1,537 Matching Results

Search Results

Advanced search parameters have been applied.
in subjects: "Muons"  
prev Results: 25 - 48 next
open access

Design of the muon collider isochronous storage ring lattice

Description: The muon collider would ex-tend limitations of the e{sup +} e- colliders and provide new physics potentials with a possible discovery of the heavy Higgs bosons. At the maximum energy of 2 TeV the projected luminosity is of the order of 10{sup 35} cm{sup {minus}2}s{sup {minus}1}. The colliding {mu}{sup +} {mu}{sup {minus}} bunches have to be focused to a very small transverse size of few tenths of {mu}m which is accomplished by the betatron functions at the crossing point of {beta}* = 3mm. This … more
Date: December 1, 1995
Creator: Trbojevic, D.; Courant, E. D.; Lee, S. Y.; Gallardo, J.; Palmer, B.; Tepikian, S. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Higgs Factory and Potentials

Description: Recent experimental results from LEP has generated new interest in potentials of a Higgs factory (as the first Muon collider). We present a conceptual overview of such a collider, required Luminosity, and some physics potentials. We illustrate the unlikely case where the muon radiative corrections results in a vanishing {mu}{sup +}{mu}{sup -}h vertex ({sigma} is zero), and how in such a case, the Neutral MSSM Higgs sector via resonant production of H and A may be possible at a muon collider.
Date: June 18, 2001
Creator: Parsa, Z.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Backgrounds and detector performance at a 2 x 2 TeV {mu}{sup +}{mu}{sup {minus}} collider

Description: The rich physics potential of a high-energy high-luminosity {mu}{sup +}{mu}{sup {minus}} collider and the surprising feasibility of a design attract the attention of many people these days. A few issues define the practicality of such a project, with the enormous particle background levels in a detector due to unavoidable reasons holding first place. In contrast to hadron colliders where particle backgrounds come both from interaction point (IP) and accelerator, almost all the backgrounds in th… more
Date: March 1, 1995
Creator: Foster, G. W. & Mokhov, N. V.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Superconducting RF cavities and magnets for a 4-TeV energy muon collider

Description: The accelerators must take the muon beams from {approximately} 100 MeV to 2 TeV energies within the muon lifetime for a 4 TeV energy muon collider. These constraints plus the muon decay heating seriously challenge the designs of the superconducting RF (SRF) cavities and magnets in the accelerators and collider ring. The multiple superconducting recirculation linac and the very rap8id-cycling superconducting synchrotron approach are both studied. The authors briefly introduce the technical consi… more
Date: November 1, 1997
Creator: Shu, Q.S.; Green, M.; Neuffer, D.; Summers, D.; Simrock, S. & Willen, E.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

2 {times} 2 TeV {mu}{sup +}{mu}{sup {minus}} collider: Lattice and accelerator-detector interface study

Description: The design for a high-luminosity {mu}{sup +}{mu}{sup {minus}} superconducting storage ring is presented based on first-pass calculations. Special attention is paid to two Iowa interaction regions (IR) whose optics are literally interlaced with the collider detectors. Various sources of backgrounds in IR are explored via realistic Monte Carlo simulations. An improved design of the collider lattice in the neighborhood of the interaction points (EP) is determined by the need to reduce significantl… more
Date: May 1, 1995
Creator: Gelfand, N. M. & Mokhov, N. V.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Muon Decay Asymmetries From Kol Yields Pom+M-Decays.

Description: We have examined the decay K{sub L}{sup 0} {yields} {pi}{sup 0} {mu}{sup +} {mu}{sup -} in which the branching ratio, the muon energy asymmetry and the muon decay asymmetry could be measured. In particular, we find that within the Standard Model the longitudinal polarization (PL) of the muon is proportional to the direct CP violating amplitude. On the other hand the energy asymmetry and the out-of-plane polarization (P{sub N}) depend on both indirect and direct CP violating amplitudes. Although… more
Date: June 12, 2001
Creator: Diwan, M. V.; Ma, H. & Trueman, T. L.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

A prototype lattice design for a 2 TeV {mu}{sup +} {minus} {mu}{sup {minus}} collider

Description: This is a description of a prototype lattice for a {mu}-{mu} collider. It is not intended to be a final design, that is the design for a collider lattice which will be built. This prototype design will need to be optimized as the constraints and the requirements for the collider are better understood. As this is done the present design will be replaced by a superior design. Nonetheless this prototype can be used as a benchmark and a means of identifying problems. This is a geometric design, tha… more
Date: August 1, 1995
Creator: Gelfand, N.M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Flavorful supersymmetry

Description: Weak scale supersymmetry provides elegant solutions to many of the problems of the standard model, but it also generically gives rise to excessive flavor and CP violation. We show that, if the mechanism that suppresses the Yukawa couplings also suppresses flavor changing interactions in the supersymmetry breaking parameters, essentially all the low energy flavor and CP constraints can be satisfied. The standard assumption of flavor universality in the supersymmetry breaking sector is not necess… more
Date: December 13, 2007
Creator: Nomura, Yasunori; Nomura, Yasunori; Papucci, Michele & Stolarski, Daniel
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Cosmic ray muon charge ratio in the MINOS far detector

Description: The MINOS Far Detector is a 5.4 kiloton (5.2 kt steel plus 0.2 kt scintillator plus aluminum skin) magnetized tracking calorimeter located 710 meters underground in the Soudan mine in Northern Minnesota. MINOS is the first large, deep underground detector with a magnetic field and thus capable of making measurements of the momentum and charge of cosmic ray muons. Despite encountering unexpected anomalies in distributions of the charge ratio (N{sub {mu}{sup +}}/N{sub {mu}{sup -}}) of cosmic muon… more
Date: December 1, 2005
Creator: Beall, Erik B
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries Government Documents Department
open access

Progress toward a high-energy, high luminosity {mu}{sup +}{mu}{sup {minus}} collider

Description: In the past two years, considerable progress has been made in development of the {mu}{sup +}{mu}{sup {minus}} collider concept. This collider concept could permit exploration of elementary particle physics at energy frontiers beyond the reach of currently existing and proposed electron and hadron colliders. As a benchmark prototype, we present a candidate design for a high-energy high-luminosity {mu}{sup +}{mu}{sup {minus}} collider, with E{sub cm} = 4 TeV, L = 3 {times} 10{sup 34} cm{sup {minu… more
Date: December 31, 1994
Creator: Neuffer, D. V. & Palmer, R. B.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

THE EIGHTFOLD WAY: A THEORY OF STRONG INTERACTION SYMMETRY

Description: A new model of the higher symmetry of elementary particles is introduced ln which the eight known baryons are treated as a supermultiplet, degenerate in the limit of unitary symmetry but split into isotopic spin multiplets by a symmetry-breaking term. The symmetry violation is sscribed phenomenologically to the mass differences. The baryons correspond to an eight-dimensional irreducible representation of the unitary group. The pion and K meson fit into a similar set of eight particles along wit… more
Date: March 15, 1961
Creator: Gell-Mann, M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Measurement of the average lifetime of B-hadrons produced in p{bar p} collisions at {radical}s = 1.8 TeV

Description: The average b-hadron lifetime has been measured using a high statistics sample of {ital B} {r_arrow} {ital J}/{psi}{Chi} decays recorded with the Collider Detector at Fermilab. We use a sample with an integrated luminosity of {approx} 90 {ital pb}{sup -1} recorded during the 1994-95 running period. The decay vertices of {approx} 62656 inclusive {ital J}/{psi} {r_arrow} {mu}{sup +}{mu}{sup -} candidates have been reconstructed using information from a silicon vertex-detector. The measured {ital … more
Date: August 1, 1996
Creator: Wenzel, H.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Optimization of a muon collider interaction region with respect to detector backgrounds and the heat load to the cryogenic systems

Description: In a 2 X 2 TeV {mu}{sup +}{mu}{sup -} Collider almost 15 MW of power is deposited in the machine and detector components due to the unavoidable {mu}{r_arrow}{ital e{nu}{nu}{anti {nu}}} decays. The resulting heat load to the cryogenic systems and the background levels in the collider detectors significantly exceed those in any existing or designed hadron and {ital e}{sup +}{ital e}{sup -} colliders. This paper shows that by carefully designing the final focus system, by embedding shielding and b… more
Date: October 16, 1996
Creator: Johnstone, C.J. & Mokhov, N.V.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Superconducting muon collider concepts

Description: High energy colliding beam machines for elementary particle research have grown so costly that funding for them has become problematical. The physics they would explore, however, remains compelling, so that new methods must be found to reach high energy if this physics is to be studied. One such new approach is the muon collider. This machine could reach multi-TeV collision energies with good luminosity at an affordable cost. The scenario for producing {mu}{sup +}{mu}{sup {minus}} collisions is… more
Date: September 1, 1996
Creator: Willen, E.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

ATLAS TrackingEvent Data Model -- 12.0.0

Description: In this report the event data model (EDM) relevant for tracking in the ATLAS experiment is presented. The core component of the tracking EDM is a common track object which is suited to describe tracks in the innermost tracking sub-detectors and in the muon detectors in offline as well as online reconstruction. The design of the EDM was driven by a demand for modularity and extensibility while taking into account the different requirements of the clients. The structure of the track object and th… more
Date: July 23, 2006
Creator: ATLAS; Akesson, F.; Atkinson, T.; Costa, M.J.; Elsing, M.; Fleischmann, S. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Search for Ultra High-Energy Neutrinos with AMANDA-II

Description: A search for diffuse neutrinos with energies in excess of 10{sup 5} GeV is conducted with AMANDA-II data recorded between 2000 and 2002. Above 10{sup 7} GeV, the Earth is essentially opaque to neutrinos. This fact, combined with the limited overburden of the AMANDA-II detector (roughly 1.5 km), concentrates these ultra high-energy neutrinos at the horizon. The primary background for this analysis is bundles of downgoing, high-energy muons from the interaction of cosmic rays in the atmosphere. N… more
Date: November 19, 2007
Creator: Collaboration, IceCube; Klein, Spencer & Ackermann, M.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Muon Acceleration

Description: One of the major motivations driving recent interest in FFAGs is their use for the cost-effective acceleration of muons. This paper summarizes the progress in this area that was achieved leading up to and at the FFAG workshop at KEK from July 7-12, 2003. Much of the relevant background and references are also given here, to give a context to the progress we have made.
Date: November 18, 2003
Creator: Berg, S. J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

The Development of 6061-Aluminum Windows for the MICE Liquid Absorber

Description: The thin windows for the Muon Ionization Cooling Experiment (MICE) liquid Absorber will be fabricated from 6061-T6-aluminum. The absorber and vacuum vessel thin windows are 300-mm in diameter and are 180 mm thick at the center. The windows are designed for an internal burst pressure of 0.68 MPa (100 psig) when warm. The MICE experiment design calls for changeable windows on the absorber, so a bolted window design was adopted. Welded windows offer some potential advantages over bolted windows wh… more
Date: August 24, 2005
Creator: Lau, W.; Yang, S. Q.; Green, M. A.; Ishimoto, S. & Swanson, J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Remark on the Radiative Muon Decay in the Theory With an Intermediate Vector Meson

Description: "The problem of explaining the lack of radiative muon decay in an intermediate charged vector meson theory is discussed. A possible way of introducing the charged vector meson to the theory of weak interactions is outlined in which renormalization is retained. However, if this way is used, the anomalous magnetic moment is calculated to be large, which is in contradiction with expectation."
Date: May 16, 1961
Creator: Bialynicka-Birula, Z
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
Back to Top of Screen