New measurement of the p-{anti p} total cross section at {radical}S = 1.8 TeV

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A new type of detector capable of reaching very small angles was successfully used in Fermilab E811 in Jan. 1996. It consists of a bundle of 15,000 scintillating fibers each of 100 {micro}m diameter. The fibers are oriented parallel to the beam and gave a measuring resolution of 38 {micro}m transverse to the beam. In this report the authors analyzed about 50,000 elastics as close as 3 mm from the beam. Simulated data runs show that the total cross section should be obtained to an accuracy of {+-}2%. The smallest t-bin used has a background subtraction of {approximately}20%, but for ... continued below

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7 p.

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Avila, C.; Guss, C. & Mondardini, M.R. September 1, 1997.

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Description

A new type of detector capable of reaching very small angles was successfully used in Fermilab E811 in Jan. 1996. It consists of a bundle of 15,000 scintillating fibers each of 100 {micro}m diameter. The fibers are oriented parallel to the beam and gave a measuring resolution of 38 {micro}m transverse to the beam. In this report the authors analyzed about 50,000 elastics as close as 3 mm from the beam. Simulated data runs show that the total cross section should be obtained to an accuracy of {+-}2%. The smallest t-bin used has a background subtraction of {approximately}20%, but for most of the t-bins the background is much smaller and the detection efficiency is over 95%. Very preliminary analysis gives a total cross section of {approximately}71 mb at {radical}s = 1.8 TeV using a luminosity-independent method. This is consistent with the earlier Fermilab E710 result which used a different kind of elastic detector. The rho-value analysis has not yet been completed. A personal interpretation (by Orear) of a slower rise in the total cross section is given at the end.

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7 p.

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INIS; OSTI as DE98050003

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  • 7. Blois workshop: international conference on elastic and diffractive scattering - recent advances in hadron physics, Seoul (Korea, Republic of), 10-14 Jun 1997

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  • Other: DE98050003
  • Report No.: FNAL/C--97/313-E
  • Report No.: CONF-9706197--
  • Grant Number: AC02-76CH03000
  • Office of Scientific & Technical Information Report Number: 291172
  • Archival Resource Key: ark:/67531/metadc688457

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Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

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  • September 1, 1997

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  • July 25, 2015, 2:20 a.m.

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  • Aug. 23, 2016, 3:39 p.m.

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Avila, C.; Guss, C. & Mondardini, M.R. New measurement of the p-{anti p} total cross section at {radical}S = 1.8 TeV, article, September 1, 1997; Batavia, Illinois. (digital.library.unt.edu/ark:/67531/metadc688457/: accessed November 22, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.