N. Guttman

Narrowband searches for continuous gravitational waves from known pulsars in the first two parts of the fourth LIGO--Virgo--KAGRA observing run

The LIGO Scientific Collaboration, the Virgo Collaboration, the KAGRA Collaboration +1853

Rotating non-axisymmetric neutron stars (NSs) are promising sources for continuous gravitational waves (CWs). Such CWs can, if detected, inform us about the internal structure and…

hep-ex2023

Search for $B$ Mesogenesis at BABAR

BABAR Collaboration, J. P. Lees, V. Poireau +239

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…

astro-ph.HE2026

Sub-Torque-Balance Upper Limits on Continuous Gravitational Waves from Scorpius X-1

The LIGO Scientific Collaboration, the Virgo Collaboration, the KAGRA Collaboration +1836

We present the results of a search for continuous gravitational waves from the low-mass X-ray binary Scorpius X-1 using LIGO data from the first part of the fourth LIGO-Virgo-KAGRA…

Searches for Continuous Gravitational Waves from Supernova Remnants in the first part of the LIGO-Virgo-KAGRA Fourth Observing run

The LIGO Scientific Collaboration, the Virgo Collaboration, the KAGRA Collaboration +1764

We present results from directed searches for continuous gravitational waves from a sample of 15 nearby supernova remnants, likely hosting young neutron star candidates, using data…

astro-ph.HE2025

GW241011 and GW241110: Exploring Binary Formation and Fundamental Physics with Asymmetric, High-Spin Black Hole Coalescence

The LIGO Scientific Collaboration, the Virgo Collaboration, the KAGRA Collaboration +1783

We report the observation of gravitational waves from two binary black hole coalescences during the fourth observing run of the LIGO--Virgo--KAGRA detector network, GW241011 and GW…

Study of radiative bottomonium transitions using converted photons

The BABAR Collaboration, J. P. Lees, V. Poireau +388

We use 111+/-1 million Upsilon(3S) and 89+/-1 million Upsilon(2S) events recorded by the BaBar detector at the PEP-II B-factory at SLAC to perform a study of radiative transitions…

All-sky search for continuous gravitational-wave signals from unknown neutron stars in binary systems in the first part of the fourth LIGO-Virgo-KAGRA observing run

The LIGO Scientific Collaboration, the Virgo Collaboration, the KAGRA Collaboration +1765

We present the results of a blind all-sky search for continuous gravitational-wave signals from neutron stars in binary systems using data from the first part of the fourth observi…

hep-ex2013

Study of the decay $B ˉ^{0} \to I^_{c}^{+} p ˉ I ¨ ^{+} I ¨ ^{-}$ and its intermediate states

The Babar Collaboration, J. P. Lees, V. Poireau +351

We study the decay $B ˉ^{0} \to I^_{c}^{+} p ˉ I ¨ ^{+} I ¨ ^{-}$ , reconstructing the Î_{c}^{+} baryon in the $p K^{-} I ¨ ^{+}$ mode, using a data sample of $467\times 10^{6}…

GW240925 and GW250207: Astrophysical Calibration of Gravitational-wave Detectors

The LIGO Scientific Collaboration, the Virgo Collaboration, the KAGRA Collaboration +1839

GW240925 and GW250207 are two loud gravitational-wave signals from binary black hole coalescences observed with network signal-to-noise ratios $\sim 32$ and $\sim 69$ , respectively…

hep-ex2012

Branching fraction and form-factor shape measurements of exclusive charmless semileptonic B decays, and determination of |V_{ub}|

BABAR Collaboration, J. P. Lees, V. Poireau +361

We report the results of a study of the exclusive charmless semileptonic decays, B^0 --> pi^- l^+ nu, B^+ --> pi^0 l^+ nu, B^+ --> omega l^+ nu, B^+ --> eta l^+ nu and B^+ --> eta^…

hep-ex2012

Initial-State Radiation Measurement of the e+e- -> pi+pi-pi+pi- Cross Section

J. P. Lees, V. Poireau, V. Tisserand +383

We study the process e+e- -> pi+pi-pi+pi-gamma, with a photon emitted from the initial-state electron or positron, using 454.3 fb^-1 of data collected with the BABAR detector at SL…

All-sky Searches for Continuous Gravitational Waves from Isolated Neutron Stars in the Data from the First Part of the Fourth LIGO-Virgo-KAGRA Observing Run

The LIGO Scientific Collaboration, the Virgo Collaboration, the KAGRA Collaboration +1826

We present results from an all-sky search for continuous gravitational waves, using three different methods applied to the first eight months of LIGO data from the fourth LIGO-Virg…

Open Data from LIGO, Virgo, and KAGRA through the First Part of the Fourth Observing Run

The LIGO Scientific Collaboration, the Virgo Collaboration, the KAGRA Collaboration +1768

LIGO, Virgo, and KAGRA form a network of gravitational-wave observatories. Data and analysis results from this network are made publicly available through the Gravitational Wave Op…

hep-ex2018

Measurement of $cos 2 I^^{2}$ in $B^{0} \to D^{(*)} h^{0}$ with $D \to K_{S}^{0} I ¨ ^{+} I ¨ ^{-}$ decays by a combined time-dependent Dalitz plot analysis of BaBar and Belle data

The BaBar, Belle Collaborations, : +407

We report measurements of $sin 2 I^^{2}$ and $cos 2 I^^{2}$ from a time-dependent Dalitz plot analysis of $B^{0} \to D^{(*)} h^{0}$ with $D \to K_{S}^{0} I ¨ ^{+} I ¨ ^{-}$ decays, where the…

GWTC-4.0: Tests of General Relativity. II. Parameterized Tests

The LIGO Scientific Collaboration, the Virgo Collaboration, the KAGRA Collaboration +1785

In this second of three papers on tests of general relativity (GR) applied to the compact binary coalescence signals in the 4th Gravitational-Wave Transient Catalog (GWTC-4.0), we…

Directional Search for Persistent Gravitational Waves: Results from the First Part of LIGO-Virgo-KAGRA's Fourth Observing Run

The LIGO Scientific Collaboration, the Virgo Collaboration, the KAGRA Collaboration +1765

The angular distribution of gravitational-wave power from persistent sources may exhibit anisotropies arising from the large-scale structure of the Universe. This motivates directi…

astro-ph.CO2025

Direct multi-model dark-matter search with gravitational-wave interferometers using data from the first part of the fourth LIGO-Virgo-KAGRA observing run

The LIGO Scientific Collaboration, the Virgo Collaboration, the KAGRA Collaboration +1767

Gravitational-wave detectors can probe the existence of dark matter with exquisite sensitivity. Here, we perform a search for three kinds of dark matter -- dilatons (spin-0), dark…

astro-ph.HE2025

GW231123: a Binary Black Hole Merger with Total Mass 190-265 $M_{⊙}$

The LIGO Scientific Collaboration, the Virgo Collaboration, the KAGRA Collaboration +1771

On 2023 November 23 the two LIGO observatories both detected GW231123, a gravitational-wave signal consistent with the merger of two black holes with masses $137^{+23}_{-18}\, M_\o…

hep-ex2023

Model-independent extraction of form factors and $∣ V_{c b} ∣$ in $B \to D ℓ^{-} I^½_{ℓ}$ with hadronic tagging at BaBar

BaBar Collaboration, J. P. Lees, V. Poireau +208

Using the entire BaBar $I^¥ (4 S)$ data set, the first two-dimensional unbinned angular analysis of the semileptonic decay $B \to D ℓ^{-} I^½_{ℓ}$ is perf…

Search for hadronic decays of a light Higgs boson in the radiative decay Upsilon --> gamma A0

The BABAR Collaboration, J. P. Lees, V. Poireau +385

We search for hadronic decays of a light Higgs boson (A0) produced in radiative decays of an Upsilon(2S) or Upsilon(3S) meson, Upsilon --> gamma A0. The data have been recorded by…

hep-ex2014

Evidence for the decay B0 --> omega omega and search for B0 --> omega phi

The BABAR Collaboration, J. P. Lees, V. Poireau +333

We describe searches for B meson decays to the charmless vector-vector final states omega omega and omega phi with 471 x 10^6 B Bbar pairs produced in e+ e- annihilation at sqrt(s)…

Precision measurement of the $B (I^¥ (3 S) \to I ¨ ^{+} I ¨ ^{-}) / B (I^¥ (3 S) \to I^¼^{+} I^¼^{-})$ ratio

J. P. Lees, V. Poireau, V. Tisserand +238

We report on a precision measurement of the ratio $R_{I ¨ I^¼}^{I^¥ (3 S)} = B (I^¥ (3 S) \to I ¨ ^{+} I ¨ ^{-}) / B (I^¥ (3 S) \to I^¼^{+} I^¼^{-})$ using data collected with the BaBar detector…

hep-ex2015

The Physics of the B Factories

A. J. Bevan, B. Golob, Th. Mannel +2003

This work is on the Physics of the B Factories. Part A of this book contains a brief description of the SLAC and KEK B Factories as well as their detectors, BaBar and Belle, and da…

Directed searches for gravitational waves from ultralight vector boson clouds around merger remnant and galactic black holes during the first part of the fourth LIGO-Virgo-KAGRA observing run

The LIGO Scientific Collaboration, the Virgo Collaboration, the KAGRA Collaboration +1769

We present the first directed searches for long-transient and continuous gravitational waves from ultralight vector boson clouds around known black holes (BHs). We use LIGO data fr…

hep-ex2013

Observation of Time Reversal Violation in the B0 Meson System

The BABAR Collaboration, J. P. Lees, V. Poireau +364

Although CP violation in the B meson system has been well established by the B factories, there has been no direct observation of time reversal violation. The decays of entangled n…

GWTC-4.0: Updating the Gravitational-Wave Transient Catalog with Observations from the First Part of the Fourth LIGO-Virgo-KAGRA Observing Run

The LIGO Scientific Collaboration, the Virgo Collaboration, the KAGRA Collaboration +1786

Version 4.0 of the Gravitational-Wave Transient Catalog (GWTC-4.0) adds new candidates detected by the LIGO, Virgo, and KAGRA observatories through the first part of the fourth obs…

astro-ph.CO2025

GWTC-4.0: Constraints on the Cosmic Expansion Rate and Modified Gravitational-wave Propagation

The LIGO Scientific Collaboration, the Virgo Collaboration, the KAGRA Collaboration +1772

We analyze data from 142 of the 218 gravitational-wave (GW) sources in the fourth LIGO-Virgo-KAGRA Collaboration (LVK) Gravitational-Wave Transient Catalog (GWTC-4.0) to estimate t…

Evidence for the h_b(1P) meson in the decay Upsilon(3S) --> pi0 h_b(1P)

The BABAR Collaboration, J. P. Lees, V. Poireau +406

Using a sample of 122 million Upsilon(3S) events recorded with the BaBar detector at the PEP-II asymmetric-energy e+e- collider at SLAC, we search for the $h_{b} (1 P)$ spin-singlet pa…

GWTC-4.0: Tests of General Relativity. III. Tests of the Remnants

The LIGO Scientific Collaboration, the Virgo Collaboration, the KAGRA Collaboration +1779

This is the third paper of the set recording the results of the suite of tests of general relativity (GR) performed on the signals from the fourth Gravitational-Wave Transient Cata…

hep-ex2015

First Observation of CP Violation in B0->D(*)CP h0 Decays by a Combined Time-Dependent Analysis of BaBar and Belle Data

The BaBar, Belle Collaborations, : +471

We report a measurement of the time-dependent CP asymmetry of B0->D(*)CP h0 decays, where the light neutral hadron h0 is a pi0, eta or omega meson, and the neutral D meson is recon…

GWTC-5.0: Observations from the Second Part of the Fourth LIGO-Virgo-KAGRA Observing Run and Updates to the Gravitational-Wave Transient Catalog

The LIGO Scientific Collaboration, the Virgo Collaboration, the KAGRA Collaboration +1827

Version 5.0 of the Gravitational-Wave Transient Catalog (GWTC-5.0) adds new candidates detected by the LIGO Virgo KAGRA network of observatories through the second part of the four…

Cosmological and High Energy Physics implications from gravitational-wave background searches in LIGO-Virgo-KAGRA's O1-O4a runs

The LIGO Scientific Collaboration, the Virgo Collaboration, the KAGRA Collaboration +1769

We search for gravitational-wave background signals produced by various early Universe processes in the Advanced LIGO O4a dataset, combined with the data from the earlier O1, O2, a…

GW250114: testing Hawking's area law and the Kerr nature of black holes

The LIGO Scientific Collaboration, the Virgo Collaboration, the KAGRA Collaboration +1785

The gravitational-wave signal GW250114 was observed by the two LIGO detectors with a network matched-filter signal-to-noise ratio of 80. The signal was emitted by the coalescence o…

hep-ex2012

A Measurement of the Semileptonic Branching Fraction of the B_s Meson

The BaBar Collaboration, J. P. Lees, V. Poireau +383

We report a measurement of the inclusive semileptonic branching fraction of the B_s meson using data collected with the BaBar detector in the center-of-mass (CM) energy region abov…

astro-ph.CO2026

GWTC-5.0: Constraints on the Cosmic Expansion Rate and Modified Gravitational-wave Propagation

The LIGO Scientific Collaboration, the Virgo Collaboration, the KAGRA Collaboration +1810

We employ 236 gravitational-wave (GW) sources in the fifth LIGO--Virgo--KAGRA Collaboration (LVK) Gravitational-Wave Transient Catalog (GWTC-5.0) to estimate the Hubble constant $H…

Constraints on gravitational waves from the 2024 Vela pulsar glitch

The LIGO Scientific Collaboration, the Virgo Collaboration, the KAGRA Collaboration +1774

Among known neutron stars, the Vela pulsar is one of the best targets for gravitational-wave searches. It is also one of the most prolific in terms of glitches, sudden frequency ch…

Observation of the baryonic B decay B0bar --> Lambda_c^+ anti-Lambda K-

The BABAR Collaboration, J. P. Lees, V. Poireau +384

We report the observation of the baryonic B decay B0bar --> Lambda_c^+ anti-Lambda K- with a significance larger than 7 standard deviations based on 471x10^6$ BBbar pairs collected…

astro-ph.HE2026

GWTC-5.0: Population Properties of Merging Compact Binaries

The LIGO Scientific Collaboration, the Virgo Collaboration, the KAGRA Collaboration +1813

We present the population properties of merging compact binaries inferred using 267 mergers from the cumulative Gravitational-Wave Transient Catalog 5.0. As this data set contains…

Measurements of the Absolute Branching Fractions of $B^{\pm} \to K^{\pm} X_{c c ˉ}$

J. P. Lees, V. Poireau, V. Tisserand +232

A study of the two body decays $B^{\pm} \to X_{c c ˉ} K^{\pm}$ , where X $_{c c ˉ}$ refers to one charmonium state, is reported by BaBar collaboration using a data sample of 42…

hep-ex2018

First evidence for $cos 2 I^^{2} > 0$ and resolution of the CKM Unitarity Triangle ambiguity by a time-dependent Dalitz plot analysis of $B^{0} \to D^{(*)} h^{0}$ with $D \to K_{S}^{0} I ¨ ^{+} I ¨ ^{-}$ decays

The BaBar, Belle Collaborations, : +422

We present first evidence that the cosine of the CP-violating weak phase $2 I^^{2}$ is positive, and hence exclude trigonometric multifold solutions of the CKM Unitarity Triangle using…

GWTC-5.0: Tests of General Relativity

The LIGO Scientific Collaboration, the Virgo Collaboration, the KAGRA Collaboration +1822

The signals from the LIGO-Virgo-KAGRA network of gravitational-wave (GW) detectors allow us to perform sensitive tests of general relativity (GR) in the dynamical and strong-field…

GWTC-4.0: Tests of General Relativity. I. Overview and General Tests

The LIGO Scientific Collaboration, the Virgo Collaboration, the KAGRA Collaboration +1781

The worldwide LIGO-Virgo-KAGRA network of gravitational-wave (GW) detectors continues to increase in sensitivity, thus increasing the quantity and quality of the detected GW signal…

hep-ex2019

Search for $B^{-} \to I^ p ˉ I^½ I^ˉ ½$ with the BABAR experiment

The BABAR Collaboration, J. P. Lees, V. Poireau +235

We search for the rare flavor-changing neutral current process $B^{-} \to I^ p I^½ I^½$ using data from the BABAR experiment. A total of 424 fb $^{- 1}$ of $e^{+} e^{-}$ …

astro-ph.HE2026

Searches for Binary Mergers with Sub-solar Mass Components in Data from the First Part of LIGO--Virgo--KAGRA's Fourth Observing Run

The LIGO Scientific Collaboration, the Virgo Collaboration, the KAGRA Collaboration +1834

We report on a gravitational wave search for compact binary coalescences involving at least one component with mass between $0.2 M_{⊙}$ to $1 M_{⊙}$ , and ratio of component m…

Upper Limits on the Isotropic Gravitational-Wave Background from the first part of LIGO, Virgo, and KAGRA's fourth Observing Run

The LIGO Scientific Collaboration, the Virgo Collaboration, the KAGRA Collaboration +1773

We present results from the search for an isotropic gravitational-wave background using Advanced LIGO and Advanced Virgo data from O1 through O4a, the first part of the fourth obse…

Search for rare or forbidden decays of the $D^{0}$ meson

J. P. Lees, V. Poireau, V. Tisserand +234

We present a search for nine lepton-number-violating and three lepton-flavor-violating neutral charm decays of the type $D^{0} \to h^{' -} h^{-} ℓ^{' +} ℓ^{+}$ …

Search for lepton-flavor violating decays $D^{0} \to X^{0} e^{\pm} I^¼^{\mp}$

BaBar Collaboration, J. P. Lees, V. Poireau +238

We present a search for seven lepton-flavor-violating neutral charm decays of the type $D^{0} \to X^{0} e^{\pm} I^¼^{\mp}$ , where $X^{0}$ represents a $I ¨ ^{0}$ , $K^{0}_{\rm S…

All-sky search for long-duration gravitational-wave transients in the first part of the fourth LIGO-Virgo-KAGRA Observing run

The LIGO Scientific Collaboration, the Virgo Collaboration, the KAGRA Collaboration +1772

We present an all-sky search for long-duration gravitational waves (GWs) from the first part of the LIGO-Virgo-KAGRA fourth observing run (O4), called O4a and comprising data taken…

GWTC-4.0: Searches for Gravitational-Wave Lensing Signatures

The LIGO Scientific Collaboration, the Virgo Collaboration, the KAGRA Collaboration +1766

Gravitational waves can be gravitationally lensed by massive objects along their path. Depending on the lens mass and the lens--source geometry, this can lead to the observation of…

GW230814: investigation of a loud gravitational-wave signal observed with a single detector

The LIGO Scientific Collaboration, The Virgo Collaboration, The Kagra Collaboration +1783

GW230814, detected by the LIGO Livingston observatory with a signal-to-noise ratio of 42.4, represents the loudest gravitational-wave signal in the GWTC-4.0 catalog. Its source is…

Search for planetary-mass ultra-compact binaries using data from the first part of the LIGO--Virgo--KAGRA fourth observing run

The LIGO Scientific Collaboration, the Virgo Collaboration, the KAGRA Collaboration +1765

We present a search for gravitational waves from inspiraling, planetary-mass ultra-compact binaries using data from the first part of the fourth observing run of LIGO, Virgo and KA…

GWTC-5.0: Methods for Identifying and Characterizing Gravitational-wave Transients

The LIGO Scientific Collaboration, the Virgo Collaboration, the KAGRA Collaboration +1822

The Gravitational-Wave Transient Catalog (GWTC) is a collection of candidate gravitational-wave transient signals identified and characterized by the LIGO-Virgo-KAGRA Collaboration…

Open Data from LIGO, Virgo, and KAGRA through the Second Part of the Fourth Observing Run

The LIGO Scientific Collaboration, the Virgo Collaboration, the KAGRA Collaboration +1809

LIGO, Virgo, KAGRA, and GEO 600 form a network of gravitational-wave observatories. Data and analysis results from this network are made publicly available through the Gravitationa…

hep-ex2013

Search for direct CP-violation in singly-Cabibbo suppressed D+- --> K+ K- pi+- decays

BaBar Collaboration, J. P. Lees, V. Poireau +359

We report on a search for direct CP asymmetry in the singly Cabibbo-suppressed decay D+- --> K+ K- pi+- using a data sample of 476 fb-1 accumulated with the BaBar detector running…