scholarly journals Search for WIMPs with background evaluation in a fiducial volume by XMASS-I

2017 ◽  
Author(s):  
Hiroshi Ogawa ◽  
Keyword(s):  
Fiducial Volume

scholarly journals Search for proton decay via p→e+π0 and p→μ+π0 with an enlarged fiducial volume in Super-Kamiokande I-IV

2020 ◽  
Vol 102 (11) ◽  
Author(s):  
A. Takenaka ◽  
K. Abe ◽  
C. Bronner ◽  
Y. Hayato ◽  
M. Ikeda ◽  
...  
Keyword(s):  
Proton Decay ◽  
Fiducial Volume

scholarly journals Measurements of inclusive and differential cross-sections of combined $$ t\overline{t}\gamma $$ and tWγ production in the eμ channel at 13 TeV with the ATLAS detector

2020 ◽  
Vol 2020 (9) ◽  
Author(s):  
G. Aad ◽  
◽  
B. Abbott ◽  
D. C. Abbott ◽  
A. Abed Abud ◽  
...  
Keyword(s):  
Cross Sections ◽  
Differential Cross ◽  
Theoretical Calculations ◽  
Top Quarks ◽  
Atlas Detector ◽  
Proton Collision ◽  
Differential Cross Sections ◽  
Proton Proton ◽  
Fiducial Volume ◽  
Proton Proton Collision

Abstract Inclusive and differential cross-sections for the production of top quarks in association with a photon are measured with proton-proton collision data corresponding to an integrated luminosity of 139 fb−1. The data were collected by the ATLAS detector at the LHC during Run 2 between 2015 and 2018 at a centre-of-mass energy of 13 TeV. The measurements are performed in a fiducial volume defined at parton level. Events with exactly one photon, one electron and one muon of opposite sign, and at least two jets, of which at least one is b-tagged, are selected. The fiducial cross-section is measured to be $$ {39.6}_{-2.3}^{+2.7} $$ 39.6 − 2.3 + 2.7 fb. Differential cross-sections as functions of several observables are compared with state-of-the-art Monte Carlo simulations and next-to-leading-order theoretical calculations. These include cross-sections as functions of photon kinematic variables, angular variables related to the photon and the leptons, and angular separations between the two leptons in the event. All measurements are in agreement with the predictions from the Standard Model.

scholarly journals Solar neutrino detection sensitivity in DARWIN via electron scattering

2020 ◽  
Vol 80 (12) ◽  
Author(s):  
J. Aalbers ◽  
◽  
F. Agostini ◽  
S. E. M. Ahmed Maouloud ◽  
M. Alfonsi ◽  
...  
Keyword(s):  
Electron Scattering ◽  
Solar Neutrino ◽  
Solar Neutrinos ◽  
Double Beta Decay ◽  
Detection Sensitivity ◽  
Recoil Energy ◽  
Capture Process ◽  
Fiducial Volume ◽  
Electroweak Mixing Angle ◽  
Low Metallicity

AbstractWe detail the sensitivity of the proposed liquid xenon DARWIN observatory to solar neutrinos via elastic electron scattering. We find that DARWIN will have the potential to measure the fluxes of five solar neutrino components: pp, $$^7$$ 7 Be, $$^{13}$$ 13 N, $$^{15}$$ 15 O and pep. The precision of the $$^{13}$$ 13 N, $$^{15}$$ 15 O and pep components is hindered by the double-beta decay of $$^{136}$$ 136 Xe and, thus, would benefit from a depleted target. A high-statistics observation of pp neutrinos would allow us to infer the values of the electroweak mixing angle, $$\sin ^2\theta _w$$ sin 2 θ w , and the electron-type neutrino survival probability, $$P_{ee}$$ P ee , in the electron recoil energy region from a few keV up to 200 keV for the first time, with relative precision of 5% and 4%, respectively, with 10 live years of data and a 30 tonne fiducial volume. An observation of pp and $$^7$$ 7 Be neutrinos would constrain the neutrino-inferred solar luminosity down to 0.2%. A combination of all flux measurements would distinguish between the high- (GS98) and low-metallicity (AGS09) solar models with 2.1–2.5$$\sigma $$ σ significance, independent of external measurements from other experiments or a measurement of $$^8$$ 8 B neutrinos through coherent elastic neutrino-nucleus scattering in DARWIN. Finally, we demonstrate that with a depleted target DARWIN may be sensitive to the neutrino capture process of $$^{131}$$ 131 Xe.

On-line fiducial volume trigger for a small, rapid cycling bubble chamber

1984 ◽  
Vol 222 (3) ◽  
pp. 441-447 ◽  
Author(s):  
R. Bizzarri ◽  
F. Cesaroni ◽  
G. Ciapetti ◽  
E. Di Capua ◽  
M. Iori ◽  
...  
Keyword(s):  
Bubble Chamber ◽  
Rapid Cycling ◽  
Fiducial Volume ◽  
On Line

scholarly journals Measurements of the Reactor Antineutrino with Solid State Scintillation Detector

2018 ◽  
Vol 46 ◽  
pp. 1860044
Author(s):  
I. Alekseev ◽  
V. Belov ◽  
V. Brudanin ◽  
M. Danilov ◽  
V. Egorov ◽  
...  
Keyword(s):  
Solid State ◽  
Reactor Core ◽  
Sensitive Volume ◽  
Solid State Detector ◽  
Preliminary Results ◽  
Reactor Antineutrino ◽  
Detector Position ◽  
Fiducial Volume ◽  
Modern Physics ◽  
Borated Polyethylene

Measurements of reactor antineutrino play an important role in the efforts at the frontier of the modern physics. The DANSS collaboration presents preliminary results of a one year run with a cubic meter solid state detector placed below 3.1 GW industrial light water reactor. The experiment is sensitive to sterile neutrino in the most interesting region of mixing parameter space. 2500 scintillation strips of the sensitive volume of the detector have multilayer passive shielding of copper, lead and borated polyethylene and active muon veto. Detector position below the reactor gives an advantage of overburden about 50 m of water equivalent providing factor of six in cosmic muon suppression and eliminating fast neutrons.The detector is placed on a vertically movable platform which allows to change the distance to the reactor core center in the range 10.7-12.7 m within a few minutes. The strips are read out individually by SiPMs and in groups of 50 by PMTs. 5000 inverse beta-decay events per day are collected in the fiducial volume, which is 78% of the whole detector, at the position closest to the reactor. Overburden, active veto and good segmentation of the detector result in an excellent signal to background ratio. The talk is dedicated to the data analysis and preliminary results. The experiment status is also presented.

Fiducial Volume of the Edelweiss Germanium Bolometers for Dark Matter Search Using Cosmogenic Activation

2012 ◽  
Vol 167 (5-6) ◽  
pp. 1154-1159
Author(s):  
J. Domange ◽  
◽  
E. Armengaud ◽  
A. Broniatowski ◽  
G. Gerbier
Keyword(s):  
Dark Matter ◽  
Dark Matter Search ◽  
Fiducial Volume ◽  
Cosmogenic Activation

scholarly journals Precise predictions for double-Higgs production via vector-boson fusion

2020 ◽  
Vol 80 (11) ◽  
Author(s):  
Frédéric A. Dreyer ◽  
Alexander Karlberg ◽  
Jean-Nicolas Lang ◽  
Mathieu Pellen
Keyword(s):  
Cross Sections ◽  
Vector Boson ◽  
Percent Level ◽  
Higgs Production ◽  
Vector Boson Fusion ◽  
Leading Order ◽  
Fiducial Volume ◽  
Theoretical Predictions ◽  
Set Up ◽  
First Time

AbstractTheoretical predictions with next-to-next-to-leading order (NNLO) QCD accuracy combined with the next-to-leading order (NLO) electroweak (EW) corrections are presented for differential observables of the double-Higgs production process via vector-boson fusion. While the QCD corrections were previously known, the EW ones are computed here for the first time. The numerical results are obtained for a realistic experimental set-up at the LHC and are presented in the form of fiducial cross sections and differential distributions. Within this setup we find that the VBF approximation employed in the NNLO QCD correction is accurate at the sub-percent level. We find that the NLO EW corrections within the fiducial volume are $$-\,6.1\%$$ - 6.1 % , making them of almost the same order as the NLO QCD corrections. In some kinematic regions they can grow as large as $$-\,30\%$$ - 30 % making them the dominant radiative corrections. When the EW corrections are combined with the NNLO QCD corrections we find a total correction of $$-\,14.8\%$$ - 14.8 % . The results presented here thus comprise the state-of-the-art theoretical predicition for the double-Higgs production via vector-boson fusion, which will be of value to the high-luminosity programme at the LHC.

Optimization of Cryogenic Ge Detector Equipped with NbSi Thin Film Thermometers: Fiducial Volume and Energy Resolution

2008 ◽  
Vol 151 (3-4) ◽  
pp. 877-883 ◽  
Author(s):  
Y. Dolgorouky ◽  
S. Marnieros ◽  
E. Olivieri ◽  
L. Bergé ◽  
M. Chapellier ◽  
...  
Keyword(s):  
Thin Film ◽  
Energy Resolution ◽  
Fiducial Volume ◽  
Ge Detector

scholarly journals Sensitivity of the DARWIN observatory to the neutrinoless double beta decay of $$^{136}$$Xe

2020 ◽  
Vol 80 (9) ◽  
Author(s):  
F. Agostini ◽  
◽  
S. E. M. Ahmed Maouloud ◽  
L. Althueser ◽  
F. Amaro ◽  
...  
Keyword(s):  
Beta Decay ◽  
Time Projection Chamber ◽  
Region Of Interest ◽  
Neutrinoless Double Beta Decay ◽  
Double Beta Decay ◽  
Monte Carlo Simulation Study ◽  
Background Rate ◽  
Fiducial Volume ◽  
Particle Dark Matter ◽  
Time Projection

AbstractThe DARWIN observatory is a proposed next-generation experiment to search for particle dark matter and for the neutrinoless double beta decay of $$^{136}$$ 136 Xe. Out of its 50 t total natural xenon inventory, 40 t will be the active target of a time projection chamber which thus contains about 3.6 t of $$^{136}$$ 136 Xe. Here, we show that its projected half-life sensitivity is $$2.4\times {10}^{27}\,{\hbox {year}}$$ 2.4 × 10 27 year , using a fiducial volume of 5 t of natural xenon and 10 year of operation with a background rate of less than 0.2 events/(t $$\cdot $$ ·  year) in the energy region of interest. This sensitivity is based on a detailed Monte Carlo simulation study of the background and event topologies in the large, homogeneous target. DARWIN will be comparable in its science reach to dedicated double beta decay experiments using xenon enriched in $$^{136}$$ 136 Xe.

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