Search for a Light CP -odd Higgs Boson and Low-Mass Dark Matter at the Belle Experiment

(Belle Collaboration)

doi:10.1103/PhysRevLett.122.011801

Search for a Light CP -odd Higgs Boson and Low-Mass Dark Matter at the Belle Experiment

(Belle Collaboration)

Research output: Contribution to journal › Article › peer-review

24 Citations (Scopus)

Abstract

We report on the first Belle search for a light CP-odd Higgs boson, A0, that decays into low mass dark matter, χ, in final states with a single photon and missing energy. We search for events produced via the dipion transition (2S)→ (1S)π+π-, followed by the on-shell process (1S)→γA0 with A0→χχ, or by the off-shell process (1S)→γχχ. Utilizing a data sample of 157.3×106 (2S) decays, we find no evidence for a signal. We set limits on the branching fractions of such processes in the mass ranges MA0<8.97 GeV/c2 and Mχ<4.44 GeV/c2. We then use the limits on the off-shell process to set competitive limits on WIMP-nucleon scattering in the WIMP mass range below 5 GeV/c2.

Original language	English
Article number	011801
Journal	Physical review letters
Volume	122
Issue number	1
DOIs	https://doi.org/10.1103/PhysRevLett.122.011801
Publication status	Published - 2019 Jan 4

Bibliographical note

Publisher Copyright:
© 2019 authors. Published by the American Physical Society.

ASJC Scopus subject areas

General Physics and Astronomy

Access to Document

10.1103/PhysRevLett.122.011801

Cite this

@article{a3fa56cda0b4441a9196147557df3365,

title = "Search for a Light CP -odd Higgs Boson and Low-Mass Dark Matter at the Belle Experiment",

abstract = "We report on the first Belle search for a light CP-odd Higgs boson, A0, that decays into low mass dark matter, χ, in final states with a single photon and missing energy. We search for events produced via the dipion transition (2S)→ (1S)π+π-, followed by the on-shell process (1S)→γA0 with A0→χχ, or by the off-shell process (1S)→γχχ. Utilizing a data sample of 157.3×106 (2S) decays, we find no evidence for a signal. We set limits on the branching fractions of such processes in the mass ranges MA0<8.97 GeV/c2 and Mχ<4.44 GeV/c2. We then use the limits on the off-shell process to set competitive limits on WIMP-nucleon scattering in the WIMP mass range below 5 GeV/c2.",

author = "{(Belle Collaboration)} and Seong, {I. S.} and Vahsen, {S. E.} and I. Adachi and H. Aihara and {Al Said}, S. and Asner, {D. M.} and V. Aulchenko and T. Aushev and R. Ayad and V. Babu and Bakich, {A. M.} and V. Bansal and P. Behera and V. Bhardwaj and B. Bhuyan and T. Bilka and J. Biswal and A. Bobrov and G. Bonvicini and A. Bozek and M. Bra{\v c}ko and Browder, {T. E.} and L. Cao and D. {\v C}ervenkov and P. Chang and V. Chekelian and A. Chen and Cheon, {B. G.} and K. Chilikin and K. Cho and Y. Choi and S. Choudhury and D. Cinabro and S. Cunliffe and N. Dash and {Di Carlo}, S. and J. Dingfelder and Dong, {T. V.} and S. Eidelman and D. Epifanov and Fast, {J. E.} and A. Frey and Fulsom, {B. G.} and R. Garg and V. Gaur and N. Gabyshev and A. Garmash and M. Gelb and A. Giri and E. Won",

note = "Publisher Copyright: {\textcopyright} 2019 authors. Published by the American Physical Society.",

year = "2019",

month = jan,

day = "4",

doi = "10.1103/PhysRevLett.122.011801",

language = "English",

volume = "122",

journal = "Physical review letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "1",

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TY - JOUR

T1 - Search for a Light CP -odd Higgs Boson and Low-Mass Dark Matter at the Belle Experiment

AU - (Belle Collaboration)

AU - Seong, I. S.

AU - Vahsen, S. E.

AU - Adachi, I.

AU - Aihara, H.

AU - Al Said, S.

AU - Asner, D. M.

AU - Aulchenko, V.

AU - Aushev, T.

AU - Ayad, R.

AU - Babu, V.

AU - Bakich, A. M.

AU - Bansal, V.

AU - Behera, P.

AU - Bhardwaj, V.

AU - Bhuyan, B.

AU - Bilka, T.

AU - Biswal, J.

AU - Bobrov, A.

AU - Bonvicini, G.

AU - Bozek, A.

AU - Bračko, M.

AU - Browder, T. E.

AU - Cao, L.

AU - Červenkov, D.

AU - Chang, P.

AU - Chekelian, V.

AU - Chen, A.

AU - Cheon, B. G.

AU - Chilikin, K.

AU - Cho, K.

AU - Choi, Y.

AU - Choudhury, S.

AU - Cinabro, D.

AU - Cunliffe, S.

AU - Dash, N.

AU - Di Carlo, S.

AU - Dingfelder, J.

AU - Dong, T. V.

AU - Eidelman, S.

AU - Epifanov, D.

AU - Fast, J. E.

AU - Frey, A.

AU - Fulsom, B. G.

AU - Garg, R.

AU - Gaur, V.

AU - Gabyshev, N.

AU - Garmash, A.

AU - Gelb, M.

AU - Giri, A.

AU - Won, E.

PY - 2019/1/4

Y1 - 2019/1/4

N2 - We report on the first Belle search for a light CP-odd Higgs boson, A0, that decays into low mass dark matter, χ, in final states with a single photon and missing energy. We search for events produced via the dipion transition (2S)→ (1S)π+π-, followed by the on-shell process (1S)→γA0 with A0→χχ, or by the off-shell process (1S)→γχχ. Utilizing a data sample of 157.3×106 (2S) decays, we find no evidence for a signal. We set limits on the branching fractions of such processes in the mass ranges MA0<8.97 GeV/c2 and Mχ<4.44 GeV/c2. We then use the limits on the off-shell process to set competitive limits on WIMP-nucleon scattering in the WIMP mass range below 5 GeV/c2.

AB - We report on the first Belle search for a light CP-odd Higgs boson, A0, that decays into low mass dark matter, χ, in final states with a single photon and missing energy. We search for events produced via the dipion transition (2S)→ (1S)π+π-, followed by the on-shell process (1S)→γA0 with A0→χχ, or by the off-shell process (1S)→γχχ. Utilizing a data sample of 157.3×106 (2S) decays, we find no evidence for a signal. We set limits on the branching fractions of such processes in the mass ranges MA0<8.97 GeV/c2 and Mχ<4.44 GeV/c2. We then use the limits on the off-shell process to set competitive limits on WIMP-nucleon scattering in the WIMP mass range below 5 GeV/c2.

UR - http://www.scopus.com/inward/record.url?scp=85059832635&partnerID=8YFLogxK

U2 - 10.1103/PhysRevLett.122.011801

DO - 10.1103/PhysRevLett.122.011801

M3 - Article

C2 - 31012694

AN - SCOPUS:85059832635

SN - 0031-9007

VL - 122

JO - Physical review letters

JF - Physical review letters

IS - 1

M1 - 011801

ER -

Search for a Light CP -odd Higgs Boson and Low-Mass Dark Matter at the Belle Experiment

Abstract

Bibliographical note

ASJC Scopus subject areas

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