$Measurement of b hadron fractions in 13 TeV pp collisions; Physical Review D; Vol. 100, iss. 3$

Measurement of b hadron fractions in 13 TeV pp collisions; Physical Review D; Vol. 100, iss. 3

Chi tiết về thư mục
Parent link:	Physical Review D: particles, fields, gravitation, and cosmology Vol. 100, iss. 3.— 2019.— [031102, 11 p.]
Nhiều tác giả của công ty:	Национальный исследовательский Томский политехнический университет Инженерная школа информационных технологий и робототехники, Национальный исследовательский Томский политехнический университет Исследовательская школа физики высокоэнергетических процессов
Tác giả khác:	Aaij R. Roel, Beteta C. A. Carlos Abellan, Adeva B. Bernardo, Eydelman S. I. Semen Isaakovich, Kharisova A. E. Anastasiya Evgenjevna, Panshin G. L. Gennady Leonidovich, Strokov S. A. Sergey Aleksandrovich
Tóm tắt:	Title screen The production fractions of ¯B0s and Λ0b hadrons, normalized to the sum of B− and ¯B0 fractions, are measured in 13 TeV pp collisions using data collected by the LHCb experiment, corresponding to an integrated luminosity of 1.67 fb−1. These ratios, averaged over the b hadron transverse momenta from 4 to 25 GeV and pseudorapidity from 2 to 5, are 0.122±0.006 for ¯B0s, and 0.259±0.018 for Λ0b, where the uncertainties arise from both statistical and systematic sources. The Λ0b ratio depends strongly on transverse momentum, while the ¯B0s ratio shows a mild dependence. Neither ratio shows variations with pseudorapidity. The measurements are made using semileptonic decays to minimize theoretical uncertainties. In addition, the ratio of D+ to D0 mesons produced in the sum of ¯B0 and B− semileptonic decays is determined as 0.359±0.006±0.009, where the uncertainties are statistical and systematic.
Ngôn ngữ:	Tiếng Anh
Được phát hành:	2019
Những chủ đề:	электронный ресурс труды учёных ТПУ
Truy cập trực tuyến:	http://earchive.tpu.ru/handle/11683/64807 https://doi.org/10.1103/PhysRevD.100.031102
Định dạng:	Điện tử Chương của sách
KOHA link:	https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=663437

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