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Jun Yong Kim

Cette personne n’est plus à l’EPFL

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Publications associées (148)

Search for Bottomonium States in Exclusive Radiative gamma(2S) Decays

Olivier Schneider, Tagir Aushev, Mingkui Wang, Chao Wang, Dipanwita Dutta, Jun Yong Kim, Donghyun Kim, Ji Hyun Kim, Yiming Li, Xiao Wang, Jing Li

We search for bottomonium states in gamma(2S) -> (b (b) over bar)gamma decays with an integrated luminosity of 24.7 fb(-1) recorded at the gamma(2S) resonance with the Belle detector at KEK, containing (157.8 +/- 3.6) x 10(6) gamma(2S) events. The (b (b) o ...

Amer Physical Soc2013

Measurement of e(+)e(-) -> omega pi(0), K(892)(K)over-bar and K-2(1430)(K)over-bar at root s near 10.6 GeV

Olivier Schneider, Tagir Aushev, Chao Wang, Dipanwita Dutta, Jun Yong Kim, Donghyun Kim, Ji Hyun Kim, Yiming Li, Xiao Wang

Using data samples of 89 fb(-1), 703 fb(-1), and 121 fb(-1) collected with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider at center-of-mass energies 10.52 GeV, 10.58 GeV, and 10.876 GeV, respectively, we study the exclusive reactions e( ...

American Physical Society2013

Evidence for Direct CP Violation in B-+/- -> eta h(+/-) and Observation of B-0 -> eta K-0

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

We report measurements of the branching fractions and CP asymmetries for B-+/- -> eta h(+/-) (h = K or pi) and the observation of the decay B-0 -> eta K-0 from the final data sample of 772 x 10(6) B (B) over bar pairs collected with the Belle detector at t ...

2012

Search for the decay B-0 -> DK*(0) followed by D -> K- pi(+)

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

We report a study of the decay B-0 -> DK+ pi(-) followed by D -> K- pi(+) , where D indicates D-0 or (D) over bar (0). We reconstruct the DK+ pi(-) state in a phase space corresponding to DK*(892)(0). The CP-violating angle phi(3) affects its decay rate vi ...

American Physical Society2012

First observation of CP violation and improved measurement of the branching fraction and polarization of B-0 -> D(+) D(-) decays

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

We report the measurement of the branching fraction, the polarization, and the parameters of the time-dependent CP violation in B-0 -> D*(+) D*(-) decays using a data sample of 772 x 10(6)B (B) over bar pairs, collected at the Upsilon(4S) resonance with th ...

American Physical Society2012

Evidence for CP Violation in the Decay D+ -> K-S(0)pi(+)

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

We observe evidence for CP violation in the decay D+ -> K-S(0)pi(+) using a data sample with an integrated luminosity of 977 fb(-1) collected by the Belle detector at the KEKB e(+) e(-) asymmetric-energy collider. The CP asymmetry in the decay is measured ...

2012

Observation of exclusive Y(1S) and Y(2S) decays into light hadrons

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

Using samples of 102 x 10(6) Gamma(1S) and 158 x 10(6) Gamma(2S) events collected with the Belle detector, we study exclusive hadronic decays of these two bottomonium resonances to the three-body final states phi K+K-, omega pi(+)pi(-) and K*(0)(892)K-pi(+ ...

American Physical Society2012

Observation of Two Charged Bottomoniumlike Resonances in Y(5S) Decays

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 report the observation of two narrow structures in the mass spectra of the pi(+/-) Y(nS) (n = 1, 2, 3) and pi(+/-) h(b)(mP) (m = 1, 2) pairs that are produced in association with a single charged pion in Y(5S) decays. The measured masses and widths of t ...

2012

Observation of New Resonant Structures in gamma gamma -> omega phi, phi phi, and omega omega

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

The processes gamma gamma -> omega phi,phi phi, and omega omega are measured using an 870 fb(-1) data sample collected with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. Production of vector meson pairs is clearly observed and their c ...

2012

Measurement of gamma gamma* -> pi(0) transition form factor at Belle

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

We report a measurement of the process gamma gamma* -> pi(0) with a 759 fb(-1) data sample recorded with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. The pion transition form factor, F(Q(2)), is measured for the kinematical region 4 ...

American Physical Society2012

Precise Measurement of the CP Violation Parameter sin2 phi(1) in B-0 -> (c(c)over-bar) K-0 Decays

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 present a precise measurement of the CP violation parameter sin2 phi(1) and the direct CP violation parameter A(f) using the final 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 a ...

2012

First Observation of B-s(0) -> J/psi eta and B-s(0) -> J/psi eta '

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

We report first observations of B-s(0) -> J/psi eta and B-s(0) -> J/psi eta'. The results are obtained from 121.4 fb(-1) of data collected at the Gamma(5S) resonance with the Belle detector at the KEKB e(+)e(-) collider. We obtain the branching fractions B ...

2012

Search for Time-Dependent CPT Violation in Hadronic and Semileptonic B Decays

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

We report a new sensitive search for C P T violation, which includes improved measurements of the C P T-violating parameter z and the total decay-width difference normalized to the averaged width delta(d) delta(d) of the two B-d mass eigenstates . The resu ...

American Physical Society2012

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

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