Simplicity of “transverse energy” spectra of hadrons

Bartke, J.; Deutschmann, M.; Kirk, H.; Sixel, P.; Kaufmann, H. H.; Klein, M.; Böckmann, K.; Hartmann, R.; Kocher, D. J.; Malhotra, P.K.; Morrison, D. R. O.; Porth, P.; Triantis, F. A.; Zaorska, J.; Zieliński, W.; Królikowski, J.

doi:10.1016/0550-3213(77)90092-x

Cited by 32 publications

(3 citation statements)

References 5 publications

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“…This parameter was originally identified as the highest possible temperature for hadronic matter. Indeed, it was found that the m T spectra of different particle species (e.g., π − , K 0 , , ρ 0 , and ω) produced in hadronic collisions at center-of-mass energies of [8][9][10][11][12][13][14][15][16] GeV are reasonably well described by an exponential or Bose-Einstein distribution with the inverse slope parameter being independent of the particle mass [2,3]. Subsequently, the effect was called "m T -scaling" [4].…”

Section: Introductionmentioning

confidence: 99%

Applicability of transverse mass scaling in hadronic collisions at energies available at the CERN Large Hadron Collider

et al. 2017

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We present a study on the applicability of transverse mass scaling for identified particle spectra in proton-proton collisions at √ s = 7 TeV based on data taken by the ALICE experiment at the LHC. The measured yields are parametrized and compared to estimates obtained from a generalized transverse mass scaling approach applied to different reference particle spectra. It is found that generalized transverse mass scaling is not able to describe the measured spectra over the full range in transverse momentum. At low p T , deviations of 20% or more are obtained, in particular, if pions are used as reference particles. A better scaling performance is obtained when kaons are used as reference particles. At high p T all tested spectra with the possible exception of the charged kaons exhibit a scaling behavior. Investigating the feed-down contributions from resonance decays to the charged pion yields reveals, that using them as reference a general scaling may not be achievable. Our findings imply that for precision measurements of direct photon and di-electron spectra at low transverse momentum one should measure the relevant hadronic background, instead of relying on m T scaling for its estimate.

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Section: Introductionmentioning

confidence: 99%

Applicability of transverse mass scaling in hadronic collisions at energies available at the CERN Large Hadron Collider

et al. 2017

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“…Quite different theoretical explanations [65][66][67] can account for this observation. For various proton and pion-induced reactions at similar incident energies [68][69][70][71][72][73][74][75] it is observed that the η yield obeys m T -scaling to good accuracy [76].…”

Section: Background Calculation and Direct Photon Excessmentioning

confidence: 99%

DIRECT PHOTON PRODUCTION IN 158 A GEV ²⁰⁸PB+²⁰⁸PB COLLISIONS

Peitzmann¹

2001

Nucleus–Nucleus Collisions

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Section: Background Calculation and Direct Photon Excessmentioning

confidence: 99%

Direct photon production in 158 A GeV Pb+Pb collisions

Buijs¹

2000

Nuclear Physics A

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A measurement of direct photon production in 208 Pb+ 208 Pb collisions at 158 A GeV has been carried out in the CERN WA98 experiment. The invariant yield or upper limit of direct photons as a function of transverse momentum in the interval 0.5 < pT < 4 GeV/c is presented. A significant direct photon excess is observed at pT > 1.5 GeV/c in central collisions. The results are compared to proton-induced results and to theoretical predictions. Implications for the dynamics of high-energy heavy-ion collisions are discussed.

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Simplicity of “transverse energy” spectra of hadrons

Cited by 32 publications

References 5 publications

Applicability of transverse mass scaling in hadronic collisions at energies available at the CERN Large Hadron Collider

Applicability of transverse mass scaling in hadronic collisions at energies available at the CERN Large Hadron Collider

DIRECT PHOTON PRODUCTION IN 158 A GEV ²⁰⁸PB+²⁰⁸PB COLLISIONS

Direct photon production in 158 A GeV Pb+Pb collisions

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Simplicity of “transverse energy” spectra of hadrons

Cited by 32 publications

References 5 publications

Applicability of transverse mass scaling in hadronic collisions at energies available at the CERN Large Hadron Collider

Applicability of transverse mass scaling in hadronic collisions at energies available at the CERN Large Hadron Collider

DIRECT PHOTON PRODUCTION IN 158 A GEV 208PB+208PB COLLISIONS

Direct photon production in 158 A GeV Pb+Pb collisions

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Product

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DIRECT PHOTON PRODUCTION IN 158 A GEV ²⁰⁸PB+²⁰⁸PB COLLISIONS