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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: 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: Quantum computing for data analysis in high energy physics
Quantum computing for data analysis in high energy physics Open
Some of the biggest achievements of the modern era of particle physics, such as the discovery of the Higgs boson, have been made possible by the tremendous effort in building and operating large-scale experiments like the Large Hadron Coll…
View article: ADMIRA project: teaching particle physics at high school with Timepix detectors
ADMIRA project: teaching particle physics at high school with Timepix detectors Open
This paper presents the case for how students can be helped to increase their scientific vocation by experimental work and the introduction of particle physics into pre-university studies. These two ideas are the two main lines of work of …
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: Calibration and performance of the LHCb calorimeters in Run 1 and 2 at the LHC
Calibration and performance of the LHCb calorimeters in Run 1 and 2 at the LHC Open
The calibration and performance of the LHCb Calorimeter system in Run 1 and 2 at the LHC are described. After a brief description of the sub-detectors and of their role in the trigger, the calibration methods used for each part of the syst…
View article: Search for the rare decay B0→D*0γ
Search for the rare decay B0→D*0γ Open
SLAC for its support and the kind hospitality extended to them. This work is supported by the US Department of Energy and National Science Foundation, the Natural Sciences and Engineering Research Council (Canada), Institute of High Energy…
View article: Measurement of B→Xγ Decays and Determination of |Vtd/Vts|
Measurement of B→Xγ Decays and Determination of |Vtd/Vts| Open
Using a sample of 383 × 10 6 B ¯¯¯ B events collected by the BABAR experiment, we measure sums of seven exclusive final states B → X d ( s ) γ , where X d ( X s ) is a nonstrange (strange) charmless hadronic system in the mass range 0.6 - …
View article: Search for B+→ℓ+νℓ recoiling against B−→D0ℓ−¯νX
Search for B+→ℓ+νℓ recoiling against B−→D0ℓ−¯νX Open
We present a search for the decay B + → ℓ + ν ℓ ( ℓ = τ , μ , or e ) in ( 458.9 ± 5.1 ) × 10 6 B ¯¯¯ B pairs recorded with the BABAR detector at the PEP-II B -factory. We search for these B decays in a sample of B + B − events where one B …
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 the Spectral Function for the τ⁻→ K⁻K[subscript S]ν[subscript τ] Decay
Measurement of the Spectral Function for the τ⁻→ K⁻K[subscript S]ν[subscript τ] Decay Open
The decay τ⁻→K⁻K[subscript S]ν[subscript τ] has been studied using 430×10⁶ e⁺e⁻→τ⁺τ⁻ events produced at a center-of-mass energy around 10.6 GeV at the PEP-II collider and studied with the BABAR detector. The mass spectrum of the K⁻K[subscr…
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 …
View article: Study of ϒ(1S) Radiative Decays to γπ[superscript +]π[superscript −] and γ K[superscript +]K[superscript −]
Study of ϒ(1S) Radiative Decays to γπ[superscript +]π[superscript −] and γ K[superscript +]K[superscript −] Open
We study the ϒ(1S) radiative decays to γπ[superscript +}]π[superscript -] and γK[superscript +]Kp[superscript -] using data recorded with the BABAR detector operating at the SLAC PEP-II asymmetric-energy e[superscript +]e[superscript -] co…
View article: Study of the process e[superscript +] e[superscript −] → π[supsercript +]π[superscript −]η using initial state radiation
Study of the process e[superscript +] e[superscript −] → π[supsercript +]π[superscript −]η using initial state radiation Open
We study the process e[superscript +]e[superscript -] →π[superscript +]π[superscript -]ηγ, where the photon is radiated from the initial state. About 8000 fully reconstructed events of this process are selected from the BABAR data sample w…
View article: Measurement of the e [superscript +] e [superscript −] → π [superscript +] π [superscript −] π [superscript 0] π [superscript 0] cross section using initial-state radiation at BABAR
Measurement of the e [superscript +] e [superscript −] → π [superscript +] π [superscript −] π [superscript 0] π [superscript 0] cross section using initial-state radiation at BABAR Open
The process e [superscript +] e [superscript -] →π [superscript +] π [superscript -] 2π [superscript 0] γ is investigated by means of the initial-state radiation technique, where a photon is emitted from the incoming electron or positron. …
View article: Evidence for CP Violation in B⁺→K*(892)⁺π⁰ from a Dalitz Plot Analysis of B⁺→K[subscript S]⁰π⁺π⁰ Decays
Evidence for CP Violation in B⁺→K*(892)⁺π⁰ from a Dalitz Plot Analysis of B⁺→K[subscript S]⁰π⁺π⁰ Decays Open
We report a Dalitz plot analysis of charmless hadronic decays of charged B mesons to the final state K[subscript S]⁰π⁺π⁰ using the full BABAR data set of 470.9±2.8 million BB[over ¯] events collected at the Υ(4S) resonance. We measure the …
View article: First Observation of a Baryonic B0s Decay
First Observation of a Baryonic B0s Decay Open
We report the first observation of a baryonic Bs0 decay, Bs0→p Λ ¯K- , using proton-proton collision data recorded by the LHCb experiment at center-of-mass energies of 7 and 8 TeV, corresponding to an integrated luminosity of 3.0 fb-1. The…
View article: Measurement of the e[supescript +]e[subscript −] → K[superscript 0][subscript s]K[superscript ±]π[superscript ∓]π[superscript 0] and K[superscript 0][subscript s]K[superscript ±]π[superscript ∓]η cross sections using initial-state radiation
Measurement of the e[supescript +]e[subscript −] → K[superscript 0][subscript s]K[superscript ±]π[superscript ∓]π[superscript 0] and K[superscript 0][subscript s]K[superscript ±]π[superscript ∓]η cross sections using initial-state radiation Open
The processes e[superscript +]e[superscript -] →K[superscript 0][subscript S]K[superscript ±]π[superscript ∓]π[superscript 0] and e[superscript +]e[superscript -] →K[superscript 0][subscript S]K[supercript ±]π[superscript ∓]η are studied o…
View article: Measurement of the inclusive electron spectrum from B meson decays and determination of |V[subscript ub]|
Measurement of the inclusive electron spectrum from B meson decays and determination of |V[subscript ub]| Open
Based on the full BABAR data sample of 466.5 million B[bar over B] pairs, we present measurements of the electron spectrum from semileptonic B meson decays. We fit the inclusive electron spectrum to distinguish Cabibbo-Kobayashi-Maskawa (C…
View article: Dalitz Plot Analyses of J/ψ→π+π−π0 , J/ψ→K+K−π0 , and J/ψ→Ks0K±π∓ Produced via E+e− Annihilation with Initial-State Radiation
Dalitz Plot Analyses of J/ψ→π+π−π0 , J/ψ→K+K−π0 , and J/ψ→Ks0K±π∓ Produced via E+e− Annihilation with Initial-State Radiation Open
We study the processes e+e-→γISRJ/ψ, where J/ψ→π+π-π0, J/ψ→K+K-π0, and J/ψ→KS0K±π∓ using a data sample of 519 fb-1 recorded with the BABAR detector operating at the SLAC PEP-II asymmetric-energy e+e- collider at center-of-mass energies at …
View article: Search for a muonic dark force at<i>BaBar</i>
Search for a muonic dark force at<i>BaBar</i> Open
Many models of physics beyond the standard model predict the existence of new Abelian forces with new gauge bosons mediating interactions between "dark sectors" and the standard model. We report a search for a dark boson Z' coupling only t…
View article: Tests of CPT symmetry in B0-B¯0 mixing and in B0→cc¯K0 decays
Tests of CPT symmetry in B0-B¯0 mixing and in B0→cc¯K0 decays Open
Using the eight time dependences e-Γt(1+CicosΔmt+SisinΔmt) for the decays ϒ(4S)→B0B 0→fjfk, with the decay into a flavor-specific state fj=±X before or after the decay into a CP eigenstate fk=cc KS,L, as measured by the BABAR experiment, w…
View article: Tests of CPT symmetry in B[superscript 0] −[bar over B][superscript ]0 mixing and in B[superscript 0] → c[bar over c] K[superscript 0] decays
Tests of CPT symmetry in B[superscript 0] −[bar over B][superscript ]0 mixing and in B[superscript 0] → c[bar over c] K[superscript 0] decays Open
Using the eight time dependences e[superscript -Γt](1+C[subscript i]cosΔmt+S[subscript i]sinΔmt) for the decays Υ(4S)→B[superscript 0][bar over B][superscript 0]→f[subscript j]f[subscript k], with the decay into a flavor-specific state f[s…
View article: Study of B→Kππγ decays at the BaBar experiment
Study of B→Kππγ decays at the BaBar experiment Open
The preliminary results obtained from the analysis of the B meson radiative decays to Kππγ, recorded at the BaBar experiment, are presented. A preliminary measurement of the time-dependent CP asymmetry related to the hadronic CP eigenstate…