TY  - JOUR
ID  - discovery10059800
UR  - https://doi.org/10.1007/JHEP10(2018)031
N2  - A search for exotic decays of the Higgs boson into a pair of spin-zero particles, H ? aa, where the a-boson decay sin to b-quarks promptly or with a mean proper lifetime c?aup to 6 mm and has a mass in the range of 20?60 GeV, is presented. The search is performed in events where the Higgs boson is produced in association with a W or Z boson, giving rise to a signature of one or two charged leptons (electrons or muons) and multiple jets from b-quark decays. The analysis is based on the dataset of proton-proton collisions at s=13 TeV recorded in 2015 and 2016 by the ATLAS detector at the CERN Large Hadron Collider, corresponding to an integrated luminosity of 36.1 fb?1. No significant excess of events above the Standard Model background prediction is observed, and 95% confidence-level upper limits are derived for the production cross-sections for pp ? WH, ZH and their combination, times the branching ratio of the decay chain H ? aa ? 4b. For a-bosons which decay promptly, the upper limit on the combination of cross-sections for WH and ZH times the branching ratio of H ? aa ? 4b ranges from 3.0 pb for ma= 20 GeV to 1.3 pb for ma= 60 GeV, assuming that the ratio of WH to ZH cross-sections follows the Standard Model prediction. For a-bosons with longer proper lifetimes, the most stringent limits are 1.8 pb and 0.68 pb, respectively, at c?a? 0.4 mm.[Figure not available: see fulltext.].
AV  - public
TI  - Search for the Higgs Boson Produced in Association With a Vector Boson and Decaying Into Two Spin-zero Particles in the H ? Aa ? 4b Channel in Pp Collisions at   S?=13 Tev With the Atlas Detector
Y1  - 2018/10/04/
SN  - 1029-8479
KW  - Beyond Standard Model
KW  -  Hadron-Hadron scattering (experiments)
KW  -  Higgs physics
JF  - Journal of High Energy Physics
A1  - Aaboud, M
A1  - Aad, G
A1  - Abbott, B
A1  - Abdinov, O
A1  - Abeloos, B
A1  - Abhayasinghe, DK
A1  - Abidi, SH
A1  - AbouZeid, OS
A1  - Abraham, NL
A1  - Abramowicz, H
A1  - Abreu, H
A1  - Abulaiti, Y
A1  - Acharya, BS
A1  - Adachi, S
A1  - Adamczyk, L
A1  - Adelman, J
A1  - Adersberger, M
A1  - Adiguzel, A
A1  - Adye, T
A1  - Affolder, AA
A1  - Afik, Y
A1  - Agheorghiesei, C
A1  - Aguilar-Saavedra, JA
A1  - Ahmadov, F
A1  - Aielli, G
A1  - Akatsuka, S
A1  - Åkesson, TPA
A1  - Akilli, E
A1  - Akimov, AV
A1  - Alberghi, GL
A1  - Albert, J
A1  - Albicocco, P
A1  - Alconada Verzini, MJ
A1  - Alderweireldt, S
A1  - Aleksa, M
A1  - Aleksandrov, IN
A1  - Alexa, C
A1  - Alexopoulos, T
A1  - Alhroob, M
A1  - Ali, B
A1  - Alimonti, G
A1  - Alison, J
A1  - Alkire, SP
A1  - Allaire, C
A1  - Allbrooke, BMM
A1  - Allen, BW
A1  - Allport, PP
A1  - Aloisio, A
A1  - Alonso, A
A1  - Alonso, F
A1  - Alpigiani, C
A1  - Alshehri, AA
A1  - Alstaty, MI
A1  - Alvarez Gonzalez, B
A1  - Álvarez Piqueras, D
A1  - Alviggi, MG
A1  - Amadio, BT
A1  - Amaral Coutinho, Y
A1  - Ambroz, L
A1  - Amelung, C
A1  - Amidei, D
A1  - Amor Dos Santos, SP
A1  - Amoroso, S
A1  - Amrouche, CS
A1  - Anastopoulos, C
A1  - Ancu, LS
A1  - Andari, N
A1  - Andeen, T
A1  - Anders, CF
A1  - Anders, JK
A1  - Anderson, KJ
A1  - Andreazza, A
A1  - Andrei, V
A1  - Anelli, CR
A1  - Angelidakis, S
A1  - Angelozzi, I
A1  - Angerami, A
A1  - Anisenkov, AV
A1  - Annovi, A
A1  - Antel, C
A1  - Anthony, MT
A1  - Antonelli, M
A1  - Antrim, DJA
A1  - Anulli, F
A1  - Aoki, M
A1  - Aparisi Pozo, JA
A1  - Aperio Bella, L
A1  - Arabidze, G
N1  - This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
VL  - 2018
ER  -