Study of event mixing and its application to the extraction of resonance signals

Drijard, D.; Fischer, H. G.; Nakada, T.

doi:10.1016/0167-5087(84)90275-8

Cited by 78 publications

(47 citation statements)

References 7 publications

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“…As a possible source of this undershoot, the correlation of kaons stemming from different φ mesons has been discussed in Ref. [32]. In our case, it was shown by simulation that this effect is small thanks to the large acceptance of the NA49 MTPCs.…”

Section: Extraction Of Raw Yieldsmentioning

confidence: 68%

“…To reconstruct the combinatorial background of uncorrelated pairs, candidates from different events were combined. The mixed-event spectrum was subtracted from the same-event spectrum after normalization to the same number of pairs [32]. Figure 2 shows the background-subtracted invariant-mass spectra in the total forward acceptance for different collision energies.…”

Section: Extraction Of Raw Yieldsmentioning

confidence: 99%

“…Then, the statistical errors in the event-mix subtracted invariant-mass spectrum was calculated as [32] …”

Section: F Statistical and Systematic Errorsmentioning

confidence: 99%

See 2 more Smart Citations

Energy dependence ofϕmeson production in centralPb+Pbcollisions at

Alt¹,

Antičić²,

Baatar³

et al. 2008

Phys. Rev. C

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Section: Extraction Of Raw Yieldsmentioning

confidence: 68%

Section: Extraction Of Raw Yieldsmentioning

confidence: 99%

See 1 more Smart Citation

Energy dependence ofϕmeson production in centralPb+Pbcollisions at

Alt¹,

Antičić²,

Baatar³

et al. 2008

Phys. Rev. C

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“…-The evolution of Λ andΛ yields relative to p+p is obtained from p+π − and p+π + mass distributions exploiting the event mixing technique described in [15] and using vertex tracks both for the baryon and for the meson involved. The resulting yield ratios are shown in Figs.…”

Section: Feed-down Correctionmentioning

confidence: 99%

Inclusive production of charged pions in p + C collisions at 158 GeV/c beam momentum

Alt¹,

Baatar²,

Barna³

et al. 2007

Eur. Phys. J. C

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143

175

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The production of charged pions in minimum bias p+C interactions is studied using a sample of 377 000 inelastic events obtained with the NA49 detector at the CERN SPS at 158 GeV/c beam momentum. The data cover a phase space area ranging from 0 to 1.8 GeV/c in transverse momentum and from -0.1 to 0.5 in Feynman x. Inclusive invariant cross sections are given on a grid of 270 bins per charge thus offering for the first time a dense coverage of the projectile hemisphere and of the cross-over region into the target fragmentation zone.

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“…There is abundant literature on the subject [42,43,44,45,46] and it has become a popular instrument to determine background and isolate particular reactions that peak at a certain place.…”

Section: Mixed Events Calculationmentioning

confidence: 99%

On the background in the $ \gamma$p $ \rightarrow$ $ \omega$($ \pi^{0}_{}$ $ \gamma$)p reaction and mixed event simulation

2010

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Abstract. In this paper we evaluate sources of background for the γp → ωp, with the ω detected through its π 0 γ decay channel, to compare with the experiment carried out at ELSA. We find background from γp → π 0 π 0 p followed by decay of a π 0 into two γ, recombining one π 0 and one γ, and from the γp → π 0 ηp reaction with subsequent decay of the η into two photons. This background accounts for the data at π 0 γ invariant masses beyond 700 MeV, but strength is missing at lower invariant masses which was attributed to photon misidentification events, which we simulate to get a good reproduction of the experimental background. Once this is done, we perform an event mixing simulation to reproduce the calculated background and we find that the method provides a good description of the background at low π 0 γ invariant masses but fakes the background at high invariant masses, making background events at low invariant masses, which are due to γ misidentification events, responsible for the background at high invariant masses which is due to the γp → π 0 π 0 p and γp → π 0 ηp reactions.PACS. 13.60.Le describing text of that key -25.20.Lj describing text of that key

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Study of event mixing and its application to the extraction of resonance signals

Cited by 78 publications

References 7 publications

Energy dependence ofϕmeson production in centralPb+Pbcollisions at

Energy dependence ofϕmeson production in centralPb+Pbcollisions at

Inclusive production of charged pions in p + C collisions at 158 GeV/c beam momentum

On the background in the $ \gamma$p $ \rightarrow$ $ \omega$($ \pi^{0}_{}$ $ \gamma$)p reaction and mixed event simulation

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