ar X iv : n uc l - ex / 0 31 10 02 v 1 3 N ov 2 00 3 A multi - detector array for high energy nuclear e + e − pair spectrosocopy
نویسنده
چکیده
A multi-detector array has been constructed for the simultaneous measurement of energyand angular correlation of electron-positron pairs produced in internal pair conversion (IPC) of nuclear transitions up to 18 MeV. The response functions of the individual detectors have been measured with mono-energetic beams of electrons. Experimental results obtained with 1.6 MeV protons on targets containing B and F show clear IPC over a wide angular range. A comparison with GEANT simulations demonstrates that angular correlations of ee pairs of transitions in the energy range between 6 and 18 MeV can be determined with sufficient resolution and efficiency to search for deviations from IPC due to the creation and subsequent decay into ee of a hypothetical short-lived neutral boson. Submitted to: Journal of Physics G PACS numbers: 07.1.+a, 14.80.-j, 23.20.En, 29.30.Dn A multi-detector array for high energy nuclear ee pair spectrosocopy 2
منابع مشابه
ar X iv : n uc l - ex / 0 31 10 05 v 1 4 N ov 2 00 3 1 Hadronic Multi - Particle Final State Measurements with CLAS at Jefferson Lab
Precision measurements in the neutrino sector are becoming increasingly feasible due to the development of relatively high-rate experimental capabilities. These important developments command renewed attention to the systematic corrections needed to interpret the data. Hadronic multi-particle final state measurements made using CLAS at Jefferson Lab, together with a broad theoretical effort tha...
متن کاملar X iv : n uc l - th / 0 41 10 83 v 1 1 9 N ov 2 00 4 Electromagnetic transitions for A = 3 nuclear systems
Recent advances in the study of pd radiative capture in a wide range of center-of-mass energy below and above deuteron breakup threshold are presented and discussed.
متن کاملar X iv : n uc l - ex / 0 00 20 14 v 1 2 9 Fe b 20 00 1 Background Studies for the Neutral Current Detector Array in the Sudbury Neutrino Observatory
An array of 3 He-filled proportional counters will be used in the Sudbury Neutrino Observatory to measure the neutral-current interaction of neutrinos and deuterium. We describe the backgrounds to this detection method.
متن کاملar X iv : n uc l - ex / 0 21 00 14 v 2 2 0 N ov 2 00 2 1 Anisotropic flow
Recent experimental results on directed and elliptic flow, theoretical developments, and new techniques for anisotropic flow analysis are reviewed.
متن کاملar X iv : n uc l - th / 0 41 10 95 v 1 2 3 N ov 2 00 4 Θ + pentaquark in the nuclear medium
We study the interaction of the Θ + pentaquark with nuclear matter associated to the KN decay channels and to the two meson cloud. We find that the potential is attractive and could be strong enough to lead to the existence of Θ + nuclear bound states.
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2003