14 research outputs found
Review of Recent Results in Charm Physics
A biased review of recent results in charm physics is presented. New results
on D0 anti-D0 mixing, rare decays of D0 and D+/-, scalar resonances in D+ and
Ds decays, and new decay modes and mass measurements in Lambda_c, Xi_c,
Omega_c, and Xi_cc are discussed.Comment: Invited talk the 9th International Conference on B-Physics at Hadron
Machines - BEAUTY 2003, Carnegie Mellon University, Pittsburgh, October
14-18, 2003. Proceedings to be published by AI
Instrumentation
In this course, given at the school in 3 parts of 75 minutes each, we will
discuss the physics of particle detection, the basic designs and working
principles of detectors, and, as an example with more details, some detectors
for particle identification.Comment: Lecture course given at the 2nd Latin American School of High Energy
Physics, San Miguel Regla, Mexico, June 1-14, 2003. To be published in a CERN
Yellow Repor
SELEX: Recent Progress in the Analysis of Charm-Strange and Double-Charm Baryons
We present recent progress in the analysis of the Omega_c^0, the Xi_cc^+ and
the Xi_cc^++.Comment: Contribution to the proceedings of HQL06, Munich, October 16th-20th
200
Measuring the masses of the charged hadrons using a RICH as a precision velocity spectrometer
The Selex experiment measured several billion charged hadron tracks with a
high precision magnetic momentum spectrometer and high precision RICH velocity
spectrometer. We have analyzed these data to simultaneously measure the masses
of all the long lived charged hadrons and anti-hadrons from the pi to the Omega
using the same detector and technique. The statistical precision achievable
with this data sample is more than adequate for 0.1% mass measurements
We have used these measurements to develop and understand the systematic
effects of a RICH as a precision velocity spectrometer with the goal of
measuring 10 masses with precision ranging from 100 KeV for the lightest to
1000 KeV for the heaviest. This requires controlling the radius measurement of
RICH rings to the ~10^{-4} level. Progress in the mass measurements and the
required RICH analysis techniques developed are discussed.Comment: Submitted to special edition of NIMA, Proceedings of RICh2010. v2 as
accepted for publicatio
Recommended from our members
Renaissance of the ~1 TeV Fixed-Target Program
This document describes the physics potential of a new fixed-target program based on a {approx} TeV proton source. Two proton sources are potentially available in the future: the existing Tevatron at Fermilab, which can provide 800 GeV protons for fixed-target physics, and a possible upgrade to the SPS at CERN, called SPS+, which would produce 1 TeV protons on target. In this paper we use an example Tevatron fixed-target program to illustrate the high discovery potential possible in the charm and neutrino sectors. We highlight examples which are either unique to the program or difficult to accomplish at other venues
Measurement of the very rare decay
The decay K+→π+νν¯
, with a very precisely predicted branching ratio of less than 10−10
,
is among the best processes to reveal indirect effects of new physics.
The NA62 experiment at CERN SPS is designed to study the K+→π+νν¯
decay and to measure its branching ratio using a decay-in-flight technique.
NA62 took data in 2016, 2017 and 2018, reaching the sensitivity of the Standard Model
for the K+→π+νν¯
decay by the analysis of the 2016 and 2017 data,
and providing the most precise measurement of the branching ratio to date
by the analysis of the 2018 data.
This measurement is also used to set limits on BR(K+→π+X
), where X
is a scalar
or pseudo-scalar particle.
The final result of the BR(K+→π+νν¯
) measurement and its interpretation in terms
of the K+→π+X
decay from the analysis of the full 2016-2018 data set is presented, and future plans and prospects are reviewed
Recommended from our members
SELEX RICH performance and physics results
SELEX took data in the 1996/7 Fixed Target Run at Fermilab. The excellent performance parameters of the SELEX RICH Detector had direct influence on the quality of the obtained physics results