Detecting Hidden Particles with MATHUSLA

A hidden sector containing light long-lived particles provides a well-motivated place to find new physics. The recently proposed MATHUSLA experiment has the potential to be extremely sensitive to light particles originating from rare meson decays in the very long lifetime region. In this work, we illustrate this strength with the specific example of a light scalar mixed with the standard model-like Higgs boson, a model where MATHUSLA can further probe unexplored parameter space from exotic Higgs decays. Design augmentations should be considered in order to maximize the ability of MATHUSLA to discover very light hidden sector particles.

[1]  G. Krnjaic,et al.  Probing light thermal dark matter with a Higgs portal mediator , 2015, 1512.04119.

[2]  Jared A. Evans,et al.  Long-lived staus and displaced leptons at the LHC , 2016, 1601.01326.

[3]  T. Hansl-Kozanecka,et al.  Commissioning of the ATLAS Muon Spectrometer with Cosmic Rays , 2010, 1006.4384.

[4]  C. Anastasiou,et al.  High precision determination of the gluon fusion Higgs boson cross-section at the LHC , 2016, 1602.00695.

[5]  Robert Foot,et al.  Phenomenology of a very light scalar (100 MeV < mh< 10 GeV) mixing with the SM Higgs , 2013, 1310.8042.

[6]  M. Campanelli,et al.  Search for neutral Higgs boson production through the process e+e− → Z∗ H0 , 1996 .

[7]  Jonathan L. Feng,et al.  ForwArd Search ExpeRiment at the LHC , 2017, 1708.09389.

[8]  J. Chou,et al.  New Detectors to Explore the Lifetime Frontier , 2016, 1606.06298.

[9]  M. Pospelov.  Secluded U(1) below the weak scale , 2008, 0811.1030.

[10]  H. Leutwyler,et al.  The decay of a light Higgs boson , 1990 .

[11]  Roni Harnik,et al.  Natural electroweak breaking from a mirror symmetry. , 2006, Physical review letters.

[12]  Hai-Bo Yu,et al.  Beyond Collisionless Dark Matter: Particle Physics Dynamics for Dark Matter Halo Structure , 2013, 1302.3898.

[13]  V. M. Ghete,et al.  A search for a doubly-charged Higgs boson in pp collisions at $\sqrt{s} = 7 \ \mbox{TeV}$ , 2012, 1207.2666.

[14]  Zhen Liu,et al.  Supersymmetric exotic decays of the 125 GeV Higgs boson. , 2013, Physical review letters.

[15]  Alberto Guffanti,et al.  A facility to search for hidden particles at the CERN SPS: the SHiP physics case , 2015, Reports on progress in physics. Physical Society.

[16]  L. Randall,et al.  Do B meson decays exclude a light Higgs , 1988 .

[17]  M. Pospelov,et al.  New parity-violating muonic forces and the proton charge radius. , 2011, Physical review letters.

[18]  L. A. Granado Cardoso,et al.  Search for Hidden-Sector Bosons in B(0)→K(*0)μ(+)μ(-) Decays. , 2015, Physical review letters.

[19]  Michael E. Peskin,et al.  Analysis of long-lived particle decays with the MATHUSLA detector , 2017, 1705.06327.

[20]  Avati,et al.  Luminosity-independent measurement of the proton-proton total cross section at √s=8 TeV. , 2013, Physical review letters.

[21]  Ryszard S. Romaniuk,et al.  Observation of a new boson at a mass of 125 GeV with the CMS experiment at the LHC , 2012 .

[22]  L. A. Granado Cardoso,et al.  Measurement of the b-Quark Production Cross Section in 7 and 13 TeV pp Collisions. , 2016, Physical review letters.

[23]  Peter Skands,et al.  An introduction to PYTHIA 8.2 , 2014, Comput. Phys. Commun..

[24]  Andrea Coccaro,et al.  Data-driven model-independent searches for long-lived particles at the LHC , 2016, 1605.02742.

[25]  I. Yavin,et al.  Muonic hydrogen and MeV forces , 2010, 1011.4922.

[26]  J. Shelton,et al.  Fitting the Galactic Center gamma-ray excess with cascade annihilations , 2014, 1405.0272.

[27]  A. Baroncelli,et al.  Search for Axion Like Particle Production in 400-{GeV} Proton - Copper Interactions , 1985 .

[28]  D.S.Gorbunov.  Light Sgoldstino: Precision Measurements versus Collider Searches , 2000, hep-ph/0007325.

[29]  W. Marsden.  I and J , 2012 .

[30]  C. Frugiuele,et al.  Phenomenology of relaxion-Higgs mixing , 2016, 1610.02025.

[31]  Cheng-Wei Chiang,et al.  Proton size anomaly. , 2010, Physical review letters.

[32]  S. Hsu,et al.  Detecting multimuon jets from the Higgs boson exotic decays in the Higgs portal framework , 2016, 1607.07550.

[33]  P. S. Bhupal Dev,et al.  Long Lived Light Scalars as Probe of Low Scale Seesaw Models , 2017, 1703.02471.

[34]  D. Gorbunov,et al.  Light inflaton hunter’s guide , 2009, 0912.0390.

[35]  A. Lenz.  Lifetimes and heavy quark expansion , 2015 .

[36]  M. Pospelov,et al.  BBN for the LHC: constraints on lifetimes of the Higgs portal scalars , 2017, 1706.01920.

[37]  Gustavo Burdman,et al.  Folded supersymmetry and the LEP paradox , 2006, hep-ph/0609152.

[38]  V. Gligorov,et al.  arXiv : Searching for Long-lived Particles: A Compact Detector for Exotics at LHCb , 2017, 1708.09395.

[39]  P. S. Bhupal Dev,et al.  Displaced photon signal from a possible light scalar in minimal left-right seesaw model , 2016, 1612.09587.