L. Kumar

activity

20242026

collaborators

6 papers

nucl-ex2026

Evidence of Spin-Interference Effects in Exclusive $J / I ¨ \to e^{+} e^{-}$ Photoproduction in Ultraperipheral Heavy-Ion Collisions

The STAR Collaboration

We report the first evidence of spin interference in exclusive $J / I ¨ \to e^{+} e^{-}$ photoproduction in ultraperipheral heavy-ion collisions at STAR at $s_{N N} = 200$ ~GeV. In Au+…

nucl-ex2026

Dielectron production in proton-proton and proton-lead collisions at $s_{NN}$ = 5.02 TeV

ALICE Collaboration

The first measurements of dielectron production at midrapidity ( $∣ I^\cdot_{e} ∣ < 0.8$ ) in proton-proton and proton-lead collisions at $s_{NN}$ = 5.02 TeV at the LHC are pr…

nucl-ex2025

Measurement of the cross sections of $I^_{c}^{0}$ and $I^_{c}^{+}$ baryons and branching-fraction ratio BR( $I^_{c}^{0} \to I^^{-} e^{+} I^½_{e}$ )/BR( $I^_{c}^{0} \to I^^{-} I ¨ ^{+}$ ) in pp collisions at 13 TeV

ALICE Collaboration

The $p_{T}$ -differential cross sections of prompt charm-strange baryons $I^_{c}^{0}$ and $I^_{c}^{+}$ were measured at midrapidity ( $∣ y ∣ < 0.5$ ) in proton-proton (pp) colli…

nucl-ex2025

First polarisation measurement of coherently photoproduced J/ $I ¨ $ in ultra-peripheral Pb $-$ Pb collisions at $s_{NN}$ = 5.02 TeV

ALICE Collaboration

The first measurement of the polarisation of coherently photoproduced J $/ I ¨ $ mesons in ultra-peripheral Pb-Pb collisions, using data at $s_{NN}$ = 5.02 TeV, is presented…

nucl-ex2025

Multiplicity dependence of $I^¥$ production at forward rapidity in pp collisions at $s$ = 13 TeV

ALICE Collaboration

The measurement of $I^¥$ (1S), $I^¥$ (2S), and $I^¥$ (3S) yields as a function of the charged-particle multiplicity density, $d N_{ch} / d I^\cdot$ , using the ALICE exp…

hep-ex2024

Multiplicity dependence of charged-particle intra-jet properties in pp collisions at $s$ = 13 TeV

ALICE Collaboration

The first measurement of the multiplicity dependence of intra-jet properties of leading charged-particle jets in proton-proton (pp) collisions is reported. The mean charged-particl…

Evidence of Spin-Interference Effects in Exclusive J/I¨→e+e− Photoproduction in Ultraperipheral Heavy-Ion Collisions

Dielectron production in proton-proton and proton-lead collisions at sNN​​ = 5.02 TeV

Measurement of the cross sections of I^c0​ and I^c+​ baryons and branching-fraction ratio BR(I^c0​→I^−e+I^½e​)/BR(I^c0​→I^−I¨+) in pp collisions at 13 TeV

First polarisation measurement of coherently photoproduced J/I¨ in ultra-peripheral Pb−Pb collisions at sNN​​ = 5.02 TeV

Multiplicity dependence of I^¥ production at forward rapidity in pp collisions at s​ = 13 TeV

Multiplicity dependence of charged-particle intra-jet properties in pp collisions at s​ = 13 TeV

Evidence of Spin-Interference Effects in Exclusive $J / I ¨ \to e^{+} e^{-}$ Photoproduction in Ultraperipheral Heavy-Ion Collisions

Dielectron production in proton-proton and proton-lead collisions at $s_{NN}$ = 5.02 TeV

Measurement of the cross sections of $I^_{c}^{0}$ and $I^_{c}^{+}$ baryons and branching-fraction ratio BR( $I^_{c}^{0} \to I^^{-} e^{+} I^½_{e}$ )/BR( $I^_{c}^{0} \to I^^{-} I ¨ ^{+}$ ) in pp collisions at 13 TeV

First polarisation measurement of coherently photoproduced J/ $I ¨ $ in ultra-peripheral Pb $-$ Pb collisions at $s_{NN}$ = 5.02 TeV

Multiplicity dependence of $I^¥$ production at forward rapidity in pp collisions at $s$ = 13 TeV

Multiplicity dependence of charged-particle intra-jet properties in pp collisions at $s$ = 13 TeV