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Author

Pengwei Xie

Bio: Pengwei Xie is an academic researcher from Shanghai Jiao Tong University. The author has contributed to research in topics: Dark matter & PandaX. The author has an hindex of 16, co-authored 47 publications receiving 2727 citations.
Topics: Dark matter, PandaX, Physics, Xenon, WIMP

Papers published on a yearly basis

Papers
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Journal ArticleDOI
TL;DR: A new search for weakly interacting massive particles (WIMPs) using the combined low background data sets acquired in 2016 and 2017 from the PandaX-II experiment in China finds no excess events above the expected background.
Abstract: We report a new search for weakly interacting massive particles (WIMPs) using the combined low background data sets acquired in 2016 and 2017 from the PandaX-II experiment in China. The latest data set contains a new exposure of 77.1 live days, with the background reduced to a level of 0.8×10^{-3} evt/kg/day, improved by a factor of 2.5 in comparison to the previous run in 2016. No excess events are found above the expected background. With a total exposure of 5.4×10^{4} kg day, the most stringent upper limit on the spin-independent WIMP-nucleon cross section is set for a WIMP with mass larger than 100 GeV/c^{2}, with the lowest 90% C.L. exclusion at 8.6×10^{-47} cm^{2} at 40 GeV/c^{2}.

1,023 citations

Journal ArticleDOI
TL;DR: The weakly interacting massive particle (WIMP) dark matter search results are reported using the first physics-run data of the PandaX-II 500 kg liquid xenon dual-phase time-projection chamber, operating at the China JinPing underground laboratory.
Abstract: We report the weakly interacting massive particle (WIMP) dark matter search results using the first physics-run data of the PandaX-II 500 kg liquid xenon dual-phase time-projection chamber, operating at the China JinPing underground laboratory. No dark matter candidate is identified above background. In combination with the data set during the commissioning run, with a total exposure of 3.3×10^{4} kg day, the most stringent limit to the spin-independent interaction between the ordinary and WIMP dark matter is set for a range of dark matter mass between 5 and 1000 GeV/c^{2}. The best upper limit on the scattering cross section is found 2.5×10^{-46} cm^{2} for the WIMP mass 40 GeV/c^{2} at 90% confidence level.

679 citations

Journal ArticleDOI
TL;DR: In this article, a simulation study of the expected background in PandaX-4T is presented, where the authors show that in a 2.8-ton fiducial mass and the signal region between 1-10 keV electron equivalent energy, the total electron recoil background is found to be$\\rm~4.9\\times~10-5}kg^{-1}d^{- 1}keV
Abstract: The PandaX-4T experiment, a 4-ton scale dark matter direct detection experiment, is being planned at the China Jinping Underground Laboratory. In this paper we present a simulation study of the expected background in this experiment. In a 2.8-ton fiducial mass and the signal region between 1-10 keV electron equivalent energy, the total electron recoil background is found to be$\\rm~4.9\\times~10^{-5}kg^{-1}d^{-1}keV^{-1}$. The nuclear recoil background in the same region is $\\rm~2.8\\times~10^{-7}kg^{-1}d^{-1}keV^{-1}$. With an exposure of 5.6 ton-years, the sensitivity of PandaX-4T could reach a minimum spin-independent dark matter-nucleon cross section of $\\rm~6\\times~10^{-48}cm^2$ at a dark matter mass of 40 GeV/$c^2$.

176 citations

Journal ArticleDOI
TL;DR: New constraints are presented on the spin-dependent weakly-interacting-massive-particle–- (WIMP-)nucleon interaction from the PandaX-II experiment, using a data set corresponding to a total exposure of 3.3×10^{4} kg day.
Abstract: New constraints are presented on the spin-dependent weakly-interacting-massive-particle–- (WIMP-)nucleon interaction from the PandaX-II experiment, using a data set corresponding to a total exposure of 3.3×10^{4} kg day. Assuming a standard axial-vector spin-dependent WIMP interaction with ^{129}Xe and ^{131}Xe nuclei, the most stringent upper limits on WIMP-neutron cross sections for WIMPs with masses above 10 GeV/c^{2} are set in all dark matter direct detection experiments. The minimum upper limit of 4.1×10^{-41} cm^{2} at 90% confidence level is obtained for a WIMP mass of 40 GeV/c^{2}. This represents more than a factor of 2 improvement on the best available limits at this and higher masses. These improved cross-section limits provide more stringent constraints on the effective WIMP-proton and WIMP-neutron couplings.

162 citations

Journal ArticleDOI
TL;DR: PandaX is a large liquid-xenon detector experiment usable for direct dark-matter detection and 136Xe double-beta decay search as mentioned in this paper, which was designed to accommodate a staged target volume increase from initially 120 kg (stage I) to 0.5 t (stage II).
Abstract: PandaX is a large liquid-xenon detector experiment usable for direct dark-matter detection and 136Xe double-beta decay search. The central vessel was designed to accommodate a staged target volume increase from initially 120 kg (stage I) to 0.5 t (stage II) and eventually to a multi-ton scale. The experiment is located in the Jinping Deep-Underground Laboratory in Sichuan, China. The detector operates in dual-phase mode, allowing detection of both prompt scintillation, and ionization charge through proportional scintillation. In this paper a detailed description of the stage I detector design and performance as well as results established during the commissioning phase are presented.

139 citations


Cited by
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Journal ArticleDOI
Elena Aprile1, Jelle Aalbers2, F. Agostini3, M. Alfonsi4, L. Althueser5, F. D. Amaro6, M. Anthony1, F. Arneodo7, Laura Baudis8, Boris Bauermeister9, M. L. Benabderrahmane7, T. Berger10, P. A. Breur2, April S. Brown2, Ethan Brown10, S. Bruenner11, Giacomo Bruno7, Ran Budnik12, C. Capelli8, João Cardoso6, D. Cichon11, D. Coderre13, Auke-Pieter Colijn2, Jan Conrad9, Jean-Pierre Cussonneau14, M. P. Decowski2, P. de Perio1, P. Di Gangi3, A. Di Giovanni7, Sara Diglio14, A. Elykov13, G. Eurin11, J. Fei15, A. D. Ferella9, A. Fieguth5, W. Fulgione, A. Gallo Rosso, Michelle Galloway8, F. Gao1, M. Garbini3, C. Geis4, L. Grandi16, Z. Greene1, H. Qiu12, C. Hasterok11, E. Hogenbirk2, J. Howlett1, R. Itay12, F. Joerg11, B. Kaminsky13, Shingo Kazama8, A. Kish8, G. Koltman12, H. Landsman12, R. F. Lang17, L. Levinson12, Qing Lin1, Sebastian Lindemann13, Manfred Lindner11, F. Lombardi15, J. A. M. Lopes6, J. Mahlstedt9, A. Manfredini12, T. Marrodán Undagoitia11, Julien Masbou14, D. Masson17, M. Messina7, K. Micheneau14, Kate C. Miller16, A. Molinario, K. Morå9, M. Murra5, J. Naganoma18, Kaixuan Ni15, Uwe Oberlack4, Bart Pelssers9, F. Piastra8, J. Pienaar16, V. Pizzella11, Guillaume Plante1, R. Podviianiuk, N. Priel12, D. Ramírez García13, L. Rauch11, S. Reichard8, C. Reuter17, B. Riedel16, A. Rizzo1, A. Rocchetti13, N. Rupp11, J.M.F. dos Santos6, Gabriella Sartorelli3, M. Scheibelhut4, S. Schindler4, J. Schreiner11, D. Schulte5, Marc Schumann13, L. Scotto Lavina19, M. Selvi3, P. Shagin18, E. Shockley16, Manuel Gameiro da Silva6, H. Simgen11, Dominique Thers14, F. Toschi13, F. Toschi3, Gian Carlo Trinchero, C. Tunnell16, N. Upole16, M. Vargas5, O. Wack11, Hongwei Wang20, Zirui Wang, Yuehuan Wei15, Ch. Weinheimer5, C. Wittweg5, J. Wulf8, J. Ye15, Yanxi Zhang1, T. Zhu1 
TL;DR: In this article, a search for weakly interacting massive particles (WIMPs) using 278.8 days of data collected with the XENON1T experiment at LNGS is reported.
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] keVee ([4.9,40.9] keVnr), exhibits an ultralow electron recoil background rate of [82-3+5(syst)±3(stat)] events/(ton yr keVee). 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/c2, with a minimum of 4.1×10-47 cm2 at 30 GeV/c2 and a 90% confidence level.

1,808 citations

Journal ArticleDOI
Elena Aprile1, Jelle Aalbers2, F. Agostini, M. Alfonsi3, F. D. Amaro4, M. Anthony1, F. Arneodo5, P. Barrow6, Laura Baudis6, Boris Bauermeister7, M. L. Benabderrahmane5, T. Berger8, P. A. Breur2, April S. Brown2, Ethan Brown8, S. Bruenner9, Giacomo Bruno, Ran Budnik10, L. Bütikofer11, J. Calvén7, João Cardoso4, M. Cervantes12, D. Cichon9, D. Coderre11, Auke-Pieter Colijn2, Jan Conrad7, Jean-Pierre Cussonneau13, M. P. Decowski2, P. de Perio1, P. Di Gangi14, A. Di Giovanni5, Sara Diglio13, G. Eurin9, J. Fei15, A. D. Ferella7, A. Fieguth16, W. Fulgione, A. Gallo Rosso, Michelle Galloway6, F. Gao1, M. Garbini14, Robert Gardner17, C. Geis3, Luke Goetzke1, L. Grandi17, Z. Greene1, C. Grignon3, C. Hasterok9, E. Hogenbirk2, J. Howlett1, R. Itay10, B. Kaminsky11, Shingo Kazama6, G. Kessler6, A. Kish6, H. Landsman10, R. F. Lang12, D. Lellouch10, L. Levinson10, Qing Lin1, Sebastian Lindemann9, Manfred Lindner9, F. Lombardi15, J. A. M. Lopes4, A. Manfredini10, I. Mariș5, T. Marrodán Undagoitia9, Julien Masbou13, F. V. Massoli14, D. Masson12, D. Mayani6, M. Messina1, K. Micheneau13, A. Molinario, K. Morâ7, M. Murra16, J. Naganoma18, Kaixuan Ni15, Uwe Oberlack3, P. Pakarha6, Bart Pelssers7, R. Persiani13, F. Piastra6, J. Pienaar12, V. Pizzella9, M.-C. Piro8, Guillaume Plante1, N. Priel10, L. Rauch9, S. Reichard6, C. Reuter12, B. Riedel17, A. Rizzo1, S. Rosendahl16, N. Rupp9, R. Saldanha17, J.M.F. dos Santos4, Gabriella Sartorelli14, M. Scheibelhut3, S. Schindler3, J. Schreiner9, Marc Schumann11, L. Scotto Lavina19, M. Selvi14, P. Shagin18, E. Shockley17, Manuel Gameiro da Silva4, H. Simgen9, M. V. Sivers11, A. Stein20, S. Thapa17, Dominique Thers13, A. Tiseni2, Gian Carlo Trinchero, C. Tunnell17, M. Vargas16, N. Upole17, Hui Wang20, Zirui Wang, Yuehuan Wei6, Ch. Weinheimer16, J. Wulf6, J. Ye15, Yanxi Zhang1, T. Zhu1 
TL;DR: The first dark matter search results from XENON1T, a ∼2000-kg-target-mass dual-phase (liquid-gas) xenon time projection chamber in operation at the Laboratori Nazionali del Gran Sasso in Italy, are reported and a profile likelihood analysis shows that the data are consistent with the background-only hypothesis.
Abstract: We report the first dark matter search results from XENON1T, a ∼2000-kg-target-mass dual-phase (liquid-gas) xenon time projection chamber in operation at the Laboratori Nazionali del Gran Sasso in Italy and the first ton-scale detector of this kind The blinded search used 342 live days of data acquired between November 2016 and January 2017 Inside the (1042±12)-kg fiducial mass and in the [5,40] keVnr energy range of interest for weakly interacting massive particle (WIMP) dark matter searches, the electronic recoil background was (193±025)×10-4 events/(kg×day×keVee), the lowest ever achieved in such a dark matter detector A profile likelihood analysis shows that the data are consistent with the background-only hypothesis We derive the most stringent exclusion limits on the spin-independent WIMP-nucleon interaction cross section for WIMP masses above 10 GeV/c2, with a minimum of 77×10-47 cm2 for 35-GeV/c2 WIMPs at 90% CL

1,061 citations

Journal ArticleDOI
TL;DR: A review of the WIMP paradigm with focus on a few models which can be probed at best by these facilities, and Collider and Indirect Detection will not be neglected when they represent a complementary probe.
Abstract: Weakly Interacting Massive Particles (WIMPs) are among the best-motivated dark matter candidates. No conclusive signal, despite an extensive search program that combines, often in a complementary way, direct, indirect, and collider probes, has been detected so far. This situation might change in near future due to the advent of one/multi-TON Direct Detection experiments. We thus, find it timely to provide a review of the WIMP paradigm with focus on a few models which can be probed at best by these facilities. Collider and Indirect Detection, nevertheless, will not be neglected when they represent a complementary probe.

772 citations

Journal ArticleDOI
Elena Aprile1, Jelle Aalbers2, F. Agostini3, M. Alfonsi4, F. D. Amaro5, M. Anthony1, Lior Arazi6, F. Arneodo7, C. Balan5, P. Barrow8, Laura Baudis8, Boris Bauermeister9, Boris Bauermeister4, T. Berger10, P. A. Breur2, Amos Breskin6, April S. Brown2, Ethan Brown10, S. Bruenner11, Giacomo Bruno12, Ran Budnik6, L. Bütikofer13, João Cardoso5, M. Cervantes14, D. Cichon11, D. Coderre13, Auke-Pieter Colijn2, Jan Conrad9, H. Contreras1, Jean-Pierre Cussonneau15, M. P. Decowski2, P. de Perio1, P. Di Gangi3, A. Di Giovanni7, E. Duchovni6, S. Fattori4, A. D. Ferella9, A. Fieguth12, D. Franco8, W. Fulgione, Michelle Galloway8, M. Garbini3, C. Geis4, Luke Goetzke1, Z. Greene1, C. Grignon4, E. K. U. Gross6, W. Hampel11, C. Hasterok11, R. Itay6, Florian Kaether11, B. Kaminsky13, G. Kessler8, A. Kish8, H. Landsman6, R. F. Lang14, D. Lellouch6, L. Levinson6, M. Le Calloch15, C. Levy10, Sebastian Lindemann11, Manfred Lindner11, J. A. M. Lopes5, A. Lyashenko16, S. Macmullin14, A. Manfredini6, T. Marrodán Undagoitia11, Julien Masbou15, F. V. Massoli3, D. Mayani8, A. J. Melgarejo Fernandez1, Y. Meng16, M. Messina1, K. Micheneau15, B. Miguez, A. Molinario, M. Murra12, J. Naganoma17, Uwe Oberlack4, S. E. A. Orrigo5, P. Pakarha8, Bart Pelssers9, R. Persiani15, F. Piastra8, J. Pienaar14, Guillaume Plante1, N. Priel6, L. Rauch11, S. Reichard14, C. Reuter14, A. Rizzo1, S. Rosendahl12, N. Rupp11, J.M.F. dos Santos5, Gabriella Sartorelli3, M. Scheibelhut4, S. Schindler4, Jochen Schreiner11, Marc Schumann13, L. Scotto Lavina15, M. Selvi3, P. Shagin17, Hardy Simgen11, A. Stein16, D. Thers15, A. Tiseni2, G. C. Trinchero, C. Tunnell2, M. von Sivers13, R. Wall17, Hui Wang16, M. Weber1, Yuehuan Wei8, Ch. Weinheimer12, J. Wulf8, Yanxi Zhang1 
TL;DR: In this article, the expected sensitivity of the Xenon1T experiment to the spin-independent WIMP-nucleon interaction cross section was investigated based on Monte Carlo predictions of the electronic and nuclear recoil backgrounds.
Abstract: The XENON1T experiment is currently in the commissioning phase at the Laboratori Nazionali del Gran Sasso, Italy. In this article we study the experiment's expected sensitivity to the spin-independent WIMP-nucleon interaction cross section, based on Monte Carlo predictions of the electronic and nuclear recoil backgrounds. The total electronic recoil background in 1 tonne fiducial volume and (1, 12) keV electronic recoil equivalent energy region, before applying any selection to discriminate between electronic and nuclear recoils, is (1.80 ± 0.15) · 10(−)(4) (kg·day·keV)(−)(1), mainly due to the decay of (222)Rn daughters inside the xenon target. The nuclear recoil background in the corresponding nuclear recoil equivalent energy region (4, 50) keV, is composed of (0.6 ± 0.1) (t·y)(−)(1) from radiogenic neutrons, (1.8 ± 0.3) · 10(−)(2) (t·y)(−)(1) from coherent scattering of neutrinos, and less than 0.01 (t·y)(−)(1) from muon-induced neutrons. The sensitivity of XENON1T is calculated with the Profile Likelihood Ratio method, after converting the deposited energy of electronic and nuclear recoils into the scintillation and ionization signals seen in the detector. We take into account the systematic uncertainties on the photon and electron emission model, and on the estimation of the backgrounds, treated as nuisance parameters. The main contribution comes from the relative scintillation efficiency Script L(eff), which affects both the signal from WIMPs and the nuclear recoil backgrounds. After a 2 y measurement in 1 t fiducial volume, the sensitivity reaches a minimum cross section of 1.6 · 10(−)(47) cm(2) at m(χ) = 50 GeV/c(2).

580 citations

Journal ArticleDOI
Jelle Aalbers1, F. Agostini2, M. Alfonsi3, F. D. Amaro4, Claude Amsler5, Elena Aprile6, Lior Arazi7, F. Arneodo8, P. Barrow9, Laura Baudis1, Laura Baudis9, M. L. Benabderrahmane8, T. Berger10, B. Beskers3, Amos Breskin7, P. A. Breur1, April S. Brown1, Ethan Brown10, S. Bruenner11, Giacomo Bruno, Ran Budnik7, Lukas Bütikofer5, J. Calvén12, João Cardoso4, D. Cichon11, D. Coderre5, Auke-Pieter Colijn1, Jan Conrad12, Jean-Pierre Cussonneau13, M. P. Decowski1, Sara Diglio13, Guido Drexlin14, Ehud Duchovni7, E. Erdal7, G. Eurin11, A. D. Ferella12, A. Fieguth15, W. Fulgione, A. Gallo Rosso, P. Di Gangi2, A. Di Giovanni8, Michelle Galloway9, M. Garbini2, C. Geis3, F. Glueck14, L. Grandi16, Z. Greene6, C. Grignon3, C. Hasterok11, Volker Hannen15, E. Hogenbirk1, J. Howlett6, D. Hilk14, C. Hils3, A. James9, B. Kaminsky5, Shingo Kazama9, Benjamin Kilminster9, A. Kish9, Lawrence M. Krauss17, H. Landsman7, R. F. Lang18, Qing Lin6, F. L. Linde1, Sebastian Lindemann11, Manfred Lindner11, J. A. M. Lopes4, Marrodan T. Undagoitia11, Julien Masbou13, F. V. Massoli2, D. Mayani9, M. Messina6, K. Micheneau13, A. Molinario, K. Morå12, E. Morteau13, M. Murra15, J. Naganoma19, Jayden L. Newstead17, Kaixuan Ni20, Uwe Oberlack3, P. Pakarha9, Bart Pelssers12, P. de Perio6, R. Persiani13, F. Piastra9, M.-C. Piro10, G. Plante6, L. Rauch11, S. Reichard18, A. Rizzo6, N. Rupp11, J.M.F. dos Santos4, G. Sartorelli2, M. Scheibelhut3, S. Schindler3, Marc Schumann5, Marc Schumann21, Jochen Schreiner11, L. Scotto Lavina13, M. Selvi2, P. Shagin19, Miguel Silva4, Hardy Simgen11, P. Sissol3, M. von Sivers5, D. Thers13, J. Thurn22, A. Tiseni1, Roberto Trotta23, C. Tunnell1, Kathrin Valerius14, M. Vargas15, Hongwei Wang24, Yuehuan Wei9, Ch. Weinheimer15, T. Wester22, J. Wulf9, Yanxi Zhang6, T. Zhu9, Kai Zuber22 
TL;DR: DARk matter WImp search with liquid xenoN (DARWIN) as mentioned in this paper is an experiment for the direct detection of dark matter using a multi-ton liquid xenon time projection chamber at its core.
Abstract: DARk matter WImp search with liquid xenoN (DARWIN(2)) will be an experiment for the direct detection of dark matter using a multi-ton liquid xenon time projection chamber at its core. Its primary g ...

553 citations