Measurements of R and A search for heavy-Quark production in e+e- annihilation at s=50 and 52 GeV

H. Sagawa; T. Mori; K. Abe; S. Chakrabarti; Y. Fujii; Y. Higashi; S. Ishimoto; Y. Kurihara; A. Maki; P. Mani; T. Nozaki; T. Omori; P. Perez; Y. Sakai; Y. Sugimoto; Y. Takaiwa; S. Terada; K. Tsuchiya; A. Bacala; R. Imlay; P. Kirk; W. Marterer; R. R. McNeil; W. Metcalf; C. P. Cheng; Z. P. Mao; Y. Yan; Y. T. Xu; H. S. Zhou; Y. C. Zhu; A. Abashian; K. Gotow; F. Kajino; F. Naito; F. Avignone; R. Childers; C. Darden; J. Edwards; S. Lusin; C. Rosenfeld; S. Wilson; D. Johnson; M. Frautschi; H. Kagan; R. Kass; C. G. Trahern; H. Y. Lee; Winston Ko; R. L. Lander; K. Maeshima; R. L. Malchow; D. Saroff; K. Sparks; M. C.S. Williams; A. Aldritch; J. Green; I. H. Park; S. Sakamoto; F. Sannes; S. Schnetzer; R. Stone; S. Trentalange; D. Zimmerman; K. Miyano; H. Miyata; M. Ogawa; Y. Yamashita; D. Blanis; A. Bodek; H. Budd; R. Coombes; S. Eno; C. A. Fry; H. Harada; Y. H. Ho; Y. K. Kim; T. Kumita; S. L. Olsen; R. Poling; N. M. Shaw; A. Sill; E. H. Thorndike; K. Ueno; H. W. Zheng; H. Asakura; K. Eguchi; H. Itoh; S. Kobayashi; A. Murakami; K. Toyoshima; J. S. Kang; H. J. Kim; S. K. Kim; S. S. Myung; E. J. Kim; G. N. Kim; D. Son; H. Kozuka; S. Matsumoto; H. Otsuki; T. Sasaki; T. Takeda; R. Tanaka; R. Chiba; K. Hanaoka; S. Igarashi; M. Miyashita; H. Murata; H. Yokota; Y. Ishi; T. Ishizuka; T. Maruta; K. Ohta

doi:10.1103/PhysRevLett.60.93

Measurements of R and A search for heavy-Quark production in e+e- annihilation at s=50 and 52 GeV

H. Sagawa, T. Mori, K. Abe, S. Chakrabarti, Y. Fujii, Y. Higashi, S. Ishimoto, Y. Kurihara, A. Maki, P. Mani, T. Nozaki, T. Omori, P. Perez, Y. Sakai, Y. Sugimoto, Y. Takaiwa, S. Terada, K. Tsuchiya, A. Bacala, R. ImlayP. Kirk, W. Marterer, R. R. McNeil, W. Metcalf, C. P. Cheng, Z. P. Mao, Y. Yan, Y. T. Xu, H. S. Zhou, Y. C. Zhu, A. Abashian, K. Gotow, F. Kajino, F. Naito, F. Avignone, R. Childers, C. Darden, J. Edwards, S. Lusin, C. Rosenfeld, S. Wilson, D. Johnson, M. Frautschi, H. Kagan, R. Kass, C. G. Trahern, H. Y. Lee, Winston Ko, R. L. Lander, K. Maeshima, R. L. Malchow, D. Saroff, K. Sparks, M. C.S. Williams, A. Aldritch, J. Green, I. H. Park, S. Sakamoto, F. Sannes, S. Schnetzer, R. Stone, S. Trentalange, D. Zimmerman, K. Miyano, H. Miyata, M. Ogawa, Y. Yamashita, D. Blanis, A. Bodek, H. Budd, R. Coombes, S. Eno, C. A. Fry, H. Harada, Y. H. Ho, Y. K. Kim, T. Kumita, S. L. Olsen, R. Poling, N. M. Shaw, A. Sill, E. H. Thorndike, K. Ueno, H. W. Zheng, H. Asakura, K. Eguchi, H. Itoh, S. Kobayashi, A. Murakami, K. Toyoshima, J. S. Kang, H. J. Kim, S. K. Kim, S. S. Myung, E. J. Kim, G. N. Kim, D. Son, H. Kozuka, S. Matsumoto, H. Otsuki, T. Sasaki, T. Takeda, R. Tanaka, R. Chiba, K. Hanaoka, S. Igarashi, M. Miyashita, H. Murata, H. Yokota, Y. Ishi, T. Ishizuka, T. Maruta, K. Ohta

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Abstract

The ratio R of the cross section for e+e- annihilation into hadronic final states to the QED cross section for muon-pair production is measured to be 4.340.450.30 and 4.230.200.21 at c.m. energies of 50 and 52 GeV, respectively. From these values of R and an analysis of the event shapes we deduce a 95%-confidence-level upper limit for the production rate of new heavy charge +23e or -13e quarks to be 0.19 units of R.

Original language	English
Pages (from-to)	93-96
Number of pages	4
Journal	Physical Review Letters
Volume	60
Issue number	2
DOIs	https://doi.org/10.1103/PhysRevLett.60.93
State	Published - 1988

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10.1103/PhysRevLett.60.93

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Sagawa, H., Mori, T., Abe, K., Chakrabarti, S., Fujii, Y., Higashi, Y., Ishimoto, S., Kurihara, Y., Maki, A., Mani, P., Nozaki, T., Omori, T., Perez, P., Sakai, Y., Sugimoto, Y., Takaiwa, Y., Terada, S., Tsuchiya, K., Bacala, A., ... Ohta, K. (1988). Measurements of R and A search for heavy-Quark production in e+e- annihilation at s=50 and 52 GeV. Physical Review Letters, 60(2), 93-96. https://doi.org/10.1103/PhysRevLett.60.93

@article{bf3012757f2f405aae8634e6875afb44,

title = "Measurements of R and A search for heavy-Quark production in e+e- annihilation at s=50 and 52 GeV",

abstract = "The ratio R of the cross section for e+e- annihilation into hadronic final states to the QED cross section for muon-pair production is measured to be 4.340.450.30 and 4.230.200.21 at c.m. energies of 50 and 52 GeV, respectively. From these values of R and an analysis of the event shapes we deduce a 95%-confidence-level upper limit for the production rate of new heavy charge +23e or -13e quarks to be 0.19 units of R.",

author = "H. Sagawa and T. Mori and K. Abe and S. Chakrabarti and Y. Fujii and Y. Higashi and S. Ishimoto and Y. Kurihara and A. Maki and P. Mani and T. Nozaki and T. Omori and P. Perez and Y. Sakai and Y. Sugimoto and Y. Takaiwa and S. Terada and K. Tsuchiya and A. Bacala and R. Imlay and P. Kirk and W. Marterer and McNeil, {R. R.} and W. Metcalf and Cheng, {C. P.} and Mao, {Z. P.} and Y. Yan and Xu, {Y. T.} and Zhou, {H. S.} and Zhu, {Y. C.} and A. Abashian and K. Gotow and F. Kajino and F. Naito and F. Avignone and R. Childers and C. Darden and J. Edwards and S. Lusin and C. Rosenfeld and S. Wilson and D. Johnson and M. Frautschi and H. Kagan and R. Kass and Trahern, {C. G.} and Lee, {H. Y.} and Winston Ko and Lander, {R. L.} and K. Maeshima and Malchow, {R. L.} and D. Saroff and K. Sparks and Williams, {M. C.S.} and A. Aldritch and J. Green and Park, {I. H.} and S. Sakamoto and F. Sannes and S. Schnetzer and R. Stone and S. Trentalange and D. Zimmerman and K. Miyano and H. Miyata and M. Ogawa and Y. Yamashita and D. Blanis and A. Bodek and H. Budd and R. Coombes and S. Eno and Fry, {C. A.} and H. Harada and Ho, {Y. H.} and Kim, {Y. K.} and T. Kumita and Olsen, {S. L.} and R. Poling and Shaw, {N. M.} and A. Sill and Thorndike, {E. H.} and K. Ueno and Zheng, {H. W.} and H. Asakura and K. Eguchi and H. Itoh and S. Kobayashi and A. Murakami and K. Toyoshima and Kang, {J. S.} and Kim, {H. J.} and Kim, {S. K.} and Myung, {S. S.} and Kim, {E. J.} and Kim, {G. N.} and D. Son and H. Kozuka and S. Matsumoto and H. Otsuki and T. Sasaki and T. Takeda and R. Tanaka and R. Chiba and K. Hanaoka and S. Igarashi and M. Miyashita and H. Murata and H. Yokota and Y. Ishi and T. Ishizuka and T. Maruta and K. Ohta",

year = "1988",

doi = "10.1103/PhysRevLett.60.93",

language = "English",

volume = "60",

pages = "93--96",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "2",

}

Sagawa, H, Mori, T, Abe, K, Chakrabarti, S, Fujii, Y, Higashi, Y, Ishimoto, S, Kurihara, Y, Maki, A, Mani, P, Nozaki, T, Omori, T, Perez, P, Sakai, Y, Sugimoto, Y, Takaiwa, Y, Terada, S, Tsuchiya, K, Bacala, A, Imlay, R, Kirk, P, Marterer, W, McNeil, RR, Metcalf, W, Cheng, CP, Mao, ZP, Yan, Y, Xu, YT, Zhou, HS, Zhu, YC, Abashian, A, Gotow, K, Kajino, F, Naito, F, Avignone, F, Childers, R, Darden, C, Edwards, J, Lusin, S, Rosenfeld, C, Wilson, S, Johnson, D, Frautschi, M, Kagan, H, Kass, R, Trahern, CG, Lee, HY, Ko, W, Lander, RL, Maeshima, K, Malchow, RL, Saroff, D, Sparks, K, Williams, MCS, Aldritch, A, Green, J, Park, IH, Sakamoto, S, Sannes, F, Schnetzer, S, Stone, R, Trentalange, S, Zimmerman, D, Miyano, K, Miyata, H, Ogawa, M, Yamashita, Y, Blanis, D, Bodek, A, Budd, H, Coombes, R, Eno, S, Fry, CA, Harada, H, Ho, YH, Kim, YK, Kumita, T, Olsen, SL, Poling, R, Shaw, NM, Sill, A, Thorndike, EH, Ueno, K, Zheng, HW, Asakura, H, Eguchi, K, Itoh, H, Kobayashi, S, Murakami, A, Toyoshima, K, Kang, JS, Kim, HJ, Kim, SK, Myung, SS, Kim, EJ, Kim, GN, Son, D, Kozuka, H, Matsumoto, S, Otsuki, H, Sasaki, T, Takeda, T, Tanaka, R, Chiba, R, Hanaoka, K, Igarashi, S, Miyashita, M, Murata, H, Yokota, H, Ishi, Y, Ishizuka, T, Maruta, T & Ohta, K 1988, 'Measurements of R and A search for heavy-Quark production in e+e- annihilation at s=50 and 52 GeV', Physical Review Letters, vol. 60, no. 2, pp. 93-96. https://doi.org/10.1103/PhysRevLett.60.93

TY - JOUR

T1 - Measurements of R and A search for heavy-Quark production in e+e- annihilation at s=50 and 52 GeV

AU - Sagawa, H.

AU - Mori, T.

AU - Abe, K.

AU - Chakrabarti, S.

AU - Fujii, Y.

AU - Higashi, Y.

AU - Ishimoto, S.

AU - Kurihara, Y.

AU - Maki, A.

AU - Mani, P.

AU - Nozaki, T.

AU - Omori, T.

AU - Perez, P.

AU - Sakai, Y.

AU - Sugimoto, Y.

AU - Takaiwa, Y.

AU - Terada, S.

AU - Tsuchiya, K.

AU - Bacala, A.

AU - Imlay, R.

AU - Kirk, P.

AU - Marterer, W.

AU - McNeil, R. R.

AU - Metcalf, W.

AU - Cheng, C. P.

AU - Mao, Z. P.

AU - Yan, Y.

AU - Xu, Y. T.

AU - Zhou, H. S.

AU - Zhu, Y. C.

AU - Abashian, A.

AU - Gotow, K.

AU - Kajino, F.

AU - Naito, F.

AU - Avignone, F.

AU - Childers, R.

AU - Darden, C.

AU - Edwards, J.

AU - Lusin, S.

AU - Rosenfeld, C.

AU - Wilson, S.

AU - Johnson, D.

AU - Frautschi, M.

AU - Kagan, H.

AU - Kass, R.

AU - Trahern, C. G.

AU - Lee, H. Y.

AU - Ko, Winston

AU - Lander, R. L.

AU - Maeshima, K.

AU - Malchow, R. L.

AU - Saroff, D.

AU - Sparks, K.

AU - Williams, M. C.S.

AU - Aldritch, A.

AU - Green, J.

AU - Park, I. H.

AU - Sakamoto, S.

AU - Sannes, F.

AU - Schnetzer, S.

AU - Stone, R.

AU - Trentalange, S.

AU - Zimmerman, D.

AU - Miyano, K.

AU - Miyata, H.

AU - Ogawa, M.

AU - Yamashita, Y.

AU - Blanis, D.

AU - Bodek, A.

AU - Budd, H.

AU - Coombes, R.

AU - Eno, S.

AU - Fry, C. A.

AU - Harada, H.

AU - Ho, Y. H.

AU - Kim, Y. K.

AU - Kumita, T.

AU - Olsen, S. L.

AU - Poling, R.

AU - Shaw, N. M.

AU - Sill, A.

AU - Thorndike, E. H.

AU - Ueno, K.

AU - Zheng, H. W.

AU - Asakura, H.

AU - Eguchi, K.

AU - Itoh, H.

AU - Kobayashi, S.

AU - Murakami, A.

AU - Toyoshima, K.

AU - Kang, J. S.

AU - Kim, H. J.

AU - Kim, S. K.

AU - Myung, S. S.

AU - Kim, E. J.

AU - Kim, G. N.

AU - Son, D.

AU - Kozuka, H.

AU - Matsumoto, S.

AU - Otsuki, H.

AU - Sasaki, T.

AU - Takeda, T.

AU - Tanaka, R.

AU - Chiba, R.

AU - Hanaoka, K.

AU - Igarashi, S.

AU - Miyashita, M.

AU - Murata, H.

AU - Yokota, H.

AU - Ishi, Y.

AU - Ishizuka, T.

AU - Maruta, T.

AU - Ohta, K.

PY - 1988

Y1 - 1988

N2 - The ratio R of the cross section for e+e- annihilation into hadronic final states to the QED cross section for muon-pair production is measured to be 4.340.450.30 and 4.230.200.21 at c.m. energies of 50 and 52 GeV, respectively. From these values of R and an analysis of the event shapes we deduce a 95%-confidence-level upper limit for the production rate of new heavy charge +23e or -13e quarks to be 0.19 units of R.

AB - The ratio R of the cross section for e+e- annihilation into hadronic final states to the QED cross section for muon-pair production is measured to be 4.340.450.30 and 4.230.200.21 at c.m. energies of 50 and 52 GeV, respectively. From these values of R and an analysis of the event shapes we deduce a 95%-confidence-level upper limit for the production rate of new heavy charge +23e or -13e quarks to be 0.19 units of R.

UR - http://www.scopus.com/inward/record.url?scp=25544450048&partnerID=8YFLogxK

U2 - 10.1103/PhysRevLett.60.93

DO - 10.1103/PhysRevLett.60.93

M3 - Article

AN - SCOPUS:25544450048

SN - 0031-9007

VL - 60

SP - 93

EP - 96

JO - Physical Review Letters

JF - Physical Review Letters

IS - 2

ER -

Measurements of R and A search for heavy-Quark production in e+e- annihilation at s=50 and 52 GeV

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