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Ji Hyun Kim

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Publications associées (279)

Measurement of branching fraction and first evidence of CP violation in B-0 -> a(1)(+/-)(1260)pi(-/+) decays

Aurelio Bay, Remi Léandre Albert Louvot, Olivier Schneider, Tagir Aushev, Chao Wang, Jun Yong Kim, Ji Hyun Kim, Jing Li

We present a measurement of the branching fraction and time-dependent CP violation parameters in B-0 -> a(1)(+/-)(1260)pi(-/+) decays. The results are obtained from the final data sample containing 772 x 10(6) B (B) over bar pairs collected at the Gamma(4S ...

American Physical Society2012

Search for CP Violation in D-+/- Meson Decays to phi pi(+/-)

Aurelio Bay, Remi Léandre Albert Louvot, Olivier Schneider, Tagir Aushev, Mingkui Wang, Chao Wang, Jun Yong Kim, Ji Hyun Kim, Yiming Li, Jing Li

We search for CP violation in Cabibbo-suppressed charged D meson decays by measuring the difference between the CP-violating asymmetries for the Cabibbo-suppressed decays D-+/- -> K+K-pi(+/-) and the Cabibbo-favored decays D1/s -> K+K-pi(+/-) in the K+K- m ...

2012

Measurements of branching fractions and time-dependent CP violating asymmetries in B-0 -> D-(*D-)+/-(-/+) decays

Remi Léandre Albert Louvot, Olivier Schneider, Tagir Aushev, Mingkui Wang, Chao Wang, Jun Yong Kim, Ji Hyun Kim, Yiming Li, Jing Li

We report measurements of branching fractions and time-dependent CP asymmetries in B-0 -> D+D- and B-0 -> D*D-+/-(-/+) decays using a data sample that contains (772 +/- 11) x 10(6)B (B) over bar pairs collected at the Y(4S) resonance with the Belle detecto ...

American Physical Society2012

Measurement of the CP-Violation Parameter sin2 phi(1) with a New Tagging Method at the gamma(5S) Resonance

Jean Wicht, Remi Léandre Albert Louvot, Olivier Schneider, Sun Hee Kim, Tagir Aushev, Mingkui Wang, Chao Wang, Jun Yong Kim, Ji Hyun Kim, Yiming Li, Xiao Wang, Jing Li

We report a measurement of the CP-violation parameter sin2 phi(1) at the gamma(5S) resonance using a new tagging method, called "B-pi tagging." In gamma(5S) decays containing a neutral B meson, a charged B, and a charged pion, the neutral B is reconstructe ...

2012

First measurement of phi(3) with a model-independent Dalitz plot analysis of B-+/- -> DK +/-, D -> K-S(0)pi(+)pi(-) decay

Remi Léandre Albert Louvot, Olivier Schneider, Tagir Aushev, Mingkui Wang, Chao Wang, Jun Yong Kim, Ji Hyun Kim, Yiming Li, Jing Li

We present the first measurement of the angle phi(3) of the unitarity triangle using a model-independent Dalitz plot analysis of B-+/- -> DK +/-, D -> K-S(0)pi(+)pi(-) ecays. The method uses, as input, measurements of the strong phase of the D -> K-S(0)pi( ...

American Physical Society2012

First Observation of the P-Wave Spin-Singlet Bottomonium States h(b)(1P) and h(b)(2P)

Jean Wicht, Remi Léandre Albert Louvot, Olivier Schneider, Tagir Aushev, Chao Wang, Jun Yong Kim, Ji Hyun Kim, Xiao Wang, Jing Li

We report the first observations of the spin-singlet bottomonium states h(b)(1P) and h(b)(2P). The states are produced in the reaction e(+)e(-) --> h(b)(nP)pi(+)pi(-) using a 121.4 fb(-1) data sample collected at energies near the Y(5S) resonance with the ...

2012

Measurement of B-0 -> J/psi eta((')) and constraint on the eta - eta ' mixing angle

Remi Léandre Albert Louvot, Olivier Schneider, Tagir Aushev, Mingkui Wang, Chao Wang, Jun Yong Kim, Ji Hyun Kim, Yiming Li, Jing Li

We measure the branching fractions of B-0 -> J/psi eta((')) decays with the complete Belle data sample of 772 x 10(6) B (B) over bar events collected at the Y(4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. The result ...

American Physical Society2012

Search for double charmonium decays of the P-wave spin-triplet bottomonium states

Remi Léandre Albert Louvot, Olivier Schneider, Tagir Aushev, Chao Wang, Jun Yong Kim, Ji Hyun Kim, Xiao Wang, Jing Li

Using a sample of 158 x 10(6) Y(2S) events collected with the Belle detector, we search for the first time for double-charmonium decays of the P-wave spin-triplet bottomonium states (Y(2S) -> gamma chi(bJ), chi(bJ) -> J/psi J/psi, J/psi psi', psi'psi' for ...

American Physical Society2012

KSTAR equilibrium operating space and projected stabilization at high normalized beta

Holger Reimerdes, Joo Yeon Kim, Ji Hyun Kim

Along with an expanded evaluation of the equilibrium operating space of the Korea Superconducting Tokamak Advanced Research, KSTAR, experimental equilibria of the most recent plasma discharges were reconstructed using the EFIT code. In near-circular plasma ...

IOP Publishing Ltd2011

Search for charmonium and charmoniumlike states in gamma(2S) radiative decays

Remi Léandre Albert Louvot, Olivier Schneider, Tagir Aushev, Mingkui Wang, Chao Wang, Jun Yong Kim, Xuan Li, Ji Hyun Kim, Yiming Li, Xiao Wang, Jing Li

Using a sample of 158 x 10(6) gamma (2S) events collected with the Belle detector, charmonium and charmoniumlike states with even charge parity are searched for in gamma (2S) radiative decays. No significant chi(cJ) or eta(c) signal is observed, and the fo ...

American Physical Society2011

Bounds on the width, mass difference and other properties of X(3872) -> pi(+)pi(-) J/psi decays

Aurelio Bay, Remi Léandre Albert Louvot, Olivier Schneider, Sun Hee Kim, Tagir Aushev, Mingkui Wang, Chao Wang, Jun Yong Kim, Xuan Li, Ji Hyun Kim, Yiming Li, Xiao Wang, Jing Li

We present results from a study of X(3872) -> pi pi J/psi decays produced via exclusive B -> KX(3872) decays. We determine the mass to be M-X(3872) = (3871.85 +/- 0.27(stat) +/- 0.19(syst)) MeV, a 90% confidence level upper limit on the natural width of Ga ...

American Physical Society2011

Observation of X(3872) -> J/psi gamma and Search for X(3872) -> psi 'gamma in B Decays

Remi Léandre Albert Louvot, Olivier Schneider, Sun Hee Kim, Tagir Aushev, Jun Yong Kim, Ji Hyun Kim, Yiming Li, Xiao Wang

We report a study of B -> (J/psi gamma)K and B -> (psi'gamma)K decay modes using 772 X 10(6) B (B) over bar events collected at the Y(4S) resonance with the Belle detector at the KEKB energy-asymmetric e(+)e(-) collider. We observe X(3872) -> J/psi gamma a ...

2011

Search for lepton-number-violating B+ -> D- l+ l'+ decays

Aurelio Bay, Remi Léandre Albert Louvot, Olivier Schneider, Sun Hee Kim, Tagir Aushev, Mingkui Wang, Chao Wang, Jun Yong Kim, Ji Hyun Kim, Yiming Li, Jing Li

We perform the first search for lepton-number-violating B+ -> D(-)l(+)l'(+) decays, where l and l' stand for e or mu, using 772 x 10(6) B (B) over bar pairs accumulated at the Y(4S) resonance with the Belle detector at the KEKB e(+)e(-) collider. No eviden ...

American Physical Society2011

Study of the decays B -> Ds1(2536)(+) (D)over-bar(()*())

Remi Léandre Albert Louvot, Olivier Schneider, Tagir Aushev, Mingkui Wang, Chao Wang, Vladislav Balagura, Ji Hyun Kim, Jing Li

We report a study of the decays B -> D-s1(2536)+ (D) over bar (()()), where (D) over bar (()()) is (D) over bar (0), D- or D*(-), using a sample of 657 x 10(6)B (B) over bar pairs collected at the Y(4S) resonance with the Belle detector at the KEKB asymm ...

American Physical Society2011

Study of the K+ pi(+) pi(-) final state in B+ -> J/psi K+ pi(+) pi(-) and B+ -> psi ' K+ pi(+) pi(-)

Remi Léandre Albert Louvot, Olivier Schneider, Tagir Aushev, Mingkui Wang, Chao Wang, Vladislav Balagura, Ji Hyun Kim, Jing Li

Using 535 X 10(6) B-meson pairs collected by the Belle detector at the KEKB e(+)e(-) collider, we measure branching fractions of (7.16 +/- 0.10(stat) +/- 0.60(syst) X 10(-4) for B+ -> J/psi K+ pi(+) pi(-) and (4.31 +/- 0.20(stat) +/- 0.50(syst)) X 10(-4) f ...

American Physical Society2011

Observation of B- -> pbar Lambda D0 at Belle

Remi Léandre Albert Louvot, Olivier Schneider, Tagir Aushev, Mingkui Wang, Chao Wang, Jun Yong Kim, Ji Hyun Kim, Yiming Li, Xiao Wang, Jing Li

We study B- meson decays to (p) over bar Lambda D-(*)0 final states using a sample of 657 x 10(6) B (B) over bar events collected at the Gamma(4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. The observed branching fra ...

American Physical Society2011

First observation of radiative B0 -> phi K0 gamma decays and measurements of their time-dependent CP violation

Remi Léandre Albert Louvot, Olivier Schneider, Sun Hee Kim, Jun Yong Kim, Ji Hyun Kim, Yiming Li, Jing Li

We report the first observation of the radiative decay B-0 -> phi K-0 gamma using a data sample of 772 x 10(6) B (B) over bar pairs collected at the Gamma(4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. We observe a s ...

American Physical Society2011

Observation of D+ -> K+eta(()'()) and Search for CP Violation in D+ -> pi(+)eta(()'()) Decays

Aurelio Bay, Remi Léandre Albert Louvot, Olivier Schneider, Sun Hee Kim, Tagir Aushev, Mingkui Wang, Chao Wang, Jun Yong Kim, Ji Hyun Kim, Yiming Li, Jing Li

We report the first observation of the doubly Cabibbo-suppressed decays D+ -> K+eta(()'()) using a 791 fb(-1) data sample collected with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. The ratio of the branching fractions of doubly Cabi ...

2011

Design and fabrication of compositionally graded inorganic oxide thin films: Mechanical, optical and permeation characteristics

Xavier Bulliard, Yves Leterrier, Ji Hyun Kim

Different types of inorganic oxide films composed of a chemical composition gradient single layer were designed, fabricated and characterized. Compositionally graded thin films were created by power-controlled co-sputtering of alumina (Al2O3) and silica (S ...

Elsevier2010

Study of the B→X(3872)(→D*0D̄0)K decay

Jean Wicht, Aurelio Bay, Remi Léandre Albert Louvot, Nicolas Zwahlen, Olivier Schneider, Tagir Aushev, Chao Wang, Vladislav Balagura, Ji Hyun Kim, Jing Li

We present a study of B→X(3872)K with X(3872) decaying to D0D̄0 using a sample of 657×106 BB̄ pairs recorded at the Υ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider. Both D0→D0γ and D*0→D0π0 decay modes are used. We fin ...

American Physical Society2010

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