24 Result(s)
within
N Ahmad
Astronomy, Astrophysics and Cosmology
Elementary Particles, Quantum Field Theory
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Open AccessFirst proton–proton collisions at the LHC as observed with the ALICE detector: measurement of the charged-particle pseudorapidity density at \(\sqrt{s}=900\) GeV
On 23rd November 2009, during the early commissioning of the CERN Large Hadron Collider (LHC), two counter-rotating proton bunches were circulated for the first time concurrently in the machine, at the LHC inj...
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Open AccessCharged-particle multiplicity measurement in proton–proton collisions at \(\sqrt{s}=0.9\) and 2.36 TeV with ALICE at LHC
Charged-particle production was studied in proton–proton collisions collected at the LHC with the ALICE detector at centre-of-mass energies 0.9 TeV and 2.36 TeV in the pseudorapidity range |η|<1.4. In the central...
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Open AccessCharged-particle multiplicity measurement in proton–proton collisions at \(\sqrt{s}=7\) TeV with ALICE at LHC
The pseudorapidity density and multiplicity distribution of charged particles produced in proton–proton collisions at the LHC, at a centre-of-mass energy ...
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Open AccessStrange particle production in proton–proton collisions at \(\sqrt{s}=0.9\) \(\mbox {\){\rm TeV}\(}\) with ALICE at the LHC
The production of mesons containing strange quarks ( \(\mbox {\)\mathrm {K^{0}_{S}}\(}\) , φ) and both singly and doubly strange bary...
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Open AccessProduction of pions, kaons and protons in pp collisions at \(\sqrt{s}= 900~\mathrm{GeV}\) with ALICE at the LHC
The production of π +, π −, K+, K−, p, and \(\overline{\mathrm{p}}\) at mid-rapid...
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Open AccessTransverse sphericity of primary charged particles in minimum bias proton–proton collisions at \(\mathbf{\sqrt{s}=0.9},~\mathbf{2.76}~\mbox{and}~\mathbf{7}~\mbox{TeV}\)
Measurements of the sphericity of primary charged particles in minimum bias proton–proton collisions at $\sqrt{s}=0.9,~2.76\mbox{ and }7~\math...
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Open AccessProduction of K∗(892)0 and ϕ(1020) in pp collisions at \(\sqrt{s}=7\ \mathrm{TeV}\)
The production of K∗(892)0 and ϕ(1020) in pp collisions at \(\sqrt{s}=7~\mathrm{TeV}\) was measured by the ALICE experiment at th...
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Open AccessMeasurement of inelastic, single- and double-diffraction cross sections in proton–proton collisions at the LHC with ALICE
Measurements of cross sections of inelastic and diffractive processes in proton–proton collisions at LHC energies were carried out with the ALICE detector. The fractions of diffractive processes in inelastic c...
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Open AccessMid-rapidity anti-baryon to baryon ratios in pp collisions at \(\sqrt{s} = 0.9,\ 2.76\mbox{ and }7\mbox{ TeV}\) measured by ALICE
The ratios of yields of anti-baryons to baryons probes the mechanisms of baryon-number transport. Results for $\overline{\mathrm {p}}/{\mathrm...
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Open AccessCharmonium and e + e − pair photoproduction at mid-rapidity in ultra-peripheral Pb–Pb collisions at \(\sqrt{s_{\mathrm{NN}}} = 2.76\ \mbox{TeV}\)
The ALICE Collaboration at the LHC has measured the J/ψ and ψ′ photoproduction at mid-rapidity in ultra-peripheral Pb–Pb collisions at $\sqrt{...
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Open AccessEnergy dependence of the transverse momentum distributions of charged particles in pp collisions measured by ALICE
Differential cross sections of charged particles in inelastic pp collisions as a function of p T have been measured at $\sqrt{...
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Open AccessMeasurement of quarkonium production at forward rapidity in \(\mathbf {pp}\) collisions at \(\mathbf {\sqrt{s}=7}~\) TeV
The inclusive production cross sections at forward rapidity of \({\mathrm{J}/\psi }\) ...
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Open AccessTransverse momentum dependence of inclusive primary charged-particle production in p–Pb collisions at \(\sqrt{s_\mathrm{{NN}}}=5.02~\text {TeV}\)
The transverse momentum ( \(p_{\mathrm T}\) p ...
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Open AccessEvent-by-event mean \(\varvec{p}_{\mathbf {T}}\) fluctuations in pp and Pb–Pb collisions at the LHC
Event-by-event fluctuations of the mean transverse momentum of charged particles produced in pp collisions at \(\sqrt{s}\) ...
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Open AccessNeutral pion production at midrapidity in pp and Pb–Pb collisions at \(\sqrt{s_{{\mathrm {NN}}}}= 2.76\,{\mathrm {TeV}}\)
Invariant yields of neutral pions at midrapidity in the transverse momentum range \(0.6 < {p_\mathrm{T}} < 12\,{\mathrm {GeV}}/\) ...
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Open AccessProduction of \(\mathbf {\Sigma (1385)^{\pm }}\) and \(\mathbf {\** (1530)^{0}}\) in proton–proton collisions at \(\mathbf {\sqrt{s}=}\) 7 TeV
The production of the strange and double-strange baryon resonances ( \(\Sigma (1385)^{\pm }\) ...
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Open AccessInclusive photon production at forward rapidities in proton–proton collisions at \(\mathbf {\sqrt{s}}\) = 0.9, 2.76 and 7 TeV
The multiplicity and pseudorapidity distributions of inclusive photons have been measured at forward rapidities ( \(2.3 < \eta < 3.9\) ...
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Open AccessProduction of \({\pi ^0}\) and \(\eta \) mesons up to high transverse momentum in pp collisions at 2.76 TeV
The invariant differential cross sections for inclusive \(\pi ^{0}\) ...
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Open AccessEnergy dependence of forward-rapidity \(\mathrm {J}/\psi \) and \(\psi \mathrm {(2S)}\) production in pp collisions at the LHC
We present results on transverse momentum ( \(p_{\mathrm {\textsc {t}}}\) ...
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Open AccessMeasurement of D-meson production at mid-rapidity in pp collisions at \({\sqrt{s}=7}\) TeV
The production cross sections for prompt charmed mesons \(\mathrm{D^0}\) ...
