M. Rotondo
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View article: LHCspin: a Polarized Gas Target for LHC
LHCspin: a Polarized Gas Target for LHC Open
The goal of the LHCspin project is to develop innovative solutions for measuring the 3D structure of nucleons in high-energy polarized fixed-target collisions at LHC, exploring new processes and exploiting new probes in a unique, previousl…
View article: HFLAV input to the 2026 update of the European Strategy for Particle Physics
HFLAV input to the 2026 update of the European Strategy for Particle Physics Open
Heavy-flavour physics is an essential component of the particle-physics programme, offering critical tests of the Standard Model and far-reaching sensitivity to physics beyond it. Experiments such as LHCb, Belle II, and BESIII drive progre…
View article: Averages of $b$-hadron, $c$-hadron, and $τ$-lepton properties as of 2023
Averages of $b$-hadron, $c$-hadron, and $τ$-lepton properties as of 2023 Open
This paper reports world averages of measurements of $b$-hadron, $c$-hadron, and $τ$-lepton properties obtained by the Heavy Flavour Averaging Group using results available before October 2023. In rare cases, significant results obtained s…
View article: Model-independent extraction of form factors and <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mo stretchy="false">|</mml:mo><mml:msub><mml:mi>V</mml:mi><mml:mrow><mml:mi>c</mml:mi><mml:mi>b</mml:mi></mml:mrow></mml:msub><mml:mo stretchy="false">|</mml:mo></mml:math> in <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mover accent="true"><mml:mi>B</mml:mi><mml:mo stretchy="false">¯</mml:mo></mml:mover><mml:mo stretchy="false">→</mml:mo><mml:mi>D</mml:mi><mml:msup><mml:mo>ℓ</mml:mo><mml:mo>−</mml:mo></mml:msup><mml:msub><mml:mover accent="true"><mml:mi>ν</mml:mi><mml:mo stretchy="false">¯</mml:mo></mml:mover><mml:mo>ℓ</mml:mo></mml:msub></mml:math> with hadronic tagging at <i>BABAR</i>
Model-independent extraction of form factors and in with hadronic tagging at <i>BABAR</i> Open
Using the entire ϒ(4S) dataset, the first two-dimensional unbinned angular analysis of the semileptonic decay B¯→Dℓ−ν¯ℓ is performed, employing hadronic reconstruction of the tag-side B meson from ϒ(4S)→BB¯. Here, ℓ denotes the light charg…
View article: Lepton Flavor Universality Tests in Semileptonic b→c Decays
Lepton Flavor Universality Tests in Semileptonic b→c Decays Open
Semileptonic decays of b- to c-hadrons provide an exciting environment to probe new physics and currently present some of the most compelling anomalies in the field of flavor physics. Measurements of the lepton flavor universality ratios R…
View article: Inclusive semileptonic $$ {B}_s^0 $$ meson decays at the LHC via a sum-of-exclusive modes technique: possibilities and prospects
Inclusive semileptonic $$ {B}_s^0 $$ meson decays at the LHC via a sum-of-exclusive modes technique: possibilities and prospects Open
A bstract We propose an approach for measuring the moments of the hadronic invariant mass distribution in semileptonic $$ {B}_s^0 $$ meson decays using a sum-of-exclusive technique. Using the present and foreseen knowledge about exclu…
View article: Inclusive semileptonic $B_{s}^{0}$ meson decays at the LHC via a sum-of-exclusive modes technique: possibilities and prospects
Inclusive semileptonic $B_{s}^{0}$ meson decays at the LHC via a sum-of-exclusive modes technique: possibilities and prospects Open
We propose an approach for measuring the moments of the hadronic invariant mass distribution in semileptonic $B_{s}^{0}$ meson decays using a sum-of-exclusive technique. Using the present and foreseen knowledge about exclusive semileptonic…
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 Evidence of Baryogenesis and Dark Matter in <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow><mml:mi>B</mml:mi></mml:mrow><mml:mrow><mml:mo>+</mml:mo></mml:mrow></mml:msup><mml:mo stretchy="false">→</mml:mo><mml:msub><mml:mrow><mml:mi>ψ</mml:mi></mml:mrow><mml:mrow><mml:mi mathvariant="italic">D</mml:mi></mml:mrow></mml:msub><mml:mo>+</mml:mo><mml:mi mathvariant="italic">p</mml:mi></mml:mrow></mml:math> Decays at <i>BABAR</i>
Search for Evidence of Baryogenesis and Dark Matter in Decays at <i>BABAR</i> Open
A new dark sector antibaryon, denoted ψ_{D}, could be produced in decays of B mesons. This Letter presents a search for B^{+}→ψ_{D}+p (and the charge conjugate) decays in e^{+}e^{-} annihilations at 10.58 GeV, using data collected in the B…
View article: Precision <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msup><mml:mi>e</mml:mi><mml:mo>−</mml:mo></mml:msup></mml:math> beam polarimetry at an <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow><mml:mi>e</mml:mi></mml:mrow><mml:mrow><mml:mo>+</mml:mo></mml:mrow></mml:msup><mml:msup><mml:mrow><mml:mi>e</mml:mi></mml:mrow><mml:mrow><mml:mo>−</mml:mo></mml:mrow></mml:msup></mml:mrow></mml:math> <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mi>B</mml:mi></mml:mrow></mml:math> factory using tau-pair events
Precision beam polarimetry at an factory using tau-pair events Open
We present a new technique, “tau polarimetry,” for measuring the longitudinal beam polarization present in an e+e− collider through the analysis of e+e−→τ+τ− events. By exploiting the sensitivity of τ decay kinematics to the longitudinal p…
View article: Search for <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>B</mml:mi></mml:math> mesogenesis at <i>BaBar</i>
Search for mesogenesis at <i>BaBar</i> 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 antibaryon (ψD) with …
Study of the reactions , , and at center-of-mass energies from threshold to 4.5 GeV using initial-state radiation Open
View article: Averages of <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>b</mml:mi></mml:math>-hadron, <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>c</mml:mi></mml:math>-hadron, and <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>τ</mml:mi></mml:math>-lepton properties as of 2021
Averages of -hadron, -hadron, and -lepton properties as of 2021 Open
This paper reports world averages of measurements of b-hadron, c-hadron, and τ-lepton properties obtained by the Heavy Flavor Averaging Group using results available before April 2021. In rare cases, significant results obtained several mo…
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: A Wheeler-DeWitt Equation with Time
A Wheeler-DeWitt Equation with Time Open
The equation for canonical gravity produced by Wheeler and DeWitt in the late 1960s still presents difficulties both in terms of its mathematical solution and its physical interpretation. One of these issues is, notoriously, the absence of…
Study of the reactions and at center-of-mass energies from threshold to 4.5 GeV using initial-state radiation Open
Light meson spectroscopy from Dalitz plot analyses of decays to , , and produced in two-photon interactions Open
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…
Study of the reactions and at center-of-mass energies from threshold to 4.5 GeV using initial-state radiation Open
View article: Averages of b-hadron, c-hadron, and $$\tau $$-lepton properties as of 2018
Averages of b-hadron, c-hadron, and $$\tau $$-lepton properties as of 2018 Open
Precision Measurement of the Ratio Open
View article: Search for a Dark Leptophilic Scalar in <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msup><mml:mi>e</mml:mi><mml:mo>+</mml:mo></mml:msup><mml:msup><mml:mi>e</mml:mi><mml:mo>−</mml:mo></mml:msup></mml:math> Collisions
Search for a Dark Leptophilic Scalar in Collisions Open
Many scenarios of physics beyond the standard model predict the existence of new gauge singlets, which might be substantially lighter than the weak scale. The experimental constraints on additional scalars with masses in the MeV to GeV ran…
View article: arXiv : Snowmass 2021 Letter of Interest: Decays of Heavy Flavors Beauty, Charm, and Tau
arXiv : Snowmass 2021 Letter of Interest: Decays of Heavy Flavors Beauty, Charm, and Tau Open
The Heavy Flavor Averaging Group provides this Letter of Interest (LOI) as input to the Snowmass 2021 Particle Physics Community Planning Exercise organized by the Division of Particles and Fields of the American Physical Society. Research…
View article: Snowmass 2021 Letter of Interest: Decays of Heavy Flavors Beauty, Charm, and Tau
Snowmass 2021 Letter of Interest: Decays of Heavy Flavors Beauty, Charm, and Tau Open
The Heavy Flavor Averaging Group provides this Letter of Interest (LOI) as input to the Snowmass 2021 Particle Physics Community Planning Exercise organized by the Division of Particles and Fields of the American Physical Society. Research…
View article: Determination of the Cabibbo-Kobayashi-Maskawa matrix element V_cb
Determination of the Cabibbo-Kobayashi-Maskawa matrix element V_cb Open
In this review we present and discuss the determination of the magnitude of the Cabibbo-Kobayashi-Maskawa (CKM) matrix parameter $V_{cb}$. The CKM matrix parametrizes the weak charged current interactions of quarks in the Standard Model (S…
View article: Search for lepton-flavor-violating decays <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msup><mml:mi>D</mml:mi><mml:mn>0</mml:mn></mml:msup><mml:mo stretchy="false">→</mml:mo><mml:msup><mml:mi>X</mml:mi><mml:mn>0</mml:mn></mml:msup><mml:msup><mml:mi>e</mml:mi><mml:mo>±</mml:mo></mml:msup><mml:msup><mml:mi>μ</mml:mi><mml:mo>∓</mml:mo></mml:msup></mml:math>
Search for lepton-flavor-violating decays Open
We present a search for seven lepton-flavor-violating neutral charm decays of\nthe type $D^{0}\\rightarrow X^{0} e^{\\pm} \\mu^{\\mp}$, where $X^{0}$ represents a\n$\\pi^{0}$, $K^{0}_{\\rm S}$, $\\bar{K^{*0}}$, $\\rho^{0}$, $\\phi$, $\\ome…
View article: Heavy flavour production at LHCb
Heavy flavour production at LHCb Open
The measurements of heavy flavour production in pp collisions provide crucial inputs to study both perturbative and non-perturbative quantum chromodynamics. Moreover these measurements allow to improve the precision on the study of heavy h…