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Using the entire sample of 467 million Y(4S) --> BBbar decays collected with the BaBar detector at the PEP-II asymmetric-energy B factory at SLAC, we perform a "GLW" analysis of B+- --> D K+- decays, using decay modes in which the neutral D…

High Energy Physics - Experiment · Physics 2011-02-16 The BABAR Collaboration , P. del Amo Sanchez

We present our progress towards a new measurement of the electron electric dipole moment using a beam of YbF molecules. Data are currently being taken with a sensitivity of 10^{-27} e.cm / \sqrt{day}.

Atomic Physics · Physics 2017-08-23 J. J. Hudson , P. C. Condylis , H. T. Ashworth , M. R. Tarbutt , B. E. Sauer , E. A. Hinds

Time-resolved beam parameters measurement system can be achieve electron beam energy in LIA. In this paper introduce work principle and method of time-resolved beam parameters measurement system. Show the experiment layout of energy…

Accelerator Physics · Physics 2014-01-28 Yuan Wang

The Beam Loss Monitors (BLM) are designed to measure the position and amount of beam loss in accelerators. In this article, we have studied the 3 GeV electron losses in the storage ring and secondary particles from the losses on the beam…

Accelerator Physics · Physics 2021-01-12 Seyed Morteza Esmaeili , Seyed Amir Hossein Feghhi

Gallium solar neutrino experiments have historically used radiochemical counting to determine the event rate. A detector which directly measures the ejected electron and de-excitation gamma could reduce background counting rates by way of a…

High Energy Physics - Experiment · Physics 2024-11-27 Jonathan Folkerts , Nick Solomey , Brooks Hartsock , Tyler Nolan , Octavio Pacheco , Gregory Pawloski

The understanding of the instrumental response of the GLAST Burst Monitor BGO detectors at energies above the energy range which is accessible by common laboratory radiation sources (< 4.43 MeV), is important, especially for the later…

The Duke storage ring is a dedicated driver for the storage ring based oscillator free-electron lasers (FELs), and the High Intensity Gamma-ray Source (HIGS). It is operated with a beam current ranging from about 1 mA to 100 mA per bunch…

Accelerator Physics · Physics 2013-11-20 Xu Wei , Li Jing-Yi , Huang Sen-Lin , W. Z. Wu , H. Hao , P. Wang , Y. K. Wu

We propose two novel methods for testing the standard model using external photon conversion at a high-luminosity e^+e^- B factory proposed recently. The first method is to measure the mixing-induced CP-violation parameter S_{pi^0pi^0} in…

High Energy Physics - Experiment · Physics 2007-05-23 H. Ishino , M. Hazumi , M. Nakao , T. Yoshikawa

The measurement of the polarized gluon distribution function Delta_G/G using current-target correlations in the Breit frame of deep inelastic scattering is proposed. The approach is illustrated using a Monte Carlo simulation of polarized…

High Energy Physics - Phenomenology · Physics 2014-11-17 I. V. Akushevich , S. V. Chekanov

A bubble chamber has been developed to be used as an active target system for low energy nuclear astrophysics experiments. Adopting ideas from dark matter detection with superheated liquids, a detector system compatible with gamma-ray beams…

The Na59 collaboration aims to measure the linear polarization of its photon beam in the 20-170 GeV range, using an aligned thin crystal. The tracks of $e^-/e^+$ pairs created in two different crystal targets, germanium and diamond, are…

High Energy Physics - Experiment · Physics 2011-07-19 G. Unel

We present a new powerful liquid hydrogen target developed for the precise study of parity violating electron scattering on hydrogen and deuterium. This target has been designed to have minimal target density fluctuations under the heat…

The CMS Beam Conditions and Radiation Monitoring System, BRM, will support beam tuning, protect the CMS detector from adverse beam conditions, and measure the accumulated dose close to or inside all sub-detectors. It is composed of…

Instrumentation and Detectors · Physics 2014-11-20 A. Bell , E. Castro , R. Hall-Wilton , W. Lange , W. Lohmann , A. Macpherson , M. Ohlerich , N. Rodriguez , V. Ryjov , R. S. Schmidt , R. L. Stone

BICEP is a ground-based millimeter-wave bolometric array designed to target the primordial gravity wave signature on the polarization of the cosmic microwave background (CMB) at degree angular scales. Currently in its third year of…

This paper deals with an analytical modeling of heat transfers simulating a new radiation calorimeter operating in a temperature range from -50 {\deg}C to 150 {\deg}C. The aim of this modeling is the evaluation of the feasibility and…

Instrumentation and Detectors · Physics 2016-01-11 Elysée Obame Ndong , Olivier Gallot-Lavallée , Frédéric Aitken

Gas Electron Multiplier (GEM) is one of the mostly used gaseous detectors in the High Energy Physics (HEP) experiments. GEMs are widely used as tracking devices due to their high-rate handling capability and good position resolution. An…

High Energy Physics - Experiment · Physics 2024-01-23 S. Mandal , S. Chatterjee , A. Sen , S. Gope , S. Dhani , A. C. Hegde , M. Chatterjee , S. Das , S. Biswas

A powerful way to test models with feebly interacting particles in the MeV to GeV mass range is through proton beam-dump experiments. In this paper, we compare the current sensitivity of CERN's NA62 experiment running in beam-dump mode with…

High Energy Physics - Experiment · Physics 2026-04-21 Babette Döbrich , Jan Jerhot , Karim Massri , Jonathan L. Schubert , Tommaso Spadaro

As the LHC beams cannot be polarized, introducing a dense polarized gas target at the LHCb experiment at CERN, to be operated concurrently with beam-beam collisions, will facilitate fixed-target interactions to explore a new energy regime…

Measurements of the cross sections for charged current deep inelastic scattering in e+p collisions with a longitudinally polarised positron beam are presented. The measurements are based on a data sample with an integrated luminosity of 132…

High Energy Physics - Experiment · Physics 2012-08-27 ZEUS Collaboration