Sökresultat

Filtyp

Din sökning på "2024" gav 24056 sökträffar

Probing the nature of the χc1(3872) state using radiative decays

Abstract: The radiative decays χc1(3872) → ψ(2S) γ and χc1(3872) → J/ψγ are used to probe the nature of the χc1(3872) state using proton-proton collision data collected with the LHCb detector, corresponding to an integrated luminosity of 9 fb−1. Using the B+ → χc1(3872)K+ decay, the χc1(3872) → ψ(2S) γ process is observed for the first time and the ratio of its partial width to that of the χc1(387

Search for decays of the Higgs boson into a pair of pseudoscalar particles decaying into Formula Presented using Formula Presented collisions at Formula Presented with the ATLAS detector

This paper presents a search for exotic decays of the Higgs boson into a pair of new pseudoscalar particles, Formula Presented, where one pseudoscalar decays into a Formula Presented-quark pair and the other decays into a Formula Presented-lepton pair, in the mass range Formula Presented. The analysis uses Formula Presented collision data at Formula Presented collected with the ATLAS detector at t

Rapidity dependence of antideuteron coalescence in pp collisions at s=13 TeV with ALICE

The production yields of antideuterons and antiprotons are measured in pp collisions at a center-of-mass energy of s=13 TeV, as a function of transverse momentum (pT) and rapidity (y), for the first time rapidity-differentially up to |y|=0.7. The measured spectra are used to study the pT and rapidity dependence of the coalescence parameter B2, which quantifies the coalescence probability of antide

ALICE upgrades during the LHC Long Shutdown 2

A Large Ion Collider Experiment (ALICE) has been conceived and constructed as a heavy-ion experiment at the LHC. During LHC Runs 1 and 2, it has produced a wide range of physics results using all collision systems available at the LHC. In order to best exploit new physics opportunities opening up with the upgraded LHC and new detector technologies, the experiment has undergone a major upgrade duri

Personality and conceptions of religiosity across the world's religions

Research assessing personality traits and religiosity across cultures has typically neglected variation across religious affiliations and has been limited to a small number of personality traits. This study examines the relationship between the Big Five personality traits and their facets, two theoretically distinct measures of religiosity, and twelve other personality traits across seven religiou

Arkivarieyrket mellan dåtid och framtid

Under 2023 tilldelades Emma Pihl Skoog, lektor i arkivvetenskap vid Södertörns högskola, och Ann-Sofie Klareld, lektor i arkivvetenskap vid Lunds universitet, ett stipendium från Stiftelsen Riksarkivarie Ingvar Anderssons fond. Syftet var blandannat att färdigställa en forskningsartikel om arkivariers arbetsuppgifter och de kompetenser som efterfrågas i samtida platsannonser på Arbetsförmedlingens

Transdisciplinary urban research : insights and experiences

The aim of this report is to provide insights on the expertise, knowledge, and experiences of conducting transdisciplinary urban research. To gather insights, we developed a set of questions based on a review of transdisciplinary research publications from 2010 to 2023 in the disciplines of Architecture, Planning, Geography, Urban Studies, and Sustainability Science. We used these questions as a g

Performance of the ATLAS forward proton Time-of-Flight detector in Run 2

We present performance studies of the Time-of-Flight (ToF) subdetector of the ATLAS Forward Proton (AFP) detector at the LHC. Efficiencies and resolutions are measured using high-statistics data samples collected at low and moderate pile-up in 2017, the first year when the detectors were installed on both sides of the interaction region. While low efficiencies are observed, of the order of a few p

Study of b-hadron decays to Λc+h−h′− final states

Decays of Ξb− and Ωb− baryons to Λc+h−h′− final states, with h−h′− being π−π−, K−π− and K−K− meson pairs, are searched for using data collected with the LHCb detector. The data sample studied corresponds to an integrated luminosity of 8.7 fb−1 of pp collisions collected at centre-of-mass energies s = 7, 8 and 13 TeV. The products of the relative branching fractions and fragmentation fractions for

Measurement of the mesonic decay branch of the K̄ NN quasibound state

We conducted measurements of K-+He3→πYN+N′ reactions using a 1GeV/cK - beam, with the objective of understanding the broad decay width of K̄NN (approximately twice as broad as that of Λ(1405) considered to be the K̄N quasibound state). We successfully reproduced distributions of the πYN invariant mass and momentum transfer for πYN using model-fitting functions for K̄NN formation and quasifree K̄ a

World Health Organization (WHO) guideline on the complementary feeding of infants and young children aged 6−23 months 2023: A multisociety response

The recent World Health Organization (WHO) guideline aims to provide evidence-based recommendations on complementary feeding (CF) of healthy term infants and young children 6−23 months living in low-, middle-, and high-income countries, including both breastfed and non-breastfed children. Like WHO, our organizations aim to promote optimal infant and young child nutrition and health, with a focus o

Measurement of associated J/ψ-ψ(2S) production cross-section in pp collisions at √s = 13 TeV

The cross-section of associated J/ψ-ψ(2S) production in proton-proton collisions at a centre-of-mass energy of (Formula presented.) TeV is measured using a data sample corresponding to an integrated luminosity of 4.2 fb−1, collected by the LHCb experiment. The measurement is performed for both J/ψ and ψ(2S) mesons having transverse momentum pT< 14 GeV/c and rapidity 2.0 < y < 4.5, assuming negligi

A model-independent measurement of the CKM angle γ in partially reconstructed B± → D*h± decays with D → KS0h+h− (h = π, K)

A measurement of CP-violating observables in B± → D*K± and B± → D*π± decays is made where the photon or neutral pion from the D*→ Dγ or D*→ Dπ0 decay is not reconstructed. The D meson is reconstructed in the self-conjugate decay modes, D → KS0π+π− or D → KS0K+K−. The distribution of signal yields in the D decay phase space is analysed in a model-independent way. The measurement uses a data sample

Global Consensus Recommendations on Improving the Safety of Chronic Total Occlusion Interventions

Safety is of critical importance to chronic total occlusion (CTO) percutaneous coronary intervention (PCI). This global consensus statement provides guidance on how to optimise the safety of CTO) PCI, addressing the following 12 areas: 1. Set-up for safe CTO PCI; 2. Guide catheter-–associated vessel injuries; 3. Hydraulic dissection, extraplaque haematoma expansion, and aortic dissections; 4. Haem