Dr. Kimberly Palladino: Publications

Dark Matter Search Results from 4.2 Tonne-Years of Exposure of the LUX-ZEPLIN (LZ) Experiment

Physical Review Letters American Physical Society (APS) 135:1 (2025) 011802

Authors:

J Aalbers, DS Akerib, AK Al Musalhi, F Alder, CS Amarasinghe, A Ames, TJ Anderson, N Angelides, HM Araújo, JE Armstrong, M Arthurs, A Baker, S Balashov, J Bang, JW Bargemann, EE Barillier, D Bauer, K Beattie, T Benson, A Bhatti, A Biekert, TP Biesiadzinski, HJ Birch, E Bishop, GM Blockinger, B Boxer, CAJ Brew, P Brás, S Burdin, M Buuck, MC Carmona-Benitez, M Carter, A Chawla, H Chen, JJ Cherwinka, YT Chin, NI Chott, MV Converse, R Coronel, A Cottle, G Cox, D Curran, CE Dahl, I Darlington, S Dave, A David, J Delgaudio, S Dey, L de Viveiros, L Di Felice, C Ding, JEY Dobson, E Druszkiewicz, S Dubey, SR Eriksen, A Fan, S Fayer, NM Fearon, N Fieldhouse, S Fiorucci, H Flaecher, ED Fraser, TMA Fruth, RJ Gaitskell, A Geffre, J Genovesi, C Ghag, A Ghosh, R Gibbons, S Gokhale, J Green, MGD van der Grinten, JJ Haiston, CR Hall, TJ Hall, S Han, E Hartigan-O’Connor, SJ Haselschwardt, MA Hernandez, SA Hertel, G Heuermann, GJ Homenides, M Horn, DQ Huang, D Hunt, E Jacquet, RS James, J Johnson, AC Kaboth, AC Kamaha, Meghna K K., D Khaitan, A Khazov, I Khurana, J Kim, YD Kim, J Kingston, R Kirk, D Kodroff, L Korley, EV Korolkova, H Kraus, S Kravitz, L Kreczko, VA Kudryavtsev, C Lawes, DS Leonard, KT Lesko, C Levy, J Lin, A Lindote, WH Lippincott, MI Lopes, W Lorenzon, C Lu, S Luitz, PA Majewski, A Manalaysay, RL Mannino, C Maupin, ME McCarthy, G McDowell, DN McKinsey, J McLaughlin, JB McLaughlin, R McMonigle, E Mizrachi, A Monte, ME Monzani, JD Morales Mendoza, E Morrison, BJ Mount, M Murdy, A St J Murphy, A Naylor, HN Nelson, F Neves, A Nguyen, CL O’Brien, I Olcina, KC Oliver-Mallory, J Orpwood, KY Oyulmaz, KJ Palladino, J Palmer, NJ Pannifer, N Parveen, SJ Patton, B Penning, G Pereira, E Perry, T Pershing, A Piepke, Y Qie, J Reichenbacher, CA Rhyne, A Richards, Q Riffard, GRC Rischbieter, E Ritchey, HS Riyat, R Rosero, T Rushton, D Rynders, D Santone, ABMR Sazzad, RW Schnee, G Sehr, B Shafer, S Shaw, T Shutt, JJ Silk, C Silva, G Sinev, J Siniscalco, R Smith, VN Solovov, P Sorensen, J Soria, I Stancu, A Stevens, K Stifter, B Suerfu, TJ Sumner, M Szydagis, DR Tiedt, M Timalsina, Z Tong, DR Tovey, J Tranter, M Trask, M Tripathi, A Usón, A Vacheret, AC Vaitkus, O Valentino, V Velan, A Wang, JJ Wang, Y Wang, JR Watson, L Weeldreyer, TJ Whitis, K Wild, M Williams, WJ Wisniewski, L Wolf, FLH Wolfs, S Woodford, D Woodward, CJ Wright, Q Xia, J Xu, Y Xu, M Yeh, D Yeum, W Zha, EA Zweig

Abstract:

We report results of a search for nuclear recoils induced by weakly interacting massive particle (WIMP) dark matter using the LUX-ZEPLIN (LZ) two-phase xenon time projection chamber. This analysis uses a total exposure of

4.2 \pm 0.1

tonne-years from 280 live days of LZ operation, of which

3.3 \pm 0.1

tonne-years and 220 live days are new. A technique to actively tag background electronic recoils from

{}^{214}{Pb}

β

decays is featured for the first time. Enhanced electron-ion recombination is observed in two-neutrino double electron capture decays of

{}^{124}{Xe}

, representing a noteworthy new background. After removal of artificial signal-like events injected into the dataset to mitigate analyzer bias, we find no evidence for an excess over expected backgrounds. World-leading constraints are placed on spin-independent (SI) and spin-dependent WIMP-nucleon cross sections for masses

\geq 9 GeV / c^{2}

. The strongest SI exclusion set is

2.2 \times 10^{- 48} {cm}^{2}

at the 90% confidence level and the best SI median sensitivity achieved is

5.1 \times 10^{- 48} {cm}^{2}

, both for a mass of

40 GeV / c^{2}

. Published by the American Physical Society 2025

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First Constraint on Atmospheric Millicharged Particles with the LUX-ZEPLIN Experiment

Physical Review Letters American Physical Society (APS) 134:24 (2025) 241802

Authors:

J Aalbers, DS Akerib, AK Al Musalhi, F Alder, CS Amarasinghe, A Ames, TJ Anderson, N Angelides, HM Araújo, JE Armstrong, M Arthurs, A Baker, S Balashov, J Bang, JW Bargemann, EE Barillier, D Bauer, K Beattie, T Benson, A Bhatti, A Biekert, TP Biesiadzinski, HJ Birch, E Bishop, GM Blockinger, B Boxer, CAJ Brew, P Brás, S Burdin, M Buuck, MC Carmona-Benitez, M Carter, A Chawla, H Chen, JJ Cherwinka, YT Chin, NI Chott, MV Converse, R Coronel, A Cottle, G Cox, D Curran, CE Dahl, I Darlington, S Dave, A David, J Delgaudio, S Dey, L de Viveiros, L Di Felice, C Ding, JEY Dobson, E Druszkiewicz, S Dubey, SR Eriksen, A Fan, S Fayer, NM Fearon, N Fieldhouse, S Fiorucci, H Flaecher, ED Fraser, TMA Fruth, RJ Gaitskell, A Geffre, J Genovesi, C Ghag, A Ghosh, R Gibbons, S Gokhale, J Green, MGD van der Grinten, JJ Haiston, CR Hall, TJ Hall, S Han, E Hartigan-O’Connor, SJ Haselschwardt, MA Hernandez, SA Hertel, G Heuermann, GJ Homenides, M Horn, DQ Huang, D Hunt, E Jacquet, RS James, J Johnson, AC Kaboth, AC Kamaha, M Kannichankandy, D Khaitan, A Khazov, I Khurana, J Kim, YD Kim, J Kingston, R Kirk, D Kodroff, L Korley, EV Korolkova, H Kraus, S Kravitz, L Kreczko, VA Kudryavtsev, C Lawes, DS Leonard, KT Lesko, C Levy, J Lin, A Lindote, WH Lippincott, MI Lopes, W Lorenzon, C Lu, S Luitz, PA Majewski, A Manalaysay, RL Mannino, C Maupin, ME McCarthy, G McDowell, DN McKinsey, J McLaughlin, JB McLaughlin, R McMonigle, E Mizrachi, A Monte, ME Monzani, JD Morales Mendoza, E Morrison, BJ Mount, M Murdy, A St J Murphy, A Naylor, HN Nelson, F Neves, A Nguyen, CL O’Brien, I Olcina, KC Oliver-Mallory, J Orpwood, KY Oyulmaz, KJ Palladino, J Palmer, NJ Pannifer, N Parveen, SJ Patton, B Penning, G Pereira, E Perry, T Pershing, A Piepke, Y Qie, J Reichenbacher, CA Rhyne, A Richards, Q Riffard, GRC Rischbieter, E Ritchey, HS Riyat, R Rosero, T Rushton, D Rynders, D Santone, ABMR Sazzad, RW Schnee, G Sehr, B Shafer, S Shaw, T Shutt, JJ Silk, C Silva, G Sinev, J Siniscalco, R Smith, VN Solovov, P Sorensen, J Soria, I Stancu, A Stevens, K Stifter, B Suerfu, TJ Sumner, M Szydagis, DR Tiedt, M Timalsina, Z Tong, DR Tovey, J Tranter, M Trask, M Tripathi, A Usón, A Vacheret, AC Vaitkus, O Valentino, V Velan, A Wang, JJ Wang, Y Wang, JR Watson, L Weeldreyer, TJ Whitis, K Wild, M Williams, WJ Wisniewski, L Wolf, FLH Wolfs, S Woodford, D Woodward, CJ Wright, Q Xia, J Xu, Y Xu, M Yeh, D Yeum, W Zha, H Zhang, EA Zweig

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Neutrinoless double beta decay sensitivity of the XLZD rare event observatory

Journal of Physics G: Nuclear and Particle Physics IOP Publishing 52:4 (2025) 045102

Authors:

J Aalbers, K Abe, M Adrover, S Ahmed Maouloud, DS Akerib, AK Al Musalhi, F Alder, L Althueser, DWP Amaral, CS Amarasinghe, A Ames, B Andrieu, N Angelides, E Angelino, B Antunovic, E Aprile, HM Araújo, JE Armstrong, M Arthurs, M Babicz, A Baker, M Balzer, J Bang, E Barberio

Abstract:

The XLZD collaboration is developing a two-phase xenon time projection chamber with an active mass of 60–80 t capable of probing the remaining weakly interacting massive particle-nucleon interaction parameter space down to the so-called neutrino fog. In this work we show that, based on the performance of currently operating detectors using the same technology and a realistic reduction of radioactivity in detector materials, such an experiment will also be able to competitively search for neutrinoless double beta decay in 136Xe using a natural-abundance xenon target. XLZD can reach a 3σ discovery potential half-life of 5.7 × 1027 years (and a 90% CL exclusion of 1.3 × 1028 years) with 10 years of data taking, corresponding to a Majorana mass range of 7.3–31.3 meV (4.8–20.5 meV). XLZD will thus exclude the inverted neutrino mass ordering parameter space and will start to probe the normal ordering region for most of the nuclear matrix elements commonly considered by the community.

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Nuclear Recoil Calibration at Sub-keV Energies in LUX and Its Impact on Dark Matter Search Sensitivity

Physical Review Letters American Physical Society (APS) 134:6 (2025) 061002

Authors:

DS Akerib, S Alsum, HM Araújo, X Bai, J Balajthy, J Bang, A Baxter, EP Bernard, A Bernstein, TP Biesiadzinski, EM Boulton, B Boxer, P Brás, S Burdin, D Byram, MC Carmona-Benitez, C Chan, JE Cutter, L de Viveiros, E Druszkiewicz, A Fan, S Fiorucci, RJ Gaitskell, C Ghag, MGD Gilchriese, C Gwilliam, CR Hall, SJ Haselschwardt, SA Hertel, DP Hogan, M Horn, DQ Huang, CM Ignarra, RG Jacobsen, O Jahangir, W Ji, K Kamdin, K Kazkaz, D Khaitan, EV Korolkova, S Kravitz, VA Kudryavtsev, E Leason, KT Lesko, J Liao, J Lin, A Lindote, MI Lopes, A Manalaysay, RL Mannino, N Marangou, DN McKinsey, D-M Mei, JA Morad, A St J Murphy, A Naylor, C Nehrkorn, HN Nelson, F Neves, A Nilima, KC Oliver-Mallory, KJ Palladino, C Rhyne, Q Riffard, GRC Rischbieter, P Rossiter, S Shaw, TA Shutt, C Silva, M Solmaz, VN Solovov, P Sorensen, TJ Sumner, N Swanson, M Szydagis, DJ Taylor, R Taylor, WC Taylor, BP Tennyson, PA Terman, DR Tiedt, WH To, L Tvrznikova, U Utku, A Vacheret, A Vaitkus, V Velan, RC Webb, JT White, TJ Whitis, MS Witherell, FLH Wolfs, D Woodward, X Xiang, J Xu, C Zhang

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Two-neutrino double electron capture of 124Xe in the first LUX-ZEPLIN exposure

Journal of Physics G Nuclear and Particle Physics IOP Publishing 52:1 (2025) 015103

Authors:

J Aalbers, DS Akerib, AK Al Musalhi, F Alder, CS Amarasinghe, A Ames, TJ Anderson, N Angelides, HM Araújo, JE Armstrong, M Arthurs, A Baker, S Balashov, J Bang, JW Bargemann, EE Barillier, K Beattie, A Bhatti, A Biekert, TP Biesiadzinski, HJ Birch, E Bishop, GM Blockinger, B Boxer, CAJ Brew, P Brás, S Burdin, M Buuck, MC Carmona-Benitez, M Carter, A Chawla, H Chen, YT Chin, NI Chott, MV Converse, R Coronel, A Cottle, G Cox, D Curran, CE Dahl, A David, J Delgaudio, S Dey, L de Viveiros, L Di Felice, C Ding, JEY Dobson, E Druszkiewicz, S Dubey, SR Eriksen, A Fan, NM Fearon, N Fieldhouse, S Fiorucci, H Flaecher, ED Fraser, TMA Fruth, RJ Gaitskell, A Geffre, J Genovesi, C Ghag, R Gibbons, S Gokhale, J Green, MGD van der Grinten, JJ Haiston, CR Hall, S Han, E Hartigan-OConnor, SJ Haselschwardt, MA Hernandez, SA Hertel, G Heuermann, GJ Homenides, M Horn, DQ Huang, D Hunt, E Jacquet, RS James, J Johnson, AC Kaboth, AC Kamaha, M Kannichankandy, D Khaitan, A Khazov, I Khurana, J Kim, YD Kim, J Kingston, R Kirk, D Kodroff, L Korley, EV Korolkova, H Kraus, S Kravitz, L Kreczko, VA Kudryavtsev, DS Leonard, KT Lesko, C Levy, J Lin, A Lindote, WH Lippincott, MI Lopes, W Lorenzon, C Lu, S Luitz, PA Majewski, A Manalaysay, RL Mannino, C Maupin, ME McCarthy, G McDowell, DN McKinsey, J McLaughlin, JB McLaughlin, R McMonigle, E Mizrachi, A Monte, ME Monzani, E Morrison, BJ Mount, M Murdy, ASJ Murphy, A Naylor, HN Nelson, F Neves, A Nguyen, CL O’Brien, I Olcina, KC Oliver-Mallory, J Orpwood, KY Oyulmaz, KJ Palladino, J Palmer, NJ Pannifer, N Parveen, SJ Patton, B Penning, G Pereira, E Perry, T Pershing, A Piepke, Y Qie, J Reichenbacher, CA Rhyne, Q Riffard, GRC Rischbieter, E Ritchey, HS Riyat, R Rosero, T Rushton, D Rynders, D Santone, ABMR Sazzad, RW Schnee, G Sehr, B Shafer, S Shaw, T Shutt, JJ Silk, C Silva, G Sinev, J Siniscalco, R Smith, VN Solovov, P Sorensen, J Soria, A Stevens, K Stifter, B Suerfu, TJ Sumner, M Szydagis, DR Tiedt, M Timalsina, Z Tong, DR Tovey, J Tranter, M Trask, M Tripathi, A Vacheret, AC Vaitkus, O Valentino, V Velan, A Wang, JJ Wang, Y Wang, JR Watson, L Weeldreyer, TJ Whitis, K Wild, M Williams, WJ Wisniewski, L Wolf, FLH Wolfs, S Woodford, D Woodward, CJ Wright, Q Xia, J Xu, Y Xu, M Yeh, D Yeum, W Zha, EA Zweig

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Dr. Kimberly Palladino

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Dark Matter Search Results from 4.2 Tonne-Years of Exposure of the LUX-ZEPLIN (LZ) Experiment

Authors:

Abstract:

First Constraint on Atmospheric Millicharged Particles with the LUX-ZEPLIN Experiment

Authors:

Neutrinoless double beta decay sensitivity of the XLZD rare event observatory

Authors:

Abstract:

Nuclear Recoil Calibration at Sub-keV Energies in LUX and Its Impact on Dark Matter Search Sensitivity

Authors:

Two-neutrino double electron capture of 124Xe in the first LUX-ZEPLIN exposure

Authors:

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Dr. Kimberly Palladino

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Dark Matter Search Results from 4.2 Tonne-Years of Exposure of the LUX-ZEPLIN (LZ) Experiment

Authors:

Abstract:

First Constraint on Atmospheric Millicharged Particles with the LUX-ZEPLIN Experiment

Authors:

Neutrinoless double beta decay sensitivity of the XLZD rare event observatory

Authors:

Abstract:

Nuclear Recoil Calibration at Sub-keV Energies in LUX and Its Impact on Dark Matter Search Sensitivity

Authors:

Two-neutrino double electron capture of 124Xe in the first LUX-ZEPLIN exposure

Authors: