P. Koppenburg

collaborators

18 papers

hep-ex2026

Measurement of the ratio of branching fractions $B (B_{c}^{+} \to J / I ¨ I ¨ ^{+} I^½_{I ¨} ) / B (B_{c}^{+} \to J / I ¨ I^¼^{+} I^½_{I^} ¼)$

LHCb collaboration, R. Aaij, M. Abdelfatah +1121

A measurement of the ratio of semileptonic branching fractions $R (J I ¨ )$ , defined as $\mathcal{R}(J/Ï) \equiv \mathcal{B}(B_c^+ \to J/ÏÏ^+ Î½_Ï)/\mathcal{B}(B_c^+ \to…

hep-ex2025

A Linear Collider Vision for the Future of Particle Physics

H. Abramowicz, E. Adli, F. Alharthi +446

In this paper we review the physics opportunities at linear $e^{+} e^{-}$ colliders with a special focus on high centre-of-mass energies and beam polarisation, take a fresh look at the…

hep-ex2025

Observation of exotic $J / I ¨ I ¨ $ resonant structure in diffractive processes in proton-proton collisions

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1072

The first study of $J / I ¨ I ¨ $ production in diffractive processes in proton-proton collisions is presented. The study is based on an LHCb dataset recorded at centre-of-mass energy of…

hep-ex2025

First observation of the $I^_{b}^{0} \to D^{+} D^{-} I^$ decay

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1072

The $I^_{b}^{0} \to D^{+} D^{-} I^$ decay is observed for the first time using proton-proton collision data collected by the LHCb experiment at a center-of-mass energy of $13 TeV$ …

hep-ex2025

The Linear Collider Facility (LCF) at CERN

H. Abramowicz, E. Adli, F. Alharthi +406

In this paper we outline a proposal for a Linear Collider Facility as the next flagship project for CERN. It offers the opportunity for a timely, cost-effective and staged construc…

hep-ex2025

Measurement of the $I^_{c}^{+}$ to $D^{0}$ production cross-section ratio in peripheral PbPb collisions

LHCb collaboration

We report on a measurement of the $I^_{c}^{+}$ to $D^{0}$ production ratio in PbPb collisions at $s_{NN}$ = 5.02 TeV with the LHCb detector in the forward rapidity region $2 <y…

Measurement of the ratio of branching fractions B(Bc+​→J/I¨I¨+I^½I¨​)/B(Bc+​→J/I¨I^¼+I^½I^​¼)

A Linear Collider Vision for the Future of Particle Physics

Observation of exotic J/I¨I¨ resonant structure in diffractive processes in proton-proton collisions

First observation of the I^b0​→D+D−I^ decay

The Linear Collider Facility (LCF) at CERN

Measurement of the I^c+​ to D0 production cross-section ratio in peripheral PbPb collisions

Measurement of the ratio of branching fractions $B (B_{c}^{+} \to J / I ¨ I ¨ ^{+} I^½_{I ¨} ) / B (B_{c}^{+} \to J / I ¨ I^¼^{+} I^½_{I^} ¼)$

Observation of exotic $J / I ¨ I ¨ $ resonant structure in diffractive processes in proton-proton collisions

First observation of the $I^_{b}^{0} \to D^{+} D^{-} I^$ decay

Measurement of the $I^_{c}^{+}$ to $D^{0}$ production cross-section ratio in peripheral PbPb collisions