Exotic highly ionising particles at the LHC

De Roeck, A.; Mermod, P.; Sloan, T.; Milstead, D.; Katre, A.

doi:10.1140/epjc/s10052-012-1985-2

Article
Report number	arXiv:1112.2999
Title	Exotic highly ionising particles at the LHC
Related title	Exotic highly ionising particles at the LHC
Author(s)	De Roeck, A. (CERN ; Antwerp U. ; UC, Davis) ; Katre, A. (Geneva U.) ; Mermod, P. (Geneva U. ; Oxford U.) ; Milstead, D. (Stockholm U.) ; Sloan, T. (Lancaster U.)
Publication	2012-04-24
Imprint	14 Dec 2011
Number of pages	18
Note	Comments: 18 pages, 48 figures, submitted to Eur. Phys. J. C 20 pages, 52 figures
In:	Eur. Phys. J. C 72 (2012) 1985
DOI	10.1140/epjc/s10052-012-1985-2
Subject category	Particle Physics - Phenomenology
Accelerator/Facility, Experiment	CERN LHC
Abstract	The experiments at the Large Hadron Collider (LHC) are able to discover or set limits on the production of exotic particles with TeV-scale masses possessing values of electric and/or magnetic charge such that they appear as highly ionising particles (HIPs). In this paper the sensitivity of the LHC experiments to HIP production is discussed in detail. It is shown that a number of different detection methods are required to investigate as fully as possible the charge-mass range. These include direct detection as the HIPs pass through detectors and, in the case of magnetically charged objects, the so-called induction method with which monopoles which stop in accelerator and detector material could be observed. The benefit of using complementary approaches to HIP detection is discussed.

$noimg: Typical depth $d$ (from the interaction point to the exit of the detector) and thickness d$x$ (in g$\cdot$cm$^{-2}$) for components of the ATLAS, CMS, LHCb and ALICE detectors, in pseudorapidity ranges for which they have near 100\% geometrical acceptance. The values are obtained from Refs.~\cite{ATLAS08,CMS08,LHCb08,ALICE08}.: Typical geometrical acceptance and thickness d$x$ of materials in front of the MoEDAL detectors for various pseudorapidity ranges. The values are obtained from Refs.~\cite{Moedal,VHCC}.: Average and integrated luminosities at the ATLAS, CMS, LHCb and ALICE interaction points corresponding to what can roughly be expected from 7-8 TeV $pp$ collisions by the end of 2012~\cite{lumiplans2012}.$ $Calculated ionisation energy loss d$E$/d$x$ as a function of velocity $\beta$ for HIPs possessing electric charge (with $|z|=68.5$, left) and magnetic charge (with $|g|=g_D$, right) in various materials. Equations~\ref{Bethe} and~\ref{Bethe_mag} were used. Varying the correction factors by $\pm 2$ inside the brackets of the equations yields a relative uncertainty of 15\% in the energy loss.$ $The approximate trajectory of a $m=1000$ GeV monopole assuming a uniform solenoid magnetic field in the ALICE ($B=0.5$~T), ATLAS ($B=2.0$~T) and CMS ($B=3.8$~T) detectors at $\eta=0$, for $|g|=g_D$ (left) and $|g|=2g_D$ (right), and corresponding to initial kinetic energies for punching through the inner detector: $E_{kin}=100$~GeV (left) and $E_{kin}=500$~GeV (right).$ Show more plots

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Zapis kreiran 2011-12-14, zadnja izmjena 2022-03-31

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