Search for an exotic decay of the Higgs boson to a pair of light pseudoscalars in the final state with two b quarks and two τ leptons in proton–proton collisions at s=13TeV

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@article{506968a27d484424a5856084142fc0c7,
title = "Search for an exotic decay of the Higgs boson to a pair of light pseudoscalars in the final state with two b quarks and two τ leptons in proton–proton collisions at s=13TeV",
abstract = "A search for an exotic decay of the Higgs boson to a pair of light pseudoscalar bosons is performed for the first time in the final state with two b quarks and two τ leptons. The search is motivated in the context of models of physics beyond the standard model (SM), such as two Higgs doublet models extended with a complex scalar singlet (2HDM + S), which include the next-to-minimal supersymmetric SM (NMSSM). The results are based on a data set of proton–proton collisions corresponding to an integrated luminosity of 35.9fb−1, accumulated by the CMS experiment at the LHC in 2016 at a center-of-mass energy of 13TeV. Masses of the pseudoscalar boson between 15 and 60GeV are probed, and no excess of events above the SM expectation is observed. Upper limits between 3 and 12{\%} are set on the branching fraction B(h→aa→2τ2b) assuming the SM production of the Higgs boson. Upper limits are also set on the branching fraction of the Higgs boson to two light pseudoscalar bosons in different 2HDM + S scenarios. Assuming the SM production cross section for the Higgs boson, the upper limit on this quantity is as low as 20{\%} for a mass of the pseudoscalar of 40GeV in the NMSSM.",
keywords = "2HDM + S, CMS, Exotic decays, Higgs boson, NMSSM, Physics",
author = "{The CMS collaboration} and Q. Wang and W. Fang and X. Gao and Chen, {H. S.} and M. Chen and Y. Chen and Z. Liu and J. Tao and Z. Wang and H. Zhang and J. Zhao and J. Li and L. Li and Y. Mao and D. Wang and Z. Xu and Y. Wang and A. Mohamed and S. Bhowmik and J. Pekkanen and M. Voutilainen and Heikkil{\"a}, {J. K.} and T. J{\"a}rvinen and R. Kinnunen and T. Lamp{\'e}n and M. Nguyen and S. Zhang and A. Singh and F. Colombo and P. Kontaxakis and Nagy, {M. I.} and A. Kaur and S. Sharma and Ashok Kumar and S. Bhattacharya and B. Singh and P. Shukla and S. Bhattacharya and S. Sharma and A. Sharma and F. Fiori and D. Kim and Kim, {M. S.} and J. Lee and S. Lee and Yang, {Y. C.} and Kim, {T. J.} and S. Cho and Park, {S. K.} and J. Kim and J. Kim and J. Kim and J. Lee and J. Lee and I. Ahmed and A. Ahmad and Asghar, {M. I.} and Y. Chen and A. Sharma and P. Berger and Chang, {Y. H.} and Doan, {T. H.} and Yu, {S. S.} and Chen, {P. H.} and Li, {Y. Y.} and M. Kaya and S. Sen and D. Smith and G. Singh and A. Khan and J. Hakala and J. Lee and Z. Wang and L. Wang and V. Sharma and J. Wood and S. Wang and Nguyen, {T. Q.} and Z. Zhang and A. Johnson and Z. Hu and M. Johnson and B. Schneider and M. Wang and J. Wang and S. Wang and V. Sharma and X. Chen and H. Wang and X. Wang and Z. Wu and J. Zhang and Q. Wang and D. Kim and S. Narayanan and X. Niu and J. Wang and Wang, {T. W.} and S. Bhattacharya and W. Luo and S. Das and M. Jones and Jung, {A. W.} and Peng, {C. C.} and J. Sun and F. Wang and Z. Chen and S. Kaplan and S. Luo and S. Lee and T. Peltola and Z. Wang and H. Li and Y. Wang and A. Savin",
year = "2018",
month = "10",
day = "10",
doi = "10.1016/j.physletb.2018.08.057",
language = "English",
volume = "785",
pages = "462--488",
journal = "Physics Letters B",
issn = "0370-2693",
publisher = "Elsevier",

}

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TY - JOUR

T1 - Search for an exotic decay of the Higgs boson to a pair of light pseudoscalars in the final state with two b quarks and two τ leptons in proton–proton collisions at s=13TeV

AU - The CMS collaboration

AU - Wang, Q.

AU - Fang, W.

AU - Gao, X.

AU - Chen, H. S.

AU - Chen, M.

AU - Chen, Y.

AU - Liu, Z.

AU - Tao, J.

AU - Wang, Z.

AU - Zhang, H.

AU - Zhao, J.

AU - Li, J.

AU - Li, L.

AU - Mao, Y.

AU - Wang, D.

AU - Xu, Z.

AU - Wang, Y.

AU - Mohamed, A.

AU - Bhowmik, S.

AU - Pekkanen, J.

AU - Voutilainen, M.

AU - Heikkilä, J. K.

AU - Järvinen, T.

AU - Kinnunen, R.

AU - Lampén, T.

AU - Nguyen, M.

AU - Zhang, S.

AU - Singh, A.

AU - Colombo, F.

AU - Kontaxakis, P.

AU - Nagy, M. I.

AU - Kaur, A.

AU - Sharma, S.

AU - Kumar, Ashok

AU - Bhattacharya, S.

AU - Singh, B.

AU - Shukla, P.

AU - Bhattacharya, S.

AU - Sharma, S.

AU - Sharma, A.

AU - Fiori, F.

AU - Kim, D.

AU - Kim, M. S.

AU - Lee, J.

AU - Lee, S.

AU - Yang, Y. C.

AU - Kim, T. J.

AU - Cho, S.

AU - Park, S. K.

AU - Kim, J.

AU - Kim, J.

AU - Kim, J.

AU - Lee, J.

AU - Lee, J.

AU - Ahmed, I.

AU - Ahmad, A.

AU - Asghar, M. I.

AU - Chen, Y.

AU - Sharma, A.

AU - Berger, P.

AU - Chang, Y. H.

AU - Doan, T. H.

AU - Yu, S. S.

AU - Chen, P. H.

AU - Li, Y. Y.

AU - Kaya, M.

AU - Sen, S.

AU - Smith, D.

AU - Singh, G.

AU - Khan, A.

AU - Hakala, J.

AU - Lee, J.

AU - Wang, Z.

AU - Wang, L.

AU - Sharma, V.

AU - Wood, J.

AU - Wang, S.

AU - Nguyen, T. Q.

AU - Zhang, Z.

AU - Johnson, A.

AU - Hu, Z.

AU - Johnson, M.

AU - Schneider, B.

AU - Wang, M.

AU - Wang, J.

AU - Wang, S.

AU - Sharma, V.

AU - Chen, X.

AU - Wang, H.

AU - Wang, X.

AU - Wu, Z.

AU - Zhang, J.

AU - Wang, Q.

AU - Kim, D.

AU - Narayanan, S.

AU - Niu, X.

AU - Wang, J.

AU - Wang, T. W.

AU - Bhattacharya, S.

AU - Luo, W.

AU - Das, S.

AU - Jones, M.

AU - Jung, A. W.

AU - Peng, C. C.

AU - Sun, J.

AU - Wang, F.

AU - Chen, Z.

AU - Kaplan, S.

AU - Luo, S.

AU - Lee, S.

AU - Peltola, T.

AU - Wang, Z.

AU - Li, H.

AU - Wang, Y.

AU - Savin, A.

PY - 2018/10/10

Y1 - 2018/10/10

N2 - A search for an exotic decay of the Higgs boson to a pair of light pseudoscalar bosons is performed for the first time in the final state with two b quarks and two τ leptons. The search is motivated in the context of models of physics beyond the standard model (SM), such as two Higgs doublet models extended with a complex scalar singlet (2HDM + S), which include the next-to-minimal supersymmetric SM (NMSSM). The results are based on a data set of proton–proton collisions corresponding to an integrated luminosity of 35.9fb−1, accumulated by the CMS experiment at the LHC in 2016 at a center-of-mass energy of 13TeV. Masses of the pseudoscalar boson between 15 and 60GeV are probed, and no excess of events above the SM expectation is observed. Upper limits between 3 and 12% are set on the branching fraction B(h→aa→2τ2b) assuming the SM production of the Higgs boson. Upper limits are also set on the branching fraction of the Higgs boson to two light pseudoscalar bosons in different 2HDM + S scenarios. Assuming the SM production cross section for the Higgs boson, the upper limit on this quantity is as low as 20% for a mass of the pseudoscalar of 40GeV in the NMSSM.

AB - A search for an exotic decay of the Higgs boson to a pair of light pseudoscalar bosons is performed for the first time in the final state with two b quarks and two τ leptons. The search is motivated in the context of models of physics beyond the standard model (SM), such as two Higgs doublet models extended with a complex scalar singlet (2HDM + S), which include the next-to-minimal supersymmetric SM (NMSSM). The results are based on a data set of proton–proton collisions corresponding to an integrated luminosity of 35.9fb−1, accumulated by the CMS experiment at the LHC in 2016 at a center-of-mass energy of 13TeV. Masses of the pseudoscalar boson between 15 and 60GeV are probed, and no excess of events above the SM expectation is observed. Upper limits between 3 and 12% are set on the branching fraction B(h→aa→2τ2b) assuming the SM production of the Higgs boson. Upper limits are also set on the branching fraction of the Higgs boson to two light pseudoscalar bosons in different 2HDM + S scenarios. Assuming the SM production cross section for the Higgs boson, the upper limit on this quantity is as low as 20% for a mass of the pseudoscalar of 40GeV in the NMSSM.

KW - 2HDM + S

KW - CMS

KW - Exotic decays

KW - Higgs boson

KW - NMSSM

KW - Physics

UR - http://www.scopus.com/inward/record.url?scp=85053468138&partnerID=8YFLogxK

U2 - 10.1016/j.physletb.2018.08.057

DO - 10.1016/j.physletb.2018.08.057

M3 - Article

AN - SCOPUS:85053468138

VL - 785

SP - 462

EP - 488

JO - Physics Letters B

JF - Physics Letters B

SN - 0370-2693

ER -

ID: 28899418