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Projected sensitivities of the LUX-ZEPLIN (LZ) experiment to new physics via low-energy electron recoils

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arxiv 2102.11740 v2 pith:VJYQ4XCX submitted 2021-02-23 hep-ex astro-ph.COhep-ph

Projected sensitivities of the LUX-ZEPLIN (LZ) experiment to new physics via low-energy electron recoils

The LZ Collaboration , D.S. Akerib , A.K. Al Musalhi , S.K. Alsum , C.S. Amarasinghe , A. Ames , T.J. Anderson , N. Angelides
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H.M. Ara\'ujo J.E. Armstrong M. Arthurs X. Bai J. Balajthy S. Balashov J. Bang J.W. Bargemann D. Bauer A. Baxter P. Beltrame E.P. Bernard A. Bernstein A. Bhatti A. Biekert T.P. Biesiadzinski H.J. Birch G.M. Blockinger E. Bodnia B. Boxer C.A.J. Brew P. Br\'as S. Burdin J.K. Busenitz M. Buuck R. Cabrita M.C. Carmona-Benitez M. Cascella C. Chan N.I. Chott A. Cole M.V. Converse A. Cottle G. Cox O. Creaner J.E. Cutter C.E. Dahl L. de Viveiros J.E.Y. Dobson E. Druszkiewicz S.R. Eriksen A. Fan S. Fayer N.M. Fearon S. Fiorucci H. Flaecher E.D. Fraser T. Fruth R.J. Gaitskell J. Genovesi C. Ghag E. Gibson S. Gokhale M.G.D. van der Grinten C.B. Gwilliam C.R. Hall C.A. Hardy S.J. Haselschwardt S.A. Hertel M. Horn D.Q. Huang C.M. Ignarra O. Jahangir R.S. James W. Ji J. Johnson A.C. Kaboth A.C. Kamaha K. Kamdin K. Kazkaz D. Khaitan A. Khazov I. Khurana D. Kodroff L. Korley E.V. Korolkova H. Kraus S. Kravitz L. Kreczko B. Krikler V.A. Kudryavtsev E.A. Leason J. Lee D.S. Leonard K.T. Lesko C. Levy J. Li J. Liao A. Lindote R. Linehan W.H. Lippincott X. Liu M.I. Lopes E. Lopez Asamar B. L\'opez Paredes W. Lorenzon S. Luitz P.A. Majewski A. Manalaysay L. Manenti R.L. Mannino N. Marangou M.E. McCarthy D.N. McKinsey J. McLaughlin E.H. Miller E. Mizrachi A. Monte M.E. Monzani J.A. Morad J.D. Morales Mendoza E. Morrison B.J. Mount A.St.J. Murphy D. Naim A. Naylor C. Nedlik H.N. Nelson F. Neves J.A. Nikoleyczik A. Nilima A. Nguyen I. Olcina K.C. Oliver-Mallory S. Pal K.J. Palladino J. Palmer S. Patton N. Parveen E.K. Pease B. Penning G. Pereira A. Piepke Y. Qie J. Reichenbacher C.A. Rhyne A. Richards Q. Riffard G.R.C. Rischbieter R. Rosero P. Rossiter D. Santone A.B.M.R. Sazzad R.W. Schnee P.R. Scovell S. Shaw T.A. Shutt J.J. Silk C. Silva R. Smith M. Solmaz V.N. Solovov P. Sorensen J. Soria I. Stancu A. Stevens K. Stifter B. Suerfu T.J. Sumner N. Swanson M. Szydagis W.C. Taylor R. Taylor D.J. Temples P.A. Terman D.R. Tiedt M. Timalsina W.H. To D.R. Tovey M. Tripathi D.R. Tronstad W. Turner U. Utku A. Vaitkus B. Wang J.J. Wang W. Wang J.R. Watson R.C. Webb R.G. White T.J. Whitis M. Williams F.L.H. Wolfs D. Woodward C.J. Wright X. Xiang J. Xu M. Yeh P. Zarzhitsky
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classification hep-ex astro-ph.COhep-ph
keywords darkmatterelectronexpectedeffectiveinteractinglow-energylux-zeplin
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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LUX-ZEPLIN (LZ) is a dark matter detector expected to obtain world-leading sensitivity to weakly interacting massive particles (WIMPs) interacting via nuclear recoils with a ~7-tonne xenon target mass. This manuscript presents sensitivity projections to several low-energy signals of the complementary electron recoil signal type: 1) an effective neutrino magnetic moment and 2) an effective neutrino millicharge, both for pp-chain solar neutrinos, 3) an axion flux generated by the Sun, 4) axion-like particles forming the galactic dark matter, 5) hidden photons, 6) mirror dark matter, and 7) leptophilic dark matter. World-leading sensitivities are expected in each case, a result of the large 5.6t 1000d exposure and low expected rate of electron recoil backgrounds in the $<$100keV energy regime. A consistent signal generation, background model and profile-likelihood analysis framework is used throughout.

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