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10 results on '"Podviianiuk, R."'

1. 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

2. First Measurement of the Nuclear-Recoil Ionization Yield in Silicon at 100 eV.

Author

Albakry MF, Alkhatib I, Alonso D, Amaral DWP, Aralis T, Aramaki T, Arnquist IJ, Ataee Langroudy I, Azadbakht E, Banik S, Bathurst C, Bhattacharyya R, Brink PL, Bunker R, Cabrera B, Calkins R, Cameron RA, Cartaro C, Cerdeño DG, Chang YY, 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 ML, Diamond MD, Elwan M, Fascione E, Figueroa-Feliciano E, Fink CW, Fouts K, Fritts M, Gerbier G, Germond R, Ghaith M, Golwala SR, Hall J, Harms SAS, Hassan N, Hines BA, Hong Z, Hoppe EW, Hsu L, Huber ME, Iyer V, Kashyap VKS, Kelsey MH, Kubik A, Kurinsky NA, Lee M, Litke M, Liu J, Liu Y, Loer B, Lopez Asamar E, Lukens P, MacFarlane DB, Mahapatra R, Mast N, Mayer AJ, Meyer Zu Theenhausen H, Michaud É, Michielin E, Mirabolfathi N, Mohanty B, Nebolsky B, Nelson J, Neog H, Novati V, Orrell JL, Osborne MD, Oser SM, Page WA, Pandey L, Pandey S, Partridge R, Pedreros DS, Perna L, Podviianiuk R, Ponce F, Poudel S, Pradeep A, Pyle M, Rau W, Reid E, Ren R, Reynolds T, Tanner E, Roberts A, Robinson AE, Saab T, Sadek D, Sadoulet B, Sahoo SP, Saikia I, Sander J, Sattari A, Schmidt B, Schnee RW, Scorza S, Serfass B, Poudel SS, Sincavage DJ, Sinervo P, Speaks Z, Street J, Sun H, Terry GD, Thasrawala FK, Toback D, Underwood R, Verma S, Villano AN, von Krosigk B, Watkins SL, Wen O, Williams Z, Wilson MJ, Winchell J, Wykoff K, Yellin S, Young BA, Yu TC, Zatschler B, Zatschler S, Zaytsev A, Zeolla A, Zhang E, Zheng L, Zheng Y, Zuniga A, An P, Barbeau PS, Hedges SC, Li L, and Runge J

Abstract

We measured the nuclear-recoil ionization yield in silicon with a cryogenic phonon-sensitive gram-scale detector. Neutrons from a monoenergetic 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
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3. 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 YY, 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, Street J, Toback D, Underwood R, Verma S, Villano AN, von Krosigk B, Watkins SL, Wilson JS, Wilson MJ, Winchell J, Wright DH, Yellin S, Young BA, Yu TC, Zhang E, Zhang HG, Zhao X, and Zheng L

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
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4. Light Dark Matter Search with a High-Resolution Athermal Phonon Detector Operated above Ground.

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, Binder T, Bowles MA, Brink PL, Bunker R, Cabrera B, Calkins R, Cameron RA, Cartaro C, Cerdeño DG, Chang YY, 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, Herbert N, 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, MacDonell D, 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, Pakarha P, Partridge R, Podviianiuk R, Ponce F, Poudel S, 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, Street J, Toback D, Underwood R, Verma S, Villano AN, von Krosigk B, Watkins SL, Wills L, Wilson JS, Wilson MJ, Winchell J, Wright DH, Yellin S, Young BA, Yu TC, Zhang E, Zhang HG, Zhao X, Zheng L, Camilleri J, Kolomensky YG, and Zuber S

Abstract

We present limits on spin-independent dark matter-nucleon interactions using a 10.6 g Si athermal phonon detector with a baseline energy resolution of σ_{E}=3.86±0.04(stat)_{-0.00}^{+0.19}(syst)  eV. This exclusion analysis sets the most stringent dark matter-nucleon scattering cross-section limits achieved by a cryogenic detector for dark matter particle masses from 93 to 140  MeV/c^{2}, with a raw exposure of 9.9 g d acquired at an above-ground facility. This work illustrates the scientific potential of detectors with athermal phonon sensors with eV-scale energy resolution for future dark matter searches.

Published
2021
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5. Light Dark Matter Search with Ionization Signals in XENON1T.

Author

Aprile E, Aalbers J, Agostini F, Alfonsi M, Althueser L, Amaro FD, Antochi VC, Angelino E, Arneodo F, Barge D, Baudis L, Bauermeister B, Bellagamba L, Benabderrahmane ML, Berger T, Breur PA, Brown A, Brown E, Bruenner S, Bruno G, Budnik R, Capelli C, Cardoso JMR, Cichon D, Coderre D, Colijn AP, Conrad J, Cussonneau JP, Decowski MP, de Perio P, Depoian A, Di Gangi P, Di Giovanni A, Diglio S, Elykov A, Eurin G, Fei J, Ferella AD, Fieguth A, Fulgione W, Gaemers P, Gallo Rosso A, Galloway M, Gao F, Garbini M, Grandi L, Greene Z, Hasterok C, Hils C, Hogenbirk E, Howlett J, Iacovacci M, Itay R, Joerg F, Kazama S, Kish A, Kobayashi M, Koltman G, Kopec A, Landsman H, Lang RF, Levinson L, Lin Q, Lindemann S, Lindner M, Lombardi F, Lopes JAM, López Fune E, Macolino C, Mahlstedt J, Manfredini A, Marignetti F, Marrodán Undagoitia T, Masbou J, Mastroianni S, Messina M, Micheneau K, Miller K, Molinario A, Morå K, Mosbacher Y, Murra M, Naganoma J, Ni K, Oberlack U, Odgers K, Palacio J, Pelssers B, Peres R, Pienaar J, Pizzella V, Plante G, Podviianiuk R, Qin J, Qiu H, Ramírez García D, Reichard S, Riedel B, Rocchetti A, Rupp N, Dos Santos JMF, Sartorelli G, Šarčević N, Scheibelhut M, Schindler S, Schreiner J, Schulte D, Schumann M, Scotto Lavina L, Selvi M, Shagin P, Shockley E, Silva M, Simgen H, Therreau C, Thers D, Toschi F, Trinchero G, Tunnell C, Upole N, Vargas M, Volta G, Wack O, Wang H, Wei Y, Weinheimer C, Wenz D, Wittweg C, Wulf J, Ye J, Zhang Y, Zhu T, and Zopounidis JP

Abstract

We report constraints on light dark matter (DM) models using ionization signals in the XENON1T experiment. We mitigate backgrounds with strong event selections, rather than requiring a scintillation signal, leaving an effective exposure of (22±3) tonne day. Above ∼0.4  keV&#95;{ee}, we observe <1  event/(tonne day keV&#95;{ee}), which is more than 1000 times lower than in similar searches with other detectors. Despite observing a higher rate at lower energies, no DM or CEvNS detection may be claimed because we cannot model all of our backgrounds. We thus exclude new regions in the parameter spaces for DM-nucleus scattering for DM masses m&#95;{χ} within 3-6  GeV/c^{2}, DM-electron scattering for m&#95;{χ}>30  MeV/c^{2}, and absorption of dark photons and axionlike particles for m&#95;{χ} within 0.186-1  keV/c^{2}.

Published
2019
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6. Search for Light Dark Matter Interactions Enhanced by the Migdal Effect or Bremsstrahlung in XENON1T.

Author

Aprile E, Aalbers J, Agostini F, Alfonsi M, Althueser L, Amaro FD, Antochi VC, Angelino E, Arneodo F, Barge D, Baudis L, Bauermeister B, Bellagamba L, Benabderrahmane ML, Berger T, Breur PA, Brown A, Brown E, Bruenner S, Bruno G, Budnik R, Capelli C, Cardoso JMR, Cichon D, Coderre D, Colijn AP, Conrad J, Cussonneau JP, Decowski MP, de Perio P, Depoian A, Di Gangi P, Di Giovanni A, Diglio S, Elykov A, Eurin G, Fei J, Ferella AD, Fieguth A, Fulgione W, Gaemers P, Gallo Rosso A, Galloway M, Gao F, Garbini M, Grandi L, Greene Z, Hasterok C, Hils C, Hogenbirk E, Howlett J, Iacovacci M, Itay R, Joerg F, Kazama S, Kish A, Kobayashi M, Koltman G, Kopec A, Landsman H, Lang RF, Levinson L, Lin Q, Lindemann S, Lindner M, Lombardi F, Lopes JAM, López Fune E, Macolino C, Mahlstedt J, Manenti M, Manfredini A, Marignetti F, Marrodán Undagoitia T, Masbou J, Mastroianni S, Messina M, Micheneau K, Miller K, Molinario A, Morå K, Mosbacher Y, Murra M, Naganoma J, Ni K, Oberlack U, Odgers K, Palacio J, Pelssers B, Peres R, Pienaar J, Pizzella V, Plante G, Podviianiuk R, Qin J, Qiu H, Ramírez García D, Reichard S, Riedel B, Rocchetti A, Rupp N, Dos Santos JMF, Sartorelli G, Šarčević N, Scheibelhut M, Schindler S, Schreiner J, Schulte D, Schumann M, Scotto Lavina L, Selvi M, Shagin P, Shockley E, Silva M, Simgen H, Therreau C, Thers D, Toschi F, Trinchero G, Tunnell C, Upole N, Vargas M, Volta G, Wack O, Wang H, Wei Y, Weinheimer C, Wenz D, Wittweg C, Wulf J, Ye J, Zhang Y, Zhu T, and Zopounidis JP

Abstract

Direct dark matter detection experiments based on a liquid xenon target are leading the search for dark matter particles with masses above ∼5  GeV/c^{2}, but have limited sensitivity to lighter masses because of the small momentum transfer in dark matter-nucleus elastic scattering. However, there is an irreducible contribution from inelastic processes accompanying the elastic scattering, which leads to the excitation and ionization of the recoiling atom (the Migdal effect) or the emission of a bremsstrahlung photon. In this Letter, we report on a probe of low-mass dark matter with masses down to about 85  MeV/c^{2} by looking for electronic recoils induced by the Migdal effect and bremsstrahlung using data from the XENON1T experiment. Besides the approach of detecting both scintillation and ionization signals, we exploit an approach that uses ionization signals only, which allows for a lower detection threshold. This analysis significantly enhances the sensitivity of XENON1T to light dark matter previously beyond its reach.

Published
2019
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7. Constraining the Spin-Dependent WIMP-Nucleon Cross Sections with XENON1T.

Author

Aprile E, Aalbers J, Agostini F, Alfonsi M, Althueser L, Amaro FD, Anthony M, Antochi VC, Arneodo F, Baudis L, Bauermeister B, Benabderrahmane ML, Berger T, Breur PA, Brown A, Brown A, Brown E, Bruenner S, Bruno G, Budnik R, Capelli C, Cardoso JMR, Cichon D, Coderre D, Colijn AP, Conrad J, Cussonneau JP, Decowski MP, de Perio P, Di Gangi P, Di Giovanni A, Diglio S, Elykov A, Eurin G, Fei J, Ferella AD, Fieguth A, Fulgione W, Gallo Rosso A, Galloway M, Gao F, Garbini M, Grandi L, Greene Z, Hasterok C, Hogenbirk E, Howlett J, Iacovacci M, Itay R, Joerg F, Kazama S, Kish A, Koltman G, Kopec A, Landsman H, Lang RF, Levinson L, Lin Q, Lindemann S, Lindner M, Lombardi F, Lopes JAM, López Fune E, Macolino C, Mahlstedt J, Manfredini A, Marignetti F, Marrodán Undagoitia T, Masbou J, Masson D, Mastroianni S, Messina M, Micheneau K, Miller K, Molinario A, Morå K, Mosbacher Y, Murra M, Naganoma J, Ni K, Oberlack U, Odgers K, Pelssers B, Piastra F, Pienaar J, Pizzella V, Plante G, Podviianiuk R, Priel N, Qiu H, Ramírez García D, Reichard S, Riedel B, Rizzo A, Rocchetti A, Rupp N, Dos Santos JMF, Sartorelli G, Šarčević N, Scheibelhut M, Schindler S, Schreiner J, Schulte D, Schumann M, Scotto Lavina L, Selvi M, Shagin P, Shockley E, Silva M, Simgen H, Therreau C, Thers D, Toschi F, Trinchero G, Tunnell C, Upole N, Vargas M, Wack O, Wang H, Wang Z, Wei Y, Weinheimer C, Wenz D, Wittweg C, Wulf J, Xu Z, Ye J, Zhang Y, Zhu T, and Zopounidis JP

Abstract

We report the first experimental results on spin-dependent elastic weakly interacting massive particle (WIMP) nucleon scattering from the XENON1T dark matter search experiment. The analysis uses the full ton year exposure of XENON1T to constrain the spin-dependent proton-only and neutron-only cases. No significant signal excess is observed, and a profile likelihood ratio analysis is used to set exclusion limits on the WIMP-nucleon interactions. This includes the most stringent constraint to date on the WIMP-neutron cross section, with a minimum of 6.3×10^{-42}  cm^{2} at 30  GeV/c^{2} and 90% confidence level. The results are compared with those from collider searches and used to exclude new parameter space in an isoscalar theory with an axial-vector mediator.

Published
2019
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8. First Results on the Scalar WIMP-Pion Coupling, Using the XENON1T Experiment.

Author

Aprile E, Aalbers J, Agostini F, Alfonsi M, Althueser L, Amaro FD, Anthony M, Antochi VC, Arneodo F, Baudis L, Bauermeister B, Benabderrahmane ML, Berger T, Breur PA, Brown A, Brown A, Brown E, Bruenner S, Bruno G, Budnik R, Capelli C, Cardoso JMR, Cichon D, Coderre D, Colijn AP, Conrad J, Cussonneau JP, Decowski MP, de Perio P, Di Gangi P, Di Giovanni A, Diglio S, Elykov A, Eurin G, Fei J, Ferella AD, Fieguth A, Fulgione W, Gallo Rosso A, Galloway M, Gao F, Garbini M, Grandi L, Greene Z, Hasterok C, Hogenbirk E, Howlett J, Iacovacci M, Itay R, Joerg F, Kaminsky B, Kazama S, Kish A, Koltman G, Kopec A, Landsman H, Lang RF, Levinson L, Lin Q, Lindemann S, Lindner M, Lombardi F, Lopes JAM, López Fune E, Macolino C, Mahlstedt J, Manfredini A, Marignetti F, Marrodán Undagoitia T, Masbou J, Masson D, Mastroianni S, Messina M, Micheneau K, Miller K, Molinario A, Morå K, Murra M, Naganoma J, Ni K, Oberlack U, Odgers K, Pelssers B, Piastra F, Pienaar J, Pizzella V, Plante G, Podviianiuk R, Priel N, Qiu H, Ramírez García D, Reichard S, Riedel B, Rizzo A, Rocchetti A, Rupp N, Dos Santos JMF, Sartorelli G, Šarčević N, Scheibelhut M, Schindler S, Schreiner J, Schulte D, Schumann M, Scotto Lavina L, Selvi M, Shagin P, Shockley E, Silva M, Simgen H, Therreau C, Thers D, Toschi F, Trinchero G, Tunnell C, Upole N, Vargas M, Wack O, Wang H, Wang Z, Wei Y, Weinheimer C, Wenz D, Wittweg C, Wulf J, Ye J, Zhang Y, Zhu T, Zopounidis JP, Hoferichter M, Klos P, Menéndez J, and Schwenk A

Abstract

We present first results on the scalar coupling of weakly interacting massive particles (WIMPs) to pions from 1  t yr of exposure with the XENON1T experiment. This interaction is generated when the WIMP couples to a virtual pion exchanged between the nucleons in a nucleus. In contrast to most nonrelativistic operators, these pion-exchange currents can be coherently enhanced by the total number of nucleons and therefore may dominate in scenarios where spin-independent WIMP-nucleon interactions are suppressed. Moreover, for natural values of the couplings, they dominate over the spin-dependent channel due to their coherence in the nucleus. Using the signal model of this new WIMP-pion channel, no significant excess is found, leading to an upper limit cross section of 6.4×10^{-46}  cm^{2} (90% confidence level) at 30  GeV/c^{2} WIMP mass.

Published
2019
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9. Dark Matter Search Results from a One Ton-Year Exposure of XENON1T.

Author

Aprile E, Aalbers J, Agostini F, Alfonsi M, Althueser L, Amaro FD, Anthony M, Arneodo F, Baudis L, Bauermeister B, Benabderrahmane ML, Berger T, Breur PA, Brown A, Brown A, Brown E, Bruenner S, Bruno G, Budnik R, Capelli C, Cardoso JMR, Cichon D, Coderre D, Colijn AP, Conrad J, Cussonneau JP, Decowski MP, de Perio P, Di Gangi P, Di Giovanni A, Diglio S, Elykov A, Eurin G, Fei J, Ferella AD, Fieguth A, Fulgione W, Gallo Rosso A, Galloway M, Gao F, Garbini M, Geis C, Grandi L, Greene Z, Qiu H, Hasterok C, Hogenbirk E, Howlett J, Itay R, Joerg F, Kaminsky B, Kazama S, Kish A, Koltman G, Landsman H, Lang RF, Levinson L, Lin Q, Lindemann S, Lindner M, Lombardi F, Lopes JAM, Mahlstedt J, Manfredini A, Marrodán Undagoitia T, Masbou J, Masson D, Messina M, Micheneau K, Miller K, Molinario A, Morå K, Murra M, Naganoma J, Ni K, Oberlack U, Pelssers B, Piastra F, Pienaar J, Pizzella V, Plante G, Podviianiuk R, Priel N, Ramírez García D, Rauch L, Reichard S, Reuter C, Riedel B, Rizzo A, Rocchetti A, Rupp N, Dos Santos JMF, Sartorelli G, Scheibelhut M, Schindler S, Schreiner J, Schulte D, Schumann M, Scotto Lavina L, Selvi M, Shagin P, Shockley E, Silva M, Simgen H, Thers D, Toschi F, Trinchero G, Tunnell C, Upole N, Vargas M, Wack O, Wang H, Wang Z, Wei Y, Weinheimer C, Wittweg C, Wulf J, Ye J, Zhang Y, and Zhu T

Abstract

We report on a search for weakly interacting massive particles (WIMPs) using 278.8 days of data collected with the XENON1T experiment at LNGS. XENON1T utilizes a liquid xenon time projection chamber with a fiducial mass of (1.30±0.01)  ton, resulting in a 1.0 ton yr exposure. The energy region of interest, [1.4,10.6]  keV&#95;{ee} ([4.9,40.9] keV&#95;{nr}), exhibits an ultralow electron recoil background rate of [82&#95;{-3}^{+5}(syst)±3(stat)]  events/(ton yr keV&#95;{ee}). No significant excess over background is found, and a profile likelihood analysis parametrized in spatial and energy dimensions excludes new parameter space for the WIMP-nucleon spin-independent elastic scatter cross section for WIMP masses above 6  GeV/c^{2}, with a minimum of 4.1×10^{-47}  cm^{2} at 30  GeV/c^{2} and a 90% confidence level.

Published
2018
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10. Dark Matter Search Results from the PICO-2L C3F8 Bubble Chamber.

Author

Amole C, Ardid M, Asner DM, Baxter D, Behnke E, Bhattacharjee P, Borsodi H, Bou-Cabo M, Brice SJ, Broemmelsiek D, Clark K, Collar JI, Cooper PS, Crisler M, Dahl CE, Daley S, Das M, Debris F, Dhungana N, Farine J, Felis I, Filgas R, Fines-Neuschild M, Girard F, Giroux G, Hai M, Hall J, Harris O, Jackson CM, Jin M, Krauss CB, Lafrenière M, Laurin M, Lawson I, Levine I, Lippincott WH, Mann E, Martin JP, Maurya D, Mitra P, Neilson R, Noble AJ, Plante A, Podviianiuk RB, Priya S, Robinson AE, Ruschman M, Scallon O, Seth S, Sonnenschein A, Starinski N, Štekl I, Vázquez-Jáuregui E, Wells J, Wichoski U, Zacek V, and Zhang J

Subjects
Acoustics instrumentation, Algorithms, Neutrons, Fluorocarbons chemistry, Models, Theoretical
Abstract

New data are reported from the operation of a 2 liter C3F8 bubble chamber in the SNOLAB underground laboratory, with a total exposure of 211.5 kg days at four different energy thresholds below 10 keV. These data show that C3F8 provides excellent electron-recoil and alpha rejection capabilities at very low thresholds. The chamber exhibits an electron-recoil sensitivity of <3.5×10(-10) and an alpha rejection factor of >98.2%. These data also include the first observation of a dependence of acoustic signal on alpha energy. Twelve single nuclear recoil event candidates were observed during the run. The candidate events exhibit timing characteristics that are not consistent with the hypothesis of a uniform time distribution, and no evidence for a dark matter signal is claimed. These data provide the most sensitive direct detection constraints on WIMP-proton spin-dependent scattering to date, with significant sensitivity at low WIMP masses for spin-independent WIMP-nucleon scattering.

Published
2015
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