First Results on the Scalar WIMP-Pion Coupling, Using the XENON1T Experiment

(XENON Collaboration)

doi:10.1103/PhysRevLett.122.071301

First Results on the Scalar WIMP-Pion Coupling, Using the XENON1T Experiment

(XENON Collaboration)

Physics

Research output: Contribution to journal › Article

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 cm2 (90% confidence level) at 30 GeV/c2 WIMP mass.

Original language	English (US)
Article number	071301
Journal	Physical Review Letters
Volume	122
Issue number	7
DOIs	https://doi.org/10.1103/PhysRevLett.122.071301
State	Published - Feb 21 2019

ASJC Scopus subject areas

Physics and Astronomy(all)

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10.1103/PhysRevLett.122.071301

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(XENON Collaboration) (2019). First Results on the Scalar WIMP-Pion Coupling, Using the XENON1T Experiment. Physical Review Letters, 122(7), [071301]. https://doi.org/10.1103/PhysRevLett.122.071301

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title = "First Results on the Scalar WIMP-Pion Coupling, Using the XENON1T Experiment",

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 cm2 (90% confidence level) at 30 GeV/c2 WIMP mass.",

author = "{(XENON Collaboration)} and E. Aprile and J. Aalbers and F. Agostini and M. Alfonsi and L. Althueser and Amaro, {F. D.} and M. Anthony and Antochi, {V. C.} and F. Arneodo and L. Baudis and B. Bauermeister and Benabderrahmane, {M. L.} and T. Berger and Breur, {P. A.} and A. Brown and A. Brown and E. Brown and S. Bruenner and G. Bruno and R. Budnik and C. Capelli and Cardoso, {J. M.R.} and D. Cichon and D. Coderre and Colijn, {A. P.} and J. Conrad and Cussonneau, {J. P.} and Decowski, {M. P.} and {De Perio}, P. and {Di Gangi}, P. and {Di Giovanni}, A. and S. Diglio and A. Elykov and G. Eurin and J. Fei and Ferella, {A. D.} and A. Fieguth and W. Fulgione and {Gallo Rosso}, A. and M. Galloway and F. Gao and M. Garbini and L. Grandi and Z. Greene and C. Hasterok and E. Hogenbirk and J. Howlett and M. Iacovacci and R. Itay and F. Joerg",

year = "2019",

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doi = "10.1103/PhysRevLett.122.071301",

language = "English (US)",

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T1 - First Results on the Scalar WIMP-Pion Coupling, Using the XENON1T Experiment

AU - (XENON Collaboration)

AU - Aprile, E.

AU - Aalbers, J.

AU - Agostini, F.

AU - Alfonsi, M.

AU - Althueser, L.

AU - Amaro, F. D.

AU - Anthony, M.

AU - Antochi, V. C.

AU - Arneodo, F.

AU - Baudis, L.

AU - Bauermeister, B.

AU - Benabderrahmane, M. L.

AU - Berger, T.

AU - Breur, P. A.

AU - Brown, A.

AU - Brown, E.

AU - Bruenner, S.

AU - Bruno, G.

AU - Budnik, R.

AU - Capelli, C.

AU - Cardoso, J. M.R.

AU - Cichon, D.

AU - Coderre, D.

AU - Colijn, A. P.

AU - Conrad, J.

AU - Cussonneau, J. P.

AU - Decowski, M. P.

AU - De Perio, P.

AU - Di Gangi, P.

AU - Di Giovanni, A.

AU - Diglio, S.

AU - Elykov, A.

AU - Eurin, G.

AU - Fei, J.

AU - Ferella, A. D.

AU - Fieguth, A.

AU - Fulgione, W.

AU - Gallo Rosso, A.

AU - Galloway, M.

AU - Gao, F.

AU - Garbini, M.

AU - Grandi, L.

AU - Greene, Z.

AU - Hasterok, C.

AU - Hogenbirk, E.

AU - Howlett, J.

AU - Iacovacci, M.

AU - Itay, R.

AU - Joerg, F.

PY - 2019/2/21

Y1 - 2019/2/21

N2 - 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 cm2 (90% confidence level) at 30 GeV/c2 WIMP mass.

AB - 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 cm2 (90% confidence level) at 30 GeV/c2 WIMP mass.

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U2 - 10.1103/PhysRevLett.122.071301

DO - 10.1103/PhysRevLett.122.071301

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