Measurements of inclusive Δ̄° production with large χF at the Spp̄S collider

A. Brandt; S. Erhan; A. Kuzucu; M. Medinnis; N. Ozdes; P. E. Schlein; M. T. Zeyrek; J. G. Zweizig; J. B. Chèze; J. Zsembery

Measurements of inclusive Δ̄° production with large χ_F at the Spp̄S collider

A. Brandt, S. Erhan, A. Kuzucu, M. Medinnis, N. Ozdes, P. E. Schlein, M. T. Zeyrek, J. G. Zweizig, J. B. Chèze, J. Zsembery

Physics

Research output: Contribution to journal › Article

1 Citation (Scopus)

Abstract

We report results of inclusive measurements of Δ̄° s, produced in the forward direction at the Spp̄S with √s = 630 GeV, using the UA8 small angle Roman Pot spectrometers. These measurements cover the range in Feynman-χ_F and transverse momentum, 0,6 <χ_F <1.0 and 0.4 <p₁ <0.7 GeV, respectively. Within a systematic uncertainty of ±20% on the absolute cross section measurements, the results are indistinguishable from those made by some of us in two earlier experiments at the CERN Intersecting Storage Rings, with energies, √s = 53 and 62 GeV. In the χ_F-range, 0.6-0.9, the absolute cross sections are lower by a factor of 2 to 3 than the predictions of the Lund model as embodied in the PYTHIA 5.6 and JETSET 7.3 Monte Carlo programs, indicating inadequacies in knowledge of the baryon fragmentation function. For the largest χ_F-range, 0.9-1.0, the measurements agree with the Monte Carlo predictions. We have measured the average Δ̄° polarization for our events and find (6 ± 12%), consistent with previous measurements at the ISR in the present region of χ_F-p₁,.

Original language	English
Pages (from-to)	3-18
Number of pages	16
Journal	Nuclear Physics B
Volume	519
Issue number	1-2
Publication status	Published - May 18 1998

Fingerprint

cross sections

predictions

transverse momentum

baryons

fragmentation

spectrometers

momentum

polarization

energy

ASJC Scopus subject areas

Nuclear and High Energy Physics

Cite this

Brandt, A., Erhan, S., Kuzucu, A., Medinnis, M., Ozdes, N., Schlein, P. E., ... Zsembery, J. (1998). Measurements of inclusive Δ̄° production with large χ_F at the Spp̄S collider. Nuclear Physics B, 519(1-2), 3-18.

Measurements of inclusive Δ̄° production with large χ_F at the Spp̄S collider. / Brandt, A.; Erhan, S.; Kuzucu, A.; Medinnis, M.; Ozdes, N.; Schlein, P. E.; Zeyrek, M. T.; Zweizig, J. G.; Chèze, J. B.; Zsembery, J.

In: Nuclear Physics B, Vol. 519, No. 1-2, 18.05.1998, p. 3-18.

Research output: Contribution to journal › Article

Brandt, A, Erhan, S, Kuzucu, A, Medinnis, M, Ozdes, N, Schlein, PE, Zeyrek, MT, Zweizig, JG, Chèze, JB & Zsembery, J 1998, 'Measurements of inclusive Δ̄° production with large χ_F at the Spp̄S collider', Nuclear Physics B, vol. 519, no. 1-2, pp. 3-18.

Brandt A, Erhan S, Kuzucu A, Medinnis M, Ozdes N, Schlein PE et al. Measurements of inclusive Δ̄° production with large χ_F at the Spp̄S collider. Nuclear Physics B. 1998 May 18;519(1-2):3-18.

Brandt, A. ; Erhan, S. ; Kuzucu, A. ; Medinnis, M. ; Ozdes, N. ; Schlein, P. E. ; Zeyrek, M. T. ; Zweizig, J. G. ; Chèze, J. B. ; Zsembery, J. / Measurements of inclusive Δ̄° production with large χ_F at the Spp̄S collider. In: Nuclear Physics B. 1998 ; Vol. 519, No. 1-2. pp. 3-18.

@article{92701033073345079f7da1b64f58aa1f,

title = "Measurements of inclusive Δ̄° production with large χF at the Spp̄S collider",

abstract = "We report results of inclusive measurements of Δ̄° s, produced in the forward direction at the Spp̄S with √s = 630 GeV, using the UA8 small angle Roman Pot spectrometers. These measurements cover the range in Feynman-χF and transverse momentum, 0,6 <χF <1.0 and 0.4 1 <0.7 GeV, respectively. Within a systematic uncertainty of ±20{\%} on the absolute cross section measurements, the results are indistinguishable from those made by some of us in two earlier experiments at the CERN Intersecting Storage Rings, with energies, √s = 53 and 62 GeV. In the χF-range, 0.6-0.9, the absolute cross sections are lower by a factor of 2 to 3 than the predictions of the Lund model as embodied in the PYTHIA 5.6 and JETSET 7.3 Monte Carlo programs, indicating inadequacies in knowledge of the baryon fragmentation function. For the largest χF-range, 0.9-1.0, the measurements agree with the Monte Carlo predictions. We have measured the average Δ̄° polarization for our events and find (6 ± 12{\%}), consistent with previous measurements at the ISR in the present region of χF-p1,.",

author = "A. Brandt and S. Erhan and A. Kuzucu and M. Medinnis and N. Ozdes and Schlein, {P. E.} and Zeyrek, {M. T.} and Zweizig, {J. G.} and Ch{\`e}ze, {J. B.} and J. Zsembery",

year = "1998",

month = "5",

day = "18",

language = "English",

volume = "519",

pages = "3--18",

journal = "Nuclear Physics B",

issn = "0550-3213",

publisher = "Elsevier",

number = "1-2",

}

TY - JOUR

T1 - Measurements of inclusive Δ̄° production with large χF at the Spp̄S collider

AU - Brandt, A.

AU - Erhan, S.

AU - Kuzucu, A.

AU - Medinnis, M.

AU - Ozdes, N.

AU - Schlein, P. E.

AU - Zeyrek, M. T.

AU - Zweizig, J. G.

AU - Chèze, J. B.

AU - Zsembery, J.

PY - 1998/5/18

Y1 - 1998/5/18

N2 - We report results of inclusive measurements of Δ̄° s, produced in the forward direction at the Spp̄S with √s = 630 GeV, using the UA8 small angle Roman Pot spectrometers. These measurements cover the range in Feynman-χF and transverse momentum, 0,6 <χF <1.0 and 0.4 1 <0.7 GeV, respectively. Within a systematic uncertainty of ±20% on the absolute cross section measurements, the results are indistinguishable from those made by some of us in two earlier experiments at the CERN Intersecting Storage Rings, with energies, √s = 53 and 62 GeV. In the χF-range, 0.6-0.9, the absolute cross sections are lower by a factor of 2 to 3 than the predictions of the Lund model as embodied in the PYTHIA 5.6 and JETSET 7.3 Monte Carlo programs, indicating inadequacies in knowledge of the baryon fragmentation function. For the largest χF-range, 0.9-1.0, the measurements agree with the Monte Carlo predictions. We have measured the average Δ̄° polarization for our events and find (6 ± 12%), consistent with previous measurements at the ISR in the present region of χF-p1,.

AB - We report results of inclusive measurements of Δ̄° s, produced in the forward direction at the Spp̄S with √s = 630 GeV, using the UA8 small angle Roman Pot spectrometers. These measurements cover the range in Feynman-χF and transverse momentum, 0,6 <χF <1.0 and 0.4 1 <0.7 GeV, respectively. Within a systematic uncertainty of ±20% on the absolute cross section measurements, the results are indistinguishable from those made by some of us in two earlier experiments at the CERN Intersecting Storage Rings, with energies, √s = 53 and 62 GeV. In the χF-range, 0.6-0.9, the absolute cross sections are lower by a factor of 2 to 3 than the predictions of the Lund model as embodied in the PYTHIA 5.6 and JETSET 7.3 Monte Carlo programs, indicating inadequacies in knowledge of the baryon fragmentation function. For the largest χF-range, 0.9-1.0, the measurements agree with the Monte Carlo predictions. We have measured the average Δ̄° polarization for our events and find (6 ± 12%), consistent with previous measurements at the ISR in the present region of χF-p1,.

UR - http://www.scopus.com/inward/record.url?scp=0032542998&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0032542998&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:0032542998

VL - 519

SP - 3

EP - 18

JO - Nuclear Physics B

JF - Nuclear Physics B

SN - 0550-3213

IS - 1-2