S. Vahsen

activity

19992026

e^{+} e^{-} \to π^{+} π^{-} J / ψ

and Observation of a Charged Charmonium-like State at Belle

739 citations · 8.2k across the 254 of their papers we have counts for

collaborators

Showing 2018Show all

13 papers · 1 filter

hep-ex2018★ 46 cited

Observation of $Ξ (1620)^{0}$ and evidence for $Ξ (1690)^{0}$ in $Ξ_{c}^{+} \to Ξ^{-} π^{+} π^{+}$ decays

Belle collaboration, M. Sumihama, I. Adachi +183

We report the first observation of the doubly-strange baryon $Ξ (1620)^{0}$ in its decay to $Ξ^{-} π^{+}$ via $Ξ_{c}^{+} \to Ξ^{-} π^{+} π^{+}$ decays based on a $980 fb^{- 1}$ data sa…

hep-ex2018★ 23 cited

Search for a light CP-odd Higgs boson and low-mass dark matter at the Belle experiment

Belle Collaboration, I. S. Seong, S. E. Vahsen +187

We report on the first Belle search for a light CP-odd Higgs boson, $A^{0}$ , that decays into low mass dark matter, $χ$ , in final states with a single photon and missing energy. We…

hep-ex2018★ 112 cited

Measurement of the CKM Matrix Element $∣ V_{c b} ∣$ from $B^{0} \to D^{*-} ℓ^{+} ν_{ℓ}$ at Belle

E. Waheed, P. Urquijo, I. Adachi +184

We present a new measurement of the CKM matrix element $∣ V_{c b} ∣$ from $B^{0} \to D^{*-} ℓ^{+} ν_{ℓ}$ decays, reconstructed with the full Belle data set of $711 f b^{- 1}$ i…

hep-ex2018★ 66 cited

Observation of Transverse $Λ/ Λ ˉ$ Hyperon Polarization in $e^{+} e^{-}$ Annihilation at Belle

Belle Collaboration, Y. Guan, A. Vossen +205

We report the first observation of the spontaneous polarization of $Λ$ and $Λ ˉ$ hyperons transverse to the production plane in $e^{+} e^{-}$ annihilation, which is attributed to the…

hep-ex2018★ 570 cited

The Belle II Physics Book

E. Kou, P. Urquijo, W. Altmannshofer +524

We present the physics program of the Belle II experiment, located on the intensity frontier SuperKEKB $e^{+} e^{-}$ collider. Belle II collected its first collisions in 2018, and is ex…

hep-ex2018

Study of charmless decays $B^{\pm} \to K_{S}^{0} K_{S}^{0} h^{\pm}$ ( $h = K, π$ ) at Belle

The Belle Collaboration, A. Abdesselam, I. Adachi +449

We report a search for charmless hadronic decays of charged $B$ mesons to the final states $K_{S}^{0} K_{S}^{0} K^{\pm}$ and $K_{S}^{0} K_{S}^{0} π^{\pm}$ . The results are based o…

hep-ex2018★ 5 cited

Observation of $B^{+} \to p Λ ˉ K^{+} K^{-}$ and $B^{+} \to p ˉ Λ K^{+} K^{+}$

P. -C. Lu, M. -Z. Wang, R. Chistov +200

We report the study of \OK \ and \SK \ using a $772 \times 1 0^{6}$ $B B ˉ$ pair data sample recorded on the $Υ (4S)$ resonance with the Belle detector at KEKB. The following…

hep-ex2018★ 1 cited

Measurements of branching fraction and $C P$ asymmetry of the $B ˉ^{0} (B^{0}) \to K_{S}^{0} K^{\mp} π^{\pm}$ decay at Belle

A. Abdesselam, I. Adachi, K. Adamczyk +446

We report the measurement of the branching fraction and $C P$ asymmetry for the $B ˉ^{0} (B^{0}) \to K_{S}^{0} K^{\mp} π^{\pm}$ decay. The analysis is performed on a data sample of…

hep-ex2018★ 21 cited

Measurements of isospin asymmetry and difference of direct $C P$ asymmetries in inclusive $B \to X_{s} γ$ decays

S. Watanuki, A. Ishikawa, I. Adachi +174

We report measurements of isospin asymmetry $Δ_{0 -}$ and difference of direct $C P$ asymmetries $Δ A_{C P}$ between charged and neutral $B \to X_{s} γ$ decays. This analysis is based on…

hep-ex2018★ 5 cited

Observation of $Υ (2 S) \to γ η_{b} (1 S)$ decay

Belle Collaboration, B. G. Fulsom, T. K. Pedlar +196

We report the observation of $Υ (2 S) \to γ η_{b} (1 S)$ decay based on analysis of the inclusive photon spectrum of $24.7$ fb $^{- 1}$ of $e^{+} e^{-}$ collisions at the $Υ (2 S)$ center-of-mass…

hep-ex2018★ 63 cited

Observation of an excited $Ω^{-}$ baryon

J. Yelton, I. Adachi, J. K. Ahn +189

Using data recorded with the Belle detector, we observe a new excited hyperon, an $Ω^{*-}$ candidate decaying into $Ξ^{0} K^{-}$ and $Ξ^{-} K_{S}^{0}$ with a mass of $2012.4\pm0.7\ {\rm (stat)…

hep-ex2018★ 32 cited

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

The BaBar, Belle Collaborations, : +407

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

physics.ins-det2018★ 67 cited

First Measurements of Beam Backgrounds at SuperKEKB

P. M. Lewis, I. Jaegle, H. Nakayama +67

The high design luminosity of the SuperKEKB electron-positron collider is expected to result in challenging levels of beam-induced backgrounds in the interaction region. Properly s…

Observation of Ξ(1620)0 and evidence for Ξ(1690)0 in Ξc+​→Ξ−π+π+ decays

Search for a light CP-odd Higgs boson and low-mass dark matter at the Belle experiment

Measurement of the CKM Matrix Element ∣Vcb​∣ from B0→D∗−ℓ+νℓ​ at Belle

Observation of Transverse Λ/Λˉ Hyperon Polarization in e+e− Annihilation at Belle

The Belle II Physics Book

Study of charmless decays B±→KS0​KS0​h± (h=K,π) at Belle

Observation of B+→pΛˉK+K− and B+→pˉ​ΛK+K+

Measurements of branching fraction and CP asymmetry of the Bˉ0(B0)→KS0​K∓π± decay at Belle

Measurements of isospin asymmetry and difference of direct CP asymmetries in inclusive B→Xs​γ decays

Observation of Υ(2S)→γηb​(1S) decay

Observation of an excited Ω− baryon

Measurement of cos2β in B0→D(∗)h0 with D→KS0​π+π− decays by a combined time-dependent Dalitz plot analysis of BaBar and Belle data