D. Kumar

Search for Pcs(4459) and Pcs(4338) in Upsilon(1S,2S) inclusive decays at Belle

I. Adachi, L. Aggarwal, H. Ahmed +402

Using data samples of 102 million Upsilon(1S) events and 158 million Upsilon(2S) events collected by the Belle detector at the KEKB asymmetric-energy $e^{+} e^{-}$ collider, we search f…

Determination of $∣ V_{c b} ∣$ using $B \to D ℓ I^½_{ℓ}$ Decays at Belle II

Belle II Collaboration, I. Adachi, K. Adamczyk +407

We present a determination of the Cabibbo-Kobayashi-Maskawa matrix element $∣ V_{c b} ∣$ from the decay $B \to D ℓ I^½_{ℓ}$ using a $365 fb^{- 1}$ $e^{+} e^{-} \to I^¥ (4 S) \to B B ˉ$ …

Search for $B^{0} \to K^{* 0} I ¨ ^{+} I ¨ ^{-}$ decays at the Belle II experiment

Belle II Collaboration, I. Adachi, K. Adamczyk +446

We present a search for the rare flavor-changing neutral-current decay $B^{0} \to K^{* 0} I ¨ ^{+} I ¨ ^{-}$ with data collected by the Belle II experiment at the SuperKEKB electron-posit…

Measurement of time-dependent $C P$ asymmetries in $B^{0} \to K_{S}^{0} I ¨ ^{+} I ¨ ^{-} I^^{3}$ decays at Belle and Belle II

Belle, Belle II Collaborations, : +350

We present a measurement of the time-dependent $C P$ asymmetry in $B^{0} \to K_{S}^{0} I ¨ ^{+} I ¨ ^{-} I^^{3}$ decays using a data set of 365 fb $^{- 1}$ recorded by the Belle II experim…

cond-mat.mtrl-sci2024

Phase transformation and water adsorption behavior of ALD deposited and annealed Ru and RuO2 films

S. S. Nalawade, R. S. Kim, J. Mahl +7

Ruthenium metal and its oxide stand out for their exceptional catalytic activity, stability in Oxygen Evolution Reactions (OER) and electrical conductivity, making them indispensab…

Searches for charged-lepton-flavor violation in $I ¨ _{b J} (1 P)$ decays

Belle, Belle II Collaborations, : +415

We report the first searches for charged-lepton-flavor violation in decays of $I ¨ _{b J} (1 P)$ ( $J = 0, 1,$ and $2$ ) to a pair of charged leptons using 158 million $I^¥ (2 S)$ decays colle…

Study of $B^{+} \to I^¼^{+} I^½_{I^} ¼$ decays at Belle and Belle II

Belle, Belle II Collaborations, : +412

We report a measurement of the branching fraction for the leptonic decay $B^{+} \to I^¼^{+} I^½_{I^} ¼$ . This work presents the first $B^{+} \to I^¼^{+} I^½_{I^} ¼$ result using Belle~II data, an updated Be…

physics.gen-ph2012

Heliosheath: Diffusion Entropy Analysis and Nonextensivity q-Triplet

A. Haubold, H. J. Haubold, D. Kumar

In this paper we investigate the scaling behavior, based on Diffusion Entropy Analysis and Standard Deviation Analysis, of the magnetic field strength fluctuations recorded by Voya…

Hindered $I^ K = 1$ Dipole Strength in octupole bands in $N = 90$ $^{154}$ Gd from Lifetime Measurements with $I^^{3} - I^^{3}$ fast timing technique

A. Pal, S. Basak, D. Kumar +7

The lifetimes of the low-lying negative-parity $1^{-}$ state at 1414~keV and $2^{-}$ state at 1398~keV in $^{154}$ Gd have been measured using the $I^^{3}$ -- $I^^{3}$ fast-timing technique with…

Search for $e^{+} e^{-} \to I^^{3} I ¨ _{b J}$ ( $J$ = 0, 1, 2) near $s = 10.746$ GeV at Belle II

Belle II Collaboration, M. Abumusabh, I. Adachi +399

We search for the $e^{+} e^{-} \to I^^{3} I ¨ _{b J}$ ( $J$ = 0, 1, 2) processes at center-of-mass energies $s$ = 10.653, 10.701, 10.746, and 10.804 GeV. These data were collected with t…

Study of $e^{+} e^{-} \to h^{+} h^{-} J / I ¨ (h = I ¨ , K, p)$ via initial-state radiation at Belle~II

Belle II Collaboration, M. Abumusabh, I. Adachi +417

Using a data sample of 427.9 fb $^{- 1}$ collected by the Belle~II detector at or near the $I^¥ (4 S)$ and $I^¥ (10753)$ resonances, the cross sections for $e^{+} e^{-} \to h^{+} h^{-} J / I ¨ $ $(h=Ï/K…

Search for lepton flavor-violating decay modes $B^{0} \to K^{* 0} I ¨ ^{\pm} ℓ^{\mp}$ ( $ℓ = e, I^¼$ ) with hadronic B-tagging at Belle and Belle II

Belle, Belle II Collaborations, : +375

We present the results of a search for the charged-lepton-flavor violating decays $B^{0} \to K^{* 0} I ¨ ^{\pm} ℓ^{\mp}$ , where $ℓ^{\mp}$ is either an electron or a muon. The…

cond-mat.mtrl-sci2018

Insightful classification of crystal structures using deep learning

A. Ziletti, D. Kumar, M. Scheffler +1

Computational methods that automatically extract knowledge from data are critical for enabling data-driven materials science. A reliable identification of lattice symmetry is a cru…

Search for axion-like particles decaying to two photons at Belle II

Belle II Collaboration, M. Abumusabh, I. Adachi +450

Axion-like particles (ALPs) are predicted in many extensions of the Standard Model and provide a well-motivated portal between visible and hidden sectors through their coupling to…

Production cross sections of light and charmed mesons in $e^{+} e^{-}$ annihilation near 10.58 GeV

Belle Collaboration, R. Seidl, I. Adachi +131

We report measurements of production cross sections for $I ¨ ^{+}$ , $I ¨ ^{0}$ , $I ¨ $ , $K^{*+}$ , $K^{* 0}$ , $I ¨ $ , $I^\cdot$ , $K_{S}^{0}$ , $f_{0} (980)$ , $D^{+}$ , $D^{0}$ , $D_{s}^{+}$ , $D^{*+}$ , $D^{* 0}$ , and $D…

physics.app-ph2024

Nanoporosity imaging by positronium lifetime tomography

K. Dulski, E. Beyene, N. Chug +25

Positron Annihilation Lifetime Spectroscopy (PALS) is a well-established non-destructive technique used for nanostructural characterization of porous materials. It is based on the…

cond-mat.mes-hall2013

Intrinsic and extrinsic mirror symmetry breaking in anti-dot spin-wave waveguides

J. W. KÅos, D. Kumar, M. Krawczyk +1

We theoretically study the spin-wave spectra in magnonic waveguides periodically patterned with square anti-dots in nanoscale with pinned magnetization at the edges. We show that t…

Measurement of inclusive $B \to X_{u} ℓ I^½$ partial branching fractions and $∣ V_{u b} ∣$ at Belle II

Belle II Collaboration, M. Abumusabh, I. Adachi +419

A sample of 365 fb $^{- 1}$ of $e^{+} e^{-} \to I^¥ (4 S) \to B B ˉ$ data collected by the Belle II experiment is used to measure the partial branching fractions of charmless semileptonic…

astro-ph.IM2010

Interferometric imaging with the 32 element Murchison Wide-field Array

S. M. Ord, D. A. Mitchell, R. B. Wayth +56

The Murchison Wide-field Array (MWA) is a low frequency radio telescope, currently under construction, intended to search for the spectral signature of the epoch of re-ionisation (…

Measurement of $B \to K^{*} (892) I^^{3}$ decays at Belle II

Belle II Collaboration, I. Adachi, L. Aggarwal +451

We present measurements of $B \to K^{*} (892) I^^{3}$ decays using $365 fb^{- 1}$ of data collected from 2019 to 2022 by the Belle~II experiment at the SuperKEKB asymmetric-energ…

astro-ph2007

Extension of thermonuclear functions through the pathway model including Maxwell-Boltzmann and Tsallis distributions

H. J. Haubold, D. Kumar

The Maxwell-Boltzmannian approach to nuclear reaction rate theory is extended to cover Tsallis statistics (Tsallis, 1988) and more general cases of distribution functions. An analy…

physics.med-ph2024

TOF MLEM Adaptation for the Total-Body J-PET with a Realistic Analytical System Response Matrix

R. Y. Shopa, J. Baran, K. Klimaszewski +32

We report a study of the original image reconstruction algorithm based on the time-of-flight maximum likelihood expectation maximisation (TOF MLEM), developed for the total-body (T…

Measurement of the $C P$ asymmetry in $D^{0} \to I ¨ ^{+} I ¨ ^{-} I ¨ ^{0}$ decays at Belle II

Belle II Collaboration, M. Abumusabh, I. Adachi +400

We measure the time- and phase-space-integrated $C P$ asymmetry $A_{C P}$ in $D^{0} \to I ¨ ^{+} I ¨ ^{-} I ¨ ^{0}$ decays reconstructed in $e^{+} e^{-} \to c c ˉ$ events collected by the Belle II experim…

astro-ph.HE2013

Role of rotation and polar cap current on pulsar radio emission and polarization

D. Kumar, R. T. Gangadhara

The perturbations such as rotation and PC--current have been believed to be greatly affecting the pulsar radio emission and polarization. The two effects have not been considered s…

physics.ins-det2023

J-PET detection modules based on plastic scintillators for performing studies with positron and positronium beams

S. Sharma, J. Baran, R. S. Brusa +33

The J-PET detector, which consists of inexpensive plastic scintillators, has demonstrated its potential in the study of fundamental physics. In recent years, a prototype with 192 p…

Measurement of $B^{+} \to I ¨ ^{+} I^½_{I ¨} $ branching fraction with a hadronic tagging method at Belle II

Belle II Collaboration, I. Adachi, K. Adamczyk +341

We present a measurement of the branching fraction of $B^{+} \to I ¨ ^{+} I^½_{I ¨} $ decays using $(387 \pm 6) \times 1 0^{6}$ $I^¥ (4 S)$ collected between 2019 and 2022 with the Belle II detector at t…

hep-ex2023

Search for the semileptonic decays $I^_{c}^{0} \to I^^{0} ℓ^{+} ℓ^{-}$ at Belle

Belle Collaboration, J. X. Cui, Y. B. Li +163

Using the full data sample of 980 $fb^{- 1}$ collected with the Belle detector at the KEKB asymmetric energy electron-positron collider, we report the results of the first…

Search for the lepton-flavor-violating $I ¨ ^{-} \to e^{\mp} ℓ^{\pm} ℓ^{\mp}$ decays at Belle II

Belle II Collaboration, I. Adachi, L. Aggarwal +447

We present the result of a search for the charged-lepton-flavor violating decays $I ¨ ^{-} \to e^{\mp} ℓ^{\pm} ℓ^{-}$ , where $ℓ$ is a muon or an electron, using a data sampl…

physics.ins-det2024

Comparative studies of plastic scintillator strips with high technical attenuation length for the total-body J-PET scanner

L. Kaplon, J. Baran, N. Chug +31

Plastic scintillator strips are considered as one of the promising solutions for the cost-effective construction of total-body positron emission tomography, (PET) system. The purpo…

physics.plasm-ph2015

Fast magnetic field annihilation in the relativistic collisionless regime driven by two ultra-short high-intensity laser pulses

Y. J. Gu, O. Klimo, D. Kumar +6

The magnetic quadrupole structure formation during the interaction of two ultra-short high power laser pulses with a collisionless plasma is demonstrated with 2.5-dimensional parti…

astro-ph.SR2011

Analytical results connecting stellar structure parameters and extended reaction rates

H. J. Haubold, D. Kumar

Possible modification in the velocity distribution in the non-resonant reaction rates leads to an extended reaction rate probability integral. The closed form representation for th…

Isomeric states of fission fragments explored via Penning trap mass spectrometry at IGISOL

A. Jaries, M. Stryjczyk, A. Kankainen +36

The masses of $^{84}$ Br, $^{105}$ Mo, $^{115, 119, 121}$ Pd, $^{122}$ Ag, $^{127, 129}$ In, $^{132}$ Sb and their respective isomeric states have been measured with the JYFLTRAP Penning tr…

cond-mat.mes-hall2013

Magnonic Band Structure, Complete Bandgap and Collective Spin Wave Excitation in Nanoscale Two--Dimensional Magnonic Crystals

D. Kumar, J. W. KÅos, M. Krawczyk +1

We present the observation of a complete bandgap and collective spin wave excitation in two-dimensional magnonic crystals comprised of arrays of nanoscale antidots and nanodots, re…

A search for feebly-interacting particles in $B$ decays with missing energy at Belle

Belle, Belle II Collaborations, : +406

We present a search for an invisible hidden-sector particle $X_{inv}$ , produced in $B^{0} \to D ˉ^{0} X_{inv}$ and $B^{\pm} \to h X_{inv}$ decays, where $h = I ¨ ^{\pm}$ ,…

Non-maximal entanglement of photons from positron-electron annihilation demonstrated using a novel plastic PET scanner

P. Moskal, D. Kumar, S. Sharma +25

In state-of-the-art Positron Emission Tomography (PET), information about annihilation photon polarization is unavailable. Here, we present a PET scanner built from plastic scintil…

physics.plasm-ph2010

Fusion yield: Guderley model and Tsallis statistics

H. J. Haubold, D. Kumar

The reaction rate probability integral is extended from Maxwell-Boltzmann approach to a more general approach by using the pathway model introduced by Mathai [Mathai A.M.:2005, A p…

cond-mat.stat-mech2011

On extended thermonuclear functions through pathway model

D. Kumar, H. J. Haubold

The major problem in the cosmological nucleosynthesis is the evaluation of the reaction rate. The present scenario is that the standard thermonuclear function in the Maxwell-Boltzm…

Observation of time-dependent $C P$ violation and measurement of the branching fraction of $B^{0} \to J / I ¨ I ¨ ^{0}$ decays

Belle II Collaboration, I. Adachi, L. Aggarwal +391

We present a measurement of the branching fraction and time-dependent charge-parity ( $C P$ ) decay-rate asymmetries in $B^{0} \to J / I ¨ I ¨ ^{0}$ decays. The data sample was collected with t…

Improved measurement of Born cross sections for $I ¨ _{b J} I ¨ $ and $I ¨ _{b J} (I ¨ ^{+} I ¨ ^{-} I ¨ ^{0})_{non - I ¨ }$ ( $J$ = 0, 1, 2) at Belle and Belle II

Belle, Belle II Collaborations, : +424

We study the processes $I ¨ _{b J} I ¨ $ and $I ¨ _{b J} (I ¨ ^{+} I ¨ ^{-} I ¨ ^{0})_{non - I ¨ }$ ( $J$ = 0, 1, 2) at center-of-mass energies $s$ from 10.73 to 11.02 GeV using a $142.5\,\mathr…

Test of lepton flavor universality with measurements of $R (D^{+})$ and $R (D^{*+})$ using semileptonic $B$ tagging at the Belle II experiment

Belle II Collaboration, I. Adachi, K. Adamczyk +450

We report measurements of the ratios of branching fractions ${\cal R}(D^{(*)+}) = \frac{{\cal B}(\overline{B}{}^0 \to D^{(*)+} \,Ï^- \, \overlineÎ½_Ï)}{{\cal B}(\overline{B}{}^0…

cond-mat.mes-hall2013

Effect of Hole Shape on Spin-Wave Band Structure in One-Dimensional Magnonic Antidot Waveguide

D. Kumar, P. Sabareesan, W. Wang +2

We present the possibility of tuning the spin-wave band structure, particularly the bandgaps in a nanoscale magnonic antidot waveguide by varying the shape of the antidots. The eff…

astro-ph.SR2011

Analytic representations of standard and extended non-resonant thermonuclear functions with depleted tail through the pathway model

D. Kumar, H. J. Haubold

The method for the evaluation of the non-resonant thermonuclear function in the Maxwell-Boltzmann case with depleted tail is discussed. Closed forms of the analytical results are o…

cs.ET2013

Resistive Threshold Logic

A. P. James, L. R. V. J. Francis, D. Kumar

We report a resistance based threshold logic family useful for mimicking brain like large variable logic functions in VLSI. A universal Boolean logic cell based on an analog resist…

nucl-ex2023

High-precision measurements of low-lying isomeric states in $^{120 - 124}$ In with JYFLTRAP double Penning trap

D. A. Nesterenko, J. Ruotsalainen, M. Stryjczyk +26

Neutron-rich $^{120 - 124}$ In isotopes have been studied utilizing the double Penning trap mass spectrometer JYFLTRAP at the IGISOL facility. Using the phase-imaging ion-cyclotron-re…

Measurement of the Branching Fraction of $I^_{c}^{+} \to p K_{S}^{0} I ¨ ^{0}$ at Belle

The Belle, Belle II Collaborations, : +426

We report a precise measurement of the ratio of branching fractions $B (I^_{c}^{+} \to p K_{S}^{0} I ¨ ^{0}) / B (I^_{c}^{+} \to p K^{-} I ¨ ^{+})$ using 980 fb $^{- 1}$ of $e^{+} e^{-}$ data fro…

Lifetimes and Transition Probabilities in $N = 7 6^{130} X e$

D. Kumar, S. Basak, A. Pal +4

Lifetimes for the $4_{1}^{+}$ and $6_{1}^{+}$ states have been directly measured using $I^^{3} - I^^{3}$ fast timing technique for low lying states of $^{130} X e$ , populated from $Î²^-$ decay of…

cond-mat.mtrl-sci2016

Metallization and APPJ treatment of Bismaleimide

A. S. Bhattacharyya, S. Kumar, A. Sharma +5

Bismaleimide (BMI) resins are a new breed of thermosetting resins used mainly for high temperature applications and have major usage in aerospace. FTIR studies have shown the signa…

First search for $B \to X_{s} I^½ I^ˉ ½$ decays

Belle II Collaboration, M. Abumusabh, I. Adachi +440

We report the first search for the flavor-changing neutral-current decays $B \to X_{s} I^½ I^ˉ ½$ , where $X_{s}$ is a hadronic system with strangeness equal to 1, in data co…

Observation of $e^{+} e^{-} \to I^\cdot I^¥ (2 S)$ and search for $e^{+} e^{-} \to I^\cdot I^¥ (1 S), I^^{3} X_{b}$ at $s$ near 10.75 GeV

Belle II Collaboration, I. Adachi, L. Aggarwal +435

We present an analysis of the processes $e^{+} e^{-} \to I^\cdot I^¥ (1 S)$ , $I^\cdot I^¥ (2 S)$ , and $I^^{3} X_{b}$ with $X_{b} \to I ¨ ^{+} I ¨ ^{-} I ¨ _{b J}, I ¨ _{b J} \to I^^{3} I^¥ (1 S)$ $(J = 1, 2)$ reconstructed from $Î³Î³Ï^+Ï^…

First measurement of the masses of the $I^¥_{1} (1 D)$ and $I^¥_{3} (1 D)$ states and the energy dependence of the cross sections for $e^{+} e^{-} \to I^¥_{J} (1 D) I^\cdot$ and $e^{+} e^{-} \to I^¥_{J} (1 D) I ¨ ^{+} I ¨ ^{-}$

Belle, Belle II Collaborations, : +398

We study the processes $e^{+} e^{-} \to I^¥_{J} (1 D) I^\cdot$ and $e^{+} e^{-} \to I^¥_{J} (1 D) I ¨ ^{+} I ¨ ^{-}$ at center-of-mass energies $s$ =(10.73 -- 11.02) GeV using a $142.5 fb^{- 1}$ data sampl…

Search for the decay $B^{+} \to K^{+} τ^{+} τ^{-}$ using data from the Belle and Belle II experiments

Belle, Belle II Collaborations, : +446

We report a search for the rare decay $B^{+} \to K^{+} τ^{+} τ^{-}$ using $1.2 \times 1 0^{9}$ $Υ (4 S)$ mesons produced near threshold in electron-positron collisions and colle…

Search for an Axion-Like Particle in $B \to K^{(*)} a (\to I^^{3} I^^{3})$ Decays at Belle

Belle, Belle II Collaborations, : +422

We report a search for an axion-like particle $a$ in $B \to K^{(*)} a (\to I^^{3} I^^{3})$ decays using data collected with the Belle detector at the KEKB asymmetric energy el…

astro-ph.IM2026

KDP as a thermal blocking filter -- Deep near IR observations with a warm narrow band filter

J. K. M. Viuho, A. A. Djupvik, A. N. SÃ¸rensen +5

Ground-based astronomy suffers from strong atmospheric line- and thermal continuum emission, at the near infrared (NIR, 0.7-1.1 $I^¼$ m), and short-wave infrared (SWIR, 1.1-2.5 $I^¼$ m)…

Search for a heavy neutral lepton that mixes predominantly with the tau neutrino

Belle Collaboration, M. Nayak, S. Dey +165

We report a search for a heavy neutral lepton (HNL) that mixes predominantly with $I^½_{I ¨} $ . The search utilizes data collected with the Belle detector at the KEKB asymmetric energy…

Evidence of the Excited X(5)-like Critical-Point Symmetry Structures in 152Sm

S. Basak, S. Rajbanshi, T. Bhattacharjee +23

The positive-parity structure of 152Sm has been investigated through high-statistics Î³-ray spectroscopy following the (150Nd(Î±,2n)152Sm reaction at Elab = 26 MeV. Several collect…

math.AP2023

HÃ¶lder regularity results for parabolic nonlocal double phase problems

J. Giacomoni, D. Kumar, K. Sreenadh

In this article, we obtain higher HÃ¶lder regularity results for weak solutions to nonlocal problems driven by the fractional double phase operator \begin{align*} \mc L u(x):=&2 \;…

Search for lepton flavor-violating decay modes $B^{0} \to K_{S}^{0} I ¨ ^{\pm} ℓ^{\mp} (ℓ = I^¼, e)$ with hadronic $B$ -tagging at Belle and Belle II

Belle, Belle II Collaborations, : +425

We present the first search for the lepton flavor-violating decay modes $B^{0} \to K_{S}^{0} I ¨ ^{\pm} ℓ^{\mp} (ℓ = I^¼, e)$ using the 711 fb $^{- 1}$ and 365 fb $^{- 1}$ data samples…

Measurements of the mass difference $m (B^{0}) - m (B^{+})$ and the energy dependence of the cross-section ratio $I ¨ (e^{+} e^{-} \to B^{0} B ˉ^{0}) / I ¨ (e^{+} e^{-} \to B^{+} B^{-})$ at Belle and Belle II

Belle, Belle II Collaborations, : +396

Using data samples collected by the Belle and Belle II experiments at the $I^¥ (4 S)$ resonance with integrated luminosities of 571 fb $^{- 1}$ and 365 fb $^{- 1}$ , respectively, we measu…

Observation of the radiative decay $D_{s} (2317)^{+} \to D_{s}^{*} I^^{3}$

Belle II Collaboration, M. Abumusabh, I. Adachi +367

We observe the radiative decay $D_{s 0}^{*} (2317)^{+} \to D_{s}^{*+} I^^{3}$ for the first time, with a significance exceeding $10$ standard deviations. The signal is found in the conti…

astro-ph.HE2012

Influence of the polar cap current on pulsar polarization

D. Kumar, R. T. Gangadhara

We have developed a model for the polarization of curvature radiation by taking into account the polar-cap-current induced perturbation on the dipolar magnetic field. We present th…

physics.gen-ph2012

Solar neutrino records: Gauss or non-Gauss is the question

A. Haubold, H. J. Haubold, D. Kumar

This article discusses the possible variation of the solar neutrino flux over time in the records of Super-Kamiokande-I and the relation to non-equilibrium statistical mechanics an…

math.FA2022

Approximation by Quantum Meyer KÃ¶nig and Zeller-Fractal Functions

D. Kumar, A. K. B. Chand, P. R. Massopust

In this paper, a novel class of quantum fractal functions is introduced based on the Meyer-KÃ¶nig-Zeller operator $M_{q, n}$ . These quantum Meyer-KÃ¶nig-Zeller (MKZ) fractal functio…

nucl-ex2024

First investigation on the isomeric ratio in multinucleon transfer reactions: Entrance channel effects on the spin distribution

D. Kumar, T. Dickel, A. Zadvornaya +39

The multinucleon transfer (MNT) reaction approach was successfully employed for the first time to measure the isomeric ratios (IRs) of $^{211}$ Po (25/2 $^{+}$ ) isomer and its (9/2 $^{+}$ …

Measurement of the $D^{0} \to K^{-} I ¨ ^{+} e^{+} e^{-}$ branching fraction and search for $D^{0} \to I ¨ ^{+} I ¨ ^{-} e^{+} e^{-}$ and $D^{0} \to K^{+} K^{-} e^{+} e^{-}$ decays at Belle

Belle, Belle II Collaborations, : +481

We present a study of the rare charm meson decays $D^{0} \to K^{+} K^{-} e^{+} e^{-}$ , $I ¨ ^{+} I ¨ ^{-} e^{+} e^{-}$ , and $K^{-} I ¨ ^{+} e^{+} e^{-}$ using a 942 fb $^{- 1}$ data se…

physics.med-ph2024

Investigation of Novel Preclinical Total Body PET Designed With J-PET Technology:A Simulation Study

M. Dadgar, S. Parzych, F. Tayefi Ardebili +29

The growing interest in human-grade total body positron emission tomography (PET) systems has also application in small animal research. Due to the existing limitations in human-ba…

Search for the decay $B_{s}^{0} \to J / I ¨ I ¨ ^{0}$ at Belle experiment

Belle Collaboration, D. Kumar, B. Bhuyan +164

We have analyzed 121.4 fb $^{- 1}$ of data collected at the $I^¥ (5 S)$ resonance by the Belle experiment using the KEKB asymmetric-energy $e^{+} e^{-}$ collider to search for the decay $B_s…

cond-mat.mtrl-sci2004

High Curie temperatures in ferromagnetic Cr-doped AlN thin films

D. Kumar, J. Antifakos, M. G. Blamire +1

Al1-xCrxN thin films with $0.02 \leq x \leq 0.1$ were deposited by reactive co-sputtering onto c-plane (001) sapphire. Room-temperature ferromagnetism with a coercive field of 85 Oe w…

High-precision mass measurements of the ground and isomeric states in $^{124, 125}$ Ag

J. Ruotsalainen, D. A. Nesterenko, M. Stryjczyk +26

The masses of the ground and isomeric states in $^{124, 125}$ Ag have been measured using the phase-imaging ion-cyclotron-resonance technique at the JYFLTRAP double Penning trap mass…

A New Evidence of Interplay Between Tetrahedral and Octahedral Symmetries and Symmetry Breaking: Exotic Rotational Bands in $^{152}$ Sm

S. Basak, D. Kumar, T. Bhattacharjee +30

We report on an experimental evidence for a new, second tetrahedral band in $_{62}^{152}$ Sm $_{90}$ . It was populated via fusion evaporation reaction, $^{150}{\rm Nd}(Î±, 2n)…

Low lying excitations in $^{150}$ Pm

A. Pal, S. Basak, T. Bhattacharjee +19

The low lying excitations in odd-odd $^{150}$ Pm have been studied through proton induced reaction with an array of five Compton suppressed Clover HPGe and one segmented planar Ge d…

Search for lepton-flavor-violating $I ¨ ^{-} \to ℓ^{-} K_{s}^{0}$ decays at Belle and Belle II

Belle, Belle II Collaborations, : +419

We present the results of a search for charged-lepton-flavor violating decays $I ¨ ^{-} \to ℓ^{-} K_{S}^{0}$ , where $ℓ^{-}$ is either an electron or a muon. We combine $…

physics.plasm-ph2024

Demonstration of The Brightest Nano-size Gamma Source

A. S. Pirozhkov, A. Sagisaka, K. Ogura +46

Gamma rays selectively interact with nuclei, induce and mediate nuclear reactions and elementary particle interactions, and exceed x-rays in penetrating power and thus are indispen…

Measurement of the branching fraction and $CP$ -violating asymmetry of the decay $B^{0} \to I ¨ ^{0} I ¨ ^{0}$ using $387$ million bottom-antibottom meson pairs in Belle II data

Belle II Collaboration, I. Adachi, L. Aggarwal +437

We measure the branching fraction and $CP$ -violating flavor-dependent rate asymmetry of $B^{0} \to I ¨ ^{0} I ¨ ^{0}$ decays reconstructed using the Belle II detector in an electro…

physics.ins-det2023

Feasibility studies for imaging e $^{+}$ e $^{-}$ annihilation with modular multi-strip detectors

S. Sharma, L. Povolo, S. Mariazzi +41

Studies based on imaging the annihilation of the electron (e $^{-}$ ) and its antiparticle positron (e $^{+}$ ) open up several interesting applications in nuclear medicine and fundame…

math.AP2022

A note on the global regularity results for strongly nonhomogeneous $p, q$ -fractional problems and applications

J. Giacomoni, D. Kumar, K. Sreenadh

In this article, we communicate with the glimpse of the proofs of global regularity results for weak solutions to a class of problems involving fractional $(p, q)$ -Laplacian, denote…

astro-ph.HE2011

Relativistic model on pulsar radio emission and polarization

D. Kumar, R. T. Gangadhara

We have developed a relativistic model for pulsar radio emission and polarization by taking into account of detailed geometry of emission region, rotation and modulation. The spark…

Studies of CPT symmetry in positronium decays with 192 plastic strip J-PET detector

N. Chug, S. D. Bass, E. Y. Beyene +40

A direct test of the CPT symmetry is performed for the electromagnetic decays of ortho-positronium using the J-PET tomograph. We present the precise measurement of the CPT-sensitiv…

Search for a Dark Higgs Boson Produced in Association with Inelastic Dark Matter at the Belle II Experiment

Belle II Collaboration, I. Adachi, L. Aggarwal +437

Inelastic dark matter models that have two dark matter particles and a massive dark photon can reproduce the observed relic dark matter density without violating cosmological limit…

cond-mat.mtrl-sci2023

Interplay of topology and antiferromagnetic order in two-dimensional van der Waals crystals of (NixFe1-x)2P2S6

N. Khan, D. Kumar, V. Kumar +6

Mermin-Wagner theorem forbid spontaneous symmetry breaking of spins in one/two-dimensional systems at finite temperature and rules out the stabilization of this ordered state. Howe…

Measurement of the inclusive branching fractions for $B_{s}^{0}$ decays into $D$ mesons via hadronic tagging

Belle, Belle II Collaborations, : +452

We report measurements of the absolute branching fractions $B (B_{s}^{0} \to D_{s}^{\pm} X)$ , $B (B_{s}^{0} \to D^{0} / D ˉ^{0} X)$ , and $B (B_{s}^{0} \to D^{\pm} X)$ , w…

cond-mat.mtrl-sci2020

Engineering the magnetic and magnetocaloric properties of PrVO3 epitaxial oxide thin films by strain effects

H. Bouhani, A. Endichi, D. Kumar +10

Combining multiple degrees of freedom in strongly-correlated materials such as transition-metal oxides would lead to fascinating magnetic and magnetocaloric features. Herein, the s…

math.DS2015

On escaping sets of some families of entire functions and dynamics of composite entire functions

D. Kumar

We consider two families of functions $\mathcal{F}=\{f_{{\la},Î¾}(z)= e^{-z+\la}+Î¾: \la,\,Î¾\in\C, \RE{\la}<0, \REÎ¾\geq 1\}$ and $\mathcal{F}'=\{f_{Î¼,{\ze}}(z)= e^{z+Î¼}+\ze: Î¼…

nucl-ex2024

High-precision Penning-trap mass measurements of Cd and In isotopes at JYFLTRAP remove the fluctuations in the two-neutron separation energies

A. Jaries, M. Stryjczyk, A. Kankainen +23

We report on the first direct mass measurements of the $^{118, 119}$ Cd and $^{117 - 119}$ In isotopes performed at the Ion Guide Isotope Separator On-Line facility using the JYFLTRAP d…

cond-mat.str-el2013

Î´-doped LaAlO3-SrTiO3 interface: Electrical transport and characterization of the interface potential

A. Rastogi, S. Tiwari, J. J. Pulikkotil +3

Here we investigate LaAlO_3-SrTiO_3 heterostructure withÎ´-doping of the interface by LaMnO_3 at less than one monolayer. This doping strongly inhibits the formation of mobile elec…

math.AP2023

Global gradient estimates for the mixed local and nonlocal problems with measurable nonlinearities

S. -S. Byun, D. Kumar, H. -S. Lee

A non-homogeneous mixed local and nonlocal problem in divergence form is investigated for the validity of the global CalderÃ³n-Zygmund estimate for the weak solution to the Dirichl…