Inclusive measurement of the photon energy spectrum in b --> sgamma decays.
Inclusive measurement of the photon energy spectrum in b --> sgamma decays.
复制标题
b 中光子能谱的包容性测量 --> sgamma 衰变。
DOI：
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复制
发表时间：
2004
影响因子：
8.6
通讯作者：
D. Žontar
中科院分区：
文献类型：
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作者：
P. Koppenburg;K. Abe;T. Abe;I. Adachi;H. Aihara;M. Akatsu;Y. Asano;V. Aulchenko;T. Aushev;A. Bakich;Y. Ban;A. Bay;U. Bitenc;I. Bizjak;A. Bondar;A. Bozek;M. Bračko;T. Browder;P. Chang;Y. Chao;K.F. Chen;B. Cheon;Y. Choi;A. Chuvikov;S. Cole;M. Danilov;M. Dash;L. Dong;A. Drutskoy;S. Eidelman;V. Eiges;Y. Enari;F. Fang;S. Fratina;N. Gabyshev;A. Garmash;T. Gershon;G. Gokhroo;B. Golob;J. Haba;H. Hayashii;M. Hazumi;T. Higuchi;L. Hinz;T. Hokuue;Y. Hoshi;W. Hou;Y. Hsiung;T. Iijima;K. Inami;A. Ishikawa;R. Itoh;H. Iwasaki;M. Iwasaki;J. Kang;J. Kang;N. Katayama;H. Kawai;T. Kawasaki;H. Kichimi;H. Kim;J. Kim;S. Kim;T. Kim;S. Korpar;P. Križan;P. Krokovny;S. Kumar;A. Kuzmin;Y. Kwon;J. Lange;G. Leder;S. Lee;T. Lesiak;J. Li;A. Limosani;S. Lin;J. Macnaughton;G. Majumder;F. Mandl;T. Matsumoto;Y. Mikami;W. Mitaroff;K. Miyabayashi;H. Miyake;H. Miyata;D. Mohapatra;G. Moloney;Takashi Mori;T. Nagamine;Y. Nagasaka;T. Nakadaira;E. Nakano;M. Nakao;Z. Natkaniec;K. Neichi;S. Nishida;O. Nitoh;T. Nozaki;S. Ogawa;T. Ohshima;T. Okabe;S. Okuno;S. Olsen;W. Ostrowicz;H. Ozaki;P. Pakhlov;H. Palka;C. Park;H. Park;N. Parslow;L. Peak;L. Piilonen;F. Ronga;M. Różańska;H. Sagawa;S. Saitoh;Y. Sakai;T. Sarangi;O. Schneider;C. Schwanda;A. Schwartz;S. Semenov;K. Senyo;R. Seuster;M. Sevior;H. Shibuya;N. Soni;R. Stamen;S. Stanič;M. Starič;T. Sumiyoshi;S. Suzuki;O. Tajima;F. Takasaki;N. Tamura;M. Tanaka;G. Taylor;T. Tomura;K. Trabelsi;T. Tsuboyama;T. Tsukamoto;S. Uehara;T. Uglov;K. Ueno;S. Uno;Y. Ushiroda;G. Varner;K. Varvell;C. Wang;C. H. Wang;M. Watanabe;B. Yabsley;Y. Yamada;A. Yamaguchi;Y. Yamashita;M. Yamauchi;H. Yanai;H. Yang;J. Ying;Y. Yusa;C. Zhang;Z. Zhang;T. Ziegler;D. Žontar
我们报告了在1.8 GeV <或= E*gamma <或= 2.8 GeV的能量范围内对味道变化中性电流衰变B --> sgamma的全面测量，覆盖了总光谱的95%。使用140 fb（-1），我们得到B（B --> sgamma）=（3.55+/-0.32（+0.30+0.11）（-0.31-0.07））× 10（-4），其中误差是统计的、系统的和来自理论校正的。我们还测量了1.8GeV以上的光子能谱的一阶矩和二阶矩，得到（Egamma）= 2.292+/-0.026+/-0.034GeV和（E2 gamma）-（Egamma）2 = 0.0305+/-0.0074+/-0.0063GeV ~2，其中误差是统计的和系统的。
We report a fully inclusive measurement of the flavor changing neutral current decay b --> sgamma in the energy range 1.8 GeV < or = E*gamma < or = 2.8 GeV, covering 95% of the total spectrum. Using 140 fb(-1), we obtain B(b --> sgamma) = (3.55+/-0.32(+0.30+0.11)(-0.31-0.07)) x 10(-4), where the errors are statistical, systematic, and from theory corrections. We also measure the first and second moments of the photon energy spectrum above 1.8 GeV and obtain (Egamma) = 2.292+/-0.026+/-0.034 GeV and (E2gamma) - (Egamma)2 = 0.0305+/-0.0074+/-0.0063 GeV2, where the errors are statistical and systematic.