H. C. Fenker | Researchain

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Featured researches published by H. C. Fenker.

Physics Letters B | 1985

Observation of the Cabibbo-suppressed decay D±→φπ±

C.H. Georgiopoulos; A. Napier; J. Schneps; K.W. Lai; J. LeBritton; Y.C. Lin; Pifer Ae; H. C. Fenker; D. Green; J.R. Albright; Davenport Tf; J.H. Goldman; S. Hagopian; J.E. Lannutti; G. E. Canough; Chang Cc; T.C. Davis; R.W. Joyner; J. Poirier; Marraffino Jm; J. W. Waters; M.S. Websters; E.G.H. Williams; J. Woosley; J. Ficenec; S. Torres; W.P. Trower

Abstract We observe the Cabibbo-suppressed decay D ± → φπ ± in pN interaction at 400 GeV c incident proton momentum. No evidence for F ± → φπ ± decays is seen.

Physical Review D | 1997

Atomic mass dependence ofΞ−andΞ¯+production in central 250 GeVπ−-nucleon interactions

G.A. Alves; S. Amato; J. C. Anjos; J. A. Appel; J. Astorga; T. Bernard; S. B. Bracker; L. Cremaldi; W. D. Dagenhart; C. Darling; R. L. Dixon; D. Errede; H. C. Fenker; D. R. Green; Robert Jedicke; P. E. Karchin; C. Kennedy; S. Kwan; L. Lueking; J. R. T. de Mello Neto; J. Metheny; R. H. Milburn; J. M. De Miranda; H. da Motta Filho; A. Napier; D. Passmore; A. Rafatian; A. C. dos Reis; W. R. Ross; A. Santoro

We present the first measurement of the atomic mass dependence of central Ξ− and Ξ + production. It is measured using a sample of 22,459 Ξ−’s and Ξ + ’s produced in collisions between a 250 GeV π− beam and targets of beryllium, aluminum, copper, and tungsten. The relative cross sections are fit to theWe present the first measurement of the atomic mass dependence of central \Xi^- and \overline{\Xi}^+ production. It is measured using a sample of 22,459 \Xi^-s and \overline{\Xi}^+s produced in collisions between a 250 GeV \pi^- beam and targets of beryllium, aluminum, copper, and tungsten. The relative cross sections are fit to the two parameter function \sigma_0 A^\alpha, where A is the atomic mass. We measure \alpha = 0.924+-0.020+-0.025, for Feynman-x in the range -0.09

Physical Review D | 1986

Observation of phiK pi decay of the K

Torres S; Ficenec; Mikocki S; W.P. Trower; Kwan Wu Lai; LeBritton J; Ying-Chuan Lin; Pifer Ae; H. C. Fenker; D. Green; Davenport Tf; J.H. Goldman; S. L. Hagopian; Joseph E. Lannutti; Canough Ge; Chang Cc; T. C. Davis; Richard W. Joyner; J. Poirier; Georgiopoulos Ch; A. Napier; Marraffino Jm; J. W. Waters; M. Webster; E.G.H. Williams; Woosley Jk

We have studied inclusive pN..-->..K-/sup +/K/sup -/K/sup +/K/sup -/X final states at 400 GeV/c and present here evidence for K/sup *//sup 0/(2060)..-->..phiK/sup +-/..pi../sup minus-or-plus/ and phiK-italic/sup *//sup 0/(890). .AE

Physics Letters B | 1984

K∗±(892) Production in π−N interactions at 200 GeV/c

A. Napier; J. Schneps; T. Y. Chen; E.W. Jenkins; K-W. Lai; J. Le Britton; Y.C. Lin; Pifer Ae; H. C. Fenker; D. Green; J.R. Albright; J.H. Goldman; S. Hagopian; J.E. Lannutti; J.E. Piper; Chang Cc; T.C. Davis; R.N. Diamond; K. J. Johnson; R.W. Joyner; J. Poirier; Marraffino Jm; Charles E. Roos; J. W. Waters; M. Webster; E.G.H. Williams; J.R. Ficenec; S. Torres; W.P. Trower

Abstract K ∗± (892) production is studied in the reaction π − N → K S 0 K S 0 + X where X includes up to five observed charged particles. An excess of K ∗− over K ∗+ is observed for Feynman- x > 0.1. The ratio of K ∗+ to K ∗− decreases with x as predicted by QCD counting rules. K S 0 and K ∗ production are compared to recent D and D ∗ data from other experiments.

Physical Review D | 1984

Diffractive production of K/sub S//sup 0/K/sub S//sup 0/. pi. /sup +/. pi. /sup -/. pi. /sup -/ in. pi. /sup -/N interactions at 200 GeV/c

Chang Cc; T.C. Davis; R.N. Diamond; K. J. Johnson; Richard W. Joyner; J. Poirier; Ting Chen; E.W. Jenkins; Kwan Wu Lai; LeBritton J; Ying-Chuan Lin; Pifer Ae; H. C. Fenker; D. Green; J.R. Albright; J.H. Goldman; S. L. Hagopian; Joseph E. Lannutti; John Piper; A. Napier; Marraffino Jm; J. W. Waters; Webster; E.G.H. Williams; J. Ficenec; W.P. Trower

The diffractive dissociation of a 200-GeV/c ..pi../sup -/ beam into K/sub S//sup 0/K/sub S//sup 0/..pi../sup +/..pi../sup -/..pi../sup -/ has been observed. The diffractive K/sub S//sup 0/K/sub S//sup 0/..pi../sup +/..pi../sup -/..pi../sup -/ cross section is 1.59 +- 0.78 ..mu..b. The ratio of the diffractive K/sub S//sup 0/K/sub S//sup 0/..pi../sup +/..pi../sup -/..pi../sup -/ cross section to the diffractive K/sub S//sup 0/K/sub S//sup 0/..pi../sup -/ cross section is 0.40 +- 0.13, which is in good agreement with a diffractive-fragmentation-model prediction of 0.36. There is evidence for simultaneous production of K/sup asterisk-/ and K/sup asterisk+/ in the diffractive K/sub S//sup 0/K/sub S//sup 0/..pi../sup +/..pi../sup -/..pi../sup -/ sample. The K/sup asterisk+-/K/sub S//sup 0/..pi../sup - +/ mass distribution shows an enhancement near 1.95 GeV.

Physical Review Letters | 1996

FORWARD CROSS SECTIONS FOR PRODUCTION OF D+, D0, DS, D*+, AND LAMBDA C IN 250 GEV PI , K, AND P INTERACTIONS WITH NUCLEI

G.A. Alves; S. Amato; J. C. Anjos; J. A. Appel; J. Astorga; S. B. Bracker; L. Cremaldi; W. D. Dagenhart; C. Darling; R. L. Dixon; D. Errede; H. C. Fenker; D. R. Green; Robert Jedicke; P. E. Karchin; C. Kennedy; S. Kwan; L. Lueking; J. R. T. de Mello Neto; J. Metheny; R. H. Milburn; J. M. De Miranda; H. da Motta Filho; A. Napier; D. Passmore; A. Rafatian; A. C. dos Reis; W. R. Ross; A. Santoro; M. Sheaff

Physical Review Letters | 1993

Atomic mass dependence of [ital D][sup [plus minus]] and [ital D][sup 0],[ital [bar D]] [sup 0] production in 250 GeV [pi][sup [plus minus]]-nucleon interactions

G.A. Alves; S. Amato; J. C. Anjos; J. A. Appel; Stephen B. Bracker; L. Cremaldi; C. Darling; R. L. Dixon; D. Errede; H. C. Fenker; D. Green; Robert Jedicke; D. Kaplan; P. E. Karchin; S. Kwan; I. Leedom; L. Lueking; G.J. Luste; P. Mantsch; J. R. T. de Mello Neto; J. Metheny; R. H. Milburn; J. M. De Miranda; H. da Motta Filho; A. Napier; A. Rafatian; A. C. dos Reis; S. Reucroft; W. R. Ross; A.F.S. Santoro

Physics Letters B | 2003

Asymmetries in the production of Λ0 in 250 GeV/cπ±, K± and p–nucleon interactions

G.A. Alves; S. Amato; J. C. Anjos; J. A. Appel; J. Astorga; T Bernard; S. Bracker; L. Cremaldi; W. D. Dagenhart; C. Darling; D Errede; H. C. Fenker; D. Green; R Jedicke; P. E. Karchin; S. Kwan; L. Lueking; J. R. T. de Mello Neto; J. Metheny; R. H. Milburn; J. M. De Miranda; H. da Motta; A. Napier; M.S Nicola; D. Passmore; A. Rafatian; A. C. dos Reis; W. R. Ross; A. Santoro; M. Sheaff

Physical Review D | 1986

Inclusive strange-particle production in single-vee events in 200-GeV/c pi -N interactions.

Mikocki S; Ficenec; Torres S; W.P. Trower; Ting Chen; E.W. Jenkins; Kwan Wu Lai; LeBritton J; Ying-Chuan Lin; Pifer Ae; H. C. Fenker; D. Green; Albright; J.H. Goldman; S. L. Hagopian; Joseph E. Lannutti; John Piper; Chang Cc; T. C. Davis; R.N. Diamond; K. J. Johnson; J. Poirier; A. Napier; J. Schneps; Marraffino Jm; J. W. Waters; M. Webster; E.G.H. Williams

Physical Review Letters | 1998