Xiangyu Jin

activity

20192026

most citedA SPectroscopic survey of biased halos In the Reionization Era (ASPIRE): JWST Reveals a Filamentary Structure around a z=6.61 Quasar

91 citations · 380 across the 22 of their papers we have counts for

collaborators

22 papers

hep-ph2026

The Negative- $Σ Σ ˉ$ Angular-Parameter Puzzle in $J / ψ$ and $ψ (2 S)$ Decays

Chao-Qiang Geng, Xiang-Nan Jin, Chia-Wei Liu

Experimental measurements of $J / ψ$ and $ψ (2 S)$ decays to octet baryon pairs reveal a negative- $Σ Σ ˉ$ puzzle in the angular distributions: $α_{Σ}^{J / ψ} < 0$ , whereas the other measure…

hep-ph2026

Strange Quark Electric Dipole Moment withTopological Anomalies

Chao-Qiang Geng, Xiang-Nan Jin, Chia-Wei Liu +1

We introduce an anomaly-based framework to probe quark electric dipole moments in exclusive hadronic final states produced in $e^{+} e^{-}$ annihilation. Chern-Simons-induced anomalous…

hep-ph2025

Potential of discovering $Ξ_{cc}^{+}$ in $Λ_{b}$ decays

Chao-Qiang Geng, Xiang-Nan Jin, Chia-Wei Liu +2

We propose to search for $Ξ_{cc}^{+}$ in the decay $Λ_{b} \to Ξ_{cc}^{+} D^{-}$ , which serves as a tagged and reconstructible source of $Ξ_{cc}^{+}$ , providing an experimentally clean enviro…

hep-ph2025★ 2 cited

Large CP Asymmetries from Final-State Interactions in Charmful Baryonic Decays of $B^{0} \to Ξ_{c}^{+} Ξ_{c}^{-}$ and $B_{s}^{0} \to Λ_{c}^{+} Λ_{c}^{-}$

Chao-Qiang Geng, Xiang-Nan Jin, Chia-Wei Liu

We study the direct CP asymmetries in the decays of $B^{0} \to Ξ_{c}^{+} Ξ_{c}^{-}$ and $B_{s}^{0} \to Λ_{c}^{+} Λ_{c}^{-}$ , emphasizing the critical role of final-state interactions (…

hep-ph2024

Hidden strangeness in meson weak decays to baryon pair

Chao-Qiang Geng, Xiang-Nan Jin, Chia-Wei Liu +1

Our study focuses on the weak decay of $D_{s}^{+} \to p n$ , which is the only possible two-body baryonic decay in the $D$ meson system. An analysis using perturbative qu…

hep-ph2023

Complete determination of $S U (3)_{F}$ amplitudes and strong phase in $Λ_{c}^{+} \to Ξ^{0} K^{+}$

Chao-Qiang Geng, Xiao-Gang He, Xiang-Nan Jin +2

The BESIII collaboration has recently reported the first time measurement of the decay asymmetry $α (Λ_{c}^{+} \to Ξ^{0} K^{+}) = 0.01 \pm 0.16 (s t a t .) \pm 0.03 (sy s t .)$ and also a sizable ph…

hep-ph2023

CP asymmetries in $B$ meson two-body baryonic decays

Chao-Qiang Geng, Xiang-Nan Jin, Chia-Wei Liu

We study the CP-odd and CP-even observables of the $B$ mesons decaying into a baryon and antibaryon. We estimate these observables through the $^{3} P_{0}$ model and chiral selection ru…

astro-ph.GA2023★ 91 cited

A SPectroscopic survey of biased halos In the Reionization Era (ASPIRE): JWST Reveals a Filamentary Structure around a z=6.61 Quasar

Feige Wang, Jinyi Yang, Joseph F. Hennawi +56

We present the first results from the JWST ASPIRE program (A SPectroscopic survey of biased halos In the Reionization Era). This program represents an imaging and spectroscopic sur…

astro-ph.GA2023★ 77 cited

A SPectroscopic survey of biased halos In the Reionization Era (ASPIRE): A First Look at the Rest-frame Optical Spectra of $z > 6.5$ Quasars Using JWST

Jinyi Yang, Feige Wang, Xiaohui Fan +53

Studies of rest-frame optical emission in quasars at $z > 6$ have historically been limited by the wavelengths accessible by ground-based telescopes. The James Webb Space Telescope (…

hep-ph2022★ 9 cited

Semileptonic decays of doubly charmed baryons with $Ξ_{c} - Ξ_{c}^{'}$ mixing

Chao-Qiang Geng, Xian-Nan Jin, Chia-Wei Liu +2

We study the $Ξ_{c} - Ξ_{c}^{'}$ mixing effects in the semileptonic decays the doubly charm baryons of $Ξ_{cc}$ . We focus on the ratio of ${\cal R}(θ_c) \equiv {\cal B}( Ξ_{cc} \to Ξ_c' e^…

astro-ph.CO2022★ 88 cited

(Nearly) Model-Independent Constraints on the Neutral Hydrogen Fraction in the Intergalactic Medium at $z \sim 5 - 7$ Using Dark Pixel Fractions in Ly $α$ and Ly $β$ Forests

Xiangyu Jin, Jinyi Yang, Xiaohui Fan +10

Cosmic reionization was the last major phase transition of hydrogen from neutral to highly ionized in the intergalactic medium (IGM). Current observations show that the IGM is sign…

hep-ph2022★ 6 cited

Heavy quark symmetry of $Λ_{b}^{0}$ decays in quark models

Jiabao Zhang, Xiang-Nan Jin, Chia-Wei Liu +1

We study the heavy quark symmetry with the homogeneous bag model (HBM) and light-front quark model (LFQM) based on the decays of $Λ_{b}^{0} \to Λ_{c}^{+} ℓ^{-} ν_{ℓ} (ℓ = e, μ, τ)$ .…

hep-ph2022★ 11 cited

Anatomy of $Λ_{c}^{+}$ semileptonic decays

Chao-Qiang Geng, Xiang-Nan Jin, Chia-Wei Liu

We present a systematic study of $Λ_{c}^{+} \to B_{q} ℓ^{+} ν_{ℓ}$ with $B_{q} = (Λ, n)$ and $ℓ = (e, μ)$ , examining all the possible decay observables based on the hom…

hep-ph2022

Resolving puzzle in $Ξ_{c}^{0} \to Ξ^{-} e^{+} ν_{e}$ with $Ξ_{c} - Ξ_{c}^{'}$ mixing

Chao-Qiang Geng, Xiang-Nan Jin, Chia-Wei Liu

We study the ratio of $R = 2Γ (Ξ_{c}^{0} \to Ξ^{-} e^{+} ν_{e}) /3Γ (Λ_{c}^{+} \to Λ e^{+} ν_{e})$ , which is found to be $R = 1 (0.8)$ from the exact (broken) $S U (3)$ flavor symmetry, in sharp contrast…

hep-ph2022★ 9 cited

Time-reversal asymmetries in $Λ_{b}$ semileptonic decays

Chao-Qiang Geng, Xiang-Nan Jin, Chia-Wei Liu

We study the decays of $Λ_{b} \to Λ_{c} (\to B_{n} f) ℓ^{-} ν$ with $ℓ = e, μ, τ$ , where $B_{n}$ and $f$ are the daughter baryons and the rest of the particles in $Λ_{c}$ cascad…

hep-ph2022★ 6 cited

New extraction of CP violation in b-baryon decays

Chao-Qiang Geng, Xiang-Nan Jin, Chia-Wei Liu +2

We study CP violation in b-baryon decays of $Ξ_{b}^{-} \to Ξ^{-} D$ with $D = D^{0}, D ˉ^{0}$ and $D_{i} (i = 1, 2)$ . We find that these baryonic decay processes provide an ideal opportunity…

astro-ph.GA2021★ 18 cited

Deep XMM-Newton Observations of an X-ray Weak, Broad Absorption Line Quasar at $z = 6.5$

Jinyi Yang, Xiaohui Fan, Feige Wang +14

We report X-ray observations of the most distant known gravitationally lensed quasar, J0439+1634 at $z = 6.52$ , which is also a broad absorption line (BAL) quasar, using the XMM-Newt…

hep-ph2021★ 6 cited

Study of charmless two-body baryonic $B$ decays

Xiang-Nan Jin, Chia-Wei Liu, Chao-Qiang Geng

We study the charmless two-body decays of $B \to B_{n} B_{n}^{'}$ with $B = (B^{+}, B^{0}, B_{s}^{0})$ and $B_{n}^{(')}$ the low-lying octet baryons. The fac…

astro-ph.HE2021★ 14 cited

Probing the disk-corona systems and broad line regions of changing-look quasars with X-ray and optical observations

Xiangyu Jin, John J. Ruan, Daryl Haggard +8

"Changing-look" quasars are a new class of highly variable active galactic nuclei that have changed their spectral type over surprisingly short timescales of just a few years. The…

astro-ph.GA2019★ 23 cited

Starburst and post-starburst high-redshift protogalaxies: The feedback impact of high energy cosmic rays

Ellis R. Owen, Kinwah Wu, Xiangyu Jin +2

Quenching of star-formation has been identified in many starburst and post-starburst galaxies, indicating burst-like star-formation histories (SFH) in the primordial Universe. We h…

astro-ph.GA2019★ 9 cited

Chandra Detection of Intra-cluster X-ray Sources in Fornax

Xiangyu Jin, Meicun Hou, Zhenlin Zhu +1

Based on archival {\it Chandra} observations with a total exposure of 1.3 Ms, we study X-ray point sources in the Fornax cluster of galaxies, with the primary aim of searching for…

astro-ph.GA2019★ 11 cited

Hadronic Interactions of Energetic Charged Particles in Protogalactic Outflow Environments and Implications for the Early Evolution of Galaxies

Ellis R. Owen, Xiangyu Jin, Kinwah Wu +1

We investigate the interactions of energetic hadronic particles with the media in outflows from star-forming protogalaxies. These particles undergo pion-producing interactions whic…

The Negative-ΣΣˉ Angular-Parameter Puzzle in J/ψ and ψ(2S) Decays

Strange Quark Electric Dipole Moment withTopological Anomalies

Potential of discovering Ξcc+​ in Λb​ decays

Large CP Asymmetries from Final-State Interactions in Charmful Baryonic Decays of B0→Ξc+​Ξc−​ and Bs0​→Λc+​Λc−​

Hidden strangeness in meson weak decays to baryon pair

Complete determination of SU(3)F​ amplitudes and strong phase in Λc+​→Ξ0K+

CP asymmetries in B meson two-body baryonic decays

A SPectroscopic survey of biased halos In the Reionization Era (ASPIRE): JWST Reveals a Filamentary Structure around a z=6.61 Quasar

A SPectroscopic survey of biased halos In the Reionization Era (ASPIRE): A First Look at the Rest-frame Optical Spectra of z>6.5 Quasars Using JWST

Semileptonic decays of doubly charmed baryons with Ξc​−Ξc′​ mixing

(Nearly) Model-Independent Constraints on the Neutral Hydrogen Fraction in the Intergalactic Medium at z∼5−7 Using Dark Pixel Fractions in Lyα and Lyβ Forests

Heavy quark symmetry of Λb0​ decays in quark models

Anatomy of Λc+​ semileptonic decays

Resolving puzzle in Ξc0​→Ξ−e+νe​ with Ξc​−Ξc′​ mixing

Time-reversal asymmetries in Λb​ semileptonic decays

New extraction of CP violation in b-baryon decays

Deep XMM-Newton Observations of an X-ray Weak, Broad Absorption Line Quasar at z=6.5

Study of charmless two-body baryonic B decays

Probing the disk-corona systems and broad line regions of changing-look quasars with X-ray and optical observations

Starburst and post-starburst high-redshift protogalaxies: The feedback impact of high energy cosmic rays

Chandra Detection of Intra-cluster X-ray Sources in Fornax

Hadronic Interactions of Energetic Charged Particles in Protogalactic Outflow Environments and Implications for the Early Evolution of Galaxies

The Negative- $Σ Σ ˉ$ Angular-Parameter Puzzle in $J / ψ$ and $ψ (2 S)$ Decays

Potential of discovering $Ξ_{cc}^{+}$ in $Λ_{b}$ decays

Large CP Asymmetries from Final-State Interactions in Charmful Baryonic Decays of $B^{0} \to Ξ_{c}^{+} Ξ_{c}^{-}$ and $B_{s}^{0} \to Λ_{c}^{+} Λ_{c}^{-}$

Complete determination of $S U (3)_{F}$ amplitudes and strong phase in $Λ_{c}^{+} \to Ξ^{0} K^{+}$

CP asymmetries in $B$ meson two-body baryonic decays

A SPectroscopic survey of biased halos In the Reionization Era (ASPIRE): A First Look at the Rest-frame Optical Spectra of $z > 6.5$ Quasars Using JWST

Semileptonic decays of doubly charmed baryons with $Ξ_{c} - Ξ_{c}^{'}$ mixing

(Nearly) Model-Independent Constraints on the Neutral Hydrogen Fraction in the Intergalactic Medium at $z \sim 5 - 7$ Using Dark Pixel Fractions in Ly $α$ and Ly $β$ Forests

Heavy quark symmetry of $Λ_{b}^{0}$ decays in quark models

Anatomy of $Λ_{c}^{+}$ semileptonic decays

Resolving puzzle in $Ξ_{c}^{0} \to Ξ^{-} e^{+} ν_{e}$ with $Ξ_{c} - Ξ_{c}^{'}$ mixing

Time-reversal asymmetries in $Λ_{b}$ semileptonic decays

Deep XMM-Newton Observations of an X-ray Weak, Broad Absorption Line Quasar at $z = 6.5$

Study of charmless two-body baryonic $B$ decays