6533b834fe1ef96bd129d707

RESEARCH PRODUCT

The MATHUSLA test stand

Antonio PolicicchioR. SantonicoR. SantonicoGiovanni MarsellaJohn Paul ChouHenry LubattiMaf AlidraDavid CurtinSteffie Ann ThayilW. KuykendallGilad MizrachiRoberto GuidaAustin BallCharles YoungPaolo CamarriPaolo CamarriCristiano AlpigianiGordon WattsD. LazicAli GarabagluAudrey Katherine KvamJ. RothbergYiftah SilverErez EtzionRoberto CardarelliEmma Torró-pastorMason ProffittBrandon Gomes

subject

Nuclear and High Energy PhysicsPhysics - Instrumentation and DetectorsPhysics::Instrumentation and DetectorsBackscattered cosmic raysLong-lived particles; LHC; MATHUSLA; Backscattered cosmic raysFOS: Physical sciencesCosmic rayScintillator01 natural sciencesHigh Energy Physics - ExperimentNuclear physicsHigh Energy Physics - Experiment (hep-ex)Atlas (anatomy)0103 physical sciencesmedicineDetectors and Experimental Techniques010306 general physicsphysics.ins-detInstrumentationSettore FIS/01PhysicsLuminosity (scattering theory)MuonLarge Hadron ColliderInteraction pointhep-ex010308 nuclear & particles physicsInstrumentation and Detectors (physics.ins-det)Long-lived particlesMATHUSLAmedicine.anatomical_structureW′ and Z′ bosonsHigh Energy Physics::ExperimentLHCParticle Physics - Experiment

description

The rate of muons from LHC $pp$ collisions reaching the surface above the ATLAS interaction point is measured and compared with expected rates from decays of $W$ and $Z$ bosons and $b$- and $c$-quark jets. In addition, data collected during periods without beams circulating in the LHC provide a measurement of the background from cosmic ray inelastic backscattering that is compared to simulation predictions. Data were recorded during 2018 in a 2.5 $\times$ 2.5 $\times$ 6.5~$\rm{m}^3$ active volume MATHUSLA test stand detector unit consisting of two scintillator planes, one at the top and one at the bottom, which defined the trigger, and six layers of RPCs between them, grouped into three $(x,y)$-measuring layers separated by 1.74 m from each other. Triggers selecting both upward-going tracks and downward-going tracks were used.

https://doi.org/10.1016/j.nima.2020.164661