K. Gan

activity

19942018

most citedObservation of a Broad Structure in the

π^{+} π^{-} J / ψ

Mass Spectrum around 4.26 GeV/

c^{2}

744 citations · 6.8k across the 148 of their papers we have counts for

collaborators

148 papers

physics.ins-det2018★ 568 cited

Production and Integration of the ATLAS Insertable B-Layer

B. Abbott, J. Albert, F. Alberti +373

During the shutdown of the CERN Large Hadron Collider in 2013-2014, an additional pixel layer was installed between the existing Pixel detector of the ATLAS experiment and a new, s…

physics.ins-det2013

The new radiation-hard optical links for the ATLAS pixel detector

Richard Kass, K. K. Gan, H. P. Kagan +6

The ATLAS detector is currently being upgraded with a new layer of pixel based charged particle tracking and a new arrangement of the services for the pixel detector. These upgrade…

hep-ex2009★ 63 cited

A Search for Invisible Decays of the Upsilon(1S)

The BABAR Collaboration, B. Aubert

We search for invisible decays of the Upsilon(1S) meson using a sample of 91.4 x 10^{6} Upsilon(3S) mesons collected at the BaBar/PEP-II B-factory. We select events containing the…

physics.ins-det2008★ 9 cited

Alignment of the Pixel and SCT Modules for the 2004 ATLAS Combined Test Beam

A. Ahmad, A. Andreazza, T. Atkinson +126

A small set of final prototypes of the ATLAS Inner Detector silicon tracker (Pixel and SCT) were used to take data during the 2004 Combined Test Beam. Data were collected from runs…

hep-ex2007★ 17 cited

Search for B0->phiK+pi- Decays with Large K+pi- Invariant Mass

The BABAR Collaboration, B. Aubert

Motivated by the polarization anomaly in the B->phi(1020)K*(892) decay, we extend our search for other K* final states in the decay B0->phi(1020)K^*0 with the K*0->K+pi- invariant…

hep-ex2007★ 61 cited

Determination of the Form Factors for the Decay B0 -> D*- l+ nu_l and of the CKM Matrix Element |V_cb|

The BABAR Collaboration, B. Aubert

We present a combined measurement of the Cabibbo-Kobayashi-Maskawa matrix element |V_{cb}| and of the parameters rho^2, R_1(1), and R_2(1), which fully characterize the form factor…

hep-ex2007★ 18 cited

Branching fraction and charge asymmetry measurements in B to J/psi pi pi decays

The BABAR collaboration, B. Aubert

We study the decays B0 to J/psi pi+pi- and B+ to J/psi pi+pi0, including intermediate resonances, using a sample of 382 million BBbar pairs recorded by the BaBar detector at the PE…

hep-ex2007★ 41 cited

Amplitude Analysis of the decay D^0 --> K^- K^+ pi^0

BABAR Collaboration, B. Aubert

Using 385 fb^-1 of e^+e^- collisions at the CM energies of around 10.6 GeV recorded by the BaBar experiment, we study the amplitudes of the singly Cabibbo-suppressed decay D^0 -->…

hep-ex2007★ 129 cited

The $e^{+} e^{-} \to K^{+} K^{-} π^{+} π^{-}$ , $K^{+} K^{-} π^{0} π^{0}$ and $K^{+} K^{-} K^{+} K^{-}$ Cross Sections Measured with Initial-State Radiation

The BABAR Collaboration, B. Aubert

We study the processes $e^{+} e^{-} \to K^{+} K^{-} π^{+} π^{-} γ$ , $K^{+} K^{-} π^{0} π^{0} γ$ and $K^{+} K^{-} K^{+} K^{-} γ$ , where the photon is radiated from the initial state. About 34600, 4400 and 2300 fully r…

hep-ex2007★ 12 cited

Search for Neutral B-Meson Decays to a0pi, a0K, etarho0, and etaf0

The BABAR Collaboration, B. Aubert

We present a search for B0 decays to charmless final states involving an eta meson, a charged pion and a second charged pion or kaon. The data sample corresponds to 383x10^6 BBbar…

hep-ex2007★ 46 cited

Measurement of ${CP}\xspace$ Violation Parameters with a Dalitz Plot Analysis of $B^{\pm} \to D_{π^{+} π^{-} π^{0}} K^{\pm}$

The BaBar Collaboration, B. Aubert

We report the results of a CP violation analysis of the decay B+/- --> D(pipipi0)K+/-, where D(pipipi0) indicates a neutral D meson detected in the final state pi+pi-pi0, excluding…

hep-ex2007★ 34 cited

Improved Measurement of CP Violation in Neutral B Decays to c cbar s

The BABAR Collaboration, B. aubert

We present updated measurements of time-dependent CP asymmetries in fully-reconstructed neutral B decays to several CP eigenstates containing a charmonium meson. The measurements u…

hep-ex2007★ 65 cited

Observation of CP Violation in B0 -> K+pi- and B0 -> pi+pi-

B. Aubert

We report observations of CP violation in the decays B0 -> K+pi- and B0 -> pi+pi- in a sample of 383 million Y(4S) -> BBbar events. We find 4372 +/- 82 B0 -> K+pi- decays and measu…

hep-ex2007★ 12 cited

Measurement of CP Asymmetry in B0 to Ks pi0 pi0 Decays

The BABAR Collaboration, B. Aubert

We present a measurement of the time-dependent CP asymmetry for the neutral B-meson decay into the CP = +1 final state Ks pi0 pi0, with Ks -> pi+ pi-. We use a sample of approximat…

hep-ex2007★ 11 cited

Observation of $B^{+} \to ρ^{+} K^{0}$ and Measurement of its Branching Fraction and Charge Asymmetry

B. Aubert, BaBar Collaboration

We present the first observation of the decay $B^{+} \to ρ^{+} K^{0}$ , using a data sample of 348 fb $^{- 1}$ collected at the $Υ (4 S)$ resonance with the \babar detector.The branching fractio…

hep-ex2007

Measurement of the B+ --> rho+ pi0 Branching Fraction and Direct CP Asymmetry

The BABAR Collaboration, B. Aubert

We present improved measurements of the branching fraction and CP asymmetry for the process B+ --> rho+ pi0. The data sample corresponding to 211/fb comprises 232 million Y(4S)-->B…

hep-ex2006★ 66 cited

Measurement of the B0 --> pi l nu Form-Factor Shape and Branching Fraction, and Determination of |Vub| with a Loose Neutrino Reconstruction Technique

B. Aubert et al.

We report the results of a study of the exclusive charmless semileptonic decay, B --> pi l nu, undertaken with approximately 227 million BBbar pairs collected at the Upsilon(4S) re…

hep-ex2006★ 11 cited

Evidence for B0->rho0rho0 Decay and Implications for the CKM Angle alpha

The BABAR Collaboration, B. Aubert

We search for the decays B0->rho0rho0, B0->rho0f0, and B0->f0f0 in a sample of about 384 million Upsilon(4S)->BBbar decays collected with the BABAR detector at the PEP-II asymmetri…

hep-ex2006★ 13 cited

Observation of the Exclusive Reaction e+e- -> phi eta at sqrt{s}=10.58 GeV

The BABAR Collaboration, B. Aubert

We report the observation of $\e^+e^-\to ϕη$ near $s$ = 10.58 GeV with 6.5 $σ$ significance in the $K^{+} K^{-} γ γ$ final state in a data sample of 224 $f b^{- 1}$ collected by the…

hep-ex2006★ 6 cited

Evidence for the Rare Decay B+ --> Ds+ pi0

The BABAR Collaboration, B. Aubert

We have searched for the rare decay B+ --> Ds+ pi0. The analysis is based on a sample of 232 million Upsilon(4S) --> B anti-B decays collected with the BABAR detector at the PEP-II…

hep-ex2006★ 148 cited

A Structure at 2175 MeV in $e^{+} e^{-} \to ϕ f_{0} (980)$ Observed via Initial-State Radiation

The BABAR Collaboration, B. Aubert

We study the initial-state-radiation processes $e^{+} e^{-} \to K^{+} K^{-} π^{+} π^{-} γ$ and $e^{+} e^{-} \to K^{+} K^{-} π^{0} π^{0} γ$ using an integrated luminosity of 232 fb $^{- 1}$ collected at the $Υ(4S)…

hep-ex2006★ 44 cited

Vector-Tensor and Vector-Vector Decay Amplitude Analysis of B0->phi K*0

The BABAR Collaboration, B. Aubert

We perform an amplitude analysis of the decays B0->phi K^*_2(1430)0, phi K^*(892)0, and phi(K pi)^0_S-wave with a sample of about 384 million BBbar pairs recorded with the BABAR de…

hep-ex2006★ 289 cited

Evidence of a Broad Structure at an Invariant Mass of 4.32 GeV/ $c^{2}$ in the Reaction $e^{+} e^{-} \to π^{+} π^{-} ψ (2 S)$ Measured at BaBar

The BABAR Collaboration, B. Aubert

We present a measurement of the cross section of the process $e^{+} e^{-} \to π^{+} p i^{-} ψ (2 S)$ from threshold up to 8 GeV center-of-mass energy using events containing initial-state radiatio…

hep-ex2006★ 17 cited

Branching fraction measurement of B0 --> D()- pi+, B- --> D()0 pi- and isospin analysis of B --> D(*) pi decays

The BABAR Collaboration, B. Aubert

Using 65 million $Υ (4 S) \to B B ˉ$ events collected with the BABAR detector at the PEP-II $e^{+} e^{-}$ storage ring at the Stanford Linear Accelerator Center, we measure the colo…

Production and Integration of the ATLAS Insertable B-Layer

The new radiation-hard optical links for the ATLAS pixel detector

A Search for Invisible Decays of the Upsilon(1S)

Alignment of the Pixel and SCT Modules for the 2004 ATLAS Combined Test Beam

Search for B0->phiK+pi- Decays with Large K+pi- Invariant Mass

Determination of the Form Factors for the Decay B0 -> D*- l+ nu_l and of the CKM Matrix Element |V_cb|

Branching fraction and charge asymmetry measurements in B to J/psi pi pi decays

Amplitude Analysis of the decay D^0 --> K^- K^+ pi^0

The e+e−→K+K−π+π−, K+K−π0π0 and K+K−K+K− Cross Sections Measured with Initial-State Radiation

Search for Neutral B-Meson Decays to a0pi, a0K, etarho0, and etaf0

Measurement of ${CP}\xspace$ Violation Parameters with a Dalitz Plot Analysis of B±→Dπ+π−π0​K±

Improved Measurement of CP Violation in Neutral B Decays to c cbar s

Observation of CP Violation in B0 -> K+pi- and B0 -> pi+pi-

Measurement of CP Asymmetry in B0 to Ks pi0 pi0 Decays

Observation of B+→ρ+K0 and Measurement of its Branching Fraction and Charge Asymmetry

Measurement of the B+ --> rho+ pi0 Branching Fraction and Direct CP Asymmetry

Measurement of the B0 --> pi l nu Form-Factor Shape and Branching Fraction, and Determination of |Vub| with a Loose Neutrino Reconstruction Technique

Evidence for B0->rho0rho0 Decay and Implications for the CKM Angle alpha

Observation of the Exclusive Reaction e+e- -> phi eta at sqrt{s}=10.58 GeV

Evidence for the Rare Decay B+ --> Ds+ pi0

A Structure at 2175 MeV in e+e−→ϕf0​(980) Observed via Initial-State Radiation

Vector-Tensor and Vector-Vector Decay Amplitude Analysis of B0->phi K*0

Evidence of a Broad Structure at an Invariant Mass of 4.32 GeV/c2 in the Reaction e+e−→π+π−ψ(2S) Measured at BaBar

Branching fraction measurement of B0 --> D(*)- pi+, B- --> D(*)0 pi- and isospin analysis of B --> D(*) pi decays

The $e^{+} e^{-} \to K^{+} K^{-} π^{+} π^{-}$ , $K^{+} K^{-} π^{0} π^{0}$ and $K^{+} K^{-} K^{+} K^{-}$ Cross Sections Measured with Initial-State Radiation

Measurement of ${CP}\xspace$ Violation Parameters with a Dalitz Plot Analysis of $B^{\pm} \to D_{π^{+} π^{-} π^{0}} K^{\pm}$

Observation of $B^{+} \to ρ^{+} K^{0}$ and Measurement of its Branching Fraction and Charge Asymmetry

A Structure at 2175 MeV in $e^{+} e^{-} \to ϕ f_{0} (980)$ Observed via Initial-State Radiation

Evidence of a Broad Structure at an Invariant Mass of 4.32 GeV/ $c^{2}$ in the Reaction $e^{+} e^{-} \to π^{+} π^{-} ψ (2 S)$ Measured at BaBar

Branching fraction measurement of B0 --> D()- pi+, B- --> D()0 pi- and isospin analysis of B --> D(*) pi decays