@misc{10481/60170,
year = {2019},
month = {4},
url = {http://hdl.handle.net/10481/60170},
abstract = {This Letter presents a search for the production of a long-lived neutral particle (Zd) decaying within the ATLAS hadronic calorimeter, in association with a Standard Model (SM) Z boson produced via an intermediate scalar boson, where Z→l+l− (l=e,μ). The data used were collected by the ATLAS detector during 2015 and 2016 pp collisions with a center-of-mass energy of s√=13 TeV at the Large Hadron Collider and corresponds to an integrated luminosity of 36.1±0.8 fb−1. No significant excess of events is observed above the expected background. Limits on the production cross section of the scalar boson times its decay branching fraction into the long-lived neutral particle are derived as a function of the mass of the intermediate scalar boson, the mass of the long-lived neutral particle, and its cτ from a few centimeters to one hundred meters. In the case that the intermediate scalar boson is the SM Higgs boson, its decay branching fraction to a long-lived neutral particle with a cτ approximately between 0.1 m and 7 m is excluded with a 95% confidence level up to 10% for mZd between 5 and 15 GeV.},
organization = {We acknowledge the support of ANPCyT, Argentina;
YerPhI, Armenia; ARC, Australia; BMWFW and FWF,
Austria; ANAS, Azerbaijan; SSTC, Belarus; CNPq and
FAPESP, Brazil; NSERC, NRC and CFI, Canada; CERN;
CONICYT, Chile; CAS, MOST, and NSFC, China;
COLCIENCIAS, Colombia; MSMT CR, MPO CR, and
VSC CR, Czech Republic; DNRF and DNSRC, Denmark;
IN2P3-CNRS, CEA-DRF/IRFU, France; SRNSFG,
Georgia; BMBF, HGF, and MPG, Germany; GSRT,
Greece; RGC, Hong Kong SAR, China; ISF and
Benoziyo Center, Israel; INFN, Italy; MEXT and JSPS,
Japan; CNRST, Morocco; NWO, Netherlands; RCN,
Norway; MNiSW and NCN, Poland; FCT, Portugal;
MNE/IFA, Romania; MES of Russia and NRC KI,
Russian Federation; JINR; MESTD, Serbia; MSSR,
Slovakia; ARRS and MIZŠ, Slovenia; DST/NRF, South
Africa; MINECO, Spain; SRC andWallenberg Foundation,
Sweden; SERI, SNSF and Cantons of Bern and Geneva,
Switzerland; MOST, Taiwan; TAEK, Turkey; STFC,
United Kingdom; DOE and NSF, United States of
America. In addition, individual groups and members have
received support from BCKDF, CANARIE, CRC, and
Compute Canada, Canada; COST, ERC, ERDF, Horizon
2020, and Marie Skłodowska-Curie Actions, European
Union; Investissements d’ Avenir Labex and Idex, ANR,
France; DFG and AvH Foundation, Germany; Herakleitos,
Thales, and Aristeia programmes co-financed by EU-ESF
and the Greek NSRF, Greece; BSF-NSF and GIF, Israel;
CERCA Programme Generalitat de Catalunya, Spain; The
Royal Society and Leverhulme Trust, United Kingdom.},
publisher = {American Physical Society},
title = {Search for the production of a long-lived neutral particle decaying within the ATLAS hadronic calorimeter in association with a Z boson from pp collisions at s√=13 TeV},
doi = {10.1103/PhysRevLett.122.151801},
author = {Aaboud, M. and Aguilar Saavedra, Juan Antonio and Atlas Collaboration},
}