Sensitivity of the ship experiment to hidden particles at the cern SPS

Download
2020-11
Akmete, Tuğberk Atakan
New Physics can be explored by connecting the Hidden Sector to the Standard Model through hidden particles, which are very feebly interacting and have masses below the Fermi scale. The SHiP (Search for Hidden Particles) experiment aims to search for hidden particles produced by transferring SPS proton beams into the Beam Dump Facility’s fixed-target. In this thesis, the SHiP’s sensitivity to two hidden particles, Dark Photon and Axion-Like-Particle, is studied. In order to achieve this goal, a chain of physics implementation-MC grid production-sensitivity analysis is composed, which is used to exclude a phase-space contour with a 90% confidence level. The results show that SHiP promises unique sensitivity regions which have not been investigated or considered previously.

Suggestions

Properties of jets measured from tracks in proton-proton collisions at center-of-mass energy root s=7 TeV with the ATLAS detector
Aad, G.; et. al. (2011-09-20)
Jets are identified and their properties studied in center-of-mass energy root s = 7 TeV proton-proton collisions at the Large Hadron Collider using charged particles measured by the ATLAS inner detector. Events are selected using a minimum bias trigger, allowing jets at very low transverse momentum to be observed and their characteristics in the transition to high-momentum fully perturbative jets to be studied. Jets are reconstructed using the anti-k(t) algorithm applied to charged particles with two radiu...
SENSITIVITY OF THE STOKES PARAMETERS IN THE DECAY B-]S-GAMMA-G TO THE MODEL OF FCNC
Alıyev, Tahmasıb; TURAN, G (Springer Science and Business Media LLC, 1995-01-01)
We calculated the Stokes parameters which characterize the polarization properties of the photons produced in the decay b-->s gamma g in the framework of the Standard Model (SM) and Two Higgs Doublet Model (2HDM). It is shown that the Stokes parameter xi 3, which defines the linear photon polarization with a polarization vector in the decay plane, is very sensitive to the parameters of the above-mentioned models. The predicted values of xi(3) are large enough (in some cases it achieves the maximum possible ...
Performance of missing transverse momentum reconstruction in proton-proton collisions at root s=7 TeV with ATLAS
Aad, G.; et. al. (2012-01-01)
The measurement of missing transverse momentum in the ATLAS detector, described in this paper, makes use of the full event reconstruction and a calibration based on reconstructed physics objects. The performance of the missing transverse momentum reconstruction is evaluated using data collected in pp collisions at a centre-of-mass energy of 7 TeV in 2010. Minimum bias events and events with jets of hadrons are used from data samples corresponding to an integrated luminosity of about 0.3 nb(-1) and 600 nb(-1...
Measurement of the transverse momentum distribution ofWbosons inppcollisions ats=7  TeVwith the ATLAS detector
Aad, G.; et. al. (American Physical Society (APS), 2012-1-18)
This paper describes a measurement of the W boson transverse momentum distribution using ATLAS pp collision data from the 2010 run of the LHC at ffiffi s p ¼ 7 TeV, corresponding to an integrated luminosity of about 31 pb 1. Events form both W ! e and W ! are used, and the transverse momentum of the W candidates is measured through the energy deposition in the calorimeter from the recoil of the W. The resulting distributions are unfolded to obtain the normalized differential cross sections as a function ...
Sensitivity of the SHiP experiment to Heavy Neutral Leptons
Ahdida, C.; et. al. (Springer Science and Business Media LLC, 2019-04-01)
Heavy Neutral Leptons (HNLs) are hypothetical particles predicted by many extensions of the Standard Model. These particles can, among other things, explain the origin of neutrino masses, generate the observed matter-antimatter asymmetry in the Universe and provide a dark matter candidate.
Citation Formats
T. A. Akmete, “Sensitivity of the ship experiment to hidden particles at the cern SPS,” M.S. - Master of Science, Middle East Technical University, 2020.