R. Calabrese
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View article: Luminosity measurement with the LHCb RICH detectors in Run 3
Luminosity measurement with the LHCb RICH detectors in Run 3 Open
The LHCb Ring-Imaging Cherenkov detectors are built to provide charged hadron identification over a large range of momentum. The upgraded detectors are also capable of providing an independent measurement of the luminosity for the LHCb exp…
View article: An Experimental Setup to Study Electron Transport and Thermalization in Cryogenic Para-Hydrogen Crystal Matrices
An Experimental Setup to Study Electron Transport and Thermalization in Cryogenic Para-Hydrogen Crystal Matrices Open
We present an experimental apparatus to investigate electron transport and thermalization in cryogenic para-hydrogen crystal matrices. This paper describes the techniques used to grow and characterize the cryogenic para-hydrogen crystals, …
View article: Fermionic sub-GeV Dark Matter from evaporating Primordial Black Holes at DarkSide-50
Fermionic sub-GeV Dark Matter from evaporating Primordial Black Holes at DarkSide-50 Open
We present a search for boosted dark matter from Primordial Black Holes (PBH) evaporation using the DarkSide-50 ionization-signal-only dataset corresponding to the experiment's ($12202\pm180$) ${\rm kg\: d}$ exposure. We focus on evaporati…
View article: Responsive Climate Design: Solar Neighborhoods As A Solution For Resilient Urban Planning And Energy Efficiency
Responsive Climate Design: Solar Neighborhoods As A Solution For Resilient Urban Planning And Energy Efficiency Open
Rapid urbanization and increasing reliance on fossil fuels pose complex environmental and social challenges, exacerbated by environmental degradation and climate change. In this context, photovoltaic energy emerges as a strategic alternati…
View article: Investigation of the burst phenomenon in SiPMs in liquid nitrogen
Investigation of the burst phenomenon in SiPMs in liquid nitrogen Open
Burst effect of Silicon Photomultiplier (SiPM) at cryogenic temperatures have been discovered few years ago looking at the dark count rate of SiPMs at liquid nitrogen temperatures. Bursts are trains of single signals that happen randomly a…
View article: Data from: "DarkSide-20k sensitivity to light dark matter particles"
Data from: "DarkSide-20k sensitivity to light dark matter particles" Open
These files provide expected limits from the preprint of arXiv:2407.05813, "DarkSide-20k sensitivity to light dark matter particles" and are made available by the DarkSide-20k Collaboration.
View article: Benchmarking the design of the cryogenics system for the underground argon in DarkSide-20k
Benchmarking the design of the cryogenics system for the underground argon in DarkSide-20k Open
DarkSide-20k (DS-20k) is a dark matter detection experiment under construction at the Laboratori Nazionali del Gran Sasso (LNGS) in Italy. It utilises ~100 t of low radioactivity argon from an underground source (UAr) in its inner detector…
View article: Investigation of the burst phenomenon in SiPMs at liquid nitrogen temperature
Investigation of the burst phenomenon in SiPMs at liquid nitrogen temperature Open
Burst effect of Silicon Photomultiplier (SiPM) at cryogenic temperatures have been discovered few years ago looking at the dark count rate of SiPMs at liquid nitrogen temperatures. Bursts are trains of single signals that happen randomly a…
View article: Cryogenic characterization of Hamamatsu HWB MPPCs for the DUNE photon detection system
Cryogenic characterization of Hamamatsu HWB MPPCs for the DUNE photon detection system Open
The Deep Underground Neutrino Experiment (DUNE) is a next generation experiment aimed to study neutrino oscillation. Its long-baseline configuration will exploit a Near Detector (ND) and a Far Detector (FD) located at a distance of ∼1300 k…
View article: Model-independent extraction of form factors and $|V_{cb}|$ in $\overline{B} \rightarrow D \ell^- \overlineν_\ell$ with hadronic tagging at BaBar
Model-independent extraction of form factors and $|V_{cb}|$ in $\overline{B} \rightarrow D \ell^- \overlineν_\ell$ with hadronic tagging at BaBar Open
Using the entire BaBar $Υ(4S)$ data set, the first two-dimensional unbinned angular analysis of the semileptonic decay $\overline{B} \rightarrow D \ell^- \overlineν_\ell$ is performed, employing hadronic reconstruction of the tag-side $B$ …
View article: Search for heavy neutral leptons using tau lepton decays at <i>BaBaR</i>
Search for heavy neutral leptons using tau lepton decays at <i>BaBaR</i> Open
This article presents a model-independent search for an additional, mostly sterile, heavy neutral lepton (HNL), that is capable of mixing with the Standard Model τ neutrino with a mixing strength of |Uτ4|2, corresponding to the absolute sq…
View article: Search for $B$ Mesogenesis at BABAR
Search for $B$ Mesogenesis at BABAR Open
A new mechanism has been proposed to simultaneously explain the presence of dark matter and the matter-antimatter asymmetry in the universe. This scenario predicts exotic $B$ meson decays into a baryon and a dark sector anti-baryon ($ψ_D$)…
View article: Performance of the LHCb RICH detectors during LHC Run 2
Performance of the LHCb RICH detectors during LHC Run 2 Open
The performance of the ring-imaging Cherenkov detectors at the LHCb experiment is determined during the LHC Run 2 period between 2015 and 2018. The stability of the Cherenkov angle resolution and number of detected photons with time and ru…
View article: Spectroscopy of Alkali Atoms in Solid Matrices of Rare Gases: Experimental Results and Theoretical Analysis
Spectroscopy of Alkali Atoms in Solid Matrices of Rare Gases: Experimental Results and Theoretical Analysis Open
We present an experimental and theoretical investigation of the spectroscopy of dilute alkali atoms in a solid matrix of inert gases at cryogenic temperatures, specifically Rubidium atoms in a solid Argon or Neon matrix, and related aspect…
View article: Search for an Axionlike Particle in <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>B</mml:mi></mml:math> Meson Decays
Search for an Axionlike Particle in Meson Decays Open
Axionlike particles (ALPs) are predicted in many extensions of the standard model, and their masses can naturally be well below the electroweak scale. In the presence of couplings to electroweak bosons, these particles could be emitted in …
View article: Precision measurements of the total and partial widths of the psi(2S) charmonium meson with a new complementary-scan technique in anti-p p annihilations
Precision measurements of the total and partial widths of the psi(2S) charmonium meson with a new complementary-scan technique in anti-p p annihilations Open
We present new precision measurements of the {Psi}(2S) total and partial widths from excitation curves obtained in antiproton-proton annihilations by Fermilab experiment E835 at the Antiproton Accumulator in the year 2000. A new technique …
View article: A newly observed phenomenon in the characterisation of SiPM at cryogenic temperature
A newly observed phenomenon in the characterisation of SiPM at cryogenic temperature Open
In this article we report a novel phenomenon that we observed while evaluating the performances of different models of silicon photomultiplier detectors at liquid nitrogen temperature. Bursts of consecutive events, characterized by a rate …
View article: Search for Lepton Flavor Violation in $Υ(3S)\rightarrow e^{\pm}μ^{\mp}$
Search for Lepton Flavor Violation in $Υ(3S)\rightarrow e^{\pm}μ^{\mp}$ Open
We report on the first search for electron-muon lepton flavor violation (LFV) in the decay of a $b$~quark and $b$~antiquark bound state. We look for the LFV decay $Υ(3S)\rightarrow e^{\pm}μ^{\mp}$ in a sample of 118~million $Υ(3S)$ mesons …
View article: Search for Darkonium in $e^+e^-$ Collisions
Search for Darkonium in $e^+e^-$ Collisions Open
Collider searches for dark sectors, new particles interacting only feebly with ordinary matter, have largely focused on identifying signatures of new mediators, leaving much of dark sector structures unexplored. In particular, the existenc…
View article: Spectroscopy of Rubidium atoms in solid matrices of rare gases: experimental results and theoretical analysis
Spectroscopy of Rubidium atoms in solid matrices of rare gases: experimental results and theoretical analysis Open
We present an experimental and theoretical investigation of the spectroscopy of dilute alkali atoms in a solid matrix of inert gases at cryogenic temperatures, specifically Rubidium atoms in a solid Argon or Neon matrix, and related aspect…
View article: Fundamental physics with cold radioactive atoms
Fundamental physics with cold radioactive atoms Open
The fundamental symmetries, charge conjugation (C), parity (P) and time reversal (T), play a significant role in the Standard Model (SM) of elementary particle physics. Of these, T symmetry and the combined CP symmetry are the least well u…
View article: A feasibility study for a low energy threshold particle detector in a xenon crystal
A feasibility study for a low energy threshold particle detector in a xenon crystal Open
In this paper we report on the growing of a large xenon crystal that can be used as low energy threshold particle detector for applications in dark matter searches. A large xenon crystal of ∼150 cm3 volume has been grown exploiting the Bri…
View article: New ideas on prospective low energy threshold detectors for dark matter searches
New ideas on prospective low energy threshold detectors for dark matter searches Open
Low energy threshold detectors are necessary in many frontier fields of experimental physics. In particular, these are extremely important for probing possible dark matter (DM) candidates. We present a novel detection approach that exploit…
View article: Search for a Stable Six-Quark State at BABAR
Search for a Stable Six-Quark State at BABAR Open
Recent investigations have suggested that the six-quark combination uuddss could be a deeply bound state (S) that has eluded detection so far, and a potential dark matter candidate. We report the first search for a stable, doubly strange s…
View article: Measurement of cos 2β in B⁰ → D(*)h⁰ with D→K⁰[subscript S]π⁺π⁻ decays by a combined time-dependent Dalitz plot analysis of BaBar and Belle data
Measurement of cos 2β in B⁰ → D(*)h⁰ with D→K⁰[subscript S]π⁺π⁻ decays by a combined time-dependent Dalitz plot analysis of BaBar and Belle data Open
We report measurements of sin2β and cos2β using a time-dependent Dalitz plot analysis of B⁰ → D(*)h⁰ with D→K⁰[subscript S]π⁺π⁻ decays, where the light unflavored and neutral hadron h⁰ is a π⁰, η, or ω meson. The analysis uses a combinatio…
View article: Search for the decay mode B[superscript 0] → pp[¯ over p][¯ over p]
Search for the decay mode B[superscript 0] → pp[¯ over p][¯ over p] Open
A search is presented for the four-body decay B[superscript 0] → pp[¯ over p][¯ over p] in a sample of 471 million B[¯ B] pairs collected with the BABAR detector, operated at the SLAC PEP-II asymmetric-energy e[superscript +]e[superscript …