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L. Herder

University of Kansas

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Featured researches published by L. Herder.

Physical Review D | 1980

InclusiveK0,Λ0,K*±(890), andΣ*±(1385)production inppcollisions at 300 GeV/c

F. LoPinto; A. Brody; R. Engelmann; J. Hanlon; T. Kafka; S. Sommars; H. Wald; W. A. Mann; J. Schneps; R. Ammar; R. Davis; C. Eklund; L. Herder; N. Kwak; R. Riemer; R. Stump; K. Jaeger

Inclusive K/sup 0//K-bar/sup 0/, ..lambda../sup 0/, and Lambda-bar/sup 0/ cross sections have been determined using a 292-event/mb exposure of the hydrogen-filled 15-foot bubble chamber at Fermilab. From the invariant-mass distributions of V/sup 0/..pi../sup + -/ pairs we find that sigma(K*/sup + -/(890))=4.4 +- 1.4 mb, sigma(..sigma..*/sup + -/(1385))=0.54 +- 0.40 mb, and sigma(Sigma-bar*/sup + -/(1385))=0.45 +- 0.34 mb. It is estimated that 0.32 +- 0.11 of K/sup 0//K-bar/sup 0/s, 0.21 +- 0.16 of ..lambda..s, and 0.96 +- 0.75 of Lambda-bars originate from decays of K*(890) and ..sigma..*(1385), respectively.

Physical Review D | 1980

INCLUSIVE K0, LAMBDA0, K*+- (890), AND SIGMA*+- (1385) PRODUCTION IN P P COLLISIONS AT 300-GEV/C

F. LoPinto; A. Brody; R. Davis; T. Kafka; R. Riemer; R. Ammar; W. A. Mann; J. Schneps; R. Stump; J. Hanlon; S. Sommars; L. Herder; C. Eklund; R. Engelmann; N. Kwak; H. Wald; K. Jaeger

Inclusive K/sup 0//K-bar/sup 0/, ..lambda../sup 0/, and Lambda-bar/sup 0/ cross sections have been determined using a 292-event/mb exposure of the hydrogen-filled 15-foot bubble chamber at Fermilab. From the invariant-mass distributions of V/sup 0/..pi../sup + -/ pairs we find that sigma(K*/sup + -/(890))=4.4 +- 1.4 mb, sigma(..sigma..*/sup + -/(1385))=0.54 +- 0.40 mb, and sigma(Sigma-bar*/sup + -/(1385))=0.45 +- 0.34 mb. It is estimated that 0.32 +- 0.11 of K/sup 0//K-bar/sup 0/s, 0.21 +- 0.16 of ..lambda..s, and 0.96 +- 0.75 of Lambda-bars originate from decays of K*(890) and ..sigma..*(1385), respectively.

Physical Review D | 1980

Inclusive K/sup 0/,. lambda. /sup 0/, K*/sup + -/(890), and. sigma. */sup + -/(1385) production in pp collisions at 300 GeV/c

F. LoPinto; A. Brody; R. Engelmann; J. Hanlon; T. Kafka; S. Sommars; H. Wald; W. A. Mann; J. Schneps; R. Ammar; R. Davis; C. Eklund; L. Herder; N. Kwak; R. Riemer; R. Stump; K. Jaeger

Inclusive K/sup 0//K-bar/sup 0/, ..lambda../sup 0/, and Lambda-bar/sup 0/ cross sections have been determined using a 292-event/mb exposure of the hydrogen-filled 15-foot bubble chamber at Fermilab. From the invariant-mass distributions of V/sup 0/..pi../sup + -/ pairs we find that sigma(K*/sup + -/(890))=4.4 +- 1.4 mb, sigma(..sigma..*/sup + -/(1385))=0.54 +- 0.40 mb, and sigma(Sigma-bar*/sup + -/(1385))=0.45 +- 0.34 mb. It is estimated that 0.32 +- 0.11 of K/sup 0//K-bar/sup 0/s, 0.21 +- 0.16 of ..lambda..s, and 0.96 +- 0.75 of Lambda-bars originate from decays of K*(890) and ..sigma..*(1385), respectively.

Physical Review D | 1979

Study of inclusive reactions K/sup -/p. -->. K-bar/sup 0/ + X and K/sup -/p. -->. lambda. /sup 0/ + X at 6. 5 GeV/c

C. De Clercq; D. Johnson; J. Lemonne; P. Peeters; Peter B. Renton; J. Wickens; B. Musgrave; James Joseph Phelan; Peter F. Schultz; Reid G. Smith; A. J. Snyder; R. Ammar; Raymond G. Davis; C. Eklund; L. Herder; N. Kwak; L. Loos; R. Riemer; R. Stump; W.A. Morris; B.Y. Oh; M. Pratap; G. Sionakides; Gerald A. Smith; J. Whitmore; F.T. F.T. Dao; Elias Katsoufis; W. A. Mann; J. Schneps; A. J. Segar

Inclusive V/sup 0/ production in 6.5-GeV/c K/sup -/p interactions is studied using the ANL 12-ft-diameter hydrogen bubble chamber. The total cross sections for inclusive K-bar/sup 0/ and ..lambda../sup 0/ production are sigma (K-bar/sup 0/) = 7.98 +- 0.49 mb and sigma (..lambda../sup 0/) = 3.94 +- 0.24 mb. Semi-inclusive differential cross sections are determined as functions of Feynman x and transverse momentum squared of the V/sup 0/s, and of four-momentum transfer to the V/sup 0/. The average charge multiplicity, the ratio /D, and the correlation function f/sub 2//sup cc/ for the neutrally charged hadronic system recoiling from the V/sup 0/ are determined as functions of the mass of the recoiling system. Results are used to examine universal aspects of multiparticle production.

Physical Review D | 1979

Study of inclusive reactions K-p→K̄0+X and K-p→Λ0+X at 6.5 GeV/c

Catherine De Clercq; D. Johnson; J. Lemonne; P. Peeters; Peter B. Renton; J. Wickens; B. Musgrave; James Joseph Phelan; Peter F. Schultz; Rodger Smith; A. J. Snyder; Ron Ammar; Raymond G. Davis; C. Eklund; L. Herder; N. Kwak; L. Loos; R. Riemer; R. Stump; W.A. Morris; B.Y. Oh; M. Pratap; G. Sionakides; Gerald A. Smith; James Whitmore; F.T. F.T. Dao; Elias Katsoufis; Anthony Mann; J. Schneps; A. J. Segar

Inclusive V/sup 0/ production in 6.5-GeV/c K/sup -/p interactions is studied using the ANL 12-ft-diameter hydrogen bubble chamber. The total cross sections for inclusive K-bar/sup 0/ and ..lambda../sup 0/ production are sigma (K-bar/sup 0/) = 7.98 +- 0.49 mb and sigma (..lambda../sup 0/) = 3.94 +- 0.24 mb. Semi-inclusive differential cross sections are determined as functions of Feynman x and transverse momentum squared of the V/sup 0/s, and of four-momentum transfer to the V/sup 0/. The average charge multiplicity, the ratio /D, and the correlation function f/sub 2//sup cc/ for the neutrally charged hadronic system recoiling from the V/sup 0/ are determined as functions of the mass of the recoiling system. Results are used to examine universal aspects of multiparticle production.

Physical Review D | 1979

Correlations between neutral and charged pions produced in 300-GeV/c pp collisions

T. Kafka; F. LoPinto; A. Brody; R. Engelmann; J. Hanlon; S. Sommars; W. A. Mann; F. T. Dao; J. Schneps; A. J. Segar; H. Wald; R. Ammar; R. Davis; C. Eklund; L. Herder; N. Kwak; R. Riemer; R. Stump; D. Zacrep; K. Jaeger

Physical Review D | 1981

Reaction K/sup -/p. -->. K-bar/sup 0/p. pi. /sup -/ at 6. 5 GeV/c

S. Toaff; B. Musgrave; James Joseph Phelan; Peter F. Schultz; Rodger Smith; A. J. Snyder; R. Ammar; R. Davis; C. Eklund; L. Herder; N. Kwak; L. Loos; R. Riemer; R. Stump

Archive | 1981

Reaction K⁻p. -->. K-bar°p. pi. ⁻ at 6. 5 GeV/c

S. Toaff; B. Musgrave; James Joseph Phelan; Peter F. Schultz; Reid G. Smith; A. J. Snyder; R. Ammar; R. E. P. Davis; C. Eklund; L. Herder; N. Kwak; L. Loos; R. Riemer; R. Stump

Physical Review D | 1980

Inclusive K0, Lambda0, K*+/-(890), and Sigma*+/-(1385) production in pp collisions at 300 GeV/c

F. Lopinto; A. D. Brody; R. J. Engelmann; J. Hanlon; T. Kafka; S. Sommars; H. B. Wald; W. A. Mann; J. Schneps; R. Ammar; R. E. P. Davis; C. Eklund; L. Herder; N. Kwak; R. Riemer; R. Stump; K. Jaeger

Physical Review D | 1980

Inclusive K0, ?0, K*(890), and S*(1385) production in pp collisions at 300 GeV/c

F. Lopinto; A. D. Brody; R. J. Engelmann; J. Hanlon; T. Kafka; S. Sommars; H. B. Wald; W. A. Mann; J. Schneps; R. Ammar; R. E. P. Davis; C. Eklund; L. Herder; N. Kwak; R. Riemer; R. Stump; K. Jaeger

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N. Kwak

University of Kansas

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R. Riemer

University of Kansas

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R. Stump

University of Kansas

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J. Schneps

Tufts University

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R. Ammar

University of Kansas

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R. Davis

University of Kansas

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A. Brody

Stony Brook University

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C. Eklund

University of Kansas

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F. LoPinto

Stony Brook University

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Gerald A. Smith

University of California

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