We investigate the quasinormal modes (QNMs) and greybody factors of dilaton–Euler–Heisenberg (dEH) de Sitter (dS) black holes in string-inspired Euler–Heisenberg gravity. Since the axial gravitational and electromagnetic perturbations decouple, we analyze them independently. By applying the asymptotic iteration method (AIM) together with a sixth-order WKB approximation, we compute the quasinormal frequencies and find excellent agreement between the two methods. We also find that the QNM spectra depend sensitively on the magnetic charge $Q_{\text{m}}$ , cosmological constant Λ, and nonlinear coupling $\epsilon$ , with a notable topological anomaly appearing in the electromagnetic frequency trajectories. Additionally, larger values of $Q_{\text{m}}$ or the multipole number $\textit{l}$ generally suppress wave transmission, while the electromagnetic sector with $\epsilon=1$ exhibits an anomalous response.

Ming Zhang

Guo-Xin Chen

China

Xufen Zhang

Cheng-Fu Feng

Sheng-Yuan Li

Rui-Hong Yue

De-Cheng Zou

Quasinormal frequencies and greybody factors for axial perturbations of dilaton–Euler–Heisenberg de Sitter black holes * This research was supported by the National Natural Science Foundation of China (NNSFC) (12365009), the Natural Science Basic Research Program of Shaanxi Province (2026JC-YBMS-0083), and the Jiangxi Provincial Natural Science Foundation (20262BAC240347)

The Standard Model of particle physics, although remarkably successful, leaves several major questions unanswered, continuing to motivate searches for new phenomena. Multiboson interactions involving the Higgs boson are of particular interest as probes of the electroweak Lagrangian, where potential new physics may reside. In this work, we present a study of the associated production of a $\textit{W}$ boson, a Higgs boson, and a photon in proton-proton collisions at the Large Hadron Collider (LHC). Monte Carlo simulations are performed to model both the signal and background processes, and detector effects are included according to CMS specifications. Boosted decision trees are employed to optimize the event selection and enhance signal–background discrimination. We estimate that, with an integrated luminosity of 440 fb$^{−1}$, the expected significance for the $WH\gamma$ process is 0.63$\textit{σ}$, increasing to a projected 1.64$\textit{σ}$ at the High-Luminosity LHC (HL-LHC).

Youpeng Wu

United Kingdom

Jie Xiao

Andrew Michael Levin

Qiang Li

Prospects for studying the $\textit{WHγ}$ process in $\textit{pp}$ collisions at the LHC * Supported in part by the National Natural Science Foundation of China (12325504, 12061141002)

We study the isospin-violating $J/\psi \to \Lambda\bar \Sigma^0 \eta $ reaction, recently measured by the BESIII collaboration, by considering the dominant terms involving $\bar \Sigma^0$ and pairs of pseudoscalar-baryon particles that together form an $\textit{SU}$(3) singlet and can therefore couple to the $J/\psi$ . We then allow these pairs to undergo final-state interaction to produce the final $\eta \Lambda$ . We find that the relevant original channels are $\bar K N$ and $K \Xi$ , and that the incomplete cancellation of terms involving charged and neutral particles, owing to their different masses, is responsible for the reaction. With this mechanism, we find good agreement with the three experimental mass distributions.

Spain

Lian-Rong Dai

Wen-Tao Lyu

E. Oset

Study of the $ {{\boldsymbol J}/\boldsymbol\psi\bf\to \boldsymbol\Lambda\bar{\boldsymbol\Sigma}^{\bf 0}\boldsymbol\eta}$ reaction * This work is partly supported by the National Natural Science Foundation of China (12575082). This work is partly supported by the National Key R&D Program of China (2024YFE0105200), the Natural Science Foundation of Henan (252300423951), the National Natural Science Foundation of China (12475086), and the Zhengzhou University Young Student Basic Research Projects for PhD students (ZDBJ202522). This work is also partly supported by the Spanish Ministerio de Economia y Competitividad (MINECO) and European FEDER funds (FIS2017-84038-C2-1-PB, PID2020-112777GB-I00), and Generalitat Valenciana (PROMETEO/2020/023). This project has received funding from the European Union Horizon 2020 research and innovation program (H2020-INFRAIA-2018-1, 824093 of the STRONG-2020 project)

In recent years, long-lived particles (LLPs) have attracted increasing attention in searches for physics beyond the Standard Model (SM). In this paper, we investigate the discovery prospects for light, long-lived ALPs predicted by the photophobic ALP scenario through displaced-vertex signals at the CEPC, with a center-of-mass energy of $ \sqrt{s}=91.2 $ GeV and an integrated luminosity of $ {\cal{L}}= $ 100 ab$^{−1}$. After comparing several possible single-production processes for the photophobic ALP, we focus on the dominant process $ e^+ e^- \to Z \to a \gamma $ , in which the ALP $\textit{a}$ subsequently decays into a pair of charged leptons at a displaced vertex. Dedicated Monte Carlo simulations are performed for the $ \mu^+ \mu^- \gamma $ and $ \tau_h^+ \tau_h^- \not{E}_T \gamma $ signals. For the $ \mu^+\mu^-\gamma $ signal, the CEPC is sensitive to the parameter region $ g_{aWW} \in [1.27\times10^{-3},6.80\times10^{-1}]\; {\rm{TeV}}^{-1} $ for $ m_a \in [1,4]\; {\rm{GeV}} $ . For the $ \tau_h^+\tau_h^-\not{E}_T\gamma $ signal, the accessible region is $ g_{aWW} \in [7.00\times10^{-4},9.40\times10^{-3}]\; {\rm{TeV}}^{-1} $ for $ m_a \in [4,9]\; {\rm{GeV}} $ . These results demonstrate the substantial potential of the CEPC to explore light, long-lived ALPs through displaced-vertex signals, providing complementary coverage to existing searches at LEP and the LHC, as well as to the projected reach of the HL-LHC.

Chong-Xing Yue

Xin-Yang Li

Prospects for probing light photophobic axion-like particles via displaced vertex signals at the CEPC * This work was partially supported by the National Natural Science Foundation of China (12575106) and the Cultivation Fund of Liaoning Normal University for Excellent Doctoral Dissertations (YJSYB202501)

We demonstrate that mass inequalities for hadrons containing one or more heavy quarks arise primarily from the concavity of binding energies in the quark model, reflecting short-range Coulombic interactions and long-range confinement. Empirical two-body bindings $ B_{i\bar{j}} $ are extracted from spin-averaged meson masses, ensuring model independence and direct use of experimental data. Fitting these quantities as functions of the reduced mass $ \mu_{ij} $ reveals a critical confinement scale of 1.34 fm, at which the bindings become positive. The concavity of $ B(1/\mu) $ motivates Jensen-like relations under flavor permutation, reproducing relations such as $ m_{x\bar{y}} \gt \dfrac{1}{2}(m_{x\bar{x}} + m_{y\bar{y}}) $ and the baryon analog $ m_{xyz} \gt \dfrac{1}{3}(m_{xxx} + m_{yyy} + m_{zzz}) $ . Hadron mass decomposition validates $ \Delta M_{ \rm{EXP}} \approx \Delta B + \Delta C $ with $ \sigma \sim 2.07 $ MeV for mesons and baryons. Using this decomposition, we obtain approximate mass estimates for unobserved heavy baryons (e.g., $ M(\Omega_{b}^{\ast})\approx 6076.6\, $ MeV, $ M(\Xi_{cc}^{\ast})\approx 3703.6\, $ MeV, and $ M(\Omega_{cc}^{\ast})\approx 3802.4\, $ MeV) and identify favored quark-exchange scattering channels. The present analysis is phenomenological and does not constitute a rigorous three-body derivation.

Wen-Xuan Zhang

Wen-Nian Liu

Duojie Jia

Mass relations in heavy hadrons from Jensen-like inequalities * Duojie Jia is supported by the National Natural Science Foundation of China (12165017)

We present the first application of the unbiased exponential resummation (UER) method to the determination of the QCD pseudocritical temperature <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><msub><mi mathvariant="normal">T</mi><mi>pc</mi></msub></math> at vanishing baryon chemical potential <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><msub><mi>μ</mi><mi>B</mi></msub></math>. By reconstructing the finite-density baryon number susceptibility <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><msubsup><mi>χ</mi><mn>2</mn><mi>B</mi></msubsup></math>, we define two thermal-derivative observables whose peak positions yield <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><msubsup><mi mathvariant="normal">T</mi><mi>pc</mi><mi>T</mi></msubsup><mo>=</mo><mn>160.2</mn><mo stretchy="false">(</mo><mn>4</mn><mo stretchy="false">)</mo><mo stretchy="false">(</mo><mn>3</mn><mo stretchy="false">)</mo><mtext> </mtext><mtext> </mtext><mi>MeV</mi></math> and <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><msubsup><mi mathvariant="normal">T</mi><mi>pc</mi><mi>C</mi></msubsup><mo>=</mo><mn>158.1</mn><mo stretchy="false">(</mo><mn>5</mn><mo stretchy="false">)</mo><mo stretchy="false">(</mo><mn>3</mn><mo stretchy="false">)</mo><mtext> </mtext><mtext> </mtext><mi>MeV</mi></math>. We also show that the pseudocritical temperature, <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><msubsup><mi mathvariant="normal">T</mi><mi>pc</mi><mi>χ</mi></msubsup></math> obtained from the peak of the fourth-order baryon number susceptibility <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><msubsup><mi>χ</mi><mn>4</mn><mi>B</mi></msubsup></math> is consistent with these determinations and with previous lattice-QCD results based on Taylor expansions [1]. Further, we demonstrate that scaling relations [2] between <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><msubsup><mi>χ</mi><mn>4</mn><mi>B</mi></msubsup></math> and the thermal derivatives of <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><msubsup><mi>χ</mi><mn>2</mn><mi>B</mi></msubsup></math> yield mutually consistent estimates of the leading second order curvature coefficient <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><msubsup><mi>κ</mi><mn>2</mn><mi>B</mi></msubsup></math> at the corresponding pseudocritical temperatures. A direct analysis of the <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><msub><mi>μ</mi><mi>B</mi></msub></math> dependence of the pseudocritical temperatures provides an independent but substantially less constrained determination of the curvature, which remains statistically consistent with the scaling-based estimates. These results demonstrate the consistency of this UER method with the expected scaling behavior and establish it as a complementary approach for probing the QCD crossover at small finite baryon density.

Germany

Sabarnya Mitra

QCD crossover temperature and curvature coefficient from unbiased exponential resummation at physical quark masses in (<math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><mn>2</mn><mo>+</mo><mn>1</mn></mrow></math>)-flavor lattice QCD

We investigate the capabilities of upcoming kiloton-scale neutrino detectors, such as Hyper-Kamiokande, in determining the primary cosmic-ray spectrum. These detectors provide full-sky coverage and long-term monitoring, unlike traditional satellite and balloon experiments that measure cosmic-ray flux at specific altitudes and locations. By analyzing the atmospheric neutrino flux generated by cosmic-ray interactions, we demonstrate that future detectors can differentiate between various cosmic-ray models with high statistical significance, even when accounting for uncertainties in neutrino cross sections and hadronic interactions. We introduce a technique for reconstructing the primary cosmic-ray spectrum using neutrino measurements, which reduces the flux uncertainty from approximately 20% to about 7%. We then show that Hyper-K has the potential to increase sensitivity to neutrino oscillation parameters, such as <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><msup><mi>sin</mi><mn>2</mn></msup><msub><mi>θ</mi><mn>23</mn></msub></math>, by a factor of 2. Our results highlight the complementary role of neutrino detectors in cosmic-ray physics and their critical importance for precision measurements in particle astrophysics.

Australia

United States

Stephan A. Meighen-Berger

Jayden L. Newstead

Louis E. Strigari

Toward measuring the low-energy cosmic-ray spectrum with next-generation neutrino detectors

In this paper we revisit, from a different perspective, a long-standing question: “Is the systematic deficit observed in all branching ratios mediated by a <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mi>b</mi><mo stretchy="false">→</mo><mi>s</mi><mi>μ</mi><mi>μ</mi></math> transition due to new physics, or to a hypothetical constant unknown universal hadronic contribution that mimics new physics?” The key observation that allows us to distinguish between these two possibilities is that nonperturbative contributions associated with <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mi>c</mi><mover accent="true"><mi>c</mi><mo stretchy="false">¯</mo></mover></math> loops affect inclusive <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mi>B</mi><mo stretchy="false">→</mo><msub><mi>X</mi><mi>s</mi></msub><mo>ℓ</mo><mo>ℓ</mo></math> and exclusive <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mi>B</mi><mo stretchy="false">→</mo><msup><mi>K</mi><mrow><mo stretchy="false">(</mo><mo>*</mo><mo stretchy="false">)</mo></mrow></msup><mo>ℓ</mo><mo>ℓ</mo></math> modes differently. In inclusive decays, factorizable contributions are exactly determined from data on <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><msup><mi>e</mi><mo>+</mo></msup><msup><mi>e</mi><mo>−</mo></msup><mo stretchy="false">→</mo><mi>hadrons</mi></math>, while nonfactorizable corrections are described by resolved-photon contributions at low <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><msup><mi>q</mi><mn>2</mn></msup></math> and by local power corrections at high <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><msup><mi>q</mi><mn>2</mn></msup></math>. In exclusive decays, by contrast, hypothetical charming-penguin effects, beyond those already included in current uncertainty estimates, could appear, in a worst-case scenario, as a constant, universal contribution that it seems, in principle, indistinguishable from genuine new physics. We identify two observables, constructed from ratios of exclusive to inclusive modes, that can discriminate between a new physics contribution and a constant hadronic contribution. Moreover, these ratios can be measured directly by LHCb, as they do not require any normalization to <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mi>J</mi><mo>/</mo><mi>ψ</mi><msup><mi>K</mi><mrow><mo stretchy="false">(</mo><mo>*</mo><mo stretchy="false">)</mo></mrow></msup></math> branching fractions from B factories. A preliminary evaluation of these observables with present data shows some preference for the new physics interpretation. In a complementary test, a comparison between inclusive measurements and the corresponding sum of exclusive modes at high <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><msup><mi>q</mi><mn>2</mn></msup></math> similarly disfavors an explanation based on a constant hadronic contribution. Finally, we provide projections for the new observables based on expected LHCb and Belle II measurements in the near future.

P. Alvarez-Cartelle

B. Capdevila

E. Lunghi

J. Matias

Probing unknown nonperturbative effects in <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mi>b</mi><mo stretchy="false">→</mo><mi>s</mi><mo>ℓ</mo><mo>ℓ</mo></math> with inclusive and exclusive observables

The proximity of the narrow <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><msub><mi>P</mi><mi>c</mi></msub><mo stretchy="false">(</mo><mn>4312</mn><mo stretchy="false">)</mo></math>, <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><msub><mi>P</mi><mi>c</mi></msub><mo stretchy="false">(</mo><mn>4440</mn><mo stretchy="false">)</mo></math>, and <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><msub><mi>P</mi><mi>c</mi></msub><mo stretchy="false">(</mo><mn>4457</mn><mo stretchy="false">)</mo></math> structures to the <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><msub><mi mathvariant="normal">Σ</mi><mi>c</mi></msub><msup><mover accent="true"><mi>D</mi><mo stretchy="false">¯</mo></mover><mrow><mo stretchy="false">(</mo><mo>*</mo><mo stretchy="false">)</mo></mrow></msup></math> thresholds motivates their interpretation as hadronic molecules. We treat the <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><msub><mi>P</mi><mi>c</mi></msub><mo stretchy="false">(</mo><mn>4312</mn><mo stretchy="false">)</mo></math> as an <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mi>S</mi></math>-wave <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><msub><mi mathvariant="normal">Σ</mi><mi>c</mi></msub><mover accent="true"><mi>D</mi><mo stretchy="false">¯</mo></mover></math> state with <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><msup><mi>J</mi><mi>P</mi></msup><mo>=</mo><mn>1</mn><mo>/</mo><msup><mn>2</mn><mo>−</mo></msup></math> and examine both <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><msup><mi>J</mi><mi>P</mi></msup><mo>=</mo><mn>1</mn><mo>/</mo><msup><mn>2</mn><mo>−</mo></msup></math> and <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mn>3</mn><mo>/</mo><msup><mn>2</mn><mo>−</mo></msup><mtext> </mtext><mtext> </mtext><msub><mi mathvariant="normal">Σ</mi><mi>c</mi></msub><msup><mover accent="true"><mi>D</mi><mo stretchy="false">¯</mo></mover><mo>*</mo></msup></math> assignments for each heavier peak. The selected <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mi>S</mi></math>-wave open-charm transitions to <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><msub><mi mathvariant="normal">Λ</mi><mi>c</mi></msub><msup><mover accent="true"><mi>D</mi><mo stretchy="false">¯</mo></mover><mrow><mo stretchy="false">(</mo><mo>*</mo><mo stretchy="false">)</mo></mrow></msup></math> are calculated at Born order in the quark-interchange model, including the prior and post rearrangement diagrams and their color, flavor, spin, and spatial matrix elements. Across the input variations considered, the quark-interchange widths robustly favor <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><msub><mi mathvariant="normal">Λ</mi><mi>c</mi></msub><msup><mover accent="true"><mi>D</mi><mo stretchy="false">¯</mo></mover><mo>*</mo></msup></math> over <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><msub><mi mathvariant="normal">Λ</mi><mi>c</mi></msub><mover accent="true"><mi>D</mi><mo stretchy="false">¯</mo></mover></math> for every <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><msup><mi>J</mi><mi>P</mi></msup><mo>=</mo><mn>1</mn><mo>/</mo><msup><mn>2</mn><mo>−</mo></msup></math> assignment. At either heavier peak mass, the <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><msub><mi mathvariant="normal">Λ</mi><mi>c</mi></msub><msup><mover accent="true"><mi>D</mi><mo stretchy="false">¯</mo></mover><mo>*</mo></msup></math> width for <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><msup><mi>J</mi><mi>P</mi></msup><mo>=</mo><mn>3</mn><mo>/</mo><msup><mn>2</mn><mo>−</mo></msup></math> is suppressed by approximately one order of magnitude relative to <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><msup><mi>J</mi><mi>P</mi></msup><mo>=</mo><mn>1</mn><mo>/</mo><msup><mn>2</mn><mo>−</mo></msup></math>, providing a potential decay-based discriminator of the spin assignments. The large channel hierarchies arise from spatial overlaps and interference between spin-independent and hyperfine contributions and are not universal heavy-quark-spin-symmetry ratios. We also explore a retarded one-pion-exchange transition at first Born order. It affects <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><msub><mi>P</mi><mi>c</mi></msub><mo stretchy="false">(</mo><mn>4312</mn><mo stretchy="false">)</mo><mo stretchy="false">→</mo><msub><mi mathvariant="normal">Λ</mi><mi>c</mi></msub><msup><mover accent="true"><mi>D</mi><mo stretchy="false">¯</mo></mover><mo>*</mo></msup></math> most strongly, while the coherent widths remain sensitive to the cutoff, energy-transfer prescription, short-distance subtraction, and unresolved relative matching sign. The quark-interchange hierarchies are therefore the central predictions, whereas the pion-exchange results quantify matching sensitivity. Measurements of the <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><msub><mi mathvariant="normal">Λ</mi><mi>c</mi></msub><msup><mover accent="true"><mi>D</mi><mo stretchy="false">¯</mo></mover><mo>*</mo></msup></math> modes can directly test these patterns.

India

Vandan Patel

Ajay Kumar Rai

Selected open-charm decays of the narrow <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><msub><mi>P</mi><mi>c</mi></msub></math> states: Quark-interchange predictions and pion-exchange sensitivity

Sterile states of matter, represented by a parallel “mirror” sector, may contribute to the observed dark matter in the Universe. We investigated the parameter space of neutron (<math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mi>n</mi></math>) to mirror-neutron <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mo stretchy="false">(</mo><msup><mi>n</mi><mo>′</mo></msup><mo stretchy="false">)</mo></math> oscillations, in the case where the two states are not necessarily mass degenerate, taking into account interactions in the mirror sector. By tuning the magnitude of an applied magnetic field in the range <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mn>5</mn><mtext> </mtext><mtext> </mtext><mrow><mi mathvariant="normal">μ</mi><mi mathvariant="normal">T</mi></mrow><mo>&lt;</mo><mi>B</mi><mo>&lt;</mo><mn>360</mn><mtext> </mtext><mtext> </mtext><mrow><mi mathvariant="normal">μ</mi><mi mathvariant="normal">T</mi></mrow></math> to corresponding resonance conditions for finite mass splitting, we derive exclusion limits for the <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mi>n</mi><mo>−</mo><msup><mi>n</mi><mo>′</mo></msup></math> oscillation time constant reaching about 20 s over the mass-difference range <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><mn>0.3</mn><mo>−</mo><mn>22</mn><mtext> </mtext><mtext> </mtext><mi mathvariant="normal">p</mi><mtext> </mtext><mi>eV</mi></mrow></math>. In parts of this parameter range, our limits exceed the model-dependent neutron-star-cooling bound, providing the first experimental constraints in this scenario that are more stringent than this astrophysical estimate.

Switzerland

N.J. Ayres

Italy

Z. Berezhiani

G. Bison

Poland

K. Bodek

V. Bondar

P.J. Chiu

M. Daum

C.B. Doorenbos

S. Emmenegger

K. Kirch

V. Kletzl

J. Krempel

B. Lauss

D. Pais

I. Rienäcker

D. Ries

D. Rozpędzik

P. Schmidt-Wellenburg

K.S. Tanaka

J. Zejma

N. Ziehl

G. Zsigmond

Laboratory constraints on peV-scale mass splitting between ordinary and sterile neutron states