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Publications (28)

hep-ex2011

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)…

hep-ex2020

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…

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…

hep-ex2011

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…

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…

physics.acc-ph2004

Polarized Electrons for Linear Colliders

J. E. Clendenin, A. Brachmann, E. L. Garwin +7

Future electron-positron linear colliders require a highly polarized electron beam with a pulse structure that depends primarily on whether the acceleration utilizes warm or superc…

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…

hep-ex1994

Observation of Target Electron Momentum Effects in Single-Arm MÃ¸ller Polarimetry

M. Swartz, H. R. Band, F. J. Decker +11

In 1992, L.G. Levchuk noted that the asymmetries measured in MÃ¸ller scattering polarimeters could be significantly affected by the intrinsic momenta of the target electrons. This…

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…

physics.ins-det2004

Atomic Hydrogen Cleaning of Polarized GaAs Photocathodes

T. Maruyama, D. -A. Luh, A. Brachmann +6

Atomic hydrogen cleaning followed by heat cleaning at 450 $^{\circ}$ C was used to prepare negative-electron-affinity GaAs photocathodes. When hydrogen ions were eliminated, quantum ef…

physics.acc-ph2004

Recent Progress at SLAC Extracting High Charge from Highly-Polarized Photocathodes for Future-Collider Applications

J. E. Clendenin, A. Brachmann, E. L. Garwin +8

Future colliders such as NLC and JLC will require a highly-polarized macropulse with charge that is more than an order of magnitude beyond that which could be produced for the SLC.…

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…

hep-ex2011

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…

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}…

hep-ex2011

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…

cond-mat.mtrl-sci2001

Photovoltage Effects in Photoemission from Thin GaAs Layers

G. A. Mulhollan, A. V. Subashiev, J. E. Clendenin +4

A set of thin GaAs p-type negative electron affinity (NEA) photocathodes have been used to measure the yield of photoemitted electrons at high intensity excitation. The active laye…

hep-ex2020

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…

physics.ins-det2004

A systematic study of polarized electron emission from strained GaAs/GaAsP superlattice photocathodes

T. Maruyama, D. -A. Luh, A. Brachmann +8

Spin-polarized electron photoemission has been studied for GaAs/GaAs $_{1 - x}$ P $_{x}$ strained superlattice cathodes grown by gas-source molecular beam epitaxy. The superlattice struct…

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 $e^{+} e^{-}$ …

physics.ins-det2013

SuperB Technical Design Report

SuperB Collaboration, M. Baszczyk, P. Dorosz +406

In this Technical Design Report (TDR) we describe the SuperB detector that was to be installed on the SuperB e+e- high luminosity collider. The SuperB asymmetric collider, which wa…

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…

hep-ex2020

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 $D^{0} \to h^{' -} h^{-} ℓ^{' +} ℓ^{+}$ …

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…

hep-ex2020

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…

Publications (28)

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

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

Precision measurement of the B(I^¥(3S)→I¨+I¨−)/B(I^¥(3S)→I^¼+I^¼−) ratio

The Physics of the B Factories

Observation of Time Reversal Violation in the B0 Meson System

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

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

Polarized Electrons for Linear Colliders

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

Observation of Target Electron Momentum Effects in Single-Arm MÃ¸ller Polarimetry

A Measurement of the Semileptonic Branching Fraction of the B_s Meson

Atomic Hydrogen Cleaning of Polarized GaAs Photocathodes

Recent Progress at SLAC Extracting High Charge from Highly-Polarized Photocathodes for Future-Collider Applications

Search for B Mesogenesis at BABAR

Study of radiative bottomonium transitions using converted photons

Study of the decay Bˉ0→I^c+​pˉ​I¨+I¨− and its intermediate states

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

Photovoltage Effects in Photoemission from Thin GaAs Layers

Measurements of the Absolute Branching Fractions of B±→K±Xccˉ​

First evidence for cos2I^2>0 and resolution of the CKM Unitarity Triangle ambiguity by a time-dependent Dalitz plot analysis of B0→D(∗)h0 with D→KS0​I¨+I¨− decays

A systematic study of polarized electron emission from strained GaAs/GaAsP superlattice photocathodes

Search for B−→I^pˉ​I^½I^ˉ½ with the BABAR experiment

SuperB Technical Design Report

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

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

Search for rare or forbidden decays of the D0 meson

Measurement of cos2I^2 in B0→D(∗)h0 with D→KS0​I¨+I¨− decays by a combined time-dependent Dalitz plot analysis of BaBar and Belle data

Search for lepton-flavor violating decays D0→X0e±I^¼∓

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

Search for $B$ Mesogenesis at BABAR

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

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

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

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

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

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

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