An analytical and numerical systematic study of the neutrino mass matrix with one texture zero is presented in a basis where the charged leptons are diagonal. Under the assumption that neutrinos are Dirac particles, the analysis is conducted in detail for the normal and inverted hierarchy mass spectra. Our study is performed without any approximations, first analytically and then numerically, using current neutrino oscillation data. The analysis constrains the parameter space in such a way that, among the six possible one-texture-zero patterns, only four are favored in the normal hierarchy and one in the inverted hierarchy by current oscillation data at the $3 \sigma$ level. Phenomenological implications for the lepton CP-violating phase and neutrino masses are also explored.

Colombia

Richard H. Benavides

Yessica Lenis

John D. Gómez

William A. Ponce

One texture zero for Dirac neutrinos in a diagonal charged lepton basis * Richard H. Benavides acknowledges additional financial support from Minciencias (CD82315 CT ICETEX 2021-1080)

One-loop contributions for the decay process $ H^{\pm} \rightarrow W^{\pm}Z $ within the Two-Higgs-Doublet Model (THDM) are computed in the general $ {\cal{R}}_{\xi} $ gauge, and its phenomenological applications at future muon–TeV colliders are investigated. Analytic results are confirmed by several consistency tests, including those of $\textit{ξ}$-independence, renormalization-scale stability, and the ultraviolet finiteness of the one-loop amplitude. We first perform an updated parameter scan of the Type-X THDM in phenomenological studies. The production of charged Higgs boson pairs at future muon–TeV colliders is then investigated through two processes: $ \mu^+\mu^- \rightarrow H^+H^- \rightarrow W^{\pm}W^{\mp}Zh $ and $ \mu^+\mu^- \rightarrow \gamma\gamma \rightarrow H^+H^- \rightarrow W^{\pm}W^{\mp}Zh $ . Both signal events and their significance are evaluated considering the corresponding Standard Model backgrounds. We find that the signal significances can exceed $ 5\sigma $ at several benchmark points in the viable parameter space of the Type-X THDM.

Vietnam

Dzung Tri Tran

Quang Hoang-Minh Pham

Khoa Ngo-Thanh Ho

Khiem Hong Phan

One-loop expressions for ${H^\pm \rightarrow W^\pm Z} $ and their implications at muon-TeV colliders * This research is funded by Vietnam National Foundation for Science and Technology Development (NAFOSTED) (103.01-2023.16)

We extend the work of [1] to the case in which final-state jets, produced in association with a Higgs or vector boson, are defined using the $\textit{k}$ algorithm. We thereby compute the full distribution of the invariant mass squared of the leading, highest-$\textit{p}$ jet, including both clustering and non-global logarithms, up to four-loops in perturbation theory. Our results are derived within the eikonal approximation under the assumption of strong ordering in the momenta of the final-state partons, and are consequently valid up to single-logarithmic accuracy. The final semi-analytical expressions retain the complete dependence on both colour and the jet radius. The broad features of $\textit{k}$ clustering observed in $\textit{e}$ $\textit{e}$ processes persist in hadronic collisions, together with novel characteristics that are absent in the $\textit{e}$ $\textit{e}$ environment.

Algeria

Kamel Khelifa-Kerfa

Saudi Arabia

Mohamed Benghanem

Jet-mass in V/H+jet up to four-loops with $\textit{k}$

In this manuscript, we study the general scalar leptoquark contributions to the <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mi>g</mi><mi>g</mi><mo stretchy="false">→</mo><mi>Z</mi><mi>h</mi></math> process at a one-loop level. We find that the contributions only show up for the off diagonal Higgs and <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mi>Z</mi></math> boson interactions with scalar leptoquarks, which can lead to new tensor structures different from the standard model. In the one-field and two-field models, the contributions vanish exactly; thus, the contributions are possible at least in the three-field models. We exemplify the contributions in the <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><msub><mi>S</mi><mn>1</mn></msub><mo>+</mo><msub><mover accent="true"><mi>R</mi><mo stretchy="false">˜</mo></mover><mn>2</mn></msub><mo>+</mo><msub><mi>S</mi><mn>3</mn></msub></math> model, which can appear in the presence of scalar leptoquark mass splittings and <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mi>C</mi><mi>P</mi></math> violation. In view of the heavy scalar leptoquark mass suppression, the leading contributions are typically small and difficult to observe at hadron colliders. However, this work offers a quantitative and systematic investigation of scalar leptoquark contributions, also making it valuable for the new physics studies in other models.

China

Shi-Ping He

Scalar leptoquark contributions to the <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mi>g</mi><mi>g</mi><mo stretchy="false">→</mo><mi>Z</mi><mi>h</mi></math> process

We explore the potential manifestation of a hexaquark, the H particle, as a constituent within neutron stars. The H particle, with a quark content of $\textit{uuddss}$, is constructed within the Chromomagnetic Interaction (CMI) framework. Specifically, we contemplate the flavor-singlet state H with $$J^P=0^+$$ . Our computations indicate that the three-flavor hexaquark state, the H particle, possesses a lower mass of $$2212.7~\textrm{MeV}$$ in comparison to the $$d^*(2380)$$ , implying greater stability than the two-flavor $$d^*(2380)$$ . The analysis involving the H particle is carried out using the relativistic mean-field (RMF) model. We investigate the influence of H particle couplings, a key factor in determining the system stability, and focus on the potential existence of H particle within neutron stars. We find that H particle could potentially endure as a stable constituent within neutron stars, and lead to a reduction of the maximum mass.

Xuhao Wu

Liming Wang

Hong-Tao An

Min Ju

Hong Shen

Properties of H particle-admixed compact star

We examine the effects of soft gluons on Higgs boson production in association with a <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mi>Z</mi></math> boson at the Large Hadron Collider (LHC). Utilizing the universal cusp anomalous dimensions and splitting kernels, we analyze effects of soft gluons on the gluon fusion <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mi>Z</mi><mi>H</mi></math> process, focusing on the total production cross section as well as the invariant mass distribution at the next-to-leading logarithmic level. Additionally, we estimate the next-to-soft effects on this subprocess to the same level of accuracy. A detailed phenomenological analysis is performed for the 13.6 TeV LHC. Finally, combining these results with those from other subprocesses, we provide comprehensive predictions for the <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mi>Z</mi><mi>H</mi></math> production cross section and the invariant mass distribution that will be valuable for comparison with experimental data from the upcoming LHC run as well as the future hadron colliders.

Germany

Goutam Das

India

Chinmoy Dey

M.C. Kumar

United Kingdom

Kajal Samanta

Soft gluon resummation for gluon fusion <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mi>Z</mi><mi>H</mi></math> production

We calculate higher-order soft-gluon corrections for the associated production of a top-antitop quark pair and a Higgs boson ( <math altimg='si1.svg'><mrow><mi>t</mi><mover accent='true'><mi>t</mi><mo>&#175;</mo></mover><mi>H</mi></mrow></math> production) using resummation in one-particle-inclusive (1PI) kinematics. By adding these corrections to NLO QCD and NLO electroweak (EW) results, we present cross sections through approximate N 3LO (aN 3LO) in QCD and NLO in EW for <math altimg='si1.svg'><mrow><mi>t</mi><mover accent='true'><mi>t</mi><mo>&#175;</mo></mover><mi>H</mi></mrow></math> production at LHC energies. These aN 3LO QCD + NLO EW results provide significant enhancements over lower orders and a reduced scale dependence. Based on our results and current experimental data, we derive a constraint on the deviation of the top quark Yukawa coupling from the Standard Model value which is a probe of new physics beyond it. We also calculate top-quark differential distributions in transverse momentum and rapidity.

United States

Nikolaos Kidonakis

Japan

Nodoka Yamanaka

Higher-order QCD and electroweak corrections for <math altimg='si1.svg'><mrow><mi>t</mi><mover accent='true'><mi>t</mi><mo>&#175;</mo></mover><mi>H</mi></mrow></math> production

Searches are presented for <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><msubsup><mi>B</mi><mi>c</mi><mo>+</mo></msubsup><mo stretchy="false">→</mo><mi>D</mi><msup><mi>h</mi><mo>+</mo></msup><msup><mi>h</mi><mo>−</mo></msup></math> decays, where <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mi>D</mi></math> is a charmed meson and <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><msup><mi>h</mi><mo>±</mo></msup></math> is a charged pion or kaon, using <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mi>p</mi><mi>p</mi></math> collision data collected by the LHCb experiment corresponding to an integrated luminosity of <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mn>9</mn><mtext> </mtext><mtext> </mtext><msup><mi>fb</mi><mrow><mo>−</mo><mn>1</mn></mrow></msup></math>. The decays <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><msubsup><mi>B</mi><mi>c</mi><mo>+</mo></msubsup><mo stretchy="false">→</mo><msup><mi>D</mi><mo>+</mo></msup><msup><mi>K</mi><mo>+</mo></msup><msup><mi>π</mi><mo>−</mo></msup></math>, <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><msubsup><mi>B</mi><mi>c</mi><mo>+</mo></msubsup><mo stretchy="false">→</mo><msup><mi>D</mi><mrow><mo>*</mo><mo>+</mo></mrow></msup><msup><mi>K</mi><mo>+</mo></msup><msup><mi>π</mi><mo>−</mo></msup></math>, and <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><msubsup><mi>B</mi><mi>c</mi><mo>+</mo></msubsup><mo stretchy="false">→</mo><msubsup><mi>D</mi><mi>s</mi><mo>+</mo></msubsup><msup><mi>K</mi><mo>+</mo></msup><msup><mi>K</mi><mo>−</mo></msup></math> are observed for the first time. Their branching fractions, expressed as ratios relative to that of the <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><msubsup><mi>B</mi><mi>c</mi><mo>+</mo></msubsup><mo stretchy="false">→</mo><msubsup><mi>B</mi><mi>s</mi><mn>0</mn></msubsup><msup><mi>π</mi><mo>+</mo></msup></math> decay, are determined to be <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><mi mathvariant="script">R</mi><mo stretchy="false">(</mo><msubsup><mrow><mi>B</mi></mrow><mrow><mi>c</mi></mrow><mrow><mo>+</mo></mrow></msubsup><mo stretchy="false">→</mo><msup><mrow><mi>D</mi></mrow><mrow><mo>+</mo></mrow></msup><msup><mrow><mi>K</mi></mrow><mrow><mo>+</mo></mrow></msup><msup><mrow><mi>π</mi></mrow><mrow><mo>−</mo></mrow></msup><mo stretchy="false">)</mo><mo>=</mo><mo stretchy="false">(</mo><mn>1.96</mn><mo>±</mo><mn>0.23</mn><mo>±</mo><mn>0.08</mn><mo>±</mo><mn>0.10</mn><mo stretchy="false">)</mo><mo>×</mo><msup><mn>10</mn><mrow><mo>−</mo><mn>3</mn></mrow></msup></mrow></math>, <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><mi mathvariant="script">R</mi><mo stretchy="false">(</mo><msubsup><mrow><mi>B</mi></mrow><mrow><mi>c</mi></mrow><mrow><mo>+</mo></mrow></msubsup><mo stretchy="false">→</mo><msup><mrow><mi>D</mi></mrow><mrow><mo>*</mo><mo>+</mo></mrow></msup><msup><mrow><mi>K</mi></mrow><mrow><mo>+</mo></mrow></msup><msup><mrow><mi>π</mi></mrow><mrow><mo>−</mo></mrow></msup><mo stretchy="false">)</mo><mo>=</mo><mspace linebreak="goodbreak"></mspace><mo stretchy="false">(</mo><mn>3.67</mn><mo>±</mo><mn>0.55</mn><mo>±</mo><mn>0.24</mn><mo>±</mo><mn>0.20</mn><mo stretchy="false">)</mo><mo>×</mo><msup><mn>10</mn><mrow><mo>−</mo><mn>3</mn></mrow></msup></mrow></math>, <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><mi mathvariant="script">R</mi><mo stretchy="false">(</mo><msubsup><mrow><mi>B</mi></mrow><mrow><mi>c</mi></mrow><mrow><mo>+</mo></mrow></msubsup><mo stretchy="false">→</mo><msubsup><mrow><mi>D</mi></mrow><mrow><mi>s</mi></mrow><mrow><mo>+</mo></mrow></msubsup><msup><mrow><mi>K</mi></mrow><mrow><mo>+</mo></mrow></msup><msup><mrow><mi>K</mi></mrow><mrow><mo>−</mo></mrow></msup><mo stretchy="false">)</mo><mo>=</mo><mo stretchy="false">(</mo><mn>1.61</mn><mo>±</mo><mn>0.35</mn><mo>±</mo><mn>0.13</mn><mo>±</mo><mn>0.07</mn><mo stretchy="false">)</mo><mo>×</mo><msup><mn>10</mn><mrow><mo>−</mo><mn>3</mn></mrow></msup></mrow></math>, where the first uncertainty is statistical, the second is systematic, and the third is due to the limited precision on the <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mi>D</mi></math>-meson branching fractions. The decay channels proceed primarily through excited <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><msup><mi>K</mi><mn>0</mn></msup></math> or <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><msup><mi>D</mi><mn>0</mn></msup></math> resonances or <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mi>ϕ</mi></math> mesons, and open a new avenue for studies of charge-parity violation in beauty mesons.

Netherlands

R. Aaij

A.S.W. Abdelmotteleb

Switzerland

C. Abellan Beteta

F. Abudinén

T. Ackernley

A.A. Adefisoye

Spain

B. Adeva

M. Adinolfi

P. Adlarson

France

C. Agapopoulou

C.A. Aidala

Z. Ajaltouni

S. Akar

K. Akiba

Italy

P. Albicocco

J. Albrecht

R. Aleksiejunas

CERN

F. Alessio

P. Alvarez Cartelle

R. Amalric

Brazil

S. Amato

J.L. Amey

Y. Amhis

L. An

L. Anderlini

M. Andersson

P. Andreola

M. Andreotti

S. Andres Estrada

A. Anelli

D. Ao

C. Arata

F. Archilli

Z. Areg

M. Argenton

Costa Rica

S. Arguedas Cuendis

L. Arnone

A. Artamonov

M. Artuso

E. Aslanides

R. Ataíde Da Silva

M. Atzeni

B. Audurier

J.A. Authier

D. Bacher

I. Bachiller Perea

S. Bachmann

M. Bachmayer

J.J. Back

P. Baladron Rodriguez

V. Balagura

A. Balboni

W. Baldini

Z. Baldwin

L. Balzani

H. Bao

J. Baptista de Souza Leite

C. Barbero Pretel

M. Barbetti

I.R. Barbosa

R.J. Barlow

M. Barnyakov

S. Barsuk

W. Barter

J. Bartz

Poland

S. Bashir

B. Batsukh

P.B. Battista

A. Bay

A. Beck

M. Becker

F. Bedeschi

I.B. Bediaga

N.A. Behling

S. Belin

A. Bellavista

K. Belous

I. Belov

I. Belyaev

G. Benane

G. Bencivenni

E. Ben-Haim

A. Berezhnoy

R. Bernet

S. Bernet Andres

A. Bertolin

C. Betancourt

F. Betti

J. Bex

Ia. Bezshyiko

O. Bezshyyko

J. Bhom

M.S. Bieker

N.V. Biesuz

P. Billoir

A. Biolchini

M. Birch

F.C.R. Bishop

A. Bitadze

A. Bizzeti

Observation of <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><msubsup><mi>B</mi><mi>c</mi><mo>+</mo></msubsup><mo stretchy="false">→</mo><mi>D</mi><msup><mi>h</mi><mo>+</mo></msup><msup><mi>h</mi><mo>−</mo></msup></math> Decays

In this study, we explore various lab-frame angular observables at the Large Hadron-electron Collider (LHeC) to test their sensitivity to the most general structure of the Higgs (<math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mi>H</mi></math>) to neutral weak boson (<math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mi>Z</mi></math>) coupling (<math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mi>H</mi><mi>Z</mi><mi>Z</mi></math>) via the process <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><msup><mi>e</mi><mo>−</mo></msup><mi>p</mi><mo stretchy="false">→</mo><msup><mi>e</mi><mo>−</mo></msup><mi>H</mi><mi>j</mi></math> at the center of mass energy <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><msqrt><mi>s</mi></msqrt><mo>≈</mo><mn>1.3</mn><mtext> </mtext><mtext> </mtext><mi>TeV</mi></math>. The most general Lorentz structure of the <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mi>H</mi><mi>Z</mi><mi>Z</mi></math> coupling beyond the standard model is composed of two <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><mi>C</mi><mi>P</mi></mrow></math>-even (<math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><msub><mi>λ</mi><mrow><mn>1</mn><mi>Z</mi></mrow></msub></math> and <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><msub><mi>λ</mi><mrow><mn>2</mn><mi>Z</mi></mrow></msub></math>) and one <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><mi>C</mi><mi>P</mi></mrow></math>-odd (<math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><msub><mover accent="true"><mi>λ</mi><mo stretchy="false">˜</mo></mover><mi>Z</mi></msub></math>) component. In a previous study, we investigated the absolute value of azimuthal correlation (<math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mo stretchy="false">|</mo><mi mathvariant="normal">Δ</mi><mi>ϕ</mi><mo stretchy="false">|</mo></math>) between the final state electron and the jet to derive constraints on the nonstandard <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mi>H</mi><mi>Z</mi><mi>Z</mi></math> couplings. This choice of observable is motivated by its potential to discriminate between <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><mi>C</mi><mi>P</mi></mrow></math>-odd and <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><mi>C</mi><mi>P</mi></mrow></math>-even couplings in the <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><msup><mi>e</mi><mo>−</mo></msup><mi>p</mi><mo stretchy="false">→</mo><msub><mi>ν</mi><mi>e</mi></msub><mi>H</mi><mi>j</mi></math> process. Since the process <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><msup><mi>e</mi><mo>−</mo></msup><mi>p</mi><mo stretchy="false">→</mo><msup><mi>e</mi><mo>−</mo></msup><mi>H</mi><mi>j</mi></math> has an electron in the final state, one can construct more angular observables. In addition to <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mo stretchy="false">|</mo><mi mathvariant="normal">Δ</mi><mi>ϕ</mi><mo stretchy="false">|</mo></math>, we identify new angular observables: the sign-sensitive azimuthal correlation (<math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mi mathvariant="normal">Δ</mi><mi>ϕ</mi></math>) and the polar angle of the final state electron (<math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mi>θ</mi></math>), which are suitable for constraining nonstandard <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mi>H</mi><mi>Z</mi><mi>Z</mi></math> coupling. Our analysis shows that these new angles improve the constraints on <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><msub><mi>λ</mi><mrow><mn>2</mn><mi>Z</mi></mrow></msub></math> and <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><msub><mover accent="true"><mi>λ</mi><mo stretchy="false">˜</mo></mover><mi>Z</mi></msub></math> in the range of 48%–67%. We also study the potential of the asymmetry in <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mi mathvariant="normal">Δ</mi><mi>ϕ</mi></math> to constrain the parameters corresponding to the <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><mi>C</mi><mi>P</mi></mrow></math>-odd coupling.

Pramod Sharma

Ambresh Shivaji

Role of angular observables in probing nonstandard <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mi>H</mi><mi>Z</mi><mi>Z</mi></math> couplings at an electron-proton collider

Light <italic>s</italic>-shell hypernuclei ( <math altimg='si41.svg'><mrow><msubsup><mrow /><mstyle mathvariant='normal'><mi>&#923;</mi></mstyle><mrow><mn>3</mn><mo>,</mo><mn>4</mn></mrow></msubsup><mtext>H</mtext></mrow></math>) and their ground-state properties are crucial benchmarks in hypernuclear physics. In particular, comparing the production cross sections of <math altimg='si42.svg'><mrow><msubsup><mrow /><mstyle mathvariant='normal'><mi>&#923;</mi></mstyle><mn>3</mn></msubsup><mtext>H</mtext></mrow></math> and <math altimg='si43.svg'><mrow><msubsup><mrow /><mstyle mathvariant='normal'><mi>&#923;</mi></mstyle><mn>4</mn></msubsup><mtext>H</mtext></mrow></math> provides insights into the &#923; <italic>N</italic> interaction in different isospin configurations, which can help address recent discrepancies in the reported &#923; binding energy of hypertriton. We present the first measurement of the production cross sections for <math altimg='si42.svg'><mrow><msubsup><mrow /><mstyle mathvariant='normal'><mi>&#923;</mi></mstyle><mn>3</mn></msubsup><mtext>H</mtext></mrow></math> and <math altimg='si43.svg'><mrow><msubsup><mrow /><mstyle mathvariant='normal'><mi>&#923;</mi></mstyle><mn>4</mn></msubsup><mtext>H</mtext></mrow></math> using the in-flight <math altimg='si44.svg'><mrow><mo>(</mo><msup><mi>K</mi><mo>&#8722;</mo></msup><mo>,</mo><msup><mi>&#960;</mi><mn>0</mn></msup><mo>)</mo></mrow></math> reaction at a beam momentum of 1.0&#8239;GeV/ <italic>c</italic> with an identical experimental setup. The production cross sections in the laboratory frame, for the angular range from 0 &#8728; to 20 &#8728;, are measured to be <math altimg='si45.svg'><mrow><mn>15.0</mn><mspace width='0.33em' /><mo>&#177;</mo><mspace width='0.33em' /><mn>2.6</mn><mspace width='0.33em' /><mrow><mo>(</mo><mtext>stat.</mtext><mo>)</mo></mrow><msubsup><mspace width='0.33em' /><mrow><mo>&#8722;</mo><mn>2.8</mn></mrow><mrow><mo>+</mo><mn>2.4</mn></mrow></msubsup><mspace width='0.33em' /><mrow><mo>(</mo><mtext>syst.</mtext><mo>)</mo></mrow><mspace width='0.33em' /><mi>&#956;</mi><mtext>b</mtext></mrow></math> and <math altimg='si46.svg'><mrow><mn>49.9</mn><mspace width='0.33em' /><mo>&#177;</mo><mspace width='0.33em' /><mn>2.1</mn><mspace width='0.33em' /><mrow><mo>(</mo><mtext>stat.</mtext><mo>)</mo></mrow><msubsup><mspace width='0.33em' /><mrow><mo>&#8722;</mo><mn>8.0</mn></mrow><mrow><mo>+</mo><mn>7.8</mn></mrow></msubsup><mspace width='0.33em' /><mrow><mo>(</mo><mtext>syst.</mtext><mo>)</mo></mrow><mspace width='0.33em' /><mi>&#956;</mi><mtext>b</mtext></mrow></math> for the ground-state of <math altimg='si42.svg'><mrow><msubsup><mrow /><mstyle mathvariant='normal'><mi>&#923;</mi></mstyle><mn>3</mn></msubsup><mtext>H</mtext></mrow></math> and <math altimg='si43.svg'><mrow><msubsup><mrow /><mstyle mathvariant='normal'><mi>&#923;</mi></mstyle><mn>4</mn></msubsup><mtext>H</mtext></mrow></math>, respectively. Using the ratio of these cross sections and comparing it with theoretical calculations, we evaluate the &#923; binding energy of hypertriton, yielding a value consistent with the picture of a loosely bound system.

T. Akaishi

H. Asano

X. Chen

A. Clozza

C. Curceanu

Czechia

R. Del Grande

C.D. Han

T. Hashimoto

M. Iliescu

K. Inoue

S. Ishimoto

K. Itahashi

M. Iwasaki

Y. Ma

R. Murayama

H. Noumi

H. Ohnishi

S. Okada

H. Outa

K. Piscicchia

A. Sakaguchi

F. Sakuma

M. Sato

A. Scordo

K. Shirotori

Romania

D. Sirghi

F. Sirghi

S. Suzuki

K. Tanida

T. Toda

T. Yamaga

X. Yuan

P. Zhang

Y.P. Zhang

H. Zhang

Measurement of 3,4He( <math altimg='si40.svg'><mrow><msup><mi>K</mi><mo>&#8722;</mo></msup><mo>,</mo><msup><mi>&#960;</mi><mn>0</mn></msup><mrow><mo>)</mo></mrow><msubsup><mrow /><mstyle mathvariant='normal'><mi>&#923;</mi></mstyle><mrow><mn>3</mn><mo>,</mo><mn>4</mn></mrow></msubsup></mrow></math>H reaction cross section and evaluation of hypertriton &#923; binding energy