T. Sakao

First Measurement of the $K^-$ Escape Cross Section in the ${}^{12}{\rm C}(K^{-},p)$ Reaction

Fumiya Oura, Y. Ichikawa, J. Yamagata-Sekihara, Jung Keun Ahn et autres

We investigated the $\bar{K}$-nucleus interaction through the simultaneous measurement of the inclusive $^{12}{\rm C}(K^-, p)$ and exclusive $K^-$-escape $^{12}{\rm C}(K^-, p K^-_{esc})$ reactions at $1.8$ GeV/$c$ at J-PARC. The present measurement explicitly focuses on the $K^-$ escape process for the first time, …

First Measurement of the $K^-$ Escape Cross Section in the ${}^{12}{\rm C}(K^{-},p)$ Reaction

Fumiya Oura, Y. Ichikawa, J. Yamagata-Sekihara, Jung Keun Ahn et autres

We investigated the $\bar{K}$-nucleus interaction through the simultaneous measurement of the inclusive $^{12}{\rm C}(K^-, p)$ and exclusive $K^-$-escape $^{12}{\rm C}(K^-, p K^-_{esc})$ reactions at $1.8$ GeV/$c$ at J-PARC. The present measurement explicitly focuses on the $K^-$ escape process for the first time, …

jp, kr, us, no (code pays fourni par la source)

Exclusive Study of \(\overline{K}\)-nucleon Many-body System via the \(^{12}\text{C}(K^{ - },p)\) Reaction at J-PARC

Fumiya Oura, Jung Keun Ahn, S K Choi, Manami Fujita et autres

jp, kr, us (code pays fourni par la source)

Parallel In-context Learning for Large Vision Language Models

Shin’ya Yamaguchi, Daiki Chijiwa, T. Sakao, Taku Hasegawa

Large vision-language models (LVLMs) employ multi-modal in-context learning (MM-ICL) to adapt to new tasks by leveraging demonstration examples. While increasing the number of demonstrations boosts performance, they incur significant inference latency due to the quadratic computational cost of Transformer attention with respect …

Parallel In-context Learning for Large Vision Language Models

Shin’ya Yamaguchi, Daiki Chijiwa, T. Sakao, Taku Hasegawa

Large vision-language models (LVLMs) employ multi-modal in-context learning (MM-ICL) to adapt to new tasks by leveraging demonstration examples. While increasing the number of demonstrations boosts performance, they incur significant inference latency due to the quadratic computational cost of Transformer attention with respect …

jp (code pays fourni par la source)

Polarization Measurement of $\Xi^-$ Hyperon produced from $(K^-,K^+)$ reactions at 1.8 GeV/c

Byungmin Kang, Jung Keun Ahan, Woo Seung Jung, Sung Wook Choi et autres

The $(K^-,K^+)\,\Xi^-$ reaction offers crucial insights into the double-strangeness exchange mechanism. Owing to the absence of single-meson exchange in the $t$ channel, the reaction is expected to be backward-peaked. Nevertheless, a forward enhancement has been reported, suggesting that $s$-channel $\Lambda^\ast$ and $\Sigma^\ast$ …

kr, jp, us (code pays fourni par la source)

Measurement of Λ Polarization in the π ¯ p → K 0 Λ Reaction at p π¯ = 1.33 GeV/ c toward a New Λ p Scattering Experiment

T. Sakao, K. Miwa, J. K. Ahn, Y. Akazawa et autres

Abstract Understanding the spectrum and dynamics of excited nucleon states ($N^{*}$ resonances) remains a central challenge in hadron physics, as these resonances emerge in intermediate states of $\pi N$ and $\gamma N$ interactions. The dynamical coupled-channel models addressing this problem rely critically …

jp, kr, fr, ru, ge (code pays fourni par la source)

Production of double-strangeness systems near the threshold in the $^{12}C(K^{-},K^{+})$reaction at 1.8 GeV/𝒄

W. S. Jung, J. K. Ahn, Sungwook Choi, Manami Fujita et autres

This study aims to measure the cross sections of the $^{12}$C$(K^-, K^+\Xi^-)$ and $^{12}$C$(K^-, K^+\Lambda\Lambda)$ reactions at 1.8\,GeV/$c$ using data from the J-PARC E42 experiment. Here, we present the measurement of the inclusive cross section for the $^{12}$C$(K^-, K^+)$ reaction and the …

kr, jp (code pays fourni par la source)

Measurement of $\Xi^-$ Polarization in the $K^- p → \Xi^- K^+$ + Reaction at 1.8 GeV/c

Byungmin Kang, J. K. Ahn, Wooseung Jung, Y. Ichikawa et autres

The polarization of a $\Xi^-$ baryon produced in the p$(K^-,K^+)\Xi^-$ reaction offers critical insights into the double-strangeness exchange mechanism. Since polarization reflects the spin-flip amplitude of the reaction, it helps us describe the reaction mechanism involving high-spin resonances, which are expected to …

kr, jp, us, au (code pays fourni par la source)

Lossless Vocabulary Reduction for Auto-Regressive Language Models

Daiki Chijiwa, Taku Hasegawa, Kyosuke Nishida, Shin’ya Yamaguchi et autres

Tokenization -- the process of decomposing a given text into a sequence of subwords called tokens -- is one of the key components in the development of language models. Particularly, auto-regressive language models generate texts token by token, i.e., by predicting the …

Measurement of $Λ$ Polarization in the $π^{-}p \to K^{0} Λ$ Reaction at $p_{π^{-}}=1.33$ GeV/$c$ toward a New $Λp$ Scattering Experiment

T. Sakao, K. Miwa, Y. Akazawa, T. Aramaki et autres

This paper presents high-precision experimental data of the polarization of the $Λ$ hyperon in the $π^{-}p \to K^{0} Λ$ reaction, measured in the angular range $0.6<\cos θ^{CM}_{K0}<1.0$ with a fine bin width of $d\cos θ^{CM}_{K0}=0.05$. The data were obtained from the J-PARC …

fr (code pays fourni par la source)

Cross Section Measurements for 12C( K −, K +Ξ−) and 12C( K −, K +Λ Λ) Reactions at 1.8 GeV/ c

Woo Seung Jung, Y. Ichikawa, Byung Min Kang, J. K. Ahn et autres

Abstract We present a measurement of the production of $\Xi ^-$ and $\Lambda \Lambda$ in the $^{12}$C$(K^-, K^+)$ reaction at an incident beam momentum of 1.8 GeV$/c$, based on high-statistics data from J-PARC E42. The cross section for the $^{12}$C$(K^-, K^+\Xi ^-)$ …

kr, jp, us (code pays fourni par la source)