorza, S, Serfass, B, Sincavage, DJ, Stanford, C, and Street, J

Subjects
General Physics, Engineering, Physical Sciences, SuperCDMS Collaboration, Mathematical Sciences
Abstract

The Cryogenic Dark Matter Search low ionization threshold experiment (CDMSlite) achieved efficient detection of very small recoil energies in its germanium target, resulting in sensitivity to lightly ionizing particles (LIPs) in a previously unexplored region of charge, mass, and velocity parameter space. We report first direct-detection limits calculated using the optimum interval method on the vertical intensity of cosmogenically produced LIPs with an electric charge smaller than e/(3×10^{5}), as well as the strongest limits for charge ≤e/160, with a minimum vertical intensity of 1.36×10^{-7} cm^{-2} s^{-1} sr^{-1} at charge e/160. These results apply over a wide range of LIP masses (5 MeV/c^{2} to 100 TeV/c^{2}) and cover a wide range of βγ values (0.1-10^{6}), thus excluding nonrelativistic LIPs with βγ as small as 0.1 for the first time.

Published
2021

11. Constraints on Lightly Ionizing Particles from CDMSlite

Author

SuperCDMS Collaboration, Alkhatib, I., Amaral, D. W. P., Aralis, T., Aramaki, T., Arnquist, I. J., Langroudy, I. Ataee, Azadbakht, E., Banik, S., Barker, D., Bathurst, C., Bauer, D. A., Bezerra, L. V. S., Bhattacharyya, R., Bowles, M. A., Brink, P. L., Bunker, R., Cabrera, B., Calkins, R., Cameron, R. A., Cartaro, C., Cerdeño, D. G., Chang, Y. -Y., Chaudhuri, M., Chen, R., Chott, N., Cooley, J., Coombes, H., Corbett, J., Cushman, P., De Brienne, F., di Vacri, M. L., Diamond, M. D., Fascione, E., Figueroa-Feliciano, E., Fink, C. W., Fouts, K., Fritts, M., Gerbier, G., Germond, R., Ghaith, M., Golwala, S. R., Harris, H. R., Hines, B. A., Hollister, M. I., Hong, Z., Hoppe, E. W., Hsu, L., Huber, M. E., Iyer, V., Jardin, D., Jastram, A., Kashyap, V. K. S., Kelsey, M. H., Kubik, A., Kurinsky, N. A., Lawrence, R. E., Li, A., Loer, B., Asamar, E. Lopez, Lukens, P., MacFarlane, D. B., Mahapatra, R., Mandic, V., Mast, N., Mayer, A. J., Theenhausen, H. Meyer zu, Michaud, É. M., Michielin, E., Mirabolfathi, N., Mohanty, B., Mendoza, J. D. Morales, Nagorny, S., Nelson, J., Neog, H., Novati, V., Orrell, J. L., Oser, S. M., Page, W. A., Partridge, R., Podviianiuk, R., Ponce, F., Poudel, S., Pradeep, A., Pyle, M., Rau, W., Reid, E., Ren, R., Reynolds, T., Roberts, A., Robinson, A. E., Saab, T., Sadoulet, B., Sander, J., Sattari, A., Schnee, R. W., Scorza, S., Serfass, B., Sincavage, D. J., Stanford, C., Street, J., Toback, D., Underwood, R., Verma, S., Villano, A. N., von Krosigk, B., Watkins, S. L., Wilson, J. S., Wilson, M. J., Winchell, J., Wright, D. H., Yellin, S., Young, B. A., Yu, T. C., Zhang, E., Zhang, H. G., Zhao, X., Zheng, L., and UAM. Departamento de Física Teórica

Subjects
Cosmology and Nongalactic Astrophysics (astro-ph.CO), Physics - Instrumentation and Detectors, Ionization Thresholds, General Physics and Astronomy, FOS: Physical sciences, Cryogenic Dark Matter Searches, 01 natural sciences, Electric charge, High Energy Physics - Experiment, High Energy Physics - Experiment (hep-ex), Interval Methods, Recoil, High Energy Physics - Phenomenology (hep-ph), Ionization, 0103 physical sciences, Sensitivity (control systems), 010306 general physics, Ionizing Particles, Velocity Parameters, Physics, High Energy Astrophysical Phenomena (astro-ph.HE), Range (particle radiation), 010308 nuclear & particles physics, Física, Charge (physics), Instrumentation and Detectors (physics.ins-det), Recoil Energies, Efficient Detection, High Energy Physics - Phenomenology, Direct Detection, Cover (topology), 13. Climate action, Atomic physics, Astrophysics - High Energy Astrophysical Phenomena, Intensity (heat transfer), Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract

Artículo escrito por un elevado número de autores, solo se referencian el que aparece en primer lugar, el nombre del grupo de colaboración, si le hubiere, y los autores pertenecientes a la UAM, The Cryogenic Dark Matter Search low ionization threshold experiment (CDMSlite) achieved efficient detection of very small recoil energies in its germanium target, resulting in sensitivity to lightly ionizing particles (LIPs) in a previously unexplored region of charge, mass, and velocity parameter space. We report first direct-detection limits calculated using the optimum interval method on the vertical intensity of cosmogenically produced LIPs with an electric charge smaller than e / (3 × 105), as well as the strongest limits for charge ≤ e / 160, with a minimum vertical intensity of 1.36 × 10−7 cm−2 s−1 sr−1 at charge e /160. These results apply over a wide range of LIP masses (5 MeV / c2 to 100 TeV / c2) and cover a wide range of βγ values (0.1–106), thus excluding nonrelativistic LIPs with βγ as small as 0.1 for the first time

Published
2020

12. Constraints on dark photons and axionlike particles from the SuperCDMS Soudan experiment

Author

Aralis, T, Aramaki, T, Arnquist, IJ, Azadbakht, E, Baker, W, Banik, S, Barker, D, Bathurst, C, Bauer, DA, Bezerra, LVS, Bhattacharyya, R, Binder, T, Bowles, MA, Brink, PL, Bunker, R, Cabrera, B, Calkins, R, Cameron, RA, Cartaro, C, Cerdeño, DG, Chang, Y-Y, Cooley, J, Coombes, H, Corbett, J, Cornell, B, Cushman, P, De Brienne, F, di Vacri, ML, Diamond, MD, Fascione, E, Figueroa-Feliciano, E, Fink, CW, Fouts, K, Fritts, M, Gerbier, G, Germond, R, Ghaith, M, Golwala, SR, Harris, HR, Herbert, N, Hines, BA, Hollister, MI, Hong, Z, Hoppe, EW, Hsu, L, Huber, ME, Iyer, V, Jardin, D, Jastram, A, Kelsey, MH, Kennedy, A, Kubik, A, Kurinsky, NA, Lawrence, RE, Li, A, Loer, B, Asamar, E Lopez, Lukens, P, MacDonell, D, MacFarlane, DB, Mahapatra, R, Mandic, V, Mast, N, Michaud, ÉM, Michielin, E, Mirabolfathi, N, Mohanty, B, Mendoza, JD Morales, Nagorny, S, Nelson, J, Neog, H, Orrell, JL, Oser, SM, Page, WA, Pakarha, P, Partridge, R, Podviianiuk, R, Ponce, F, Poudel, S, Pyle, M, Rau, W, Ren, R, Reynolds, T, Roberts, A, Robinson, AE, Rogers, HE, Saab, T, Sadoulet, B, Sander, J, Schnee, RW, Scorza, S, Senapati, K, Serfass, B, Sincavage, DJ, Stanford, C, Stein, M, Street, J, Toback, D, Underwood, R, and Verma, S

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

We present an analysis of electron recoils in cryogenic germanium detectors operated during the SuperCDMS Soudan experiment. The data are used to set new constraints on the axioelectric coupling of axionlike particles and the kinetic mixing parameter of dark photons, assuming the respective species constitutes all of the galactic dark matter. This study covers the mass range from 40 eV/c2 to 500 keV/c2 for both candidates, excluding previously untested parameter space for masses below ∼1 keV/c2. For the kinetic mixing of dark photons, values below 10-15 are reached for particle masses around 100 eV/c2; for the axioelectric coupling of axionlike particles, values below 10-12 are reached for particles with masses in the range of a few-hundred eV/c2.

Published
2020

13. Constraints on dark photons and axion-like particles from SuperCDMS Soudan

Author

SuperCDMS Collaboration, Aralis, T., Aramaki, T., Arnquist, I. J., Azadbakht, E., Baker, W., Banik, S., Barker, D., Bathurst, C., Bauer, D. A., Bezerra, L. V. S, Bhattacharyya, R., Binder, T., Bowles, M. A., Brink, P. L., Bunker, R., Cabrera, B., Calkins, R., Cameron, R. A., Cartaro, C., Cerde��o, D. G., Chang, Y. -Y., Cooley, J., Coombes, H., Corbett, J., Cornell, B., Cushman, P., De Brienne, F., di Vacri, M. L., Diamond, M. D., Fascione, E., Figueroa-Feliciano, E., Fink, C. W., Fouts, K., Fritts, M., Gerbier, G., Germond, R., Ghaith, M., Golwala, S. R., Harris, H. R., Herbert, N., Hines, B. A., Hollister, M. I., Hong, Z., Hoppe, E. W., Hsu, L., Huber, M. E., Iyer, V., Jardin, D., Jastram, A., Kelsey, M. H., Kennedy, A., Kubik, A., Kurinsky, N. A., Lawrence, R. E., Li, A., Loer, B., Asamar, E. Lopez, Lukens, P., MacDonell, D., MacFarlane, D. B., Mahapatra, R., Mandic, V., Mast, N., Michaud, ��. M., Michielin, E., Mirabolfathi, N., Mohanty, B., Mendoza, J. D. Morales, Nagorny, S., Nelson, J., Neog, H., Orrell, J. L., Oser, S. M., Page, W. A., Pakarha, P., Partridge, R., Podviianiuk, R., Ponce, F., Poudel, S., Pyle, M., Rau, W., Ren, R., Reynolds, T., Roberts, A., Robinson, A. E., Rogers, H. E., Saab, T., Sadoulet, B., Sander, J., Toback, D., Underwood, R., Verma, S., Villano, A. N., von Krosigk, B., Watkins, S. L., Wills, L., Wilson, J. S., Wilson, M. J., Winchell, J., Wright, D. H., Yellin, S., Young, B. A., Yu, T. C., Zhang, E., Zhao, X., and Zheng, L.

Subjects
High Energy Physics - Experiment (hep-ex), Physics - Instrumentation and Detectors, FOS: Physical sciences, Instrumentation and Detectors (physics.ins-det), High Energy Physics - Experiment
Abstract

We present an analysis of electron recoils in cryogenic germanium detectors operated during the SuperCDMS Soudan experiment. The data are used to set new constraints on the axioelectric coupling of axion-like particles and the kinetic mixing parameter of dark photons, assuming the respective species constitutes all of the galactic dark matter. This study covers the mass range from 40 eV/$c^2$ to 500 eV/$c^2$ for both candidates, excluding previously untested parameter space for masses below ~1 keV/$c^2$. For the kinetic mixing of dark photons, values below $10^{-15}$ are reached for particle masses around 100 eV/$c^2$; for the axioelectric coupling of axion-like particles, values below $10^{-12}$ are reached for particles with masses in the range of a few-hundred eV/$c^2$., 14 pages, 10 figures, 1 page correction included with 3 figures

Published
2019

14. 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
Quantum Physics, Particle and Plasma Physics, astro-ph.CO, Molecular, Nuclear, Atomic, Nuclear & Particles Physics, physics.ins-det, Astronomical and Space Sciences
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

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

Author

SuperCDMS Collaboration, Agnese, R., Aralis, T., Aramaki, T., Arnquist, I. J., Azadbakht, E., Baker, W., Banik, S., Barker, D., Bauer, D. A., Binder, T., Bowles, M. A., Brink, P. L., Bunker, R., Cabrera, B., Calkins, R., Cameron, R. A., Cartaro, C., Cerdeño, D. G., Chang, Y. -Y., Cooley, J., Cornell, B., Cushman, P., De Brienne, F., Doughty, T., Fascione, E., Figueroa-Feliciano, E., Fink, C. W., Fritts, M., Gerbier, G., Germond, R., Ghaith, M., Golwala, S. R., Harris, H. R., Herbert, N., Hong, Z., Hoppe, E. W., Hsu, L., Huber, M. E., Iyer, V., Jardin, D., Jastram, A., Jena, C., Kelsey, M. H., Kennedy, A., Kubik, A., Kurinsky, N. A., Lawrence, R. E., Loer, B., Asamar, E. Lopez, Lukens, P., MacDonell, D., Mahapatra, R., Mandic, V., Mast, N., Miller, E., Mirabolfathi, N., Mohanty, B., Mendoza, J. D. Morales, Nelson, J., Neog, H., Orrell, J. L., Oser, S. M., Page, W. A., Partridge, R., Pepin, M., Ponce, F., Poudel, S., Pyle, M., Qiu, H., Rau, W., Reisetter, A., Ren, R., Reynolds, T., Roberts, A., Robinson, A. E., Rogers, H. E., Saab, T., Sadoulet, B., Sander, J., Scarff, A., Schnee, R. W., Scorza, S., Senapati, K., Serfass, B., Speller, D., Stanford, C., Stein, M., Street, J., Tanaka, H. A., Toback, D., Underwood, R., Villano, A. N., von Krosigk, B., Watkins, S. L., Wilson, J. S., Wilson, M. J., Winchell, J., Wright, D. H., Yellin, S., Young, B. A., Zhang, X., and Zhao, X.

Subjects
Physics, Scattering cross-section, Cosmology and Nongalactic Astrophysics (astro-ph.CO), Physics - Instrumentation and Detectors, 010308 nuclear & particles physics, Dark matter, FOS: Physical sciences, Instrumentation and Detectors (physics.ins-det), 01 natural sciences, Low energy, 0103 physical sciences, Cryogenic Dark Matter Search, 010306 general physics, Low Mass, Mathematical physics, Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract

Author(s): 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; Cerdeno, 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 | 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 (l10 GeV/c2) dark matter particles. We present an analysis of the final CDMSlite dataset, taken with a different detector than was used for the two previous CDMSlite datasets. This analysis includes a data "salting" method to protect against bias, improved noise discrimination, background modeling, and the use of profile likelihood methods to search for a dark matter signal in the presence of backgrounds. We achieve an energy threshold of 70 eV and significantly improve the sensitivity for dark matter particles with masses between 2.5 and 10 GeV/c2 compared to previous analyses. We set an upper limit on the dark matter-nucleon scattering cross section in germanium of 5.4×10-42 cm2 at 5 GeV/c2, a factor of ∼2.5 improvement over the previous CDMSlite result.

Published
2019

16. The COBRA demonstrator at the LNGS underground laboratory

Author

The COBRA collaboration, Ebert, J., Fritts, M., Gehre, D., Gößling, C., Göpfert, T., Hagner, C., Heidrich, N., Klingenberg, R., Köttig, T., Kröninger, K., Michel, T., Neddermann, T., Nitsch, C., Oldorf, C., Quante, T., Rajek, S., Rebber, H., Reinecke, O., Rohatsch, K., Schulz, O., Sörensen, A., Stekl, I., Tebrügge, J., Temminghoff, R., Theinert, R., Timm, J., Wester, T., Wonsak, B., Zatschler, S., and Zuber, K.

Subjects
Physics, Nuclear and High Energy Physics, Physics - Instrumentation and Detectors, 010308 nuclear & particles physics, business.industry, Detector, FOS: Physical sciences, Instrumentation and Detectors (physics.ins-det), 01 natural sciences, Semiconductor detector, Nuclear physics, 0103 physical sciences, Underground laboratory, Nuclear Experiment (nucl-ex), Aerospace engineering, 010306 general physics, business, Nuclear Experiment, Instrumentation
Abstract

The COBRA demonstrator, a prototype for a large-scale experiment searching for neutrinoless double beta-decay, was built at the underground laboratory Laboratori Nazionali del Gran Sasso (LNGS) in Italy. It consists of an array of 64 monolithic, calorimetric CdZnTe semiconductor detectors with a coplanar-grid design and a total mass of 380g. It is used to investigate the experimental challenges faced when operating CdZnTe detectors in low-background mode, to identify potential background sources and to show the long-term stability of the detectors. The first data-taking period started in 2011 with a subset of the detectors, while the demonstrator was completed in November 2013. To date, more than 250kg d of data have been collected. This paper describes technical details of the experimental setup and the hardware components., 8 pages, 10 figures, submitted to NIM A

Published
2016

17. 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, YY, 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, and Villano, AN

Subjects
Astrophysics::Cosmology and Extragalactic Astrophysics
Abstract

© 2018 authors. Published by the American Physical Society. 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/c2. 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

18. 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
General Physics, Engineering, hep-ex, Physical Sciences, astro-ph.CO, Astrophysics::Cosmology and Extragalactic Astrophysics, physics.ins-det, Mathematical 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 0.93g 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 (0.49gd). These results demonstrate the scientific potential of phonon-mediated semiconductor detectors that are sensitive to single electronic excitations.

Published
2018

19. Results from the Super Cryogenic Dark Matter Search Experiment at Soudan

Author

Agnese, R, Aramaki, T, Arnquist, IJ, Baker, W, Balakishiyeva, D, Banik, S, 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, Chen, Y, Cooley, J, Cornell, B, Cushman, P, Daal, M, Di Stefano, PCF, Doughty, T, Fascione, E, Figueroa-Feliciano, E, Fritts, M, Gerbier, G, Germond, R, 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, 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, K, Page, WA, Partridge, R, Penalver Martinez, M, Pepin, 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, and Von Krosigk, B

Abstract

© 2018 authors. Published by the American Physical Society. Published by the American Physical Society. We report the result of a blinded search for weakly interacting massive particles (WIMPs) using the majority of the SuperCDMS Soudan data set. With an exposure of 1690 kg d, a single candidate event is observed, consistent with expected backgrounds. This analysis (combined with previous Ge results) sets an upper limit on the spin-independent WIMP-nucleon cross section of 1.4×10-44 (1.0×10-44) cm2 at 46 GeV/c2. These results set the strongest limits for WIMP-germanium-nucleus interactions for masses >12 GeV/c2.

Published
2018

20. Results from the Super Cryogenic Dark Matter Search Experiment at Soudan

Author

Agnese, R, Aramaki, T, Arnquist, IJ, Baker, W, Balakishiyeva, D, Banik, S, 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, Chen, Y, Cooley, J, Cornell, B, Cushman, P, Daal, M, Di Stefano, PCF, Doughty, T, Fascione, E, Figueroa-Feliciano, E, Fritts, M, Gerbier, G, Germond, R, 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, 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, K, Page, WA, Partridge, R, Penalver Martinez, M, Pepin, 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, Wilson, JS, Wilson, MJ, Wright, DH, Yellin, S, and Yen, JJ

Subjects
General Physics, Engineering, hep-ex, Physical Sciences, SuperCDMS Collaboration, hep-ph, Mathematical Sciences
Abstract

We report the result of a blinded search for weakly interacting massive particles (WIMPs) using the majority of the SuperCDMS Soudan data set. With an exposure of 1690kg d, a single candidate event is observed, consistent with expected backgrounds. This analysis (combined with previous Ge results) sets an upper limit on the spin-independent WIMP-nucleon cross section of 1.4×10^{-44} (1.0×10^{-44}) cm^{2} at 46 GeV/c^{2}. These results set the strongest limits for WIMP-germanium-nucleus interactions for masses >12 GeV/c^{2}.

Published
2018

21. 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, and Tanaka, HA

Subjects
Physics::Instrumentation and Detectors, High Energy Physics::Experiment
Abstract

© 2018 American Physical Society. 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

22. 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
Quantum Physics, Particle and Plasma Physics, Physics::Instrumentation and Detectors, hep-ex, astro-ph.CO, Molecular, High Energy Physics::Experiment, Nuclear, physics.ins-det, Atomic, Nuclear & Particles Physics, Astronomical and Space Sciences, astro-ph.IM
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

23. Results from the Super Cryogenic Dark Matter Search (SuperCDMS) experiment at Soudan

Author

SuperCDMS Collaboration, Agnese, R., Aramaki, T., Arnquist, I. J., Baker, W., Balakishiyeva, D., Banik, S., Barker, D., Thakur, R. Basu, Bauer, D. A., Binder, T., Bowles, M. A., Brink, P. L., Bunker, R., Cabrera, B., Caldwell, D. O., Calkins, R., Cartaro, C., Cerde��o, D. G., Chang, Y., Chen, Y., Cooley, J., Cornell, B., Cushman, P., Daal, M., Di Stefano, P. C. F., Doughty, T., Fascione, E., Figueroa-Feliciano, E., Fritts, M., Gerbier, G., Germond, R., Ghaith, M., Godfrey, G. L., Golwala, S. R., Hall, J., Harris, H. R., Hong, Z., Hoppe, E. W., Hsu, L., Huber, M. E., Iyer, V., Jardin, D., Jastram, A., Jena, C., Kelsey, M. H., Kennedy, A., Kubik, A., Kurinsky, N. A., Loer, B., Asamar, E. Lopez, Lukens, P., MacDonell, D., Mahapatra, R., Mandic, V., Mast, N., Miller, E. H., Mirabolfathi, N., Mohanty, B., Mendoza, J. D. Morales, Nelson, J., Orrell, J. L., Oser, S. M., Page, K., Page, W. A., Partridge, R., Martinez, M. Penalver, Pepin, M., Phipps, A., Poudel, S., Pyle, M., Qiu, H., Rau, W., Redl, P., Reisetter, A., Reynolds, T., Roberts, A., Robinson, A. E., Rogers, H. E., Saab, T., Sadoulet, B., Sander, J., Schneck, K., Schnee, R. W., Scorza, S., Senapati, K., Serfass, B., Speller, D., Stein, M., Street, J., Tanaka, H. A., Toback, D., Underwood, R., Villano, A. N., von Krosigk, B., Welliver, B., Wilson, J. S., Wilson, M. J., Wright, D. H., Yellin, S., Yen, J. J., Young, B. A., Zhang, X., and Zhao, X.

Subjects
High Energy Physics - Experiment (hep-ex), High Energy Physics - Phenomenology, High Energy Physics - Phenomenology (hep-ph), FOS: Physical sciences, High Energy Physics - Experiment
Abstract

We report the result of a blinded search for Weakly Interacting Massive Particles (WIMPs) using the majority of the SuperCDMS Soudan dataset. With an exposure of 1690 kg days, a single candidate event is observed, consistent with expected backgrounds. This analysis (combined with previous Ge results) sets an upper limit on the spin-independent WIMP--nucleon cross section of $1.4 \times 10^{-44}$ ($1.0 \times 10^{-44}$) cm$^2$ at 46 GeV/$c^2$. These results set the strongest limits for WIMP--germanium-nucleus interactions for masses $>$12 GeV/$c^2$.

Published
2017

24. Background Studies for the MINER Coherent Neutrino Scattering Reactor Experiment

Author

Miner, Collaboration, Agnolet, G., Baker, W., Barker, D., Beck, R., Carroll, T. J., Cesar, J., Cushman, P., Dent, J. B., Rijck, S., Dutta, B., Flanagan, W., Fritts, M., Gao, Y., Harris, H. R., Hays, C. C., Iyer, V., Jastram, A., Kadribasic, F., Kennedy, A., Kubik, A., Ogawa, I., Lang, K., Mahapatra, R., Mandic, V., Martin, R. D., Mast, N., Mcdeavitt, S., Mirabolfathi, N., Mohanty, B., Nakajima, K., Newhouse, J., Newstead, J. L., Phan, D., Proga, M., Roberts, A., Rogachev, G., Salazar, R., Sander, J., Senapati, K., Shimada, M., Louis Strigari, Tamagawa, Y., Teizer, W., Vermaak, J. I. C., Villano, A. N., Walker, J., Webb, B., Wetzel, Z., and Yadavalli, S. A.

Subjects
High Energy Physics - Experiment (hep-ex), Physics - Instrumentation and Detectors, FOS: Physical sciences, Instrumentation and Detectors (physics.ins-det), High Energy Physics - Experiment
Abstract

The proposed Mitchell Institute Neutrino Experiment at Reactor (MINER) experiment at the Nuclear Science Center at Texas A&M University will search for coherent elastic neutrino-nucleus scattering within close proximity (about 2 meters) of a 1 MW TRIGA nuclear reactor core using low threshold, cryogenic germanium and silicon detectors. Given the Standard Model cross section of the scattering process and the proposed experimental proximity to the reactor, as many as 5 to 20 events/kg/day are expected. We discuss the status of preliminary measurements to characterize the main backgrounds for the proposed experiment. Both in situ measurements at the experimental site and simulations using the MCNP and GEANT4 codes are described. A strategy for monitoring backgrounds during data taking is briefly discussed., 12 pages, 14 figures

Published
2016

25. Nanoinformatics: a new area of research in nanomedicine

Author

Maojo V, Fritts M, de la Iglesia D, Cachau RE, Garcia-Remesal M, Mitchell JA, and Kulikowski C

Subjects
Medicine (General), R5-920
Abstract

Victor Maojo,1 Martin Fritts,2,3 Diana de la Iglesia,1 Raul E Cachau,4 Miguel Garcia-Remesal,1 Joyce A Mitchell,5 Casimir Kulikowski61Biomedical Informatics Group, Departamento de Inteligencia Artificial, Facultad de Informática, Universidad Politécnica de Madrid, Spain; 2SAIC-Frederick Inc, National Cancer Institute at Frederick, Frederick, Maryland, 3National Institute of Standards and Technology, Gaithersburg, Maryland, 4Advanced Biomedical Computing Center, National Cancer Institute, SAIC-Frederick Inc, Frederick, Maryland, 5Department of Biomedical Informatics, University of Utah, Utah, 6Department of Computer Science, Rutgers, The State University of New Jersey, New Jersey, USAAbstract: Over a decade ago, nanotechnologists began research on applications of nanomaterials for medicine. This research has revealed a wide range of different challenges, as well as many opportunities. Some of these challenges are strongly related to informatics issues, dealing, for instance, with the management and integration of heterogeneous information, defining nomenclatures, taxonomies and classifications for various types of nanomaterials, and research on new modeling and simulation techniques for nanoparticles. Nanoinformatics has recently emerged in the USA and Europe to address these issues. In this paper, we present a review of nanoinformatics, describing its origins, the problems it addresses, areas of interest, and examples of current research initiatives and informatics resources. We suggest that nanoinformatics could accelerate research and development in nanomedicine, as has occurred in the past in other fields. For instance, biomedical informatics served as a fundamental catalyst for the Human Genome Project, and other genomic and –omics projects, as well as the translational efforts that link resulting molecular-level research to clinical problems and findings.Keywords: biomedical informatics, nanomedicine, nanotoxicology, ontologies, electronic health records

Published
2012

26. Maximum Likelihood Analysis of Low Energy CDMS II Germanium Data

Author

SuperCDMS Collaboration, Agnese, R., Anderson, A. J., Balakishiyeva, D., Thakur, R. Basu, Bauer, D. A., Billard, J., Borgland, A., Bowles, M. A., Brandt, D., Brink, P. L., Bunker, R., Cabrera, B., Caldwell, D. O., Cerdeno, D. G., Chagani, H., Chen, Y., Cooley, J., Cornell, B., Crewdson, C. H., Cushman, P., Daal, M., Di Stefano, P. C. F., Doughty, T., Esteban, L., Fallows, S., Figueroa-Feliciano, E., Fritts, M., Godfrey, G. L., Golwala, S. R., Graham, M., Hall, J., Harris, H. R., Hertel, S. A., Hofer, T., Holmgren, D., Hsu, L., Huber, M. E., Jastram, A., Kamaev, O., Kara, B., Kelsey, M. H., Kennedy, A., Kiveni, M., Koch, K., Leder, A., Loer, B., Asamar, E. Lopez, Mahapatra, R., Mandic, V., Martinez, C., McCarthy, K. A., Mirabolfathi, N., Moffatt, R. A., Moore, D. C., Nelson, R. H., Oser, S. M., Page, K., Page, W. A., Partridge, R., Pepin, M., Phipps, A., Prasad, K., Pyle, M., Qiu, H., Rau, W., Redl, P., Reisetter, A., Ricci, Y., Rogers, H. E., Saab, T., Sadoulet, B., Sander, J., Schneck, K., Schnee, R. W., Scorza, S., Serfass, B., Shank, B., Speller, D., Upadhyayula, S., Villano, A. N., Welliver, B., Wright, D. H., Yellin, S., Yen, J. J., Young, B. A., Zhang, J., and UAM. Departamento de Física Teórica

Subjects
Nuclear and High Energy Physics, Particle physics, Physics - Instrumentation and Detectors, Cosmology and Nongalactic Astrophysics (astro-ph.CO), Calibration (statistics), Dark matter, Massive particle, chemistry.chemical_element, FOS: Physical sciences, Germanium, 01 natural sciences, Signal, Atomic, Particle and Plasma Physics, WIMP, 0103 physical sciences, Nuclear, 010306 general physics, physics.ins-det, Instrumentation and Methods for Astrophysics (astro-ph.IM), Physics, Quantum Physics, 010308 nuclear & particles physics, Física, Molecular, Instrumentation and Detectors (physics.ins-det), Nuclear & Particles Physics, chemistry, Weakly interacting massive particles, astro-ph.CO, Cryogenic Dark Matter Search, Astrophysics - Instrumentation and Methods for Astrophysics, Astronomical and Space Sciences, Astrophysics - Cosmology and Nongalactic Astrophysics, astro-ph.IM
Abstract

Artículo escrito por un elevado número de autores, sólo se referencian el primero, los autores que firman como Universidad Autónoma de Madrid y el grupo de colaboración en el caso de que aparezca en el artículo, 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, This work is supported in part by the National Science Foundation, by the United States Department of Energy, by NSERC Canada, and by MultiDark (Spanish MINECO). Fermilab is operated by the Fermi Research Alliance, LLC under Contract No. De-AC02-07CH11359. SLAC is operated under Contract No. DE-AC02-76SF00515 with the United States Department of Energy

Published
2014
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27. 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
General Physics, Engineering, CDMS Collaboration, hep-ex, Physical Sciences, astro-ph.CO, physics.ins-det, Mathematical Sciences, astro-ph.IM
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

28. 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, and Zhang, J

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 Pb206 are limited to

Published
2013

29. 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
Quantum Physics, Particle and Plasma Physics, Physics::Instrumentation and Detectors, hep-ex, Astrophysics::Instrumentation and Methods for Astrophysics, astro-ph.CO, Molecular, High Energy Physics::Experiment, Nuclear, Astrophysics::Cosmology and Extragalactic Astrophysics, Nuclear & Particles Physics, Atomic, Astronomical and Space Sciences
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

30. Search for annual modulation in low-energy CDMS-II data

Author

CDMS Collaboration, Ahmed, Z., Akerib, D. S., Anderson, A. J., Arrenberg, S., Bailey, C. N., Balakishiyeva, D., Baudis, L., Bauer, D. A., Brink, P. L., Bruch, T., Bunker, R., Cabrera, B., Caldwell, D. O., Cooley, J., Cushman, P., Daal, M., DeJongh, F., Di Stefano, P. C. F., Dragowsky, M. R., Fallows, S., Figueroa-Feliciano, E., Filippini, J., Fox, J., Fritts, M., Golwala, S. R., Hall, J., Hertel, S. A., Hofer, T., Holmgren, D., Hsu, L., Huber, M. E., Kamaev, O., Kiveni, M., Kos, M., Leman, S. W., Liu, S., Mahapatra, R., Mandic, V., McCarthy, K. A., Mirabolfathi, N., Moore, D. C., Nelson, H., Ogburn, R. W., Phipps, A., Prasad, K., Pyle, M., Qiu, X., Rau, W., Reisetter, A., Ricci, Y., Saab, T., Sadoulet, B., Sander, J., Schnee, R. W., Seitz, D., Serfass, B., Speller, D., Sundqvist, K. M., Tarka, M., Thakur, R. B., Villano, A. N., Welliver, B., Yellin, S., Yoo, J., Young, B. A., and Zhang, J.

Subjects
High Energy Physics - Experiment (hep-ex), Cosmology and Nongalactic Astrophysics (astro-ph.CO), FOS: Physical sciences, Astrophysics - Cosmology and Nongalactic Astrophysics, High Energy Physics - Experiment
Abstract

We report limits on annual modulation of the low-energy event rate from the Cryogenic Dark Matter Search (CDMS II) experiment at the Soudan Underground Laboratory. Such a modulation could be produced by interactions from Weakly Interacting Massive Particles (WIMPs) with masses ~10 GeV/c^2. We find no evidence for annual modulation in the event rate of veto-anticoincident single-detector interactions consistent with nuclear recoils, and constrain the magnitude of any modulation to 98% confidence. For events consistent with electron recoils, no significant modulation is observed for either single- or multiple-detector interactions in the 3.0-7.4 keVee range., 5 pages, plus 8 pages supplementary materials

Published
2012
Full Text
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31. Combined limits on WIMPs from the CDMS and EDELWEISS experiments

Author

Ahmed, Z, Akerib, DS, Armengaud, E, Arrenberg, S, Augier, C, Bailey, CN, Balakishiyeva, D, Baudis, L, Bauer, DA, Benoît, A, Bergé, L, Blümer, J, Brink, PL, Broniatowski, A, Bruch, T, Brudanin, V, Bunker, R, Cabrera, B, Caldwell, DO, Censier, B, Chapellier, M, Chardin, G, Charlieux, F, Cooley, J, Coulter, P, Cox, GA, Cushman, P, Daal, M, Defay, X, De Jesus, M, Dejongh, F, Di Stefano, PCF, Dolgorouki, Y, Domange, J, Dumoulin, L, Dragowsky, MR, Eitel, K, Fallows, S, Figueroa-Feliciano, E, Filippini, J, Filosofov, D, Fourches, N, Fox, J, Fritts, M, Gascon, J, Gerbier, G, Gironnet, J, Golwala, SR, Gros, M, Hall, J, Hennings-Yeomans, R, Henry, S, Hertel, SA, Hervé, S, Holmgren, D, Hsu, L, Huber, ME, Juillard, A, Kamaev, O, Kiveni, M, Kluck, H, Kos, M, Kozlov, V, Kraus, H, Kudryavtsev, VA, Leman, SW, Liu, S, Loaiza, P, Mahapatra, R, Mandic, V, Marnieros, S, Martinez, C, McCarthy, KA, Mirabolfathi, N, Moore, D, Nadeau, P, Navick, XF, Nelson, H, Nones, C, Ogburn, RW, Olivieri, E, Pari, P, Pattavina, L, Paul, B, Phipps, A, Pyle, M, Qiu, X, Rau, W, Reisetter, A, Ricci, Y, Robinson, M, Rozov, S, Saab, T, Sadoulet, B, Sander, J, and Sanglard, V

Abstract

The CDMS and EDELWEISS collaborations have combined the results of their direct searches for dark matter using cryogenic germanium detectors. The total data set represents 614kg•days equivalent exposure. A straightforward method of combination was chosen for its simplicity before data were exchanged between experiments. The results are interpreted in terms of limits on spin-independent weakly interacting, massive particle (WIMP)-nucleon cross section. For a WIMP mass of 90GeV/c2, where this analysis is most sensitive, a cross section of 3.3×10-44cm2 is excluded at 90% C.L. At higher WIMP masses, the combination improves the individual limits, by a factor 1.6 above 700GeV/c2. Alternative methods of combining the data provide stronger constraints for some ranges of WIMP masses and weaker constraints for others. © 2011 American Physical Society.

Published
2011

32. Search for inelastic dark matter with the CDMS II experiment

Author

Ahmed, Z, Akerib, DS, Arrenberg, S, Bailey, CN, Balakishiyeva, D, Baudis, L, Bauer, DA, Brink, PL, Bruch, T, Bunker, R, Cabrera, B, Caldwell, DO, Cooley, J, Do Couto E Silva, E, Cushman, P, Daal, M, Dejongh, F, Di Stefano, P, Dragowsky, MR, Duong, L, Fallows, S, Figueroa-Feliciano, E, Filippini, J, Fox, J, Fritts, M, Golwala, SR, Hall, J, Hennings-Yeomans, R, Hertel, SA, Holmgren, D, Hsu, L, Huber, ME, Kamaev, O, Kiveni, M, Kos, M, Leman, SW, Liu, S, Mahapatra, R, Mandic, V, McCarthy, KA, Mirabolfathi, N, Moore, D, Nelson, H, Ogburn, RW, Phipps, A, Pyle, M, Qiu, X, Ramberg, E, Rau, W, Razeti, M, Reisetter, A, Resch, R, Saab, T, Sadoulet, B, Sander, J, Schnee, RW, Seitz, DN, Serfass, B, Sundqvist, KM, Tarka, M, Wikus, P, Yellin, S, Yoo, J, Young, BA, and Zhang, J

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

Results are presented from a reanalysis of the entire five-tower data set acquired with the Cryogenic Dark Matter Search (CDMS II) experiment at the Soudan Underground Laboratory, with an exposure of 969 kg-days. The analysis window was extended to a recoil energy of 150 keV, and an improved surface-event background-rejection cut was defined to increase the sensitivity of the experiment to the inelastic dark matter (iDM) model. Three dark matter candidates were found between 25 keV and 150 keV. The probability to observe three or more background events in this energy range is 11%. Because of the occurrence of these events, the constraints on the iDM parameter space are slightly less stringent than those from our previous analysis, which used an energy window of 10-100 keV. © 2011 American Physical Society.

Published
2011

34. Combined limits on WIMPs from the CDMS and EDELWEISS experiments

Author

Ahmed, Z, Akerib, DS, Armengaud, E, Arrenberg, S, Augier, C, Bailey, CN, Balakishiyeva, D, Baudis, L, Bauer, DA, Benoît, A, Bergé, L, Blümer, J, Brink, PL, Broniatowski, A, Bruch, T, Brudanin, V, Bunker, R, Cabrera, B, Caldwell, DO, Censier, B, Chapellier, M, Chardin, G, Charlieux, F, Cooley, J, Coulter, P, Cox, GA, Cushman, P, Daal, M, Defay, X, De Jesus, M, DeJongh, F, Di Stefano, PCF, Dolgorouki, Y, Domange, J, Dumoulin, L, Dragowsky, MR, Eitel, K, Fallows, S, Figueroa-Feliciano, E, Filippini, J, Filosofov, D, Fourches, N, Fox, J, Fritts, M, Gascon, J, Gerbier, G, Gironnet, J, Golwala, SR, Gros, M, Hall, J, Hennings-Yeomans, R, Henry, S, Hertel, SA, Hervé, S, Holmgren, D, Hsu, L, Huber, ME, Juillard, A, Kamaev, O, Kiveni, M, Kluck, H, Kos, M, Kozlov, V, Kraus, H, Kudryavtsev, VA, Leman, SW, Liu, S, Loaiza, P, Mahapatra, R, Mandic, V, Marnieros, S, Martinez, C, McCarthy, KA, Mirabolfathi, N, Moore, D, Nadeau, P, Navick, X-F, Nelson, H, Nones, C, Ogburn, RW, Olivieri, E, Pari, P, Pattavina, L, Paul, B, Phipps, A, Pyle, M, Qiu, X, Rau, W, Reisetter, A, Ricci, Y, Robinson, M, Rozov, S, Saab, T, Sadoulet, B, Sander, J, Sanglard, V, Schmidt, B, Schnee, RW, Scorza, S, and Seitz, DN

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

The CDMS and EDELWEISS collaborations have combined the results of their direct searches for dark matter using cryogenic germanium detectors. The total data set represents 614kg•days equivalent exposure. A straightforward method of combination was chosen for its simplicity before data were exchanged between experiments. The results are interpreted in terms of limits on spin-independent weakly interacting, massive particle (WIMP)-nucleon cross section. For a WIMP mass of 90GeV/c2, where this analysis is most sensitive, a cross section of 3.3×10-44cm2 is excluded at 90% C.L. At higher WIMP masses, the combination improves the individual limits, by a factor 1.6 above 700GeV/c2. Alternative methods of combining the data provide stronger constraints for some ranges of WIMP masses and weaker constraints for others. © 2011 American Physical Society.

Published
2011

35. Numerical simulation of plasmas on an unstructured grid

Author

Drobot, A. T., Alex Friedman, Fritts, M. J., Lottati, I., and Nielsen Jr, D.

Subjects
Computer simulation, Computer science, Frequency domain, Vectorization (mathematics), Tetrahedron, Solver, Grid, Data structure, Computational science, Unstructured grid
Abstract

Summary form only. The use of unstructured grids provides some inherent advantages in the accurate simulation of plasma problems that involve complex configurations and where the treatment of complicated boundaries is important. The use of a triangular grid in two dimensions and of a tetrahedral grid with arbitrary connectivity in three dimensions allows a straightforward representation of complex geometries and allows the resolution of the mesh to vary according to the requirements of a problem. The authors have constructed a very simple and efficient data structure to represent unstructured grids for geometries with arbitrarily shaped boundaries. The data contains information about the location of vertices, edges, sides, and cells and permits with one degree of indirectness the implementation of algorithms for field solvers and for particle orbit integration. The numerical algorithms that have been constructed include a potential solver, an electromagnetic solver for both the time and frequency domain, and a particle-in-cell simulation. The efficiency and vectorization of the basic code functions are retained and yield timing results comparable with structured mesh codes. >

Published
2003

36. Oscillator Strengths for B-X, C-X, and E-X Transitions in Carbon Monoxide

Author

Federman, S. R., Fritts, M., Cheng, S., Menningen, K. M., Knauth, David C., and Fulk, K.

Subjects
Astrophysics (astro-ph), FOS: Physical sciences, Astrophysics
Abstract

Band oscillator strengths for electronic transitions in CO were obtained at the Synchrotron Radiation Center of the University of Wisconsin-Madison. Our focus was on transitions that are observed in interstellar spectra with the Far Ultraviolet Spectroscopic Explorer; these transitions are also important in studies of selective isotope photodissociation where fractionation among isotopomers can occur. Absorption from the ground state (X ^1Sigma^+ v'' = 0) to A ^1Pi (v'= 5), B ^1Sigma^+ (v' = 0, 1), C ^1Sigma^+ (v' = 0, 1), and E ^1Pi (v' = 0) was measured. Fits to the A - X (5, 0) band, whose oscillator strength is well known, yielded the necessary column density and excitation temperature. These parameters were used in a least-squares fit of the observed profiles for the transitions of interest to extract their band oscillator strengths. Our oscillator strengths are in excellent agreement with results from recent experiments using a variety of techniques. This agreement provides the basis for a self-consistent set of f-values at far ultraviolet wavelengths for studies of interstellar (and stellar) CO., 22 pages, 3 figures, ApJS (in press)

Published
2001

37. Muscle proteins and DNA in rat quadriceps during growth

Author

Fritts M, Kowalski K, and Gordon Ee

Subjects
Chemical Phenomena, business.industry, Muscles, Muscle Proteins, DNA, Growth, Biology, In Vitro Techniques, Cell biology, Rats, chemistry.chemical_compound, Chemistry, Text mining, chemistry, Physiology (medical), Animals, business
Published
1966

38. Search for annual modulation in low-energy CDMS-II data

Author

Ahmed, Z., Akerib, D. S., Anderson, A. J., Arrenberg, S., Bailey, C. N., Balakishiyeva, D., Baudis, L., Bauer, D. A., Brink, P. L., Bruch, T., Bunker, R., Cabrera, B., Caldwell, D. O., Cooley, J., Cushman, P., Daal, M., Dejongh, F., Di Stefano, P. C. F., Dragowsky, M. R., Fallows, S., Figueroa-Feliciano, E., Filippini, J., Fox, J., Fritts, M., Golwala, S. R., Hall, J., Hertel, S. A., Hofer, T., Donald Holmgren, Hsu, L., Huber, M. E., Kamaev, O., Kiveni, M., Kos, M., Leman, S. W., Liu, S., Mahapatra, R., Mandic, V., Mccarthy, K. A., Mirabolfathi, N., Moore, D. C., Nelson, H., Ogburn, R. W., Phipps, A., Prasad, K., Pyle, M., Qiu, X., Rau, W., Reisetter, A., Ricci, Y., Saab, T., Sadoulet, B., Sander, J., Schnee, R. W., Seitz, D., Serfass, B., Speller, D., Sundqvist, K. M., Tarka, M., Thakur, R. B., Villano, A. N., Welliver, B., Yellin, S., Yoo, J., Young, B. A., and Zhang, J.

39. Combined limits on WIMPs from the CDMS and EDELWEISS experiments

Author

Jeffrey P. Filippini, S. Henry, K. Eitel, Tarek Saab, P. Pari, M. R. Dragowsky, S. Hervé, E. Olivieri, N. Mirabolfathi, Steven W. Leman, P. Cushman, S. V. Rozov, M. A. Verdier, L. Bergé, R. W. Schnee, Martin E. Huber, Kevin A. McCarthy, D. O. Caldwell, F. DeJongh, A. S. Torrento-Coello, J. Hall, Enectali Figueroa-Feliciano, S. Arrenberg, Laura Baudis, D. Balakishiyeva, S. Fallows, Alain Benoit, P. Coulter, Y. Ricci, P. Wikus, G. Chardin, X. Defay, S. J. Yellin, R. Bunker, J. Domange, Miguel Daal, O. Kamaev, D. A. Bauer, B. Paul, A. Broniatowski, H. N. Nelson, A. Reisetter, Blas Cabrera, Cristián Martínez, S. Liu, P. L. Brink, H. Kluck, B. Censier, Z. Ahmed, W. Rau, M. Kos, V. A. Kudryavtsev, S. Scorza, J. Gascon, S. A. Hertel, G. A. Cox, Bernard Sadoulet, D. Filosofov, Y. Dolgorouki, P. Di Stefano, T. Bruch, Bruno Serfass, J. Gironnet, D. N. Seitz, P. Nadeau, E. Armengaud, R. J. Walker, L. Pattavina, R. Hennings-Yeomans, H. Kraus, M. Tarka, Max Robinson, C. Augier, M. Kiveni, M. Gros, P. Loaiza, F. Charlieux, X. Qiu, A. Phipps, R. W. Ogburn, Sunil Golwala, X. F. Navick, C. N. Bailey, M. De Jesus, D. S. Akerib, J. Fox, J. Blümer, E. Yakushev, A. Juillard, M. Pyle, L. Hsu, Jie Zhang, V. Kozlov, Jodi Cooley, Matthew Fritts, Vuk Mandic, B. Schmidt, V.B. Brudanin, M. Chapellier, L. Vagneron, N. Fourches, S. Marnieros, J. Yoo, David Moore, R. Mahapatra, Donald J. Holmgren, J. Sander, C. Nones, Betty A. Young, K. M. Sundqvist, G. Gerbier, V. Sanglard, S. Semikh, L. Dumoulin, Ahmed, Z, Akerib, D, Armengaud, E, Arrenberg, S, Augier, C, Bailey, C, Balakishiyeva, D, Baudis, L, Bauer, D, Benoit, A, Berge, L, Bluemer, J, Brink, P, Broniatowski, A, Bruch, T, Brudanin, V, Bunker, R, Cabrera, B, Caldwell, D, Censier, B, Chapellier, M, Chardin, G, Charlieux, F, Cooley, J, Coulter, P, Cox, G, Cushman, P, Daal, M, Defay, X, De Jesus, M, Dejongh, F, Di Stefano, P, Dolgorouki, Y, Domange, J, Dumoulin, L, Dragowsky, M, Eitel, K, Fallows, S, Figueroa Feliciano, E, Filippini, J, Filosofov, D, Fourches, N, Fox, J, Fritts, M, Gascon, J, Gerbier, G, Gironnet, J, Golwala, S, Gros, M, Hall, J, Hennings Yeomans, R, Henry, S, Hertel, S, Herve, S, Holmgren, D, Hsu, L, Huber, M, Juillard, A, Kamaev, O, Kiveni, M, Kluck, H, Kos, M, Kozlov, V, Kraus, H, Kudryavtsev, V, Leman, S, Liu, S, Loaiza, P, Mahapatra, R, Mandic, V, Marnieros, S, Martinez, C, Mccarthy, K, Mirabolfathi, N, Moore, D, Nadeau, P, Navick, X, Nelson, H, Nones, C, Ogburn, R, Olivieri, E, Pari, P, Pattavina, L, Paul, B, Phipps, A, Pyle, M, Qiu, X, Rau, W, Reisetter, A, Ricci, Y, Robinson, M, Rozov, S, Saab, T, Sadoulet, B, Sander, J, Sanglard, V, Schmidt, B, Schnee, R, Scorza, S, Seitz, D, Semikh, S, Serfass, B, Sundqvist, K, Tarka, M, Torrento Coello, A, Vagneron, L, Verdier, M, Walker, R, Wikus, P, Yakushev, E, Yellin, S, Yoo, J, Young, B, Zhang, J, Institut de Physique Nucléaire de Lyon (IPNL), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse (CSNSM), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Laboratoire Souterrain de Modane (LSM - UMR 6417), Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019])-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Institut Rayonnement Matière de Saclay (IRAMIS), EDELWEISS, Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), and Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019])

Subjects
Nuclear and High Energy Physics, Particle physics, Cosmology and Nongalactic Astrophysics (astro-ph.CO), Dark Matter, bolometers, germanium detectors, Dark matter, Massive particle, FOS: Physical sciences, Elementary particle, Astrophysics::Cosmology and Extragalactic Astrophysics, EDELWEISS, 7. Clean energy, 01 natural sciences, High Energy Physics - Experiment, High Energy Physics - Experiment (hep-ex), WIMP, 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], 010306 general physics, Physics, 010308 nuclear & particles physics, Astrophysics::Instrumentation and Methods for Astrophysics, Fermion, Baryon, Weakly interacting massive particles, High Energy Physics::Experiment, Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract

The CDMS and EDELWEISS collaborations have combined the results of their direct searches for dark matter using cryogenic germanium detectors. The total data set represents 614 kg.d equivalent exposure. A straightforward method of combination was chosen for its simplicity before data were exchanged between experiments. The results are interpreted in terms of limits on spin-independent WIMP-nucleon cross-section. For a WIMP mass of 90 GeV/c^2, where this analysis is most sensitive, a cross-section of 3.3 x 10^{-44} cm^2 is excluded at 90% CL. At higher WIMP masses, the combination improves the individual limits, by a factor 1.6 above 700 GeV/c^2. Alternative methods of combining the data provide stronger constraints for some ranges of WIMP masses and weaker constraints for others., Events, efficiencies, and main limit are available in text format (see README.txt)

Published
2011

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