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$\eta_c$ production at LHC and indications on the understanding of $J/\psi$ production
/ Han, Hao (Peking U. ; Peking U., SKLNPT) ; Ma, Yan-Qing (Maryland U. ; Peking U., CHEP) ; Meng, Ce (Peking U. ; Peking U., SKLNPT) ; Shao, Hua-Sheng (CERN ; Peking U. ; Peking U., SKLNPT) ; Chao, Kuang-Ta (Unlisted, CN ; Peking U., CHEP ; Peking U., SKLNPT)
We present a complete evaluation for the prompt $\eta_c$ production at the LHC at next-to-leading order in $\alpha_s$ in nonrelativistic QCD. By assuming heavy quark spin symmetry, the study of $\eta_c$ production results in a very strong constraint on the upper bound of the color-octet long distance matrix element $\mopa$ of $J/\psi$. [...]
arXiv:1411.7350.-
2015 - 5 p.
- Published in : Phys. Rev. Lett. 114 (2015) 092005
APS Open Access article: PDF; Fulltext: PDF; External link: Preprint
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High-resolution laser spectroscopy of light gold isotopes: investigation of \lq\lq island of deformation'' and shape coexistence
/ Yang, XiaoFei (School of Physics and State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing 100871, China) ; Bai, ShiWei (School of Physics and State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing 100871, China) ; Neyens, Gerda (KU Leuven, Instituut voor Kern- en Stralingsfysica, B-3001 Leuven, Belgium)
CERN-INTC-2023-044 ; INTC-P-667.
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2023.
Fulltext
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One-to-one correspondence reconstruction at the electron-positron Higgs factory
/ Wang, Yuexin (Beijing, Inst. High Energy Phys.) ; Liang, Hao (Beijing, Inst. High Energy Phys. ; Beijing, GUCAS ; Vanderbilt U.) ; Zhu, Yongfeng (Peking U., SKLNPT) ; Che, Yuzhi (Beijing, Inst. High Energy Phys. ; Beijing, GUCAS) ; Xia, Xin (Beijing, Inst. High Energy Phys. ; Beijing, GUCAS) ; Qu, Huilin (CERN) ; Zhou, Chen (Peking U., SKLNPT) ; Zhuang, Xuai (Beijing, Inst. High Energy Phys. ; Beijing, GUCAS) ; Ruan, Manqi (Beijing, Inst. High Energy Phys. ; Beijing, GUCAS)
We propose one-to-one correspondence reconstruction for electron-positron Higgs factories. [...]
arXiv:2411.06939.
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Searching for lepton number violating $\Lambda$ baryon decays mediated by GeV-scale Majorana neutrino with LHCb
/ Zhang, Guangshuai (Peking U. ; Peking U., SKLNPT) ; Ma, Bo-Qiang (Peking U. ; Peking U., SKLNPT ; Peking U., CHEP ; CICQM, Beijing)
We consider the lepton-number-violating processes in $\Lambda_b$/$\Lambda_c$ decays mediated by on-shell GeV-scale sterile neutrino. We calculate the branching ratio for the following processes: $\Lambda_b^{0} \rightarrow \mathcal{B}^+ \mu^{-}\mu^- \pi^+$, where $\mathcal{B}^+$ is $\Lambda_c^+$ or proton, and $\Lambda_c^{+} \rightarrow \Lambda \mu^{+}\mu^+ \pi^-$, as function of the mass of the sterile neutrino $m_N$ and the heavy-light mixing coefficient of the extended Pontecorvo-Maki-Nakagawa-Sakata (PMNS) matrix $|U_{\mu N}|^2$. [...]
arXiv:2101.05566.-
2021-02-16 - 8 p.
- Published in : Phys. Rev. D 103 (2021) 033004
Article from SCOAP3: PDF; Fulltext: PDF;
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VBS ${\rm W}^\pm {\rm W}^\pm {\rm H}$ production at the HL-LHC and a 100 TeV $pp$-collider
/ Englert, Christoph (SUPA, UK ; Glasgow U.) ; Li, Qiang (Peking U. ; Peking U., SKLNPT ; CAS, CEPP, Beijing) ; Spannowsky, Michael (Durham U., IPPP) ; Wang, Mengmeng (Peking U., SKLNPT ; Peking U.) ; Wang, Lei (Peking U., SKLNPT ; Peking U.)
${\rm W}^\pm {\rm W}^\pm {\rm H}$ production at hadron colliders through vector boson scattering is a so far unconsidered process, which leads to a clean signature of two same-sign charged leptons and two widely separated jets. This process is sensitive to the ${\rm HHH}$ and ${\rm WWHH}$ couplings and any deviation of these couplings from their SM predictions serves as direct evidence of new physics beyond the SM. [...]
arXiv:1702.01930.-
2017-06-21 - 13 p.
- Published in : Int. J. Mod. Phys. A 32 (2017) 1750106
Preprint: PDF;
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Strong LHCb evidence supporting the existence of the hidden-charm molecular pentaquarks
/ Chen, Rui (Lanzhou U. ; Lanzhou, Inst. Modern Phys. ; Peking U. ; Peking U., SKLNPT) ; Sun, Zhi-Feng (Lanzhou U. ; Lanzhou, Inst. Modern Phys.) ; Liu, Xiang (Lanzhou U. ; Lanzhou, Inst. Modern Phys.) ; Zhu, Shi-Lin (Peking U. ; Peking U., SKLNPT ; CICQM, Beijing ; Peking U., CHEP)
On March 26th, 2019, at the Rencontres de Moriond QCD conference, the LHCb Collaboration reported the observation of three new pentaquarks, namely $P_c(4312)$, $P_c(4440)$ and $P_c(4457)$, which are consistent with the loosely bound molecular hidden-charm pentaquark states composed of an S-wave charmed baryon $\Sigma_c$ and an S-wave anti-charmed meson ($\bar{D}, \bar{D}^*$). In this work, we present a direct calculation by the one-boson-exchange (OBE) model and demonstrate explicitly that the $P_c(4312)$, $P_c(4440)$ and $P_c(4457)$ do correspond to the loosely bound $\Sigma_c\bar{D}$ with $(I=1/2,J^P=1/2^-)$, $\Sigma_c\bar{D}^*$ with $(I=1/2,J^P=1/2^-)$ and $\Sigma_c\bar{D}^*$ with $(I=1/2,J^P=3/2^-)$, respectively..
arXiv:1903.11013.-
2019-07-11 - 6 p.
- Published in : Phys. Rev. D 100 (2019) 011502
Article from SCOAP3: PDF; Fulltext: PDF;
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First observation of a shape isomer and a low-lying strongly-coupled prolate band in neutron-deficient semi-magic $^{187}$Pb
/ Zhang, W Q (Lanzhou, Inst. Modern Phys. ; CAS, Beijing) ; Andreyev, A N (York U., England ; JAERI, Tokai) ; Liu, Z (Lanzhou, Inst. Modern Phys. ; CAS, Beijing) ; Seweryniak, D (Argonne, PHY) ; Huang, H (Lanzhou, Inst. Modern Phys. ; CAS, Beijing) ; Li, Z H (Peking U., SKLNPT) ; Li, J G (Lanzhou, Inst. Modern Phys. ; Peking U., SKLNPT) ; Guo, C Y (Peking U., SKLNPT) ; Doherty, D T (Surrey U.) ; Barzakh, A E (St. Petersburg, INP) et al.
Prompt and delayed γ-ray spectroscopy of the neutron-deficient, semi-magic isotope 187Pb has been performed using the recoil-decay and isomer-decay tagging techniques at the Argonne Gas-Filled Analyzer. A new 5.15(15)-μs isomeric state at only 308 keV above the spherical 3/2− ground state is identified and classified as a shape isomer. [...]
2022 - 7 p.
- Published in : Phys. Lett. B 829 (2022) 137129
Publication: PDF;
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Accelerating Resonance Searches via Signature-Oriented Pre-training
/ Li, Congqiao (Peking U., SKLNPT) ; Agapitos, Antonios (Peking U., SKLNPT) ; Drews, Jovin (Hamburg U.) ; Duarte, Javier (UC, San Diego) ; Fu, Dawei (Peking U., SKLNPT) ; Gao, Leyun (Peking U., SKLNPT) ; Kansal, Raghav (UC, San Diego) ; Kasieczka, Gregor (Hamburg U.) ; Moureaux, Louis (Hamburg U.) ; Qu, Huilin (CERN) et al.
The search for heavy resonances beyond the Standard Model (BSM) is a key objective at the LHC. [...]
arXiv:2405.12972 ; FERMILAB-PUB-24-0699-V.
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Fermilab Library Server - Fulltext - Fulltext
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FLAG Review 2024
/ Flavour Lattice Averaging Group (FLAG) Collaboration
We review lattice results related to pion, kaon, $D$-meson, $B$-meson, and nucleon physics with the aim of making them easily accessible to the nuclear and particle physics communities. [...]
arXiv:2411.04268 ; CERN-TH-2024-192 ; FERMILAB-PUB-24-0785-T.
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Fermilab Library Server - Fulltext - Fulltext
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