[en] Recent results on P-wave charged mesons are presented. Absolute branching fractions for the decay modes D⁰→K^-π⁺ and D⁺→K^-π⁺π⁺ are also given. copyright 1995 American Institute of Physics

No abstract available

[en] We present our final results on double-pion production by muon-type neutrinos observed in a 2.4 x 10⁶ (365 000) picture exposure of the Argonne 12-foot deuterium- (hydrogen-) filled bubble chamber. The reactions νd→μ^-π^-π⁺pp/sub s/, νd→μ^-π⁺π⁰pn/sub s/, and νd→μ^-π⁺π⁺nn/sub s/ are studied. The data, which shows strong Δ(1236) production, has nucleon-π-π mass distribution peaked at low masses in all three reactions. The excitation functions for the three reactions exhibit a rapid rise over the energy range from threshold up to about 3 GeV, but thereafter the energy dependence appears less pronounced. The threshold behavior of the cross sections for these reactions is analyzed in the context of a model developed by Adjei, Dicus, and Teplitz. Data from the constrained reaction, νd→μ^-π^-π⁺pp/sub s/, satisfy the Adler conserved-vector-current test

[en] Example of observation in neutrino experiment with the nuclear photoemulsion of the charmed Esub(c)sup(0) baryon decay into LAMBDAsub(c)sup(+) and π^- is described. LAMBDAsub(c)sup(+) baryon decay occurs in the channel LAMBDAsub(c)sup(+) → SIGMAsup(+)πsup(-)πsup(+) with the following decay SIGMA⁺ → π⁺n. The DELTAsub(c)sup(+) mass value is equal to 2.300+-0.025 GeV/c², and it decays for the period (3.13+-0.02)x10^-13 c. SIGMAsub(c)sup(0) baryon mass and SIGMAsub(c)sup(0) and LAMBDAsub(c)sup(+) mass difference are equal respectively to 2.462+-0.026 GeV/c² and 0.163+-0.002 GeV/c²

[en] We report on a study of the inclusive production properties of D/D-bar mesons in pp collisions at 800 GeV/c and compare our results to measurements made at lower energies and to the expectations of the QCD fusion model

[en] We report the results of an experiment on search for decays of charmed particles. Type BR-2 cryogenically sensitive nuclear emulsion placed in the 15-foot bubble chamber was exposed to a beam of muon neutrinos with a broad energy spectrum in the FNAL accelerator. We give an analysis of five recorded decays of short-lived particles, four of which are interpreted as decays of the charmed Λ⁺/sub c/ baryon and D⁺, D⁰, and D⁰ mesons

[en] The authors use ν/sub μ/-deuteron reactions into exclusive multipion final states to determine the extent to which atmospheric ν interactions can imitate nucleon decay. For decays N → iota/sup C/π/sup C/π/sup C/ (iota/sup C/π/sup C/π/sup C/π⁰), neutrinos induce background events at the rate 0.07 +- 0.06 (0.03 +- 0.02) per kiloton year. By requiring a multipion final state to be consistent with a rho, ω, or eta, a five-fold reduction of the background is obtained. Thus present-generation experiments are capable of searching for such decays at a lifetime level of many kiloton years corresponding to many kiloton years of detector exposure. Events containing a visible strange particle are also under analysis

[en] We use ν/sub μ/-deuteron reactions into exclusive multipion final states to determine the extent to which atmospheric ν interactions can imitate nucleon decay. For decays N→l/sup c/π/sup c/π/sup c/ (l/sup c/π/sup c/π/sup c/π⁰), neutrinos induce background events at the rate 0.07 +- 0.06 (0.03 +- 0.02) per kiloton year. By requiring a multipion final state to be consistent with a rho, ω, or eta, a fivefold reduction of the background is obtained. Thus present-generation experiments are capable of searching for such decays at a lifetime level corresponding to many kiloton years of detector exposure

[en] The extent to which atmospheric neutrino interactions can mimic nucleon decay into modes with a strange particle in the final state is evaluated using ν/sub μ/-deuterium interactions recorded by the 12-Foot Bubble Chamber at the ANL Zero Gradient Synchrotron. Event distributions representative of atmospheric neutrinos with 1< E/sub ν/<5 GeV are studied. Such neutrino interactions in massive underground detectors will yield K⁰ and K⁺ mesons with respective rates of 1.5 +- 0.8 and 4.2 +- 2.3 per kiloton year. However, the neutrino-induced events have final-state invariant mass and net momentum which are distinctly different from the values that characterize nucleon decay. Consequently, at lifetime levels corresponding to ten kiloton years of detector exposure, experimental searches capable of reconstructing these variables will not encounter substantial neutrino background for nucleon-decay modes leading to K mesons in the final state

[en] The development of technology in the era of the industrial revolution 4.0 have led to the emergence of the Internet of Things (IoT). IoT allows an electronic devices to send and capture data through the internet and provides more methods of data interoperability. Nowadays, IoT plays an important role not only in communication, but also in monitoring, recording, storage and display. Currently, the application of IoT in health monitoring system to monitor conditions in the vital signs of the human body becomes interesting issues as an effort to prevent disease. In this article, a system that can monitor vital sign parameters and transmits data through wireless communication was developed, then those data transferred to the network via Wi-Fi modules. Data can be accessed at any time and represent the patient‘s current condition. So that a nurse or doctor can monitor the patient‘s data in real time through an application software on smartphone. Overall the system developed consists of DFRobot Firebeetle ESP32 as a controller that has been equipped with Wi-Fi modules, Sensor MAX30100 as a pulse detector and MLX90614 sensor as a body temperature detector. Also added is a GPS (Global Positioning System) module to detect patient locations in real time and an OLED (Organic light-emitting diode) module as data viewer. The test results show that the overall system was worked properly with a 6.5% error for pulse detection, 4% for oxygen detection and 1.7% for body temperature. As for the accuracy of the position generated by GPS that is 7 meters. (paper)