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1. Extreme events generated in microcavity lasers and their predictions by reservoir computing

Author

Wang, T., Zhou, H. X., Fang, Q., Han, Y. N., Guo, X. X., Zhang, Y. H., Qian, C., Chen, H. S., Barland, S., Xiang, S. Y., and Lippi, G. L.

Subjects
Physics - Optics
Abstract

Extreme events generated by complex systems have been intensively studied in many fields due to their great impact on scientific research and our daily lives. However, their prediction is still a challenge in spite of the tremendous progress that model-free machine learning has brought to the field. We experimentally generate, and theoretically model, extreme events in a current-modulated, single-mode microcavity laser operating on orthogonal polarizations, where their strongly differing thresholds -- due to cavity birefringence -- give rise to giant light pulses initiated by spontaneous emission. Applying reservoir-computing techniques, we identify in advance the emergence of an extreme event from a time series, in spite of coarse sampling and limited sample length. Performance is optimized through new hybrid configurations that we introduce in this paper. Advance warning times can reach 5ns, i.e. approximately ten times the rise time of the individual extreme event.

Published
2023

2. The Second Monocular Depth Estimation Challenge

Author

Spencer, Jaime, Qian, C. Stella, Trescakova, Michaela, Russell, Chris, Hadfield, Simon, Graf, Erich W., Adams, Wendy J., Schofield, Andrew J., Elder, James, Bowden, Richard, Anwar, Ali, Chen, Hao, Chen, Xiaozhi, Cheng, Kai, Dai, Yuchao, Hoa, Huynh Thai, Hossain, Sadat, Huang, Jianmian, Jing, Mohan, Li, Bo, Li, Chao, Li, Baojun, Liu, Zhiwen, Mattoccia, Stefano, Mercelis, Siegfried, Nam, Myungwoo, Poggi, Matteo, Qi, Xiaohua, Ren, Jiahui, Tang, Yang, Tosi, Fabio, Trinh, Linh, Uddin, S. M. Nadim, Umair, Khan Muhammad, Wang, Kaixuan, Wang, Yufei, Wang, Yixing, Xiang, Mochu, Xu, Guangkai, Yin, Wei, Yu, Jun, Zhang, Qi, and Zhao, Chaoqiang

Subjects
Computer Science - Computer Vision and Pattern Recognition, Computer Science - Artificial Intelligence
Abstract

This paper discusses the results for the second edition of the Monocular Depth Estimation Challenge (MDEC). This edition was open to methods using any form of supervision, including fully-supervised, self-supervised, multi-task or proxy depth. The challenge was based around the SYNS-Patches dataset, which features a wide diversity of environments with high-quality dense ground-truth. This includes complex natural environments, e.g. forests or fields, which are greatly underrepresented in current benchmarks. The challenge received eight unique submissions that outperformed the provided SotA baseline on any of the pointcloud- or image-based metrics. The top supervised submission improved relative F-Score by 27.62%, while the top self-supervised improved it by 16.61%. Supervised submissions generally leveraged large collections of datasets to improve data diversity. Self-supervised submissions instead updated the network architecture and pretrained backbones. These results represent a significant progress in the field, while highlighting avenues for future research, such as reducing interpolation artifacts at depth boundaries, improving self-supervised indoor performance and overall natural image accuracy., Comment: Published at CVPRW2023

Published
2023

3. Different Contributions of embB and ubiA Mutations to Variable Level of Ethambutol Resistance in Mycobacterium tuberculosis Isolates

Author

Nan XT, Li MC, Xiao TY, Liu HC, Lin SQ, Wang W, Qian C, Hang H, Li GL, Zhao XQ, Wan KL, and Zhao LL

Subjects
ethambutol, multidrug-resistant tuberculosis, embb, ubia, mutations, minimum inhibitory concentration, Infectious and parasitic diseases, RC109-216
Abstract

Xiao-tian Nan,1,* Ma-chao Li,1,* Tong-yang Xiao,2,* Hai-can Liu,1,* Shi-qiang Lin,3 Wei Wang,1 Cheng Qian,4 Hao Hang,1 Gui-lian Li,1 Xiu-qin Zhao,1 Kang-Lin Wan,1 Li-li Zhao1 1National Key Laboratory of Intelligent Tracking and Forecasting for Infectious Diseases, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, 102206, People’s Republic of China; 2Department of Clinical Laboratory, The Fifth Affiliated Hospital of Sun Yat-Sen University, Zhuhai, Guangdong, People’s Republic of China; 3College of Life Science, Fujian Agriculture and Forestry University, Fuzhou, 350002, People’s Republic of China; 4Beijing Center for Disease Control and Prevention, Beijing, 100013, People’s Republic of China*These authors contributed equally to this workCorrespondence: Li-li Zhao, Email zhaolili@icdc.cnObjective: To explore the association between the variant mutations within embB and ubiA, and the degree of ethambutol (EMB) resistance of Mycobacterium tuberculosis (M. tuberculosis) isolates.Methods: A total of 146 M. tuberculosis isolates were used to determine the minimum inhibitory concentrations (MICs) of EMB with a 96-well microplate-based assay. The mutations within embB and ubiA among these isolates were identified with DNA sequencing. Moreover, a multivariate regression model and a computer model were established to assess the effects of mutations on EMB resistance.Results: Our data showed that overall 100 isolates exhibited 28 mutated patterns within the sequenced embB and ubiA. Statistical analysis indicated that embB mutations Met306Val, Met306Ile, Gly406Ala, and Gln497Arg, were strongly associated with EMB resistance. Of these mutations, Met306Val and Gln497Arg were significantly associated with high-level EMB resistance. Almost all multiple mutations occurred in high-level EMB-resistant isolates. Although the mutation within ubiA accompanied with embB mutation presented exclusively in EMB-resistant isolates, four single ubiA mutations (Ala39Glu, Ser173Ala, Trp175Cys, and Val283Leu) leading to protein instability were observed in EMB-susceptible isolates.Conclusion: This study highlighted the complexity of EMB resistance. Some individual mutations and multiple mutations within embB and ubiA contributed to the different levels of EMB resistance.Keywords: ethambutol, multidrug-resistant tuberculosis, embB, ubiA, mutations, minimum inhibitory concentration

Published
2024

4. Drug-Resistant Characteristics, Genetic Diversity, and Transmission Dynamics of Multidrug-Resistant Mycobacterium tuberculosis in Jiangxi, China

Author

Zhao J, Qian C, Jiang Y, He W, and Wu W

Subjects
mycobacterium tuberculosis, drug resistant, whole genome sequencing, genetic diversity, transmission dynamics, Infectious and parasitic diseases, RC109-216
Abstract

Jingnan Zhao,1 Chengyu Qian,2 Youqiao Jiang,1,3 Wangrui He,1 Wenhua Wu1 1Tuberculosis Control Department, Jiangxi Provincial Center for Disease Control and Prevention, Nanchang, 330029, People’s Republic of China; 2Beijing Tuberculosis and Thoracic Tumor Research Institute, Beijing Chest Hospital, Capital Medical University, Beijing, 101149, People’s Republic of China; 3Young Scientific Research and Innovation Team, Jiangxi Provincial Center for Disease Control and Prevention, Nanchang, Jiangxi, 330029, People’s Republic of ChinaCorrespondence: Wangrui He, Tuberculosis Control Department, Jiangxi Provincial Center for Disease Control and Prevention, No. 555, Beijing East Road, Nanchang, Jiangxi, 330029, People’s Republic of China, Email jxcdccbs@126.comPurpose: In this study, we aimed to determine the transmission pattern of multidrug-resistant tuberculosis (MDR-TB) isolates circulating in Jiangxi Province with whole-genome sequencing (WGS). In addition, we also sought to describe mutational resistome of MDR-TB isolates.Patients and Methods: A total of 115 MDR-TB isolates determined by the phenotypic proportion method of drug susceptibility testing between January 2018 and December 2022 from provincial drug surveillance (DRS) in Jiangxi were included in our analysis. The demographic data and treatment history were extracted from the National TB Registry System. WGS was used to analyze the genotypic characteristics of drug resistance and transmissions.Results: About 62.6% of MDR-TB strains were isolated from cases that received previous anti-tuberculosis treatment. According to the WGS results, 96.5% were genotypic MDR-TB, and more than half of MDR-TB isolates tested were also resistant to streptomycin (59.1%), ethambutol (56.5%), and fluroquinolones (53.0%), while resistance to cycloserine and linezolid was lowest, only in two (1.7%) and one (0.9%) isolate, respectively. Ser450Leu in rpoB (57.9%), Ser315Thr in katG (74.1%), Met306Val in embB (40.0%), Lys43Arg in rpsL (75.0%), Ala90Val in gyrA (32.8%) were predominant mutant types among the rifampin-, isoniazid-, ethambutol-, streptomycin-, fluoroquinolones-resistant isolates, respectively. Lineage 2 (East Asian genotype) occurred at the highest frequency with 97 cases (84.3%), followed by lineage 4 (Euro-American genotype) with 18 cases (15.7%). Additionally, 5 clusters consisting of 10 isolates were identified in the present study, demonstrating a clustering rate of 8.7%.Conclusion: MDR/Rifampicin-Resistant (RR)-TB epidemic in this region is driven by lineage 2 clade that also show higher resistance to other anti-tuberculosis drugs. Lower cluster rates compared with a relatively higher proportion of new MDR-TB cases indicate that a considerable number of MDR-TB cases remain undiagnosed.Keywords: Mycobacterium tuberculosis, drug resistant, whole-genome sequencing, genetic diversity, transmission dynamics

Published
2024

5. The Monocular Depth Estimation Challenge

Author

Spencer, Jaime, Qian, C. Stella, Russell, Chris, Hadfield, Simon, Graf, Erich, Adams, Wendy, Schofield, Andrew J., Elder, James, Bowden, Richard, Cong, Heng, Mattoccia, Stefano, Poggi, Matteo, Suri, Zeeshan Khan, Tang, Yang, Tosi, Fabio, Wang, Hao, Zhang, Youmin, Zhang, Yusheng, and Zhao, Chaoqiang

Subjects
Computer Science - Computer Vision and Pattern Recognition
Abstract

This paper summarizes the results of the first Monocular Depth Estimation Challenge (MDEC) organized at WACV2023. This challenge evaluated the progress of self-supervised monocular depth estimation on the challenging SYNS-Patches dataset. The challenge was organized on CodaLab and received submissions from 4 valid teams. Participants were provided a devkit containing updated reference implementations for 16 State-of-the-Art algorithms and 4 novel techniques. The threshold for acceptance for novel techniques was to outperform every one of the 16 SotA baselines. All participants outperformed the baseline in traditional metrics such as MAE or AbsRel. However, pointcloud reconstruction metrics were challenging to improve upon. We found predictions were characterized by interpolation artefacts at object boundaries and errors in relative object positioning. We hope this challenge is a valuable contribution to the community and encourage authors to participate in future editions., Comment: WACV-Workshops 2023

Published
2022

8. Prognostic Value of Combined LMR and CEA Dynamic Monitoring in Postoperative Colorectal Cancer Patients

Author

Chen S, Zhang J, Qian C, Qi X, Mao Y, and Lu T

Subjects
colorectal cancer, postoperative recurrence, predictive model, inflammatory markers., Pathology, RB1-214, Therapeutics. Pharmacology, RM1-950
Abstract

Shan Chen,1 Jie Zhang,1 Chengjia Qian,2 Xiaowei Qi,3 Yong Mao,1 Tingxun Lu1 1Department of Oncology, Affiliated Hospital of Jiangnan University, Wuxi, Jiangsu Province, 214122, People’s Republic of China; 2Department of Gastrointestinal Surgery, Affiliated Hospital of Jiangnan University, Wuxi, Jiangsu Province, 214122, People’s Republic of China; 3Department of Pathology, Affiliated Hospital of Jiangnan University, Wuxi, Jiangsu Province, 214122, People’s Republic of ChinaCorrespondence: Tingxun Lu, Department of Oncology, Affiliated Hospital of Jiangnan University, 1000, Hefeng Road, Wuxi, 214122, Jiangsu, People’s Republic of China, Email lutingxun@163.comPurpose: We aim to investigate the clinical significance of dynamic changes in the lymphocyte-to-monocyte ratio (LMR) and neutrophil-lymphocyte ratio (NLR) in peripheral blood at different time points combined with CEA in the prediction of postoperative-recurrence-in-patients with colorectal cancer (CRC).Patients and Methods: This study collected 357 patients with stage I–III CRC between 2016 and April 2018. The dynamic changes from preoperative to postoperative LMR (p-LMR-p) and NLR (p-NLR-p) were analyzed using COX regression for multivariate analysis. Logistic regression was used to investigate whether the dynamic changes from post-treatment to pre-end of follow-up LMR (p-LMR-f) and NLR (p-NLR-f) were independent risk factors for CRC recurrence and to construct a predictive model. Internal validation using bootstrapping was performed to validate the discrimination ability of the model. The models’ discriminative effect, calibration degree, and clinical utility were assessed.Results: In both the total cohort and the adjuvant therapy group, the dynamic changes of p-LMR-p (High-High vs Low-Low: p=0.006; HR:2.210, 95% CI: 1.256– 3.890) were found to be independent prognostic factors for recurrence-free survival (RFS) in CRC patients. Additionally, logistic regression analysis revealed that N stage, CEA, LMR of pre-end of follow-up (f-LMR), and p-LMR-f were independent risk factors for CRC recurrence. In the total cohort, the p-LMR-f had an area under the curve (AUC) of 0.704, with a sensitivity of 64% and a specificity of 75.3%. By combining p-LMR-f with CEA, a predictive model was constructed, which showed an AUC of 0.913 (0.986– 0.913) in the total cohort and an AUC of 0.924 (0.902– 0.924) in the adjuvant therapy group during internal validation using bootstrapping.Conclusion: Dynamic changes in LMR can be used to predict the prognosis of CRC and serve as a biomarker for predicting CRC recurrence. Combined with CEA, it can improve the predictive performance for detecting CRC recurrence.Keywords: colorectal cancer, postoperative recurrence, predictive model, inflammatory markers

Published
2023

11. Genetic Characterization Conferred Co-Resistance to Isoniazid and Ethionamide in Mycobacterium tuberculosis Isolates from Southern Xinjiang, China

Author

Cao B, Mijiti X, Deng LL, Wang Q, Yu JJ, Anwaierjiang A, Qian C, Li M, Fang DA, Jiang Y, Zhao LL, Zhao X, Wan K, Liu H, Li G, and Yuan X

Subjects
cross-resistance, ethionamide, isoniazid, mutation, mycobacterium tuberculosis, Infectious and parasitic diseases, RC109-216
Abstract

Bin Cao,1,2,* Xiaokaiti Mijiti,3,* Le-Le Deng,2,4 Quan Wang,3 Jin-Jie Yu,1,2 Aiketaguli Anwaierjiang,5 Chengyu Qian,2,6 Machao Li,2 Dan-Ang Fang,2,6 Yi Jiang,2 Li-Li Zhao,2 Xiuqin Zhao,2 Kanglin Wan,2 Haican Liu,2 Guilian Li,2 Xiuqin Yuan1 1School of Public Health, University of South China, Hengyang, 421001, People’s Republic of China; 2State Key Laboratory for Infectious Disease Prevention and Control, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, 102206, People’s Republic of China; 3The Eighth Affiliated Hospital of Xinjiang Medical University, Urumqi, 830000, People’s Republic of China; 4National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, People’s Republic of China; 5College of Xinjiang Uyghur Medicine, Hetian, 848000, People’s Republic of China; 6Wenzhou Key Laboratory of Sanitary Microbiology, Key Laboratory of Laboratory Medicine, Ministry of Education, China, School of Laboratory Medicine and Life Sciences, Wenzhou Medical University, Wenzhou, Zhejiang, 325035, People’s Republic of China*These authors contributed equally to this workCorrespondence: Xiuqin Yuan; Guilian Li, Email wtjysh@126.com; liguilian@icdc.cnBackground: Ethionamide (ETH), a structural analogue of isoniazid (INH), is used for treating multidrug-resistant tuberculosis (MDR-TB). Due to the common target InhA, INH and ETH showed cross-resistance in M. tuberculosis. This study aimed to explore the INH and ETH resistant profiles and genetic mutations conferring independent INH- or ETH-resistance and INH-ETH cross-resistance in M. tuberculosis circulating in south of Xinjiang, China.Methods: From Sep 2017 to Dec 2018, 312 isolates were included using drug susceptibility testing (DST), spoligotyping, and whole genome sequencing (WGS) to analyze the resistance characteristics for INH and/or ETH.Results: Among the 312 isolates, 185 (58.3%) and 127 (40.7%) belonged to the Beijing family and non-Beijing family, respectively; 90 (28.9%) were INH-resistant (INHR) with mutation rates of 74.4% in katG, 13.3% in inhA and its promoter, 11.1% in ahpC and its upstream region, 2.2% in ndh, 0.0% in mshA, whilst 34 (10.9%) were ETH-resistant (ETHR) with mutation rates of 38.2% in ethA, 26.2% in inhA and its promoter, and 5.9% in ndh, 0.0% in ethR or mshA; and 25 (8.0%) were INH-ETH co-resistant (INHRETHR) with mutation rates of 40.0% in inhA and its promoter, and 8% in ndh. katG mutants tended to display high-level resistant to INH; and more inhA and its promoter mutants showed low-level of INH and ETH resistance. The optimal gene combinations by WGS for the prediction of INHR, ETHR, and INHRETHR were, respectively, katG+inhA and its promoter (sensitivity: 81.11%, specificity: 90.54%), ethA+inhA and its promoter+ndh (sensitivity: 61.76%, specificity: 76.62%), and inhA and its promoter+ndh (sensitivity: 48.00%, specificity: 97.65%).Conclusion: This study revealed the high diversity of genetic mutations conferring INH and/or ETH resistance among M. tuberculosis isolates, which would facilitate the study on INHR and/or ETHR mechanisms and provide clues for choosing ETH for MDR treatment and molecular DST methods in south of Xinjiang, China.Keywords: cross-resistance, ethionamide, isoniazid, mutation, Mycobacterium tuberculosis

Published
2023

12. The Pencil Code, a modular MPI code for partial differential equations and particles: multipurpose and multiuser-maintained

Author

Brandenburg, A., Johansen, A., Bourdin, P. A., Dobler, W., Lyra, W., Rheinhardt, M., Bingert, S., Haugen, N. E. L., Mee, A., Gent, F., Babkovskaia, N., Yang, C. -C., Heinemann, T., Dintrans, B., Mitra, D., Candelaresi, S., Warnecke, J., Käpylä, P. J., Schreiber, A., Chatterjee, P., Käpylä, M. J., Li, X. -Y., Krüger, J., Aarnes, J. R., Sarson, G. R., Oishi, J. S., Schober, J., Plasson, R., Sandin, C., Karchniwy, E., Rodrigues, L. F. S., Hubbard, A., Guerrero, G., Snodin, A., Losada, I. R., Pekkilä, J., and Qian, C.

Subjects
Astrophysics - Instrumentation and Methods for Astrophysics, Astrophysics - Cosmology and Nongalactic Astrophysics, Astrophysics - Solar and Stellar Astrophysics, Physics - Fluid Dynamics
Abstract

The Pencil Code is a highly modular physics-oriented simulation code that can be adapted to a wide range of applications. It is primarily designed to solve partial differential equations (PDEs) of compressible hydrodynamics and has lots of add-ons ranging from astrophysical magnetohydrodynamics (MHD) to meteorological cloud microphysics and engineering applications in combustion. Nevertheless, the framework is general and can also be applied to situations not related to hydrodynamics or even PDEs, for example when just the message passing interface or input/output strategies of the code are to be used. The code can also evolve Lagrangian (inertial and noninertial) particles, their coagulation and condensation, as well as their interaction with the fluid., Comment: 7 pages, submitted to the Journal for Open Source Software (JOSS)

Published
2020
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17. Erratum: Structural characterization of a polycrystalline epitaxially-fused colloidal quantum dot superlattice by electron tomography (Journal of Materials Chemistry A (2020) DOI: 10.1039/d0ta06704k)

Author

Chu, X, Heidari, H, Abelson, A, Unruh, D, Hansen, C, Qian, C, Zimanyi, G, Law, M, and Moulé, AJ

Subjects
Macromolecular and Materials Chemistry, Materials Engineering, Interdisciplinary Engineering
Abstract

The authors regret the following minor errors in the published article: In Section 2.1 (Materials), two chemicals, lead iodide and ethanol, were accidentally omitted from the list. The revised text should read:

Published
2020

18. Structural characterization of a polycrystalline epitaxially-fused colloidal quantum dot superlattice by electron tomography

Author

Chu, X, Heidari, H, Abelson, A, Unruh, D, Hansen, C, Qian, C, Zimanyi, G, Law, M, and Moulé, AJ

Subjects
Macromolecular and Materials Chemistry, Materials Engineering, Interdisciplinary Engineering
Abstract

Three dimensional epitaxially-fused colloidal quantum dot (QD) superlattices (epi-SLs) feature exceptional electronic coupling and spatial order and are promising systems for studying the emergence of delocalized states and mini-band charge transport in self-assembled solids. However, energy disorder arising from structural defects and aperiodicity has so far resulted in charge carrier localization and slow hopping transport. Detailed 3D structural characterization is critical for rationally improving epi-SL structural perfection to trigger the formation of mini-bands. Here, we analyze the 3D structure of a 120 × 38 nm disc-shaped region of a PbSe QD epi-SL using full-tilt high-angle annular dark-field electron tomography. The high spatial resolution of the tomographic reconstruction (0.65 nm) enables determination of the center-of-mass coordinates of all 1846 QDs in the sample as well as the size and shape of the thousands of epitaxial connections (necks) between the QDs. The tomogram reveals the detailed crystallography and internal positional disorder of the three SL grains that constitute this sample. A map of the neck network is used to quantify relationships between neck number (the number of necks each QD possesses), average neck diameter, QD location in the film, and the nearest neighbor inter-QD distance and distance distribution. We find a strong positive correlation between neck number and local spatial order, suggesting that future improvements in neck connectivity are likely to simultaneously enhance the overall structural perfection of the epi-SLs. A kinetic Monte Carlo model is employed to estimate the electron mobility of the tomography sample and assess the impact of grain boundaries on charge transport. Our electron tomography study establishes a baseline for the quantitative statistical analysis of structural defects in 3D QD epi-SLs.

Published
2020

19. A Visualized Mortality Prediction Score Model in Hematological Malignancies Patients with Carbapenem-Resistant Organisms Bloodstream Infection

Author

Qian C, Wu Q, Ruan Z, Liu F, Li W, Shi W, Ma L, Peng D, Yin H, Yao L, Li Z, Hong M, and Xia L

Subjects
carbapenem-resistant organisms, predictive model, nomogram, hematological malignancies, bloodstream infection, Infectious and parasitic diseases, RC109-216
Abstract

Chenjing Qian,1,* Qiuling Wu,1,* Zhixuan Ruan,2 Fang Liu,1 Weiming Li,1 Wei Shi,1 Ling Ma,3 Danyue Peng,1 Hua Yin,1 Lan Yao,1 Zixuan Li,1 Mei Hong,1,4 Linghui Xia1 1Institute of Hematology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, 430022, People’s Republic of China; 2Faculty of Natural, Mathematical and Engineering Sciences, King’s College, London, UK; 3Department of Clinical Laboratory, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People’s Republic of China; 4Collaborative Innovation Center of Hematology, Soochow University, Suzhou, People’s Republic of China*These authors contributed equally to this workCorrespondence: Mei Hong; Linghui Xia, Institute of Hematology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Jiefang Road No. 1277, Wuhan, Hubei Province, People’s Republic of China, Tel +8613037137937 ; +8618627733999, Email hmxh@hust.edu.cn; linghuixia@hust.edu.cnBackground: Bloodstream infection (BSI) due to carbapenem-resistant organisms (CROs) has emerged as a worldwide problem associated with high mortality. This study aimed to evaluate the risk factors associated with mortality in HM patients with CROs BSI and to establish a scoring model for early mortality prediction.Methods: We conducted a retrospective cohort study at our hematological department from January 2018 to December 2021, including all HM patients with CROs BSI. The outcome measured was death within 30-day of BSI onset. Survivor and non-survivor subgroups were compared to identify predictors of mortality. Univariate and multivariate Cox regression analyses were used to identify prognostic risk factors and develop a nomogram.Results: In total, 150 HM patients were included in the study showing an overall 30-day mortality rate of 56%. Klebsiella pneumonia was the dominant episode. Cox regression analysis showed that pre-infection length of stay was > 14 days (score 41), Pitt score > 4 (score 100), mucositis (score 41), CAR (The ratio of C-reactive protein to albumin) > 8.8 (score 57), early definitive therapy (score 44), and long-duration (score 78) were positive independent risk predictors associated with 30-day mortality, all of which were selected into the nomogram. Furthermore, all patients were divided into the high-risk group (≥ 160 points) or the low-risk group based on the prediction score model. The mortality of the high-risk group was 8 times more than the low-risk group. Kaplan-Meier analysis showed that empirical polymyxin B therapy was associated with a lower 30-day mortality rate, which was identified as a good prognostic factor in the high-risk group. In comparison, empirical carbapenems and tigecycline were poor prognostic factors in a low-risk group.Conclusion: Our score model can accurately predict 30-day mortality in HM patients with CROs BSI. Early administration of CROs-targeted therapy in the high-risk group is strongly recommended to decrease mortality.Keywords: carbapenem-resistant organisms, predictive model, nomogram, hematological malignancies, bloodstream infection

Published
2023

20. Emergence of Ceftazidime–Avibactam Resistance and Decreased Virulence in Carbapenem-Resistant ST11 Klebsiella pneumoniae During Antibiotics Treatment

Author

Xu M, Qian C, Jia H, Feng L, Shi S, Zhang Y, Wang L, Cao J, Zhou T, and Zhou C

Subjects
ceftazidime-avibactam, carbapenem-resistant klebsiella pneumoniae, whole-genome sequencing, hypermucoviscosity, plvpk-like plasmid, virulence attenuation, Infectious and parasitic diseases, RC109-216
Abstract

Mengxin Xu,1 Changrui Qian,2 Huaiyu Jia,1 Luozhu Feng,3 Shiyi Shi,1 Ying Zhang,3 Lingbo Wang,1 Jianming Cao,3 Tieli Zhou,1 Cui Zhou1 1Department of Clinical Laboratory, the First Affiliated Hospital of Wenzhou Medical University, Key Laboratory of Clinical Laboratory Diagnosis and Translational Research of Zhejiang Province, Wenzhou, People’s Republic of China; 2School of Basic Medical Sciences, Wenzhou Medical University, Wenzhou, People’s Republic of China; 3Department of Medical Laboratory Science, School of Laboratory Medicine and Life Science, Wenzhou Medical University, Wenzhou, People’s Republic of ChinaCorrespondence: Tieli Zhou; Cui Zhou, Department of Clinical Laboratory, the First Affiliated Hospital of Wenzhou Medical University; Key Laboratory of Clinical Laboratory Diagnosis and Translational Research of Zhejiang Province, Wenzhou, 325035, People’s Republic of China, Tel +86 0577 8668 9885, Email wyztli@163.com; ZHOUCUI0826@163.comIntroduction: Carbapenem-resistant Klebsiella pneumoniae (CRKP) poses a serious threat to human public health. Ceftazidime–avibactam (CZA) is currently one of the few effective antibiotics for carbapenem-resistant Enterobacteriaceae (CRE).Methods and Results: Here, we analyzed two longitudinal Klebsiella pneumoniae clinical isolates (FK8578, FK8695) that were isolated from an ICU patient during antimicrobial treatment. Broth microdilution method, whole-genome sequencing (WGS) and comparative genomic analysis were used to elucidate the dynamics and mechanisms of antibiotic resistance. String test, quantification of capsule, biofilm inhibition test and Galleria mellonella (G. mellonella) infection model were used to explore the changes in virulence of the two clinical isolates. During antibiotic treatment, CRKP FK8578 underwent a series of drug resistance and virulence changes, including CZA resistance, carbapenem susceptibility and virulence attenuation. The results of WGS showed that mutation of blaKPC-2 to blaKPC-33 was responsible for the change of drug resistance phenotype between FK8578 and FK8695. pLVPK-like virulence plasmid without siderophore synthesis operon was identified in the two strains. On the other hand, the loss of hypermucoviscosity phenotype in the FK8695 strain may be related to a single nucleotide deletion of the rmpA gene, which would further lead to a decrease in virulence. Virulence results showed that compared with FK8578, FK8695 was negative in the string test, with decreased capsular production, smaller amounts of biofilm formation and higher survival rate of G. mellonella.Conclusion: This is the first report of CZA resistance and decreased virulence in ST11 CRKP strains during antimicrobial treatment. It is urgent to monitor CZA resistance and timely adjust anti-infective treatment strategies.Keywords: ceftazidime–avibactam, carbapenem-resistantKlebsiella pneumoniae, whole-genome sequencing, hypermucoviscosity, pLVPK-like plasmid, virulence attenuation

Published
2022

21. rpoB Mutations are Associated with Variable Levels of Rifampin and Rifabutin Resistance in Mycobacterium tuberculosis

Author

Li MC, Wang XY, Xiao TY, Lin SQ, Liu HC, Qian C, Xu D, Li GL, Zhao XQ, Liu ZG, Zhao LL, and Wan KL

Subjects
mycobacterium tuberculosis, rifampin resistance, rifabutin resistance, mutation, Infectious and parasitic diseases, RC109-216
Abstract

Ma-Chao Li,1,* Xiao-Yue Wang,1,* Tong-Yang Xiao,2,* Shi-Qiang Lin,3 Hai-Can Liu,1 Cheng Qian,4 Da Xu,1 Gui-Lian Li,1 Xiu-Qin Zhao,1 Zhi-Guang Liu,1 Li-Li Zhao,1 Kang-Lin Wan1 1State Key Laboratory of Infectious Disease Prevention and Control, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, People’s Republic of China; 2Department of Clinical Laboratory, The Fifth Affiliated Hospital of Sun Yat-sen University, Zhuhai, Guangdong, People’s Republic of China; 3Department of Bioinformatics, College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, Fujian Province, People’s Republic of China; 4Beijing Center for Disease Control and Prevention, Beijing, People’s Republic of China*These authors contributed equally to this workCorrespondence: Li-Li Zhao; Kang-Lin Wan, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, P.O. Box 5, Changping, Beijing, 102206, People’s Republic of China, Tel/Fax +86 10 58900779, Email zhaolili@icdc.cn; wankanglin@icdc.cnObjective: To assess the relationship between the variant rpoB mutations and the degree of rifampin (RIF)/rifabutin (RFB) resistance in Mycobacterium tuberculosis (M. tuberculosis).Methods: We analyzed the whole rpoB gene in 177 M. tuberculosis clinical isolates and quantified their minimum inhibitory concentrations (MICs) using microplate-based assays.Results: The results revealed that of the 177 isolates, 116 were resistant to both RIF and RFB. There were 38 mutated patterns within the sequenced whole rpoB gene of the 120 isolates. Statistical analysis indicated that mutations, S450L, H445D, H445Y, and H445R, were associated with RIF and RFB resistance. Of these mutations, S450L, H445D, and H445Y were associated with high-level RIF and RFB MIC. H445R was associated with high-level RIF MIC, but not high-level RFB MIC. D435V and L452P were associated with only RIF, but not RFB resistance. Q432K and Q432L were associated with high-level RFB MIC. Several single mutations without statistical association with rifamycin resistance, such as V170F, occurred exclusively in low-level RIF but high-level RFB resistant isolates. Additionally, although cross-resistance to RIF and RFB is common, 21 RIF-resistant/RFB-susceptible isolates were identified.Conclusion: This study highlighted the complexity of rifamycin resistance. Identification of the rpoB polymorphism will be helpful to diagnose the RIF-resistant tuberculosis that has the potential to benefit from a treatment regimen including RFB.Keywords: Mycobacterium tuberculosis, rifampin resistance, rifabutin resistance, mutation

Published
2022

24. In situ TEM observation of neck formation during oriented attachment of PbSe nanocrystals

Author

Wang, Y, Peng, X, Abelson, A, Zhang, BK, Qian, C, Ercius, P, Wang, LW, Law, M, and Zheng, H

Subjects
PbSe nanocrystals, quantum dots, superlattices, necking, oriented attachment, liquid cell transmission electron microscopy, Nanoscience & Nanotechnology
Abstract

Oriented attachment of nanocrystals is an important route to constructing epitaxially-connected nanocrystal superlattices for various applications. During oriented attachment of semiconductor nanocrystals, neck can be formed between nanocrystals and it strongly influences the properties of the resulting superlattice. However, the neck formation mechanism is poorly understood. Here, we use in situ liquid cell transmission electron microscopy to directly observe the initiation and growth of homoepitaxial necks between PbSe nanocrystals with atomic details. We find that neck initiation occurs slowly (~ 10 s) when two nanocrystals approach to each other within an edge-to-edge distance of 0.6 nm. During neck initiation, Pb and Se atoms defuse from other facets into the gap, forming “dynamic reversible” filaments. Once the filament (neck) width is larger than a critical size of 0.9 nm, it gradually (15 s) widens into a 3-nm-wide neck. The atomic structure of the neck is further obtained using ex situ aberration-corrected scanning TEM imaging. Neck initiation and growth mechanisms are elucidated with density functional theory calculations. Our direct unveiling of the atomic pathways of neck formation during oriented attachment shed light into the fabrication of nanocrystal superlattices with improved structural order and electronic properties. [Figure not available: see fulltext.].

Published
2019

25. Polyisoprene Captured Sulfur Nanocomposite Materials for High-Areal-Capacity Lithium Sulfur Battery

Author

Li, Z, Fang, C, Qian, C, Zhou, S, Song, X, Ling, M, Liang, C, and Liu, G

Subjects
polyisoprene, inverse vulcanization, binder, shuttle effects, lithium sulfur battery
Abstract

A polyisoprene-sulfur (PIPS) copolymer and nano sulfur composite material (90 wt % sulfur) is synthesized through inverse vulcanization of PIP polymer with micrometer-sized sulfur particles for high-areal-capacity lithium sulfur batteries. The polycrystalline structure and nanodomain nature of the copolymer are revealed through high-resolution transmission electron microscopy (HRTEM). PIP polymer is also used as binders for the electrode to further capture the dissovlved polysulfides. A high areal capacity of ca. 7.0 mAh/cm2 and stable cycling are achieved based on the PIPS nanosulfur composite with a PIP binder, crucial to commercialization of lithium sulfur batteries. The chemical confinement both at material and electrode level alleviates the diffusion of polysulfides and the shuttle effect. The sulfur electrodes, both fresh and cycled, are analyzed through scanning electron microscopy (SEM). This approach enables scalable material production and high sulfur utilization at the cell level.

Published
2019

26. Increased Serum Trimethylamine N-Oxide Level in Type 2 Diabetic Patients with Mild Cognitive Impairment

Author

Xu N, Wan J, Wang C, Liu J, Qian C, and Tan H

Subjects
trimethylamine n-oxide, type 2 diabetes mellitus, mild cognitive impairment, montreal cognitive assessment, healthy control, Specialties of internal medicine, RC581-951
Abstract

Nongzhang Xu,1,&ast; Jianwei Wan,1,&ast; Cuihong Wang,1 Jiatao Liu,2 Chenqai Qian,1 Hongyang Tan3 1Department of Pharmacy, Shanghai University of Medicine and Health Science Affiliated Zhoupu Hospital, Shanghai, People’s Republic of China; 2Department of Oncology, the First Affiliated Hospital of Anhui Medical University, Hefei, People’s Republic of China; 3Clinical Research Center for Mental Disorders, Chinese-German Institute of Mental Health Shanghai Pudong New Area Mental Health Center, School of Medicine, Tongji University, Shanghai, People’s Republic of China&ast;These authors contributed equally to this workCorrespondence: Hongyang Tan, Clinical Research Center for Mental Disorders, Chinese-German Institute of Mental Health, Shanghai Pudong New Area Mental Health Center, School of Medicine, Tongji University, Shanghai, People’s Republic of China, Tel +86-18321133996, Email tanhongyang2013@163.comPurpose: Trimethylamine N-oxide (TMAO) is a metabolite of phosphatidylcholine in red meat and other diets, which is associated with cardiovascular and other diseases. The aim of this study is to evaluate the associations of serum TMAO with mild cognitive impairment (MCI) in the Chinese type 2 diabetes mellitus (T2DM) population.Materials and Methods: A total of 253 hospitalized T2DM patients and 150 healthy controls were included in this cross-sectional study. Montreal Cognitive Assessment (MoCA) assessed the cognition function, and the 253 T2DM patients were divided into 74 subjects with MCI and 179 with non-MCI. Demographic data and biochemical test results were evaluated. Serum TMAO level was measured by high-performance liquid chromatography-tandem mass spectrometry (HPLC-MS/MS).Results: A higher serum TMAO level was observed in T2DM patients compared with the healthy controls (P < 0.001). Among all T2DM patients, the MCI group (n = 74) showed higher serum TMAO levels than the non-MCI group. Spearman correlation test showed that TMAO levels were significantly positively correlated with age (r = 0.147, P = 0.019), body mass index (BMI) (r = 0.153, P = 0.015), diabetes duration (r = 0.160, P = 0.011), HbA1c (r = 0.138, P = 0.029), triglyceride (TG) (r = 0.138, P = 0.029), creatinine (r = 0.184, p = 0.003), hs-CRP (r = 0.243, P < 0.001), and were negatively correlated with HDL-C (r = − 0.144, P = 0.022), BDNF (r = − 0.165, p = 0.009), and MoCA (r = − 0.386, P < 0.001) score (all P < 0.05). Multivariable Logistic regression identified high serum TMAO level as a significant independent factor of MCI in the T2DM patients (OR = 1.404, 95% CI = 1.255– 1.571; P < 0.001).Conclusion: Our study showed that T2DM patients with MCI have elevated serum TMAO levels.Keywords: trimethylamine N-oxide, type 2 diabetes mellitus, mild cognitive impairment, Montreal Cognitive Assessment, healthy control

Published
2022

27. Excess and Defect: How Job-Family Responsibilities Congruence Effect the Employee Procrastination Behavior

Author

Gu X, Xu G, Qian C, Chang S, and Deng D

Subjects
job-family responsibilities congruence, emotional exhaustion, employee procrastination behavior, conservation of resources theory, configurational approach, Psychology, BF1-990, Industrial psychology, HF5548.7-5548.85
Abstract

Xinran Gu, Guangyi Xu, Chen Qian, Saichao Chang, Dandan Deng School of Business Administration, South China University of Technology, Guangzhou, People’s Republic of ChinaCorrespondence: Chen Qian, School of Business Administration, South China University of Technology, Tianhe District, Guangzhou, People’s Republic of China, Email 201710105492@mail.scut.edu.cnPurpose: Prior work suggests that responsibility is negatively associated with employee procrastination behavior. Based on the conservation of resources (COR) theory, we suggest this view is oversimplified and propose that procrastination can be induced when employees have congruent job and family responsibilities via the mediating effect of emotional exhaustion.Methods: This is a quantitative study of the configurational approach. Survey data were collected from 323 employees at two stages in southern Chinese internet enterprises in September 2020. A randomized cluster sample was used and an anonymous self-assessment questionnaire was distributed to all selected respondents (employees). Samples involved different departments, and the procrastination phenomenon is more significant among them. SPSS20.2 and MPLUS 8.3 software and Response Surface Analysis Strategy were used to test the hypotheses.Results: The data analysis results indicated that: a) employee procrastination behavior is higher when employees’ job responsibility and family responsibility are congruent than the incongruent configurations. b) Procrastination is lower when job-family dyads are congruent at high levels of responsibility compared the low levels. c) Procrastination decreases as employees’ job and family responsibilities become more discrepant (ie, incongruent); employees with low job-high family responsibilities procrastinate more than those with high job-low family responsibilities. d) Additionally, employee-experienced emotional exhaustion mediates the relationship in four configurations between job-family responsibilities congruence and procrastination behavior.Conclusion: Drawing on the conservation of resources theory, we proposed a model clarifying how varying combinations of job and family responsibilities affect employee procrastination behavior. The results showed that there are significant differences in the impact of different job-family responsibility combinations on employee procrastination behavior. Employee procrastination behavior is higher when employees’ job-family responsibility are congruent than the incongruent configurations. Additionally, employee-experienced emotional exhaustion mediates the relationship in four configurations between job-family responsibilities congruence and procrastination behavior.Keywords: job-family responsibilities congruence, emotional exhaustion, employee procrastination behavior, conservation of resources theory, configurational approach

Published
2022

29. Updated branching fraction measurements of $B^0_{(s)} \to K_{\mathrm{\scriptscriptstyle S}}^0 h^+ h^{\prime -}$ decays

Author

LHCb collaboration, Aaij, R., Adeva, B., Adinolfi, M., Ajaltouni, Z., Akar, S., Albrecht, J., Alessio, F., Alexander, M., Ali, S., Alkhazov, G., Cartelle, P. Alvarez, Alves Jr, A. A., Amato, S., Amerio, S., Amhis, Y., An, L., Anderlini, L., Andreassi, G., Andreotti, M., Andrews, J. E., Appleby, R. B., Archilli, F., d'Argent, P., Romeu, J. Arnau, Artamonov, A., Artuso, M., Aslanides, E., Auriemma, G., Baalouch, M., Babuschkin, I., Bachmann, S., Back, J. J., Badalov, A., Baesso, C., Baker, S., Balagura, V., Baldini, W., Baranov, A., Barlow, R. J., Barschel, C., Barsuk, S., Barter, W., Baryshnikov, F., Baszczyk, M., Batozskaya, V., Batsukh, B., Battista, V., Bay, A., Beaucourt, L., Beddow, J., Bedeschi, F., Bediaga, I., Beiter, A., Bel, L. J., Bellee, V., Belloli, N., Belous, K., Belyaev, I., Ben-Haim, E., Bencivenni, G., Benson, S., Beranek, S., Berezhnoy, A., Bernet, R., Bertolin, A., Betancourt, C., Betti, F., Bettler, M. -O., van Beuzekom, M., Bezshyiko, Ia., Bifani, S., Billoir, P., Birnkraut, A., Bitadze, A., Bizzeti, A., Blake, T., Blanc, F., Blouw, J., Blusk, S., Bocci, V., Boettcher, T., Bondar, A., Bondar, N., Bonivento, W., Bordyuzhin, I., Borgheresi, A., Borghi, S., Borisyak, M., Borsato, M., Bossu, F., Boubdir, M., Bowcock, T. J. V., Bowen, E., Bozzi, C., Braun, S., Britton, T., Brodzicka, J., Buchanan, E., Burr, C., Bursche, A., Buytaert, J., Cadeddu, S., Calabrese, R., Calvi, M., Gomez, M. Calvo, Camboni, A., Campana, P., Perez, D. H. Campora, Capriotti, L., Carbone, A., Carboni, G., Cardinale, R., Cardini, A., Carniti, P., Carson, L., Akiba, K. Carvalho, Casse, G., Cassina, L., Garcia, L. Castillo, Cattaneo, M., Cavallero, G., Cenci, R., Chamont, D., Charles, M., Charpentier, Ph., Chatzikonstantinidis, G., Chefdeville, M., Chen, S., Cheung, S. F., Chobanova, V., Chrzaszcz, M., Chubykin, A., Vidal, X. Cid, Ciezarek, G., Clarke, P. E. L., Clemencic, M., Cliff, H. V., Closier, J., Coco, V., Cogan, J., Cogneras, E., Cogoni, V., Cojocariu, L., Collins, P., Comerma-Montells, A., Contu, A., Cook, A., Coombs, G., Coquereau, S., Corti, G., Corvo, M., Sobral, C. M. Costa, Couturier, B., Cowan, G. A., Craik, D. C., Crocombe, A., Torres, M. Cruz, Cunliffe, S., Currie, R., D'Ambrosio, C., Marinho, F. Da Cunha, Dall'Occo, E., Dalseno, J., Davis, A., De Bruyn, K., De Capua, S., De Cian, M., De Miranda, J. M., De Paula, L., De Serio, M., De Simone, P., Dean, C. T., Decamp, D., Deckenhoff, M., Del Buono, L., Dembinski, H. -P., Demmer, M., Dendek, A., Derkach, D., Deschamps, O., Dettori, F., Dey, B., Di Canto, A., Di Nezza, P., Dijkstra, H., Dordei, F., Dorigo, M., Suárez, A. Dosil, Dovbnya, A., Dreimanis, K., Dufour, L., Dujany, G., Dungs, K., Durante, P., Dzhelyadin, R., Dziewiecki, M., Dziurda, A., Dzyuba, A., Déléage, N., Easo, S., Ebert, M., Egede, U., Egorychev, V., Eidelman, S., Eisenhardt, S., Eitschberger, U., Ekelhof, R., Eklund, L., Ely, S., Esen, S., Evans, H. M., Evans, T., Falabella, A., Farley, N., Farry, S., Fay, R., Fazzini, D., Ferguson, D., Fernandez, G., Prieto, A. Fernandez, Ferrari, F., Rodrigues, F. Ferreira, Ferro-Luzzi, M., Filippov, S., Fini, R. A., Fiore, M., Fiorini, M., Firlej, M., Fitzpatrick, C., Fiutowski, T., Fleuret, F., Fohl, K., Fontana, M., Fontanelli, F., Forshaw, D. C., Forty, R., Lima, V. Franco, Frank, M., Frei, C., Fu, J., Funk, W., Furfaro, E., Färber, C., Gabriel, E., Torreira, A. Gallas, Galli, D., Gallorini, S., Gambetta, S., Gandelman, M., Gandini, P., Gao, Y., Martin, L. M. Garcia, Pardiñas, J. García, Tico, J. Garra, Garrido, L., Garsed, P. J., Gascon, D., Gaspar, C., Gavardi, L., Gazzoni, G., Gerick, D., Gersabeck, E., Gersabeck, M., Gershon, T., Ghez, Ph., Gianì, S., Gibson, V., Girard, O. G., Giubega, L., Gizdov, K., Gligorov, V. V., Golubkov, D., Golutvin, A., Gomes, A., Gorelov, I. V., Gotti, C., Govorkova, E., Diaz, R. Graciani, Cardoso, L. A. Granado, Graugés, E., Graverini, E., Graziani, G., Grecu, A., Greim, R., Griffith, P., Grillo, L., Gruber, L., Cazon, B. R. Gruberg, Grünberg, O., Gushchin, E., Guz, Yu., Gys, T., Göbel, C., Hadavizadeh, T., Hadjivasiliou, C., Haefeli, G., Haen, C., Haines, S. C., Hamilton, B., Han, X., Hansmann-Menzemer, S., Harnew, N., Harnew, S. T., Harrison, J., Hatch, M., He, J., Head, T., Heister, A., Hennessy, K., Henrard, P., Henry, L., van Herwijnen, E., Heß, M., Hicheur, A., Hill, D., Hombach, C., Hopchev, P. H., Huard, Z. -C., Hulsbergen, W., Humair, T., Hushchyn, M., Hutchcroft, D., Idzik, M., Ilten, P., Jacobsson, R., Jalocha, J., Jans, E., Jawahery, A., Jiang, F., John, M., Johnson, D., Jones, C. R., Joram, C., Jost, B., Jurik, N., Kandybei, S., Karacson, M., Kariuki, J. M., Karodia, S., Kecke, M., Kelsey, M., Kenzie, M., Ketel, T., Khairullin, E., Khanji, B., Khurewathanakul, C., Kirn, T., Klaver, S., Klimaszewski, K., Klimkovich, T., Koliiev, S., Kolpin, M., Komarov, I., Kopecna, R., Koppenburg, P., Kosmyntseva, A., Kotriakhova, S., Kozachuk, A., Kozeiha, M., Kravchuk, L., Kreps, M., Krokovny, P., Kruse, F., Krzemien, W., Kucewicz, W., Kucharczyk, M., Kudryavtsev, V., Kuonen, A. K., Kurek, K., Kvaratskheliya, T., Lacarrere, D., Lafferty, G., Lai, A., Lanfranchi, G., Langenbruch, C., Latham, T., Lazzeroni, C., Gac, R. Le, van Leerdam, J., Leflat, A., Lefrançois, J., Lefèvre, R., Lemaitre, F., Cid, E. Lemos, Leroy, O., Lesiak, T., Leverington, B., Li, T., Li, Y., Li, Z., Likhomanenko, T., Lindner, R., Lionetto, F., Liu, X., Loh, D., Longstaff, I., Lopes, J. H., Lucchesi, D., Martinez, M. Lucio, Luo, H., Lupato, A., Luppi, E., Lupton, O., Lusiani, A., Lyu, X., Machefert, F., Maciuc, F., Maev, O., Maguire, K., Malde, S., Malinin, A., Maltsev, T., Manca, G., Mancinelli, G., Manning, P., Maratas, J., Marchand, J. F., Marconi, U., Benito, C. Marin, Marinangeli, M., Marino, P., Marks, J., Martellotti, G., Martin, M., Martinelli, M., Santos, D. Martinez, Vidal, F. Martinez, Tostes, D. Martins, Massacrier, L. M., Massafferri, A., Matev, R., Mathad, A., Mathe, Z., Matteuzzi, C., Mauri, A., Maurice, E., Maurin, B., Mazurov, A., McCann, M., McNab, A., McNulty, R., Meadows, B., Meier, F., Melnychuk, D., Merk, M., Merli, A., Michielin, E., Milanes, D. A., Minard, M. -N., Mitzel, D. S., Mogini, A., Rodriguez, J. Molina, Monroy, I. A., Monteil, S., Morandin, M., Morello, M. J., Morgunova, O., Moron, J., Morris, A. B., Mountain, R., Muheim, F., Mulder, M., Mussini, M., Müller, D., Müller, J., Müller, K., Müller, V., Naik, P., Nakada, T., Nandakumar, R., Nandi, A., Nasteva, I., Needham, M., Neri, N., Neubert, S., Neufeld, N., Neuner, M., Nguyen, T. D., Nguyen-Mau, C., Nieswand, S., Niet, R., Nikitin, N., Nikodem, T., Nogay, A., O'Hanlon, D. P., Oblakowska-Mucha, A., Obraztsov, V., Ogilvy, S., Oldeman, R., Onderwater, C. J. G., Ossowska, A., Goicochea, J. M. Otalora, Owen, P., Oyanguren, A., Pais, P. R., Palano, A., Palutan, M., Papanestis, A., Pappagallo, M., Pappalardo, L. L., Pappenheimer, C., Parker, W., Parkes, C., Passaleva, G., Pastore, A., Patel, M., Patrignani, C., Pearce, A., Pellegrino, A., Penso, G., Altarelli, M. Pepe, Perazzini, S., Perret, P., Pescatore, L., Petridis, K., Petrolini, A., Petrov, A., Petruzzo, M., Olloqui, E. Picatoste, Pietrzyk, B., Pikies, M., Pinci, D., Pistone, A., Piucci, A., Placinta, V., Playfer, S., Casasus, M. Plo, Poikela, T., Polci, F., Lener, M. Poli, Poluektov, A., Polyakov, I., Polycarpo, E., Pomery, G. J., Ponce, S., Popov, A., Popov, D., Popovici, B., Poslavskii, S., Potterat, C., Price, E., Prisciandaro, J., Prouve, C., Pugatch, V., Navarro, A. Puig, Punzi, G., Qian, C., Qian, W., Quagliani, R., Rachwal, B., Rademacker, J. H., Rama, M., Pernas, M. Ramos, Rangel, M. S., Raniuk, I., Ratnikov, F., Raven, G., Salzgeber, M. Ravonel, Reboud, M., Redi, F., Reichert, S., Reis, A. C. dos, Alepuz, C. Remon, Renaudin, V., Ricciardi, S., Richards, S., Rihl, M., Rinnert, K., Molina, V. Rives, Robbe, P., Rodrigues, A. B., Rodrigues, E., Lopez, J. A. Rodriguez, Perez, P. Rodriguez, Rogozhnikov, A., Roiser, S., Rollings, A., Romanovskiy, V., Vidal, A. Romero, Ronayne, J. W., Rotondo, M., Rudolph, M. S., Ruf, T., Valls, P. Ruiz, Silva, J. J. Saborido, Sadykhov, E., Sagidova, N., Saitta, B., Guimaraes, V. Salustino, Gonzalo, D. Sanchez, Mayordomo, C. Sanchez, Sedes, B. Sanmartin, Santacesaria, R., Rios, C. Santamarina, Santimaria, M., Santovetti, E., Sarti, A., Satriano, C., Satta, A., Saunders, D. M., Savrina, D., Schael, S., Schellenberg, M., Schiller, M., Schindler, H., Schlupp, M., Schmelling, M., Schmelzer, T., Schmidt, B., Schneider, O., Schopper, A., Schreiner, H. F., Schubert, K., Schubiger, M., Schune, M. -H., Schwemmer, R., Sciascia, B., Sciubba, A., Semennikov, A., Sergi, A., Serra, N., Serrano, J., Sestini, L., Seyfert, P., Shapkin, M., Shapoval, I., Shcheglov, Y., Shears, T., Shekhtman, L., Shevchenko, V., Siddi, B. G., Coutinho, R. Silva, de Oliveira, L. Silva, Simi, G., Simone, S., Sirendi, M., Skidmore, N., Skwarnicki, T., Smith, E., Smith, I. T., Smith, J., Smith, M., Lavra, l. Soares, Sokoloff, M. D., Soler, F. J. P., De Paula, B. Souza, Spaan, B., Spradlin, P., Sridharan, S., Stagni, F., Stahl, M., Stahl, S., Stefko, P., Stefkova, S., Steinkamp, O., Stemmle, S., Stenyakin, O., Stevens, H., Stoica, S., Stone, S., Storaci, B., Stracka, S., Stramaglia, M. E., Straticiuc, M., Straumann, U., Sun, L., Sutcliffe, W., Swientek, K., Syropoulos, V., Szczekowski, M., Szumlak, T., T'Jampens, S., Tayduganov, A., Tekampe, T., Tellarini, G., Teubert, F., Thomas, E., van Tilburg, J., Tilley, M. J., Tisserand, V., Tobin, M., Tolk, S., Tomassetti, L., Tonelli, D., Topp-Joergensen, S., Toriello, F., Aoude, R. Tourinho Jadallah, Tournefier, E., Tourneur, S., Trabelsi, K., Traill, M., Tran, M. T., Tresch, M., Trisovic, A., Tsaregorodtsev, A., Tsopelas, P., Tully, A., Tuning, N., Ukleja, A., Ustyuzhanin, A., Uwer, U., Vacca, C., Vagnoni, V., Valassi, A., Valat, S., Valenti, G., Gomez, R. Vazquez, Regueiro, P. Vazquez, Vecchi, S., van Veghel, M., Velthuis, J. J., Veltri, M., Veneziano, G., Venkateswaran, A., Verlage, T. A., Vernet, M., Vesterinen, M., Barbosa, J. V. Viana, Viaud, B., Vieira, D., Diaz, M. Vieites, Viemann, H., Vilasis-Cardona, X., Vitti, M., Volkov, V., Vollhardt, A., Voneki, B., Vorobyev, A., Vorobyev, V., Voß, C., de Vries, J. A., Sierra, C. Vázquez, Waldi, R., Wallace, C., Wallace, R., Walsh, J., Wang, J., Ward, D. R., Wark, H. M., Watson, N. K., Websdale, D., Weiden, A., Whitehead, M., Wicht, J., Wilkinson, G., Wilkinson, M., Williams, M., Williams, M. P., Williams, T., Wilson, F. F., Wimberley, J., Winn, M. A., Wishahi, J., Wislicki, W., Witek, M., Wormser, G., Wotton, S. A., Wraight, K., Wyllie, K., Xie, Y., Xing, Z., Xu, Z., Yang, Z., Yao, Y., Yin, H., Yu, J., Yuan, X., Yushchenko, O., Zarebski, K. A., Zavertyaev, M., Zhang, L., Zhang, Y., Zhelezov, A., Zheng, Y., Zhu, X., Zhukov, V., Zonneveld, J. B., and Zucchelli, S.

Subjects
High Energy Physics - Experiment
Abstract

The charmless three-body decays $B^0_{(s)} \to K_{\mathrm{\scriptscriptstyle S}}^0 h^+ h^{\prime -}$ (where $h^{(\prime)} = \pi, K$) are analysed using a sample of $pp$ collision data recorded by the LHCb experiment, corresponding to an integrated luminosity of $3\mbox{fb}^{-1}$. The branching fractions are measured relative to that of the $B^0 \to K_{\mathrm{\scriptscriptstyle S}}^0 \pi^{+} \pi^{-}$ decay, and are determined to be: \begin{eqnarray*} \frac{{\cal B}(B^0\rightarrow K^0_{\rm S}K^{\pm}\pi^{\mp})}{{\cal B}(B^0\rightarrow K^0_{\rm S}\pi^{+}\pi^{-})} = {} & 0.123 \pm 0.009 \; \mathrm{\,(stat)}\; \pm 0.015 \; \mathrm{\,(syst)}\,, \frac{{\cal B}(B^0\rightarrow K^0_{\rm S}K^{+}K^{-})} {{\cal B}(B^0\rightarrow K^0_{\rm S}\pi^{+}\pi^{-})} = {} & 0.549 \pm 0.018 \; \mathrm{\,(stat)}\; \pm 0.033 \; \mathrm{\,(syst)}\,, \frac{{\cal B}(B_{s}^0\rightarrow K^0_{\rm S}\pi^{+}\pi^{-})}{{\cal B}(B^0\rightarrow K^0_{\rm S}\pi^{+}\pi^{-})} = {} & 0.191 \pm 0.027 \; \mathrm{\,(stat)}\; \pm 0.031 \; \mathrm{\,(syst)}\; \pm 0.011 \; (f_s/f_d) \,, \frac{{\cal B}(B_{s}^0\rightarrow K^0_{\rm S}K^{\pm}\pi^{\mp})} {{\cal B}(B^0\rightarrow K^0_{\rm S}\pi^{+}\pi^{-})} = {} & 1.70\phantom{0} \pm 0.07\phantom{0} \; \mathrm{\,(stat)} \; \pm 0.11\phantom{0} \; \mathrm{\,(syst)}\; \pm 0.10\phantom{0} \; (f_s/f_d) \,, \frac{{\cal B}(B_{s}^0\rightarrow K^0_{\rm S}K^{+}K^{-})}{{\cal B}(B^0\rightarrow K^0_{\rm S}\pi^{+}\pi^{-})} \in {} & [0.008 - 0.051] \rm ~at~90\%~confidence~level, \end{eqnarray*} where $f_s/f_d$ represents the ratio of hadronisation fractions of the $B^0_s$ and $B^0$ mesons., Comment: All figures and tables, along with any supplementary material and additional information, are available at https://lhcbproject.web.cern.ch/lhcbproject/Publications/LHCbProjectPublic/LHCb-PAPER-2017-010.html

Published
2017
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30. Measurement of $B^{0}_{s}$ and $D^{-}_{s}$ meson lifetimes

Author

LHCb collaboration, Aaij, R., Adeva, B., Adinolfi, M., Ajaltouni, Z., Akar, S., Albrecht, J., Alessio, F., Alexander, M., Ali, S., Alkhazov, G., Cartelle, P. Alvarez, Alves Jr, A. A., Amato, S., Amerio, S., Amhis, Y., An, L., Anderlini, L., Andreassi, G., Andreotti, M., Andrews, J. E., Appleby, R. B., Archilli, F., d'Argent, P., Romeu, J. Arnau, Artamonov, A., Artuso, M., Aslanides, E., Auriemma, G., Baalouch, M., Babuschkin, I., Bachmann, S., Back, J. J., Badalov, A., Baesso, C., Baker, S., Balagura, V., Baldini, W., Baranov, A., Barlow, R. J., Barschel, C., Barsuk, S., Barter, W., Baryshnikov, F., Baszczyk, M., Batozskaya, V., Batsukh, B., Battista, V., Bay, A., Beaucourt, L., Beddow, J., Bedeschi, F., Bediaga, I., Beiter, A., Bel, L. J., Bellee, V., Belloli, N., Belous, K., Belyaev, I., Ben-Haim, E., Bencivenni, G., Benson, S., Beranek, S., Berezhnoy, A., Bernet, R., Bertolin, A., Betancourt, C., Betti, F., Bettler, M. -O., van Beuzekom, M., Bezshyiko, Ia., Bifani, S., Billoir, P., Birnkraut, A., Bitadze, A., Bizzeti, A., Blake, T., Blanc, F., Blouw, J., Blusk, S., Bocci, V., Boettcher, T., Bondar, A., Bondar, N., Bonivento, W., Bordyuzhin, I., Borgheresi, A., Borghi, S., Borisyak, M., Borsato, M., Bossu, F., Boubdir, M., Bowcock, T. J. V., Bowen, E., Bozzi, C., Braun, S., Britton, T., Brodzicka, J., Buchanan, E., Burr, C., Bursche, A., Buytaert, J., Cadeddu, S., Calabrese, R., Calvi, M., Gomez, M. Calvo, Camboni, A., Campana, P., Perez, D. H. Campora, Capriotti, L., Carbone, A., Carboni, G., Cardinale, R., Cardini, A., Carniti, P., Carson, L., Akiba, K. Carvalho, Casse, G., Cassina, L., Garcia, L. Castillo, Cattaneo, M., Cavallero, G., Cenci, R., Chamont, D., Charles, M., Charpentier, Ph., Chatzikonstantinidis, G., Chefdeville, M., Chen, S., Cheung, S. -F., Chobanova, V., Chrzaszcz, M., Chubykin, A., Vidal, X. Cid, Ciezarek, G., Clarke, P. E. L., Clemencic, M., Cliff, H. V., Closier, J., Coco, V., Cogan, J., Cogneras, E., Cogoni, V., Cojocariu, L., Collins, P., Comerma-Montells, A., Contu, A., Cook, A., Coombs, G., Coquereau, S., Corti, G., Corvo, M., Sobral, C. M. Costa, Couturier, B., Cowan, G. A., Craik, D. C., Crocombe, A., Torres, M. Cruz, Cunliffe, S., Currie, R., D'Ambrosio, C., Marinho, F. Da Cunha, Dall'Occo, E., Dalseno, J., David, P. N. Y., Davis, A., De Bruyn, K., De Capua, S., De Cian, M., De Miranda, J. M., De Paula, L., De Serio, M., De Simone, P., Dean, C. T., Decamp, D., Deckenhoff, M., Del Buono, L., Dembinski, H. -P., Demmer, M., Dendek, A., Derkach, D., Deschamps, O., Dettori, F., Dey, B., Di Canto, A., Di Nezza, P., Dijkstra, H., Dordei, F., Dorigo, M., Suárez, A. Dosil, Dovbnya, A., Dreimanis, K., Dufour, L., Dujany, G., Dungs, K., Durante, P., Dzhelyadin, R., Dziewiecki, M., Dziurda, A., Dzyuba, A., Déléage, N., Easo, S., Ebert, M., Egede, U., Egorychev, V., Eidelman, S., Eisenhardt, S., Eitschberger, U., Ekelhof, R., Eklund, L., Ely, S., Esen, S., Evans, H. M., Evans, T., Falabella, A., Farley, N., Farry, S., Fay, R., Fazzini, D., Ferguson, D., Fernandez, G., Prieto, A. Fernandez, Ferrari, F., Rodrigues, F. Ferreira, Ferro-Luzzi, M., Filippov, S., Fini, R. A., Fiore, M., Fiorini, M., Firlej, M., Fitzpatrick, C., Fiutowski, T., Fleuret, F., Fohl, K., Fontana, M., Fontanelli, F., Forshaw, D. C., Forty, R., Lima, V. Franco, Frank, M., Frei, C., Fu, J., Funk, W., Furfaro, E., Färber, C., Torreira, A. Gallas, Galli, D., Gallorini, S., Gambetta, S., Gandelman, M., Gandini, P., Gao, Y., Martin, L. M. Garcia, Pardiñas, J. García, Tico, J. Garra, Garrido, L., Garsed, P. J., Gascon, D., Gaspar, C., Gavardi, L., Gazzoni, G., Gerick, D., Gersabeck, E., Gersabeck, M., Gershon, T., Ghez, Ph., Gianì, S., Gibson, V., Girard, O. G., Giubega, L., Gizdov, K., Gligorov, V. V., Golubkov, D., Golutvin, A., Gomes, A., Gorelov, I. V., Gotti, C., Govorkova, E., Diaz, R. Graciani, Cardoso, L. A. Granado, Graugés, E., Graverini, E., Graziani, G., Grecu, A., Greim, R., Griffith, P., Grillo, L., Cazon, B. R. Gruberg, Grünberg, O., Gushchin, E., Guz, Yu., Gys, T., Göbel, C., Hadavizadeh, T., Hadjivasiliou, C., Haefeli, G., Haen, C., Haines, S. C., Hamilton, B., Han, X., Hansmann-Menzemer, S., Harnew, N., Harnew, S. T., Harrison, J., Hatch, M., He, J., Head, T., Heister, A., Hennessy, K., Henrard, P., Henry, L., van Herwijnen, E., Heß, M., Hicheur, A., Hill, D., Hombach, C., Hopchev, H., Huard, Z. -C., Hulsbergen, W., Humair, T., Hushchyn, M., Hutchcroft, D., Idzik, M., Ilten, P., Jacobsson, R., Jalocha, J., Jans, E., Jawahery, A., Jiang, F., John, M., Johnson, D., Jones, C. R., Joram, C., Jost, B., Jurik, N., Kandybei, S., Karacson, M., Kariuki, J. M., Karodia, S., Kecke, M., Kelsey, M., Kenzie, M., Ketel, T., Khairullin, E., Khanji, B., Khurewathanakul, C., Kirn, T., Klaver, S., Klimaszewski, K., Klimkovich, T., Koliiev, S., Kolpin, M., Komarov, I., Kopecna, R., Koppenburg, P., Kosmyntseva, A., Kotriakhova, S., Kozachuk, A., Kozeiha, M., Kravchuk, L., Kreps, M., Krokovny, P., Kruse, F., Krzemien, W., Kucewicz, W., Kucharczyk, M., Kudryavtsev, V., Kuonen, A. K., Kurek, K., Kvaratskheliya, T., Lacarrere, D., Lafferty, G., Lai, A., Lanfranchi, G., Langenbruch, C., Latham, T., Lazzeroni, C., Gac, R. Le, van Leerdam, J., Leflat, A., Lefrançois, J., Lefèvre, R., Lemaitre, F., Cid, E. Lemos, Leroy, O., Lesiak, T., Leverington, B., Li, T., Li, Y., Li, Z., Likhomanenko, T., Lindner, R., Lionetto, F., Liu, X., Loh, D., Longstaff, I., Lopes, J. H., Lucchesi, D., Martinez, M. Lucio, Luo, H., Lupato, A., Luppi, E., Lupton, O., Lusiani, A., Lyu, X., Machefert, F., Maciuc, F., Maev, O., Maguire, K., Malde, S., Malinin, A., Maltsev, T., Manca, G., Mancinelli, G., Manning, P., Maratas, J., Marchand, J. F., Marconi, U., Benito, C. Marin, Marinangeli, M., Marino, P., Marks, J., Martellotti, G., Martin, M., Martinelli, M., Santos, D. Martinez, Vidal, F. Martinez, Tostes, D. Martins, Massacrier, L. M., Massafferri, A., Matev, R., Mathad, A., Mathe, Z., Matteuzzi, C., Mauri, A., Maurice, E., Maurin, B., Mazurov, A., McCann, M., McNab, A., McNulty, R., Meadows, B., Meier, F., Melnychuk, D., Merk, M., Merli, A., Michielin, E., Milanes, D. A., Minard, M. -N., Mitzel, D. S., Mogini, A., Rodriguez, J. Molina, Monroy, I. A., Monteil, S., Morandin, M., Morello, M. J., Morgunova, O., Moron, J., Morris, A. B., Mountain, R., Muheim, F., Mulder, M., Mussini, M., Müller, D., Müller, J., Müller, K., Müller, V., Naik, P., Nakada, T., Nandakumar, R., Nandi, A., Nasteva, I., Needham, M., Neri, N., Neubert, S., Neufeld, N., Neuner, M., Nguyen, T. D., Nguyen-Mau, C., Nieswand, S., Niet, R., Nikitin, N., Nikodem, T., Nogay, A., Novoselov, A., O'Hanlon, D. P., Oblakowska-Mucha, A., Obraztsov, V., Ogilvy, S., Oldeman, R., Onderwater, C. J. G., Ossowska, A., Goicochea, J. M. Otalora, Owen, P., Oyanguren, A., Pais, P. R., Palano, A., Palutan, M., Papanestis, A., Pappagallo, M., Pappalardo, L. L., Pappenheimer, C., Parker, W., Parkes, C., Passaleva, G., Pastore, A., Patel, M., Patrignani, C., Pearce, A., Pellegrino, A., Penso, G., Altarelli, M. Pepe, Perazzini, S., Perret, P., Pescatore, L., Petridis, K., Petrolini, A., Petrov, A., Petruzzo, M., Olloqui, E. Picatoste, Pietrzyk, B., Pikies, M., Pinci, D., Pistone, A., Piucci, A., Placinta, V., Playfer, S., Casasus, M. Plo, Poikela, T., Polci, F., Lener, M Poli, Poluektov, A., Polyakov, I., Polycarpo, E., Pomery, G. J., Ponce, S., Popov, A., Popov, D., Popovici, B., Poslavskii, S., Potterat, C., Price, E., Prisciandaro, J., Prouve, C., Pugatch, V., Navarro, A. Puig, Punzi, G., Qian, C., Qian, W., Quagliani, R., Rachwal, B., Rademacker, J. H., Rama, M., Pernas, M. Ramos, Rangel, M. S., Raniuk, I., Ratnikov, F., Raven, G., Redi, F., Reichert, S., Reis, A. C. dos, Alepuz, C. Remon, Renaudin, V., Ricciardi, S., Richards, S., Rihl, M., Rinnert, K., Molina, V. Rives, Robbe, P., Rodrigues, A. B., Rodrigues, E., Lopez, J. A. Rodriguez, Perez, P. Rodriguez, Rogozhnikov, A., Roiser, S., Rollings, A., Romanovskiy, V., Vidal, A. Romero, Ronayne, J. W., Rotondo, M., Rudolph, M. S., Ruf, T., Valls, P. Ruiz, Silva, J. J. Saborido, Sadykhov, E., Sagidova, N., Saitta, B., Guimaraes, V. Salustino, Gonzalo, D. Sanchez, Mayordomo, C. Sanchez, Sedes, B. Sanmartin, Santacesaria, R., Rios, C. Santamarina, Santimaria, M., Santovetti, E., Sarti, A., Satriano, C., Satta, A., Saunders, D. M., Savrina, D., Schael, S., Schellenberg, M., Schiller, M., Schindler, H., Schlupp, M., Schmelling, M., Schmelzer, T., Schmidt, B., Schneider, O., Schopper, A., Schreiner, H. F., Schubert, K., Schubiger, M., Schune, M. -H., Schwemmer, R., Sciascia, B., Sciubba, A., Semennikov, A., Sergi, A., Serra, N., Serrano, J., Sestini, L., Seyfert, P., Shapkin, M., Shapoval, I., Shcheglov, Y., Shears, T., Shekhtman, L., Shevchenko, V., Siddi, B. G., Coutinho, R. Silva, de Oliveira, L. Silva, Simi, G., Simone, S., Sirendi, M., Skidmore, N., Skwarnicki, T., Smith, E., Smith, I. T., Smith, J., Smith, M., Lavra, l. Soares, Sokoloff, M. D., Soler, F. J. P., De Paula, B. Souza, Spaan, B., Spradlin, P., Sridharan, S., Stagni, F., Stahl, M., Stahl, S., Stefko, P., Stefkova, S., Steinkamp, O., Stemmle, S., Stenyakin, O., Stevens, H., Stoica, S., Stone, S., Storaci, B., Stracka, S., Stramaglia, M. E., Straticiuc, M., Straumann, U., Sun, L., Sutcliffe, W., Swientek, K., Syropoulos, V., Szczekowski, M., Szumlak, T., T'Jampens, S., Tayduganov, A., Tekampe, T., Tellarini, G., Teubert, F., Thomas, E., van Tilburg, J., Tilley, M. J., Tisserand, V., Tobin, M., Tolk, S., Tomassetti, L., Tonelli, D., Topp-Joergensen, S., Toriello, F., Aoude, R. Tourinho Jadallah, Tournefier, E., Tourneur, S., Trabelsi, K., Traill, M., Tran, M. T., Tresch, M., Trisovic, A., Tsaregorodtsev, A., Tsopelas, P., Tully, A., Tuning, N., Ukleja, A., Ustyuzhanin, A., Uwer, U., Vacca, C., Vagnoni, V., Valassi, A., Valat, S., Valenti, G., Gomez, R. Vazquez, Regueiro, P. Vazquez, Vecchi, S., van Veghel, M., Velthuis, J. J., Veltri, M., Veneziano, G., Venkateswaran, A., Verlage, T. A., Vernet, M., Vesterinen, M., Barbosa, J. V. Viana, Viaud, B., Vieira, D., Diaz, M. Vieites, Viemann, H., Vilasis-Cardona, X., Vitti, M., Volkov, V., Vollhardt, A., Voneki, B., Vorobyev, A., Vorobyev, V., Voß, C., de Vries, J. A., Sierra, C. Vázquez, Waldi, R., Wallace, C., Wallace, R., Walsh, J., Wang, J., Ward, D. R., Wark, H. M., Watson, N. K., Websdale, D., Weiden, A., Whitehead, M., Wicht, J., Wilkinson, G., Wilkinson, M., Williams, M., Williams, M. P., Williams, T., Wilson, F. F., Wimberley, J., Winn, M. A., Wishahi, J., Wislicki, W., Witek, M., Wormser, G., Wotton, S. A., Wraight, K., Wyllie, K., Xie, Y., Xing, Z., Xu, Z., Yang, Z., Yang, Z, Yao, Y., Yin, H., Yu, J., Yuan, X., Yushchenko, O., Zarebski, K. A., Zavertyaev, M., Zhang, L., Zhang, Y., Zhelezov, A., Zheng, Y., Zhu, X., Zhukov, V., and Zucchelli, S.

Subjects
High Energy Physics - Experiment
Abstract

We report on a measurement of the flavor-specific $B^{0}_{s}$ lifetime and of the $D^{-}_{s}$ lifetime using proton-proton collisions at center-of-mass energies of 7 and 8 TeV, collected by the LHCb experiment and corresponding to 3.0 fb$^{-1}$ of integrated luminosity. Approximately 407 000 $B^{0}_{s} \rightarrow D^{(*)-}_{s} \mu^{+}\nu_\mu $ decays are partially reconstructed in the $K^{+}K^{-}\pi^{-}\mu^{+}$ final state. The $B^{0}_{s}$ and $D^{-}_{s}$ natural widths are determined using, as a reference, kinematically similar $B^{0} \rightarrow D^{(*)-}\mu^{+}\nu_\mu$ decays reconstructed in the same final state. The resulting differences between widths of $B^{0}_{s}$ and $B^{0}$ mesons and of $D^{-}_{s}$ and $D^{-}$ mesons are $\Delta_\Gamma(B) =-0.0115 \pm 0.0053 (stat) \pm 0.0041 (syst)$ ps$^{-1}$ and $\Delta_\Gamma(D) = 1.0131 \pm 0.0117 (stat) \pm 0.0065 (syst)$ ps$^{-1}$, respectively. Combined with the known $B^{0}$ and $D^{-}$ lifetimes, these yield the flavor-specific $B^{0}_{s}$ lifetime, $\tau^{\rm fs}_{B^{0}_{s}} = 1.547 \pm 0.013 (stat) \pm 0.010 (syst) \pm 0.004 (\tau_{B})$ ps and the $D^{-}_{s}$ lifetime, $\tau_{D^{-}_{s}} = 0.5064 \pm 0.0030 (stat) \pm 0.0017 (syst) \pm 0.0017 (\tau_{D})$ ps The last uncertainties originate from the limited knowledge of the $B^0$ and $D^{-}$ lifetimes. The results improve upon current determinations., Comment: 16 pages, 8 figures. Minor editorial changes to match the published version. All figures and tables, along with any supplementary material and additional information, are available at https://lhcbproject.web.cern.ch/lhcbproject/Publications/LHCbProjectPublic/LHCb-PAPER-2017-004.html

Published
2017
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31. Observation of charmless baryonic decays $B^0_{(s)} \to p \overline{p} h^+ h^{\prime-}$

Author

LHCb collaboration, Aaij, R., Adeva, B., Adinolfi, M., Ajaltouni, Z., Akar, S., Albrecht, J., Alessio, F., Alexander, M., Ali, S., Alkhazov, G., Cartelle, P. Alvarez, Alves Jr, A. A., Amato, S., Amerio, S., Amhis, Y., An, L., Anderlini, L., Andreassi, G., Andreotti, M., Andrews, J. E., Appleby, R. B., Archilli, F., d'Argent, P., Romeu, J. Arnau, Artamonov, A., Artuso, M., Aslanides, E., Auriemma, G., Baalouch, M., Babuschkin, I., Bachmann, S., Back, J. J., Badalov, A., Baesso, C., Baker, S., Balagura, V., Baldini, W., Baranov, A., Barlow, R. J., Barschel, C., Barsuk, S., Barter, W., Baryshnikov, F., Baszczyk, M., Batozskaya, V., Batsukh, B., Battista, V., Bay, A., Beaucourt, L., Beddow, J., Bedeschi, F., Bediaga, I., Beiter, A., Bel, L. J., Bellee, V., Belloli, N., Belous, K., Belyaev, I., Ben-Haim, E., Bencivenni, G., Benson, S., Beranek, S., Berezhnoy, A., Bernet, R., Bertolin, A., Betancourt, C., Betti, F., Bettler, M. -O., van Beuzekom, M., Bezshyiko, Ia., Bifani, S., Billoir, P., Birnkraut, A., Bitadze, A., Bizzeti, A., Blake, T., Blanc, F., Blouw, J., Blusk, S., Bocci, V., Boettcher, T., Bondar, A., Bondar, N., Bonivento, W., Bordyuzhin, I., Borgheresi, A., Borghi, S., Borisyak, M., Borsato, M., Bossu, F., Boubdir, M., Bowcock, T. J. V., Bowen, E., Bozzi, C., Braun, S., Britton, T., Brodzicka, J., Buchanan, E., Burr, C., Bursche, A., Buytaert, J., Cadeddu, S., Calabrese, R., Calvi, M., Gomez, M. Calvo, Camboni, A., Campana, P., Perez, D. H. Campora, Capriotti, L., Carbone, A., Carboni, G., Cardinale, R., Cardini, A., Carniti, P., Carson, L., Akiba, K. Carvalho, Casse, G., Cassina, L., Garcia, L. Castillo, Cattaneo, M., Cavallero, G., Cenci, R., Chamont, D., Charles, M., Charpentier, Ph., Chatzikonstantinidis, G., Chefdeville, M., Chen, S., Cheung, S. F., Chobanova, V., Chrzaszcz, M., Chubykin, A., Vidal, X. Cid, Ciezarek, G., Clarke, P. E. L., Clemencic, M., Cliff, H. V., Closier, J., Coco, V., Cogan, J., Cogneras, E., Cogoni, V., Cojocariu, L., Collins, P., Comerma-Montells, A., Contu, A., Cook, A., Coombs, G., Coquereau, S., Corti, G., Corvo, M., Sobral, C. M. Costa, Couturier, B., Cowan, G. A., Craik, D. C., Crocombe, A., Torres, M. Cruz, Cunliffe, S., Currie, R., D'Ambrosio, C., Marinho, F. Da Cunha, Dall'Occo, E., Dalseno, J., Davis, A., De Bruyn, K., De Capua, S., De Cian, M., De Miranda, J. M., De Paula, L., De Serio, M., De Simone, P., Dean, C. T., Decamp, D., Deckenhoff, M., Del Buono, L., Dembinski, H. -P., Demmer, M., Dendek, A., Derkach, D., Deschamps, O., Dettori, F., Dey, B., Di Canto, A., Di Nezza, P., Dijkstra, H., Dordei, F., Dorigo, M., Suárez, A. Dosil, Dovbnya, A., Dreimanis, K., Dufour, L., Dujany, G., Dungs, K., Durante, P., Dzhelyadin, R., Dziewiecki, M., Dziurda, A., Dzyuba, A., Déléage, N., Easo, S., Ebert, M., Egede, U., Egorychev, V., Eidelman, S., Eisenhardt, S., Eitschberger, U., Ekelhof, R., Eklund, L., Ely, S., Esen, S., Evans, H. M., Evans, T., Falabella, A., Farley, N., Farry, S., Fay, R., Fazzini, D., Ferguson, D., Fernandez, G., Prieto, A. Fernandez, Ferrari, F., Rodrigues, F. Ferreira, Ferro-Luzzi, M., Filippov, S., Fini, R. A., Fiore, M., Fiorini, M., Firlej, M., Fitzpatrick, C., Fiutowski, T., Fleuret, F., Fohl, K., Fontana, M., Fontanelli, F., Forshaw, D. C., Forty, R., Lima, V. Franco, Frank, M., Frei, C., Fu, J., Funk, W., Furfaro, E., Färber, C., Torreira, A. Gallas, Galli, D., Gallorini, S., Gambetta, S., Gandelman, M., Gandini, P., Gao, Y., Martin, L. M. Garcia, Pardiñas, J. García, Tico, J. Garra, Garrido, L., Garsed, P. J., Gascon, D., Gaspar, C., Gavardi, L., Gazzoni, G., Gerick, D., Gersabeck, E., Gersabeck, M., Gershon, T., Ghez, Ph., Gianì, S., Gibson, V., Girard, O. G., Giubega, L., Gizdov, K., Gligorov, V. V., Golubkov, D., Golutvin, A., Gomes, A., Gorelov, I. V., Gotti, C., Govorkova, E., Diaz, R. Graciani, Cardoso, L. A. Granado, Graugés, E., Graverini, E., Graziani, G., Grecu, A., Greim, R., Griffith, P., Grillo, L., Cazon, B. R. Gruberg, Grünberg, O., Gushchin, E., Guz, Yu., Gys, T., Göbel, C., Hadavizadeh, T., Hadjivasiliou, C., Haefeli, G., Haen, C., Haines, S. C., Hamilton, B., Han, X., Hansmann-Menzemer, S., Harnew, N., Harnew, S. T., Harrison, J., Hatch, M., He, J., Head, T., Heister, A., Hennessy, K., Henrard, P., Henry, L., van Herwijnen, E., Heß, M., Hicheur, A., Hill, D., Hombach, C., Hopchev, P. 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Subjects
High Energy Physics - Experiment
Abstract

Decays of $B^0$ and $B_{s}^0$ mesons to the charmless baryonic final states $p \overline{p} h^+ h^{\prime-}$, where $h$ and $h^\prime$ each denote a kaon or a pion, are searched for using the LHCb detector. The analysis is based on a sample of proton-proton collision data collected at center-of-mass energies of $7$ and $8\,$TeV, corresponding to an integrated luminosity of $3\,$fb$^{-1}$. Four-body charmless baryonic $B_{s}^0$ decays are observed for the first time. The decays $B^0_{s}\to p \overline{p} K^+ K^-$, $B^0_{s}\to p \overline{p} K^\pm \pi^\mp$, $B^0\to p \overline{p} K^\pm \pi^\mp$ and $B^0\to p \overline{p} \pi^+\pi^-$ are observed with a significance greater than $5$ standard deviations; evidence at $4.1$ standard deviations is found for the $B^0\to p \overline{p} K^+ K^-$ decay and an upper limit is set on the branching fraction for $B^0_{s}\to p \overline{p} \pi^+ \pi^-$. Branching fractions in the kinematic region $m(p \overline{p})<2850\,$MeV$/c^2$ are measured relative to the $B^0 \to J/\psi (\to p \overline{p}) K^*(892)^0$ channel., Comment: All figures and tables, along with any supplementary material and additional information, are available at https://lhcbproject.web.cern.ch/lhcbproject/Publications/LHCbProjectPublic/LHCb-PAPER-2017-005.html

Published
2017
Full Text
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32. Resonances and $CP$ violation in $B_s^0$ and $\overline{B}_s^0 \to J/\psi K^+K^-$ decays in the mass region above the $\phi(1020)$

Author

LHCb collaboration, Aaij, R., Adeva, B., Adinolfi, M., Ajaltouni, Z., Akar, S., Albrecht, J., Alessio, F., Alexander, M., Ali, S., Alkhazov, G., Cartelle, P. Alvarez, Alves Jr, A. A., Amato, S., Amerio, S., Amhis, Y., An, L., Anderlini, L., Andreassi, G., Andreotti, M., Andrews, J. E., Appleby, R. B., Archilli, F., d'Argent, P., Romeu, J. Arnau, Artamonov, A., Artuso, M., Aslanides, E., Auriemma, G., Baalouch, M., Babuschkin, I., Bachmann, S., Back, J. J., Badalov, A., Baesso, C., Baker, S., Balagura, V., Baldini, W., Baranov, A., Barlow, R. J., Barschel, C., Barsuk, S., Barter, W., Baryshnikov, F., Baszczyk, M., Batozskaya, V., Battista, V., Bay, A., Beaucourt, L., Beddow, J., Bedeschi, F., Bediaga, I., Beiter, A., Bel, L. J., Bellee, V., Belloli, N., Belous, K., Belyaev, I., Ben-Haim, E., Bencivenni, G., Benson, S., Beranek, S., Berezhnoy, A., Bernet, R., Bertolin, A., Betancourt, C., Betti, F., Bettler, M. -O., van Beuzekom, M., Bezshyiko, Ia., Bifani, S., Billoir, P., Birnkraut, A., Bitadze, A., Bizzeti, A., Blake, T., Blanc, F., Blouw, J., Blusk, S., Bocci, V., Boettcher, T., Bondar, A., Bondar, N., Bonivento, W., Bordyuzhin, I., Borgheresi, A., Borghi, S., Borisyak, M., Borsato, M., Bossu, F., Boubdir, M., Bowcock, T. J. V., Bowen, E., Bozzi, C., Braun, S., Britton, T., Brodzicka, J., Buchanan, E., Burr, C., Bursche, A., Buytaert, J., Cadeddu, S., Calabrese, R., Calvi, M., Gomez, M. Calvo, Camboni, A., Campana, P., Perez, D. H. Campora, Capriotti, L., Carbone, A., Carboni, G., Cardinale, R., Cardini, A., Carniti, P., Carson, L., Akiba, K. Carvalho, Casse, G., Cassina, L., Garcia, L. Castillo, Cattaneo, M., Cavallero, G., Cenci, R., Chamont, D., Charles, M., Charpentier, Ph., Chatzikonstantinidis, G., Chefdeville, M., Chen, S., Cheung, S. F., Chobanova, V., Chrzaszcz, M., Chubykin, A., Vidal, X. Cid, Ciezarek, G., Clarke, P. E. L., Clemencic, M., Cliff, H. V., Closier, J., Coco, V., Cogan, J., Cogneras, E., Cogoni, V., Cojocariu, L., Collins, P., Comerma-Montells, A., Contu, A., Cook, A., Coombs, G., Coquereau, S., Corti, G., Corvo, M., Sobral, C. M. Costa, Couturier, B., Cowan, G. A., Craik, D. C., Crocombe, A., Torres, M. Cruz, Cunliffe, S., Currie, R., D'Ambrosio, C., Marinho, F. Da Cunha, Dall'Occo, E., Dalseno, J., Davis, A., De Bruyn, K., De Capua, S., De Cian, M., De Miranda, J. M., De Paula, L., De Serio, M., De Simone, P., Dean, C. T., Decamp, D., Deckenhoff, M., Del Buono, L., Dembinski, H. -P., Demmer, M., Dendek, A., Derkach, D., Deschamps, O., Dettori, F., Dey, B., Di Canto, A., Di Nezza, P., Dijkstra, H., Dordei, F., Dorigo, M., Suárez, A. 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Picatoste, Pietrzyk, B., Pikies, M., Pinci, D., Pistone, A., Piucci, A., Placinta, V., Playfer, S., Casasus, M. Plo, Poikela, T., Polci, F., Lener, M. Poli, Poluektov, A., Polyakov, I., Polycarpo, E., Pomery, G. J., Ponce, S., Popov, A., Popov, D., Popovici, B., Poslavskii, S., Potterat, C., Price, E., Prisciandaro, J., Prouve, C., Pugatch, V., Navarro, A. Puig, Punzi, G., Qian, C., Qian, W., Quagliani, R., Rachwal, B., Rademacker, J. H., Rama, M., Pernas, M. Ramos, Rangel, M. S., Raniuk, I., Ratnikov, F., Raven, G., Redi, F., Reichert, S., Reis, A. C. dos, Alepuz, C. Remon, Renaudin, V., Ricciardi, S., Richards, S., Rihl, M., Rinnert, K., Molina, V. Rives, Robbe, P., Rodrigues, A. B., Rodrigues, E., Lopez, J. A. Rodriguez, Perez, P. Rodriguez, Rogozhnikov, A., Roiser, S., Rollings, A., Romanovskiy, V., Vidal, A. Romero, Ronayne, J. W., Rotondo, M., Rudolph, M. S., Ruf, T., Valls, P. Ruiz, Silva, J. J. Saborido, Sadykhov, E., Sagidova, N., Saitta, B., Guimaraes, V. Salustino, Gonzalo, D. Sanchez, Mayordomo, C. Sanchez, Sedes, B. Sanmartin, Santacesaria, R., Rios, C. Santamarina, Santimaria, M., Santovetti, E., Sarti, A., Satriano, C., Satta, A., Saunders, D. M., Savrina, D., Schael, S., Schellenberg, M., Schiller, M., Schindler, H., Schlupp, M., Schmelling, M., Schmelzer, T., Schmidt, B., Schneider, O., Schopper, A., Schreiner, H. F., Schubert, K., Schubiger, M., Schune, M. -H., Schwemmer, R., Sciascia, B., Sciubba, A., Semennikov, A., Sergi, A., Serra, N., Serrano, J., Sestini, L., Seyfert, P., Shapkin, M., Shapoval, I., Shcheglov, Y., Shears, T., Shekhtman, L., Shevchenko, V., Siddi, B. G., Coutinho, R. Silva, de Oliveira, L. Silva, Simi, G., Simone, S., Sirendi, M., Skidmore, N., Skwarnicki, T., Smith, E., Smith, I. T., Smith, J., Smith, M., Lavra, l. Soares, Sokoloff, M. D., Soler, F. J. P., De Paula, B. Souza, Spaan, B., Spradlin, P., Sridharan, S., Stagni, F., Stahl, M., Stahl, S., Stefko, P., Stefkova, S., Steinkamp, O., Stemmle, S., Stenyakin, O., Stevens, H., Stoica, S., Stone, S., Storaci, B., Stracka, S., Stramaglia, M. E., Straticiuc, M., Straumann, U., Sun, L., Sutcliffe, W., Swientek, K., Syropoulos, V., Szczekowski, M., Szumlak, T., T'Jampens, S., Tayduganov, A., Tekampe, T., Tellarini, G., Teubert, F., Thomas, E., van Tilburg, J., Tilley, M. J., Tisserand, V., Tobin, M., Tolk, S., Tomassetti, L., Tonelli, D., Topp-Joergensen, S., Toriello, F., Aoude, R. Tourinho Jadallah, Tournefier, E., Tourneur, S., Trabelsi, K., Traill, M., Tran, M. T., Tresch, M., Trisovic, A., Tsaregorodtsev, A., Tsopelas, P., Tully, A., Tuning, N., Ukleja, A., Ustyuzhanin, A., Uwer, U., Vacca, C., Vagnoni, V., Valassi, A., Valat, S., Valenti, G., Gomez, R. Vazquez, Regueiro, P. Vazquez, Vecchi, S., van Veghel, M., Velthuis, J. J., Veltri, M., Veneziano, G., Venkateswaran, A., Verlage, T. A., Vernet, M., Vesterinen, M., Barbosa, J. V. Viana, Viaud, B., Vieira, D., Diaz, M. Vieites, Viemann, H., Vilasis-Cardona, X., Vitti, M., Volkov, V., Vollhardt, A., Voneki, B., Vorobyev, A., Vorobyev, V., Voß, C., de Vries, J. A., Sierra, C. Vázquez, Waldi, R., Wallace, C., Wallace, R., Walsh, J., Wang, J., Ward, D. R., Wark, H. M., Watson, N. K., Websdale, D., Weiden, A., Whitehead, M., Wicht, J., Wilkinson, G., Wilkinson, M., Williams, M., Williams, M. P., Williams, T., Wilson, F. F., Wimberley, J., Winn, M. A., Wishahi, J., Wislicki, W., Witek, M., Wormser, G., Wotton, S. A., Wraight, K., Wyllie, K., Xie, Y., Xu, Z., Yang, Z., Yao, Y., Yin, H., Yu, J., Yuan, X., Yushchenko, O., Zarebski, K. A., Zavertyaev, M., Zhang, L., Zhang, Y., Zhelezov, A., Zheng, Y., Zhu, X., Zhukov, V., and Zucchelli, S.

Subjects
High Energy Physics - Experiment
Abstract

The decays of $B_s^0$ and $\overline{B}_s^0$ mesons into the $J/\psi K^+K^-$ final state are studied in the $K^+K^-$ mass region above the $\phi(1020)$ meson in order to determine the resonant substructure and measure the $CP$-violating phase, $\phi_s$, the decay width, $\Gamma_s$, and the width difference between light and heavy mass eigenstates, $\Delta\Gamma_s$. A decay-time dependent amplitude analysis is employed. The data sample corresponds to an integrated luminosity of $3{\rm fb}^{-1}$ produced in 7 and 8 Tev $pp$ collisions at the LHC, collected by the LHCb experiment. The measurement determines $\phi_s = 119\pm107\pm34 {\rm \, mrad}$. A combination with previous LHCb measurements using similar decays into the $J/\psi \pi^+\pi^-$ and $J/\psi\phi(1020)$ final states gives $\phi_s=1\pm37 {\rm \,mrad}$, consistent with the Standard Model prediction., Comment: All figures and tables, along with any supplementary material and additional information, are available at https://lhcbproject.web.cern.ch/lhcbproject/Publications/LHCbProjectPublic/LHCb-PAPER-2017-008.html

Published
2017
Full Text
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33. First observation of a baryonic $B_s^0$ decay

Author

LHCb collaboration, Aaij, R., Adeva, B., Adinolfi, M., Ajaltouni, Z., Akar, S., Albrecht, J., Alessio, F., Alexander, M., Ali, S., Alkhazov, G., Cartelle, P. Alvarez, Alves Jr, A. A., Amato, S., Amerio, S., Amhis, Y., An, L., Anderlini, L., Andreassi, G., Andreotti, M., Andrews, J. E., Appleby, R. B., Archilli, F., d'Argent, P., Romeu, J. Arnau, Artamonov, A., Artuso, M., Aslanides, E., Auriemma, G., Baalouch, M., Babuschkin, I., Bachmann, S., Back, J. J., Badalov, A., Baesso, C., Baker, S., Balagura, V., Baldini, W., Baranov, A., Barlow, R. J., Barschel, C., Barsuk, S., Barter, W., Baryshnikov, F., Baszczyk, M., Batozskaya, V., Battista, V., Bay, A., Beaucourt, L., Beddow, J., Bedeschi, F., Bediaga, I., Beiter, A., Bel, L. J., Bellee, V., Belloli, N., Belous, K., Belyaev, I., Ben-Haim, E., Bencivenni, G., Benson, S., Beranek, S., Berezhnoy, A., Bernet, R., Bertolin, A., Betancourt, C., Betti, F., Bettler, M. -O., van Beuzekom, M., Bezshyiko, Ia., Bifani, S., Billoir, P., Birnkraut, A., Bitadze, A., Bizzeti, A., Blake, T., Blanc, F., Blouw, J., Blusk, S., Bocci, V., Boettcher, T., Bondar, A., Bondar, N., Bonivento, W., Bordyuzhin, I., Borgheresi, A., Borghi, S., Borisyak, M., Borsato, M., Bossu, F., Boubdir, M., Bowcock, T. J. V., Bowen, E., Bozzi, C., Braun, S., Britton, T., Brodzicka, J., Buchanan, E., Burr, C., Bursche, A., Buytaert, J., Cadeddu, S., Calabrese, R., Calvi, M., Gomez, M. Calvo, Camboni, A., Campana, P., Perez, D. H. Campora, Capriotti, L., Carbone, A., Carboni, G., Cardinale, R., Cardini, A., Carniti, P., Carson, L., Akiba, K. Carvalho, Casse, G., Cassina, L., Garcia, L. Castillo, Cattaneo, M., Cavallero, G., Cenci, R., Chamont, D., Charles, M., Charpentier, Ph., Chatzikonstantinidis, G., Chefdeville, M., Chen, S., Cheung, S. F., Chobanova, V., Chrzaszcz, M., Chubykin, A., Vidal, X. Cid, Ciezarek, G., Clarke, P. E. L., Clemencic, M., Cliff, H. V., Closier, J., Coco, V., Cogan, J., Cogneras, E., Cogoni, V., Cojocariu, L., Collins, P., Comerma-Montells, A., Contu, A., Cook, A., Coombs, G., Coquereau, S., Corti, G., Corvo, M., Sobral, C. M. Costa, Couturier, B., Cowan, G. A., Craik, D. C., Crocombe, A., Torres, M. Cruz, Cunliffe, S., Currie, R., D'Ambrosio, C., Marinho, F. Da Cunha, Dall'Occo, E., Dalseno, J., Davis, A., Francisco, O. De Aguiar, De Bruyn, K., De Capua, S., De Cian, M., De Miranda, J. M., De Paula, L., De Serio, M., De Simone, P., Dean, C. T., Decamp, D., Deckenhoff, M., Del Buono, L., Dembinski, H. -P., Demmer, M., Dendek, A., Derkach, D., Deschamps, O., Dettori, F., Dey, B., Di Canto, A., Di Nezza, P., Dijkstra, H., Dordei, F., Dorigo, M., Suárez, A. Dosil, Dovbnya, A., Dreimanis, K., Dufour, L., Dujany, G., Dungs, K., Durante, P., Dzhelyadin, R., Dziewiecki, M., Dziurda, A., Dzyuba, A., Déléage, N., Easo, S., Ebert, M., Egede, U., Egorychev, V., Eidelman, S., Eisenhardt, S., Eitschberger, U., Ekelhof, R., Eklund, L., Ely, S., Esen, S., Evans, H. M., Evans, T., Falabella, A., Farley, N., Farry, S., Fay, R., Fazzini, D., Ferguson, D., Fernandez, G., Prieto, A. Fernandez, Ferrari, F., Rodrigues, F. Ferreira, Ferro-Luzzi, M., Filippov, S., Fini, R. A., Fiore, M., Fiorini, M., Firlej, M., Fitzpatrick, C., Fiutowski, T., Fleuret, F., Fohl, K., Fontana, M., Fontanelli, F., Forshaw, D. C., Forty, R., Lima, V. Franco, Frank, M., Frei, C., Fu, J., Funk, W., Furfaro, E., Färber, C., Gabriel, E., Torreira, A. Gallas, Galli, D., Gallorini, S., Gambetta, S., Gandelman, M., Gandini, P., Gao, Y., Martin, L. M. Garcia, Pardiñas, J. García, Tico, J. Garra, Garrido, L., Garsed, P. J., Gascon, D., Gaspar, C., Gavardi, L., Gazzoni, G., Gerick, D., Gersabeck, E., Gersabeck, M., Gershon, T., Ghez, Ph., Gianì, S., Gibson, V., Girard, O. G., Giubega, L., Gizdov, K., Gligorov, V. V., Golubkov, D., Golutvin, A., Gomes, A., Gorelov, I. V., Gotti, C., Govorkova, E., Diaz, R. Graciani, Cardoso, L. A. Granado, Graugés, E., Graverini, E., Graziani, G., Grecu, A., Greim, R., Griffith, P., Grillo, L., Gruber, L., Cazon, B. R. Gruberg, Grünberg, O., Gushchin, E., Guz, Yu., Gys, T., Göbel, C., Hadavizadeh, T., Hadjivasiliou, C., Haefeli, G., Haen, C., Haines, S. C., Hamilton, B., Han, X., Hansmann-Menzemer, S., Harnew, N., Harnew, S. T., Harrison, J., Hatch, M., He, J., Head, T., Heister, A., Hennessy, K., Henrard, P., Henry, L., van Herwijnen, E., Heß, M., Hicheur, A., Hill, D., Hombach, C., Hopchev, P. H., Huard, Z. -C., Hulsbergen, W., Humair, T., Hushchyn, M., Hutchcroft, D., Idzik, M., Ilten, P., Jacobsson, R., Jalocha, J., Jans, E., Jawahery, A., Jiang, F., John, M., Johnson, D., Jones, C. R., Joram, C., Jost, B., Jurik, N., Kandybei, S., Karacson, M., Kariuki, J. M., Karodia, S., Kecke, M., Kelsey, M., Kenzie, M., Ketel, T., Khairullin, E., Khanji, B., Khurewathanakul, C., Kirn, T., Klaver, S., Klimaszewski, K., Klimkovich, T., Koliiev, S., Kolpin, M., Komarov, I., Kopecna, R., Koppenburg, P., Kosmyntseva, A., Kotriakhova, S., Kozeiha, M., Kravchuk, L., Kreps, M., Krokovny, P., Kruse, F., Krzemien, W., Kucewicz, W., Kucharczyk, M., Kudryavtsev, V., Kuonen, A. K., Kurek, K., Kvaratskheliya, T., Lacarrere, D., Lafferty, G., Lai, A., Lanfranchi, G., Langenbruch, C., Latham, T., Lazzeroni, C., Gac, R. Le, van Leerdam, J., Leflat, A., Lefrançois, J., Lefèvre, R., Lemaitre, F., Cid, E. Lemos, Leroy, O., Lesiak, T., Leverington, B., Li, T., Li, Y., Li, Z., Likhomanenko, T., Lindner, R., Lionetto, F., Liu, X., Loh, D., Longstaff, I., Lopes, J. H., Lucchesi, D., Martinez, M. Lucio, Luo, H., Lupato, A., Luppi, E., Lupton, O., Lusiani, A., Lyu, X., Machefert, F., Maciuc, F., Maddock, B., Maev, O., Maguire, K., Malde, S., Malinin, A., Maltsev, T., Manca, G., Mancinelli, G., Manning, P., Maratas, J., Marchand, J. F., Marconi, U., Benito, C. Marin, Marinangeli, M., Marino, P., Marks, J., Martellotti, G., Martin, M., Martinelli, M., Santos, D. Martinez, Vidal, F. Martinez, Tostes, D. Martins, Massacrier, L. M., Massafferri, A., Matev, R., Mathad, A., Mathe, Z., Matteuzzi, C., Mauri, A., Maurice, E., Maurin, B., Mazurov, A., McCann, M., McNab, A., McNulty, R., Meadows, B., Meier, F., Melnychuk, D., Merk, M., Merli, A., Michielin, E., Milanes, D. A., Minard, M. -N., Mitzel, D. S., Mogini, A., Rodriguez, J. Molina, Monroy, I. A., Monteil, S., Morandin, M., Morello, M. J., Morgunova, O., Moron, J., Morris, A. B., Mountain, R., Muheim, F., Mulder, M., Mussini, M., Müller, D., Müller, J., Müller, K., Müller, V., Naik, P., Nakada, T., Nandakumar, R., Nandi, A., Nasteva, I., Needham, M., Neri, N., Neubert, S., Neufeld, N., Neuner, M., Nguyen, T. D., Nguyen-Mau, C., Nieswand, S., Niet, R., Nikitin, N., Nikodem, T., Nogay, A., O'Hanlon, D. P., Oblakowska-Mucha, A., Obraztsov, V., Ogilvy, S., Oldeman, R., Onderwater, C. J. G., Ossowska, A., Goicochea, J. M. Otalora, Owen, P., Oyanguren, A., Pais, P. R., Palano, A., Palutan, M., Papanestis, A., Pappagallo, M., Pappalardo, L. L., Pappenheimer, C., Parker, W., Parkes, C., Passaleva, G., Pastore, A., Patel, M., Patrignani, C., Pearce, A., Pellegrino, A., Penso, G., Altarelli, M. Pepe, Perazzini, S., Perret, P., Pescatore, L., Petridis, K., Petrolini, A., Petrov, A., Petruzzo, M., Olloqui, E. Picatoste, Pietrzyk, B., Pikies, M., Pinci, D., Pistone, A., Piucci, A., Placinta, V., Playfer, S., Casasus, M. Plo, Poikela, T., Polci, F., Lener, M. Poli, Poluektov, A., Polyakov, I., Polycarpo, E., Pomery, G. J., Ponce, S., Popov, A., Popov, D., Popovici, B., Poslavskii, S., Potterat, C., Price, E., Prisciandaro, J., Prouve, C., Pugatch, V., Navarro, A. Puig, Punzi, G., Qian, C., Qian, W., Quagliani, R., Rachwal, B., Rademacker, J. H., Rama, M., Pernas, M. Ramos, Rangel, M. S., Raniuk, I., Ratnikov, F., Raven, G., Salzgeber, M. Ravonel, Reboud, M., Redi, F., Reichert, S., Reis, A. C. dos, Alepuz, C. Remon, Renaudin, V., Ricciardi, S., Richards, S., Rihl, M., Rinnert, K., Molina, V. Rives, Robbe, P., Rodrigues, A. B., Rodrigues, E., Lopez, J. A. Rodriguez, Perez, P. Rodriguez, Rogozhnikov, A., Roiser, S., Rollings, A., Romanovskiy, V., Vidal, A. Romero, Ronayne, J. W., Rotondo, M., Rudolph, M. S., Ruf, T., Valls, P. Ruiz, Silva, J. J. Saborido, Sadykhov, E., Sagidova, N., Saitta, B., Guimaraes, V. Salustino, Gonzalo, D. Sanchez, Mayordomo, C. Sanchez, Sedes, B. Sanmartin, Santacesaria, R., Rios, C. Santamarina, Santimaria, M., Santovetti, E., Sarti, A., Satriano, C., Satta, A., Saunders, D. M., Savrina, D., Schael, S., Schellenberg, M., Schiller, M., Schindler, H., Schlupp, M., Schmelling, M., Schmelzer, T., Schmidt, B., Schneider, O., Schopper, A., Schreiner, H. F., Schubert, K., Schubiger, M., Schune, M. -H., Schwemmer, R., Sciascia, B., Sciubba, A., Semennikov, A., Sergi, A., Serra, N., Serrano, J., Sestini, L., Seyfert, P., Shapkin, M., Shapoval, I., Shcheglov, Y., Shears, T., Shekhtman, L., Shevchenko, V., Siddi, B. G., Coutinho, R. Silva, de Oliveira, L. Silva, Simi, G., Simone, S., Sirendi, M., Skidmore, N., Skwarnicki, T., Smith, E., Smith, I. T., Smith, J., Smith, M., Lavra, l. Soares, Sokoloff, M. D., Soler, F. J. P., De Paula, B. Souza, Spaan, B., Spradlin, P., Sridharan, S., Stagni, F., Stahl, M., Stahl, S., Stefko, P., Stefkova, S., Steinkamp, O., Stemmle, S., Stenyakin, O., Stevens, H., Stoica, S., Stone, S., Storaci, B., Stracka, S., Stramaglia, M. E., Straticiuc, M., Straumann, U., Sun, L., Sutcliffe, W., Swientek, K., Syropoulos, V., Szczekowski, M., Szumlak, T., T'Jampens, S., Tayduganov, A., Tekampe, T., Tellarini, G., Teubert, F., Thomas, E., van Tilburg, J., Tilley, M. J., Tisserand, V., Tobin, M., Tolk, S., Tomassetti, L., Tonelli, D., Topp-Joergensen, S., Toriello, F., Aoude, R. Tourinho Jadallah, Tournefier, E., Tourneur, S., Trabelsi, K., Traill, M., Tran, M. T., Tresch, M., Trisovic, A., Tsaregorodtsev, A., Tsopelas, P., Tully, A., Tuning, N., Ukleja, A., Ustyuzhanin, A., Uwer, U., Vacca, C., Vagner, A., Vagnoni, V., Valassi, A., Valat, S., Valenti, G., Gomez, R. Vazquez, Regueiro, P. Vazquez, Vecchi, S., van Veghel, M., Velthuis, J. J., Veltri, M., Veneziano, G., Venkateswaran, A., Verlage, T. A., Vernet, M., Vesterinen, M., Barbosa, J. V. Viana, Viaud, B., Vieira, D., Diaz, M. Vieites, Viemann, H., Vilasis-Cardona, X., Vitti, M., Volkov, V., Vollhardt, A., Voneki, B., Vorobyev, A., Vorobyev, V., Voß, C., de Vries, J. A., Sierra, C. Vázquez, Waldi, R., Wallace, C., Wallace, R., Walsh, J., Wang, J., Ward, D. R., Wark, H. M., Watson, N. K., Websdale, D., Weiden, A., Whitehead, M., Wicht, J., Wilkinson, G., Wilkinson, M., Williams, M., Williams, M. P., Williams, T., Wilson, F. F., Wimberley, J., Winn, M. A., Wishahi, J., Wislicki, W., Witek, M., Wormser, G., Wotton, S. A., Wraight, K., Wyllie, K., Xie, Y., Xu, Z., Yang, Z., Yao, Y., Yin, H., Yu, J., Yuan, X., Yushchenko, O., Zarebski, K. A., Zavertyaev, M., Zhang, L., Zhang, Y., Zhelezov, A., Zheng, Y., Zhu, X., Zhukov, V., Zonneveld, J. B., and Zucchelli, S.

Subjects
High Energy Physics - Experiment
Abstract

We report the first observation of a baryonic $B_s^0$ decay, $B_s^0 \to p \kern 0.1em\overline{\kern -0.1em\Lambda} K^-$, using proton-proton collision data recorded by the LHCb experiment at center-of-mass energies of 7 and 8 TeV, corresponding to an integrated luminosity of $3.0\,\mathrm{fb}^{-1}$. The branching fraction is measured to be $ \mathcal{B}(B_s^0 \to p \kern 0.1em\overline{\kern -0.1em\Lambda} K^-) + \mathcal{B}(B_s^0 \to \bar{p} \Lambda K^+) = \left[5.46 \pm 0.61 \pm 0.57 \pm 0.50 (\mathcal{B}) \pm 0.32 (f_s/f_d)\right]\times 10^{-6}, $ where the first uncertainty is statistical and the second systematic, the third uncertainty accounts for the experimental uncertainty on the branching fraction of the $B^0 \to p \kern 0.1em\overline{\kern -0.1em\Lambda} \pi^-$ decay used for normalization, and the fourth uncertainty relates to the knowledge of the ratio of $b$-quark hadronization probabilities $f_s/f_d$., Comment: All figures and tables, along with any supplementary material and additional information, are available at https://lhcbproject.web.cern.ch/lhcbproject/Publications/LHCbProjectPublic/LHCb-PAPER-2017-012.html

Published
2017
Full Text
View/download PDF

34. Observation of the $B^+ \to D^{*-}K^+\pi^+$ decay

Author

LHCb collaboration, Aaij, R., Adeva, B., Adinolfi, M., Ajaltouni, Z., Akar, S., Albrecht, J., Alessio, F., Alexander, M., Ali, S., Alkhazov, G., Cartelle, P. Alvarez, Alves Jr, A. A., Amato, S., Amerio, S., Amhis, Y., An, L., Anderlini, L., Andreassi, G., Andreotti, M., Andrews, J. E., Appleby, R. B., Archilli, F., d'Argent, P., Romeu, J. Arnau, Artamonov, A., Artuso, M., Aslanides, E., Auriemma, G., Baalouch, M., Babuschkin, I., Bachmann, S., Back, J. J., Badalov, A., Baesso, C., Baker, S., Balagura, V., Baldini, W., Baranov, A., Barlow, R. J., Barschel, C., Barsuk, S., Barter, W., Baryshnikov, F., Baszczyk, M., Batozskaya, V., Battista, V., Bay, A., Beaucourt, L., Beddow, J., Bedeschi, F., Bediaga, I., Beiter, A., Bel, L. J., Bellee, V., Belloli, N., Belous, K., Belyaev, I., Ben-Haim, E., Bencivenni, G., Benson, S., Beranek, S., Berezhnoy, A., Bernet, R., Bertolin, A., Betancourt, C., Betti, F., Bettler, M. -O., van Beuzekom, M., Bezshyiko, Ia., Bifani, S., Billoir, P., Birnkraut, A., Bitadze, A., Bizzeti, A., Blake, T., Blanc, F., Blouw, J., Blusk, S., Bocci, V., Boettcher, T., Bondar, A., Bondar, N., Bonivento, W., Bordyuzhin, I., Borgheresi, A., Borghi, S., Borisyak, M., Borsato, M., Bossu, F., Boubdir, M., Bowcock, T. J. V., Bowen, E., Bozzi, C., Braun, S., Britton, T., Brodzicka, J., Buchanan, E., Burr, C., Bursche, A., Buytaert, J., Cadeddu, S., Calabrese, R., Calvi, M., Gomez, M. Calvo, Camboni, A., Campana, P., Perez, D. H. Campora, Capriotti, L., Carbone, A., Carboni, G., Cardinale, R., Cardini, A., Carniti, P., Carson, L., Akiba, K. Carvalho, Casse, G., Cassina, L., Garcia, L. Castillo, Cattaneo, M., Cavallero, G., Cenci, R., Chamont, D., Charles, M., Charpentier, Ph., Chatzikonstantinidis, G., Chefdeville, M., Chen, S., Cheung, S. -F., Chobanova, V., Chrzaszcz, M., Chubykin, A., Vidal, X. Cid, Ciezarek, G., Clarke, P. E. L., Clemencic, M., Cliff, H. V., Closier, J., Coco, V., Cogan, J., Cogneras, E., Cogoni, V., Cojocariu, L., Collins, P., Comerma-Montells, A., Contu, A., Cook, A., Coombs, G., Coquereau, S., Corti, G., Corvo, M., Sobral, C. M. Costa, Couturier, B., Cowan, G. A., Craik, D. C., Crocombe, A., Torres, M. Cruz, Cunliffe, S., Currie, R., D'Ambrosio, C., Marinho, F. Da Cunha, Dall'Occo, E., Dalseno, J., Davis, A., De Bruyn, K., De Capua, S., De Cian, M., De Miranda, J. M., De Paula, L., De Serio, M., De Simone, P., Dean, C. T., Decamp, D., Deckenhoff, M., Del Buono, L., Dembinski, H. -P., Demmer, M., Dendek, A., Derkach, D., Deschamps, O., Dettori, F., Dey, B., Di Canto, A., Di Nezza, P., Dijkstra, H., Dordei, F., Dorigo, M., Suárez, A. 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J., Gascon, D., Gaspar, C., Gavardi, L., Gazzoni, G., Gerick, D., Gersabeck, E., Gersabeck, M., Gershon, T., Ghez, Ph., Gianì, S., Gibson, V., Girard, O. G., Giubega, L., Gizdov, K., Gligorov, V. V., Golubkov, D., Golutvin, A., Gomes, A., Gorelov, I. V., Gotti, C., Govorkova, E., Diaz, R. Graciani, Cardoso, L. A. Granado, Graugés, E., Graverini, E., Graziani, G., Grecu, A., Greim, R., Griffith, P., Grillo, L., Cazon, B. R. Gruberg, Grünberg, O., Gushchin, E., Guz, Yu., Gys, T., Göbel, C., Hadavizadeh, T., Hadjivasiliou, C., Haefeli, G., Haen, C., Haines, S. C., Hamilton, B., Han, X., Hansmann-Menzemer, S., Harnew, N., Harnew, S. T., Harrison, J., Hatch, M., He, J., Head, T., Heister, A., Hennessy, K., Henrard, P., Henry, L., van Herwijnen, E., Heß, M., Hicheur, A., Hill, D., Hombach, C., Hopchev, H., Huard, Z. -C., Hulsbergen, W., Humair, T., Hushchyn, M., Hutchcroft, D., Idzik, M., Ilten, P., Jacobsson, R., Jalocha, J., Jans, E., Jawahery, A., Jiang, F., John, M., Johnson, D., Jones, C. R., Joram, C., Jost, B., Jurik, N., Kandybei, S., Karacson, M., Kariuki, J. M., Karodia, S., Kecke, M., Kelsey, M., Kenzie, M., Ketel, T., Khairullin, E., Khanji, B., Khurewathanakul, C., Kirn, T., Klaver, S., Klimaszewski, K., Klimkovich, T., Koliiev, S., Kolpin, M., Komarov, I., Kopecna, R., Koppenburg, P., Kosmyntseva, A., Kotriakhova, S., Kozachuk, A., Kozeiha, M., Kravchuk, L., Kreps, M., Krokovny, P., Kruse, F., Krzemien, W., Kucewicz, W., Kucharczyk, M., Kudryavtsev, V., Kuonen, A. K., Kurek, K., Kvaratskheliya, T., Lacarrere, D., Lafferty, G., Lai, A., Lanfranchi, G., Langenbruch, C., Latham, T., Lazzeroni, C., Gac, R. Le, van Leerdam, J., Leflat, A., Lefrançois, J., Lefèvre, R., Lemaitre, F., Cid, E. Lemos, Leroy, O., Lesiak, T., Leverington, B., Li, T., Li, Y., Li, Z., Likhomanenko, T., Lindner, R., Lionetto, F., Liu, X., Loh, D., Longstaff, I., Lopes, J. H., Lucchesi, D., Martinez, M. Lucio, Luo, H., Lupato, A., Luppi, E., Lupton, O., Lusiani, A., Lyu, X., Machefert, F., Maciuc, F., Maev, O., Maguire, K., Malde, S., Malinin, A., Maltsev, T., Manca, G., Mancinelli, G., Manning, P., Maratas, J., Marchand, J. F., Marconi, U., Benito, C. Marin, Marinangeli, M., Marino, P., Marks, J., Martellotti, G., Martin, M., Martinelli, M., Santos, D. Martinez, Vidal, F. Martinez, Tostes, D. Martins, Massacrier, L. M., Massafferri, A., Matev, R., Mathad, A., Mathe, Z., Matteuzzi, C., Mauri, A., Maurice, E., Maurin, B., Mazurov, A., McCann, M., McNab, A., McNulty, R., Meadows, B., Meier, F., Melnychuk, D., Merk, M., Merli, A., Michielin, E., Milanes, D. A., Minard, M. -N., Mitzel, D. S., Mogini, A., Rodriguez, J. Molina, Monroy, I. A., Monteil, S., Morandin, M., Morello, M. J., Morgunova, O., Moron, J., Morris, A. B., Mountain, R., Muheim, F., Mulder, M., Mussini, M., Müller, D., Müller, J., Müller, K., Müller, V., Naik, P., Nakada, T., Nandakumar, R., Nandi, A., Nasteva, I., Needham, M., Neri, N., Neubert, S., Neufeld, N., Neuner, M., Nguyen, T. D., Nguyen-Mau, C., Nieswand, S., Niet, R., Nikitin, N., Nikodem, T., Nogay, A., Novoselov, A., O'Hanlon, D. P., Oblakowska-Mucha, A., Obraztsov, V., Ogilvy, S., Oldeman, R., Onderwater, C. J. G., Ossowska, A., Goicochea, J. M. Otalora, Owen, P., Oyanguren, A., Pais, P. R., Palano, A., Palutan, M., Papanestis, A., Pappagallo, M., Pappalardo, L. L., Pappenheimer, C., Parker, W., Parkes, C., Passaleva, G., Pastore, A., Patel, M., Patrignani, C., Pearce, A., Pellegrino, A., Penso, G., Altarelli, M. Pepe, Perazzini, S., Perret, P., Pescatore, L., Petridis, K., Petrolini, A., Petrov, A., Petruzzo, M., Olloqui, E. Picatoste, Pietrzyk, B., Pikies, M., Pinci, D., Pistone, A., Piucci, A., Placinta, V., Playfer, S., Casasus, M. Plo, Poikela, T., Polci, F., Lener, M. Poli, Poluektov, A., Polyakov, I., Polycarpo, E., Pomery, G. J., Ponce, S., Popov, A., Popov, D., Popovici, B., Poslavskii, S., Potterat, C., Price, E., Prisciandaro, J., Prouve, C., Pugatch, V., Navarro, A. Puig, Punzi, G., Qian, C., Qian, W., Quagliani, R., Rachwal, B., Rademacker, J. H., Rama, M., Pernas, M. Ramos, Rangel, M. S., Raniuk, I., Ratnikov, F., Raven, G., Redi, F., Reichert, S., Reis, A. C. dos, Alepuz, C. Remon, Renaudin, V., Rera, R. P., Ricciardi, S., Richards, S., Rihl, M., Rinnert, K., Molina, V. Rives, Robbe, P., Rodrigues, A. 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A., Wraight, K., Wyllie, K., Xie, Y., Xu, Z., Yang, Z., Yao, Y., Yin, H., Yu, J., Yuan, X., Yushchenko, O., Zarebski, K. A., Zavertyaev, M., Zhang, L., Zhang, Y., Zhelezov, A., Zheng, Y., Zhu, X., Zhukov, V., and Zucchelli, S.

Subjects
High Energy Physics - Experiment
Abstract

The $B^+ \to D^{*-}K^+\pi^+$ decay potentially provides an excellent way to investigate charm meson spectroscopy. The decay is searched for in a sample of proton-proton collision data collected with the LHCb detector at centre-of-mass energies of 7 and 8 TeV, corresponding to an integrated luminosity of $3~{\rm fb}^{-1}$. A clear signal is observed, and the ratio of its branching fraction to that of the $B^+ \to D^{*-}\pi^+\pi^+$ normalisation channel is measured to be \begin{equation*} \frac{\mathcal{B}(B^+ \to D^{*-}K^+\pi^+)}{\mathcal{B}(B^+ \to D^{*-}\pi^+\pi^+)} = \left( 6.39 \pm 0.27 \pm 0.48 \right) \times 10^{-2} \, , \end{equation*} where the first uncertainty is statistical and the second is systematic. This is the first observation of the $B^+ \to D^{*-}K^+\pi^+$ decay., Comment: 9 pages + authorlist. Submitted to PRD. All figures and tables, along with any supplementary material and additional information, are available at https://lhcbproject.web.cern.ch/lhcbproject/Publications/LHCbProjectPublic/LHCb-PAPER-2017-006.html

Published
2017
Full Text
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35. Observation of the decays $\Lambda_b^0 \to \chi_{c1} p K^-$ and $\Lambda_b^0 \to \chi_{c2} p K^-$

Author

LHCb collaboration, Aaij, R., Adeva, B., Adinolfi, M., Ajaltouni, Z., Akar, S., Albrecht, J., Alessio, F., Alexander, M., Ali, S., Alkhazov, G., Cartelle, P. Alvarez, Alves Jr, A. A., Amato, S., Amerio, S., Amhis, Y., An, L., Anderlini, L., Andreassi, G., Andreotti, M., Andrews, J. E., Appleby, R. B., Archilli, F., d'Argent, P., Romeu, J. Arnau, Artamonov, A., Artuso, M., Aslanides, E., Auriemma, G., Baalouch, M., Babuschkin, I., Bachmann, S., Back, J. J., Badalov, A., Baesso, C., Baker, S., Balagura, V., Baldini, W., Baranov, A., Barlow, R. J., Barschel, C., Barsuk, S., Barter, W., Baryshnikov, F., Baszczyk, M., Batozskaya, V., Battista, V., Bay, A., Beaucourt, L., Beddow, J., Bedeschi, F., Bediaga, I., Beiter, A., Bel, L. J., Bellee, V., Belloli, N., Belous, K., Belyaev, I., Ben-Haim, E., Bencivenni, G., Benson, S., Beranek, S., Berezhnoy, A., Bernet, R., Bertolin, A., Betancourt, C., Betti, F., Bettler, M. -O., van Beuzekom, M., Bezshyiko, Ia., Bifani, S., Billoir, P., Birnkraut, A., Bitadze, A., Bizzeti, A., Blake, T., Blanc, F., Blouw, J., Blusk, S., Bocci, V., Boettcher, T., Bondar, A., Bondar, N., Bonivento, W., Bordyuzhin, I., Borgheresi, A., Borghi, S., Borisyak, M., Borsato, M., Bossu, F., Boubdir, M., Bowcock, T. J. V., Bowen, E., Bozzi, C., Braun, S., Britton, T., Brodzicka, J., Buchanan, E., Burr, C., Bursche, A., Buytaert, J., Cadeddu, S., Calabrese, R., Calvi, M., Gomez, M. Calvo, Camboni, A., Campana, P., Perez, D. H. Campora, Capriotti, L., Carbone, A., Carboni, G., Cardinale, R., Cardini, A., Carniti, P., Carson, L., Akiba, K. Carvalho, Casse, G., Cassina, L., Garcia, L. Castillo, Cattaneo, M., Cavallero, G., Cenci, R., Chamont, D., Charles, M., Charpentier, Ph., Chatzikonstantinidis, G., Chefdeville, M., Chen, S., Cheung, S. F., Chobanova, V., Chrzaszcz, M., Chubykin, A., Vidal, X. Cid, Ciezarek, G., Clarke, P. E. L., Clemencic, M., Cliff, H. V., Closier, J., Coco, V., Cogan, J., Cogneras, E., Cogoni, V., Cojocariu, L., Collins, P., Comerma-Montells, A., Contu, A., Cook, A., Coombs, G., Coquereau, S., Corti, G., Corvo, M., Sobral, C. M. Costa, Couturier, B., Cowan, G. A., Craik, D. C., Crocombe, A., Torres, M. Cruz, Cunliffe, S., Currie, R., D'Ambrosio, C., Marinho, F. Da Cunha, Dall'Occo, E., Dalseno, J., Davis, A., Francisco, O. De Aguiar, De Bruyn, K., De Capua, S., De Cian, M., De Miranda, J. M., De Paula, L., De Serio, M., De Simone, P., Dean, C. T., Decamp, D., Deckenhoff, M., Del Buono, L., Dembinski, H. -P., Demmer, M., Dendek, A., Derkach, D., Deschamps, O., Dettori, F., Dey, B., Di Canto, A., Di Nezza, P., Dijkstra, H., Dordei, F., Dorigo, M., Suárez, A. Dosil, Dovbnya, A., Dreimanis, K., Dufour, L., Dujany, G., Dungs, K., Durante, P., Dzhelyadin, R., Dziewiecki, M., Dziurda, A., Dzyuba, A., Déléage, N., Easo, S., Ebert, M., Egede, U., Egorychev, V., Eidelman, S., Eisenhardt, S., Eitschberger, U., Ekelhof, R., Eklund, L., Ely, S., Esen, S., Evans, H. M., Evans, T., Falabella, A., Farley, N., Farry, S., Fay, R., Fazzini, D., Ferguson, D., Fernandez, G., Prieto, A. Fernandez, Ferrari, F., Rodrigues, F. Ferreira, Ferro-Luzzi, M., Filippov, S., Fini, R. A., Fiore, M., Fiorini, M., Firlej, M., Fitzpatrick, C., Fiutowski, T., Fleuret, F., Fohl, K., Fontana, M., Fontanelli, F., Forshaw, D. C., Forty, R., Lima, V. Franco, Frank, M., Frei, C., Fu, J., Funk, W., Furfaro, E., Färber, C., Gabriel, E., Torreira, A. Gallas, Galli, D., Gallorini, S., Gambetta, S., Gandelman, M., Gandini, P., Gao, Y., Martin, L. M. Garcia, Pardiñas, J. García, Tico, J. Garra, Garrido, L., Garsed, P. J., Gascon, D., Gaspar, C., Gavardi, L., Gazzoni, G., Gerick, D., Gersabeck, E., Gersabeck, M., Gershon, T., Ghez, Ph., Gianì, S., Gibson, V., Girard, O. G., Giubega, L., Gizdov, K., Gligorov, V. V., Golubkov, D., Golutvin, A., Gomes, A., Gorelov, I. V., Gotti, C., Govorkova, E., Diaz, R. Graciani, Cardoso, L. A. Granado, Graugés, E., Graverini, E., Graziani, G., Grecu, A., Greim, R., Griffith, P., Grillo, L., Gruber, L., Cazon, B. R. Gruberg, Grünberg, O., Gushchin, E., Guz, Yu., Gys, T., Göbel, C., Hadavizadeh, T., Hadjivasiliou, C., Haefeli, G., Haen, C., Haines, S. C., Hamilton, B., Han, X., Hansmann-Menzemer, S., Harnew, N., Harnew, S. T., Harrison, J., Hatch, M., He, J., Head, T., Heister, A., Hennessy, K., Henrard, P., Henry, L., van Herwijnen, E., Heß, M., Hicheur, A., Hill, D., Hombach, C., Hopchev, P. H., Huard, Z. -C., Hulsbergen, W., Humair, T., Hushchyn, M., Hutchcroft, D., Idzik, M., Ilten, P., Jacobsson, R., Jalocha, J., Jans, E., Jawahery, A., Jiang, F., John, M., Johnson, D., Jones, C. R., Joram, C., Jost, B., Jurik, N., Kandybei, S., Karacson, M., Kariuki, J. M., Karodia, S., Kecke, M., Kelsey, M., Kenzie, M., Ketel, T., Khairullin, E., Khanji, B., Khurewathanakul, C., Kirn, T., Klaver, S., Klimaszewski, K., Klimkovich, T., Koliiev, S., Kolpin, M., Komarov, I., Kopecna, R., Koppenburg, P., Kosmyntseva, A., Kotriakhova, S., Kozachuk, A., Kozeiha, M., Kravchuk, L., Kreps, M., Krokovny, P., Kruse, F., Krzemien, W., Kucewicz, W., Kucharczyk, M., Kudryavtsev, V., Kuonen, A. K., Kurek, K., Kvaratskheliya, T., Lacarrere, D., Lafferty, G., Lai, A., Lanfranchi, G., Langenbruch, C., Latham, T., Lazzeroni, C., Gac, R. Le, van Leerdam, J., Leflat, A., Lefrançois, J., Lefèvre, R., Lemaitre, F., Cid, E. Lemos, Leroy, O., Lesiak, T., Leverington, B., Li, T., Li, Y., Li, Z., Likhomanenko, T., Lindner, R., Lionetto, F., Liu, X., Loh, D., Longstaff, I., Lopes, J. H., Lucchesi, D., Martinez, M. Lucio, Luo, H., Lupato, A., Luppi, E., Lupton, O., Lusiani, A., Lyu, X., Machefert, F., Maciuc, F., Maev, O., Maguire, K., Malde, S., Malinin, A., Maltsev, T., Manca, G., Mancinelli, G., Manning, P., Maratas, J., Marchand, J. F., Marconi, U., Benito, C. Marin, Marinangeli, M., Marino, P., Marks, J., Martellotti, G., Martin, M., Martinelli, M., Santos, D. Martinez, Vidal, F. Martinez, Tostes, D. Martins, Massacrier, L. M., Massafferri, A., Matev, R., Mathad, A., Mathe, Z., Matteuzzi, C., Mauri, A., Maurice, E., Maurin, B., Mazurov, A., McCann, M., McNab, A., McNulty, R., Meadows, B., Meier, F., Melnychuk, D., Merk, M., Merli, A., Michielin, E., Milanes, D. A., Minard, M. -N., Mitzel, D. S., Mogini, A., Rodriguez, J. Molina, Monroy, I. A., Monteil, S., Morandin, M., Morello, M. J., Morgunova, O., Moron, J., Morris, A. B., Morris, A. P., Mountain, R., Muheim, F., Mulder, M., Mussini, M., Müller, D., Müller, J., Müller, K., Müller, V., Naik, P., Nakada, T., Nandakumar, R., Nandi, A., Nasteva, I., Needham, M., Neri, N., Neubert, S., Neufeld, N., Neuner, M., Nguyen, T. D., Nguyen-Mau, C., Nieswand, S., Niet, R., Nikitin, N., Nikodem, T., Nogay, A., O'Hanlon, D. P., Oblakowska-Mucha, A., Obraztsov, V., Ogilvy, S., Oldeman, R., Onderwater, C. J. G., Ossowska, A., Goicochea, J. M. Otalora, Owen, P., Oyanguren, A., Pais, P. R., Palano, A., Palutan, M., Papanestis, A., Pappagallo, M., Pappalardo, L. L., Pappenheimer, C., Parker, W., Parkes, C., Passaleva, G., Pastore, A., Patel, M., Patrignani, C., Pearce, A., Pellegrino, A., Penso, G., Altarelli, M. Pepe, Perazzini, S., Perret, P., Pescatore, L., Petridis, K., Petrolini, A., Petrov, A., Petruzzo, M., Olloqui, E. Picatoste, Pietrzyk, B., Pikies, M., Pinci, D., Pistone, A., Piucci, A., Placinta, V., Playfer, S., Casasus, M. Plo, Poikela, T., Polci, F., Lener, M. Poli, Poluektov, A., Polyakov, I., Polycarpo, E., Pomery, G. J., Ponce, S., Popov, A., Popov, D., Popovici, B., Poslavskii, S., Potterat, C., Price, E., Prisciandaro, J., Prouve, C., Pugatch, V., Navarro, A. Puig, Punzi, G., Qian, C., Qian, W., Quagliani, R., Rachwal, B., Rademacker, J. H., Rama, M., Pernas, M. Ramos, Rangel, M. S., Raniuk, I., Ratnikov, F., Raven, G., Salzgeber, M. Ravonel, Reboud, M., Redi, F., Reichert, S., Reis, A. C. dos, Alepuz, C. Remon, Renaudin, V., Ricciardi, S., Richards, S., Rihl, M., Rinnert, K., Molina, V. Rives, Robbe, P., Rodrigues, A. B., Rodrigues, E., Lopez, J. A. Rodriguez, Perez, P. Rodriguez, Rogozhnikov, A., Roiser, S., Rollings, A., Romanovskiy, V., Vidal, A. Romero, Ronayne, J. W., Rotondo, M., Rudolph, M. S., Ruf, T., Valls, P. Ruiz, Silva, J. J. Saborido, Sadykhov, E., Sagidova, N., Saitta, B., Guimaraes, V. Salustino, Gonzalo, D. Sanchez, Mayordomo, C. Sanchez, Sedes, B. Sanmartin, Santacesaria, R., Rios, C. Santamarina, Santimaria, M., Santovetti, E., Sarti, A., Satriano, C., Satta, A., Saunders, D. M., Savrina, D., Schael, S., Schellenberg, M., Schiller, M., Schindler, H., Schlupp, M., Schmelling, M., Schmelzer, T., Schmidt, B., Schneider, O., Schopper, A., Schreiner, H. F., Schubert, K., Schubiger, M., Schune, M. -H., Schwemmer, R., Sciascia, B., Sciubba, A., Semennikov, A., Sergi, A., Serra, N., Serrano, J., Sestini, L., Seyfert, P., Shapkin, M., Shapoval, I., Shcheglov, Y., Shears, T., Shekhtman, L., Shevchenko, V., Siddi, B. G., Coutinho, R. Silva, de Oliveira, L. Silva, Simi, G., Simone, S., Sirendi, M., Skidmore, N., Skwarnicki, T., Smith, E., Smith, I. T., Smith, J., Smith, M., Lavra, l. Soares, Sokoloff, M. D., Soler, F. J. P., De Paula, B. Souza, Spaan, B., Spradlin, P., Sridharan, S., Stagni, F., Stahl, M., Stahl, S., Stefko, P., Stefkova, S., Steinkamp, O., Stemmle, S., Stenyakin, O., Stevens, H., Stoica, S., Stone, S., Storaci, B., Stracka, S., Stramaglia, M. E., Straticiuc, M., Straumann, U., Sun, L., Sutcliffe, W., Swientek, K., Syropoulos, V., Szczekowski, M., Szumlak, T., T'Jampens, S., Tayduganov, A., Tekampe, T., Tellarini, G., Teubert, F., Thomas, E., van Tilburg, J., Tilley, M. J., Tisserand, V., Tobin, M., Tolk, S., Tomassetti, L., Tonelli, D., Topp-Joergensen, S., Toriello, F., Aoude, R. Tourinho Jadallah, Tournefier, E., Tourneur, S., Trabelsi, K., Traill, M., Tran, M. T., Tresch, M., Trisovic, A., Tsaregorodtsev, A., Tsopelas, P., Tully, A., Tuning, N., Ukleja, A., Ustyuzhanin, A., Uwer, U., Vacca, C., Vagnoni, V., Valassi, A., Valat, S., Valenti, G., Gomez, R. Vazquez, Regueiro, P. Vazquez, Vecchi, S., van Veghel, M., Velthuis, J. J., Veltri, M., Veneziano, G., Venkateswaran, A., Verlage, T. A., Vernet, M., Vesterinen, M., Barbosa, J. V. Viana, Viaud, B., Vieira, D., Diaz, M. Vieites, Viemann, H., Vilasis-Cardona, X., Vitti, M., Volkov, V., Vollhardt, A., Voneki, B., Vorobyev, A., Vorobyev, V., Voß, C., de Vries, J. A., Sierra, C. Vázquez, Waldi, R., Wallace, C., Wallace, R., Walsh, J., Wang, J., Ward, D. R., Wark, H. M., Watson, N. K., Websdale, D., Weiden, A., Whitehead, M., Wicht, J., Wilkinson, G., Wilkinson, M., Williams, M., Williams, M. P., Williams, T., Wilson, F. F., Wimberley, J., Winn, M. A., Wishahi, J., Wislicki, W., Witek, M., Wormser, G., Wotton, S. A., Wraight, K., Wyllie, K., Xie, Y., Xu, Z., Yang, Z., Yao, Y., Yin, H., Yu, J., Yuan, X., Yushchenko, O., Zarebski, K. A., Zavertyaev, M., Zhang, L., Zhang, Y., Zhelezov, A., Zheng, Y., Zhu, X., Zhukov, V., Zonneveld, J. B., and Zucchelli, S.

Subjects
High Energy Physics - Experiment
Abstract

The first observation of the decays $\Lambda_b^0 \to \chi_{c1} p K^-$ and $\Lambda_b^0 \to \chi_{c2} p K^-$ is reported using a data sample corresponding to an integrated luminosity of $3.0$ fb$^{-1}$, collected by the LHCb experiment in $pp$ collisions at centre-of-mass energies of 7 and 8 TeV. The following ratios of branching fractions are measured \begin{eqnarray*} \frac{{\cal B}(\Lambda_b^0 \to \chi_{c1} p K^-)}{{\cal B}(\Lambda_b^0 \to J/\psi p K^-)} = 0.242 \pm 0.014 \pm 0.013 \pm 0.009, \frac{{\cal B}(\Lambda_b^0 \to \chi_{c2} p K^-)}{{\cal B}(\Lambda_b^0 \to J/\psi p K^-)} = 0.248 \pm 0.020 \pm 0.014 \pm 0.009, \frac{{\cal B}(\Lambda_b^0 \to \chi_{c2} p K^-)}{{\cal B}(\Lambda_b^0 \to \chi_{c1} p K^-)} = 1.02 \pm 0.10 \pm 0.02 \pm 0.05, \end{eqnarray*} where the first uncertainty is statistical, the second systematic and the third due to the uncertainty on the branching fractions of the $\chi_{c1}\to J/\psi\gamma$ and $\chi_{c2} \to J/\psi\gamma$ decays. Using both decay modes, the mass of the $\Lambda_b^0$ baryon is also measured to be $m_{\Lambda_b^0} = 5619.44 \pm 0.28 \pm 0.26$ MeV/$c^2$, where the first and second uncertainties are statistical and systematic, respectively., Comment: All figures and tables, along with any supplementary material and additional information, are available at https://lhcbproject.web.cern.ch/lhcbproject/Publications/LHCbProjectPublic/LHCb-PAPER-2017-011.html

Published
2017
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36. Measurement of the $B^0_s\to\mu^+\mu^-$ branching fraction and effective lifetime and search for $B^0\to\mu^+\mu^-$ decays

Author

LHCb collaboration, Aaij, R., Adeva, B., Adinolfi, M., Ajaltouni, Z., Akar, S., Albrecht, J., Alessio, F., Alexander, M., Ali, S., Alkhazov, G., Cartelle, P. Alvarez, Alves Jr, A. A., Amato, S., Amerio, S., Amhis, Y., An, L., Anderlini, L., Andreassi, G., Andreotti, M., Andrews, J. E., Appleby, R. B., Archilli, F., d'Argent, P., Romeu, J. Arnau, Artamonov, A., Artuso, M., Aslanides, E., Auriemma, G., Baalouch, M., Babuschkin, I., Bachmann, S., Back, J. J., Badalov, A., Baesso, C., Baker, S., Balagura, V., Baldini, W., Baranov, A., Barlow, R. J., Barschel, C., Barsuk, S., Barter, W., Baryshnikov, F., Baszczyk, M., Batozskaya, V., Batsukh, B., Battista, V., Bay, A., Beaucourt, L., Beddow, J., Bedeschi, F., Bediaga, I., Beiter, A., Bel, L. J., Bellee, V., Belloli, N., Belous, K., Belyaev, I., Ben-Haim, E., Bencivenni, G., Benson, S., Beranek, S., Berezhnoy, A., Bernet, R., Bertolin, A., Betancourt, C., Betti, F., Bettler, M. -O., van Beuzekom, M., Bezshyiko, Ia., Bifani, S., Billoir, P., Birnkraut, A., Bitadze, A., Bizzeti, A., Blake, T., Blanc, F., Blouw, J., Blusk, S., Bocci, V., Boettcher, T., Bondar, A., Bondar, N., Bonivento, W., Bordyuzhin, I., Borgheresi, A., Borghi, S., Borisyak, M., Borsato, M., Bossu, F., Boubdir, M., Bowcock, T. J. V., Bowen, E., Bozzi, C., Braun, S., Britton, T., Brodzicka, J., Buchanan, E., Burr, C., Bursche, A., Buytaert, J., Cadeddu, S., Calabrese, R., Calvi, M., Gomez, M. Calvo, Camboni, A., Campana, P., Perez, D. H. Campora, Capriotti, L., Carbone, A., Carboni, G., Cardinale, R., Cardini, A., Carniti, P., Carson, L., Akiba, K. Carvalho, Casse, G., Cassina, L., Garcia, L. Castillo, Cattaneo, M., Cavallero, G., Cenci, R., Chamont, D., Charles, M., Charpentier, Ph., Chatzikonstantinidis, G., Chefdeville, M., Chen, S., Cheung, S. F., Chobanova, V., Chrzaszcz, M., Chubykin, A., Vidal, X. Cid, Ciezarek, G., Clarke, P. E. L., Clemencic, M., Cliff, H. V., Closier, J., Coco, V., Cogan, J., Cogneras, E., Cogoni, V., Cojocariu, L., Collins, P., Comerma-Montells, A., Contu, A., Cook, A., Coombs, G., Coquereau, S., Corti, G., Corvo, M., Sobral, C. M. Costa, Couturier, B., Cowan, G. A., Craik, D. C., Crocombe, A., Torres, M. Cruz, Cunliffe, S., Currie, R., D'Ambrosio, C., Marinho, F. Da Cunha, Dall'Occo, E., Dalseno, J., David, P. N. Y., Davis, A., De Bruyn, K., De Capua, S., De Cian, M., De Miranda, J. M., De Paula, L., De Serio, M., De Simone, P., Dean, C. T., Decamp, D., Deckenhoff, M., Del Buono, L., Demmer, M., Dendek, A., Derkach, D., Deschamps, O., Dettori, F., Dey, B., Di Canto, A., Dijkstra, H., Dordei, F., Dorigo, M., Suárez, A. Dosil, Dovbnya, A., Dreimanis, K., Dufour, L., Dujany, G., Dungs, K., Durante, P., Dzhelyadin, R., Dziurda, A., Dzyuba, A., Déléage, N., Easo, S., Ebert, M., Egede, U., Egorychev, V., Eidelman, S., Eisenhardt, S., Eitschberger, U., Ekelhof, R., Eklund, L., Ely, S., Esen, S., Evans, H. M., Evans, T., Falabella, A., Farley, N., Farry, S., Fay, R., Fazzini, D., Ferguson, D., Fernandez, G., Prieto, A. Fernandez, Ferrari, F., Rodrigues, F. Ferreira, Ferro-Luzzi, M., Filippov, S., Fini, R. A., Fiore, M., Fiorini, M., Firlej, M., Fitzpatrick, C., Fiutowski, T., Fleuret, F., Fohl, K., Fontana, M., Fontanelli, F., Forshaw, D. C., Forty, R., Lima, V. Franco, Frank, M., Frei, C., Fu, J., Funk, W., Furfaro, E., Färber, C., Torreira, A. Gallas, Galli, D., Gallorini, S., Gambetta, S., Gandelman, M., Gandini, P., Gao, Y., Martin, L. M. Garcia, Pardiñas, J. García, Tico, J. Garra, Garrido, L., Garsed, P. J., Gascon, D., Gaspar, C., Gavardi, L., Gazzoni, G., Gerick, D., Gersabeck, E., Gersabeck, M., Gershon, T., Ghez, Ph., Gianì, S., Gibson, V., Girard, O. G., Giubega, L., Gizdov, K., Gligorov, V. V., Golubkov, D., Golutvin, A., Gomes, A., Gorelov, I. V., Gotti, C., Govorkova, E., Diaz, R. Graciani, Cardoso, L. A. Granado, Graugés, E., Graverini, E., Graziani, G., Grecu, A., Greim, R., Griffith, P., Grillo, L., Cazon, B. R. Gruberg, Grünberg, O., Gushchin, E., Guz, Yu., Gys, T., Göbel, C., Hadavizadeh, T., Hadjivasiliou, C., Haefeli, G., Haen, C., Haines, S. C., Hamilton, B., Han, X., Hansmann-Menzemer, S., Harnew, N., Harnew, S. T., Harrison, J., Hatch, M., He, J., Head, T., Heister, A., Hennessy, K., Henrard, P., Henry, L., van Herwijnen, E., Heß, M., Hicheur, A., Hill, D., Hombach, C., Hopchev, P. H., Huard, Z. -C., Hulsbergen, W., Humair, T., Hushchyn, M., Hutchcroft, D., Idzik, M., Ilten, P., Jacobsson, R., Jalocha, J., Jans, E., Jawahery, A., Jiang, F., John, M., Johnson, D., Jones, C. R., Joram, C., Jost, B., Jurik, N., Kandybei, S., Karacson, M., Kariuki, J. M., Karodia, S., Kecke, M., Kelsey, M., Kenzie, M., Ketel, T., Khairullin, E., Khanji, B., Khurewathanakul, C., Kirn, T., Klaver, S., Klimaszewski, K., Klimkovich, T., Koliiev, S., Kolpin, M., Komarov, I., Koppenburg, P., Kosmyntseva, A., Kotriakhova, S., Kozeiha, M., Kravchuk, L., Kreplin, K., Kreps, M., Krokovny, P., Kruse, F., Krzemien, W., Kucewicz, W., Kucharczyk, M., Kudryavtsev, V., Kuonen, A. K., Kurek, K., Kvaratskheliya, T., Lacarrere, D., Lafferty, G., Lai, A., Lanfranchi, G., Langenbruch, C., Latham, T., Lazzeroni, C., Gac, R. Le, van Leerdam, J., Leflat, A., Lefrançois, J., Lefèvre, R., Lemaitre, F., Cid, E. Lemos, Leroy, O., Lesiak, T., Leverington, B., Li, T., Li, Y., Li, Z., Likhomanenko, T., Lindner, R., Lionetto, F., Liu, X., Loh, D., Longstaff, I., Lopes, J. H., Lucchesi, D., Martinez, M. Lucio, Luo, H., Lupato, A., Luppi, E., Lupton, O., Lusiani, A., Lyu, X., Machefert, F., Maciuc, F., Maev, O., Maguire, K., Malde, S., Malinin, A., Maltsev, T., Manca, G., Mancinelli, G., Manning, P., Maratas, J., Marchand, J. F., Marconi, U., Benito, C. Marin, Marinangeli, M., Marino, P., Marks, J., Martellotti, G., Martin, M., Martinelli, M., Santos, D. Martinez, Vidal, F. Martinez, Tostes, D. Martins, Massacrier, L. M., Massafferri, A., Matev, R., Mathad, A., Mathe, Z., Matteuzzi, C., Mauri, A., Maurice, E., Maurin, B., Mazurov, A., McCann, M., McNab, A., McNulty, R., Meadows, B., Meier, F., Melnychuk, D., Merk, M., Merli, A., Michielin, E., Milanes, D. A., Minard, M. -N., Mitzel, D. S., Mogini, A., Rodriguez, J. Molina, Monroy, I. A., Monteil, S., Morandin, M., Morawski, P., Morello, M. J., Morgunova, O., Moron, J., Morris, A. B., Mountain, R., Muheim, F., Mulder, M., Mussini, M., Müller, D., Müller, J., Müller, K., Müller, V., Naik, P., Nakada, T., Nandakumar, R., Nandi, A., Nasteva, I., Needham, M., Neri, N., Neubert, S., Neufeld, N., Neuner, M., Nguyen, T. D., Nguyen-Mau, C., Nieswand, S., Niet, R., Nikitin, N., Nikodem, T., Nogay, A., Novoselov, A., O'Hanlon, D. P., Oblakowska-Mucha, A., Obraztsov, V., Ogilvy, S., Oldeman, R., Onderwater, C. J. G., Goicochea, J. M. Otalora, Otto, A., Owen, P., Oyanguren, A., Pais, P. R., Palano, A., Palutan, M., Papanestis, A., Pappagallo, M., Pappalardo, L. L., Pappenheimer, C., Parker, W., Parkes, C., Passaleva, G., Pastore, A., Patel, M., Patrignani, C., Pearce, A., Pellegrino, A., Penso, G., Altarelli, M. Pepe, Perazzini, S., Perret, P., Perrin-Terrin, M., Pescatore, L., Petridis, K., Petrolini, A., Petrov, A., Petruzzo, M., Olloqui, E. Picatoste, Pietrzyk, B., Pikies, M., Pinci, D., Pistone, A., Piucci, A., Placinta, V., Playfer, S., Casasus, M. Plo, Poikela, T., Polci, F., Lener, M. Poli, Poluektov, A., Polyakov, I., Polycarpo, E., Pomery, G. J., Ponce, S., Popov, A., Popov, D., Popovici, B., Poslavskii, S., Potterat, C., Price, E., Prisciandaro, J., Prouve, C., Pugatch, V., Navarro, A. Puig, Punzi, G., Qian, C., Qian, W., Quagliani, R., Rachwal, B., Rademacker, J. H., Rama, M., Pernas, M. Ramos, Rangel, M. S., Raniuk, I., Ratnikov, F., Raven, G., Redi, F., Reichert, S., Reis, A. C. dos, Alepuz, C. Remon, Renaudin, V., Ricciardi, S., Richards, S., Rihl, M., Rinnert, K., Molina, V. Rives, Robbe, P., Rodrigues, A. B., Rodrigues, E., Lopez, J. A. Rodriguez, Perez, P. Rodriguez, Rogozhnikov, A., Roiser, S., Rollings, A., Romanovskiy, V., Vidal, A. Romero, Ronayne, J. W., Rotondo, M., Rudolph, M. S., Ruf, T., Valls, P. Ruiz, Silva, J. J. Saborido, Sadykhov, E., Sagidova, N., Saitta, B., Guimaraes, V. Salustino, Gonzalo, D. Sanchez, Mayordomo, C. Sanchez, Sedes, B. Sanmartin, Santacesaria, R., Rios, C. Santamarina, Santimaria, M., Santovetti, E., Sarti, A., Satriano, C., Satta, A., Saunders, D. M., Savrina, D., Schael, S., Schellenberg, M., Schiller, M., Schindler, H., Schlupp, M., Schmelling, M., Schmelzer, T., Schmidt, B., Schneider, O., Schopper, A., Schreiner, H. F., Schubert, K., Schubiger, M., Schune, M. -H., Schwemmer, R., Sciascia, B., Sciubba, A., Semennikov, A., Sergi, A., Serra, N., Serrano, J., Sestini, L., Seyfert, P., Shapkin, M., Shapoval, I., Shcheglov, Y., Shears, T., Shekhtman, L., Shevchenko, V., Siddi, B. G., Coutinho, R. Silva, de Oliveira, L. Silva, Simi, G., Simone, S., Sirendi, M., Skidmore, N., Skwarnicki, T., Smith, E., Smith, I. T., Smith, J., Smith, M., Lavra, l. Soares, Sokoloff, M. D., Soler, F. J. P., De Paula, B. Souza, Spaan, B., Spradlin, P., Sridharan, S., Stagni, F., Stahl, M., Stahl, S., Stefko, P., Stefkova, S., Steinkamp, O., Stemmle, S., Stenyakin, O., Stevens, H., Stoica, S., Stone, S., Storaci, B., Stracka, S., Stramaglia, M. E., Straticiuc, M., Straumann, U., Sun, L., Sutcliffe, W., Swientek, K., Syropoulos, V., Szczekowski, M., Szumlak, T., T'Jampens, S., Tayduganov, A., Tekampe, T., Tellarini, G., Teubert, F., Thomas, E., van Tilburg, J., Tilley, M. J., Tisserand, V., Tobin, M., Tolk, S., Tomassetti, L., Tonelli, D., Topp-Joergensen, S., Toriello, F., Aoude, R. Tourinho Jadallah, Tournefier, E., Tourneur, S., Trabelsi, K., Traill, M., Tran, M. T., Tresch, M., Trisovic, A., Tsaregorodtsev, A., Tsopelas, P., Tully, A., Tuning, N., Ukleja, A., Ustyuzhanin, A., Uwer, U., Vacca, C., Vagnoni, V., Valassi, A., Valat, S., Valenti, G., Gomez, R. Vazquez, Regueiro, P. Vazquez, Vecchi, S., van Veghel, M., Velthuis, J. J., Veltri, M., Veneziano, G., Venkateswaran, A., Verlage, T. A., Vernet, M., Vesterinen, M., Barbosa, J. V. Viana, Viaud, B., Vieira, D., Diaz, M. Vieites, Viemann, H., Vilasis-Cardona, X., Vitti, M., Volkov, V., Vollhardt, A., Voneki, B., Vorobyev, A., Vorobyev, V., Voß, C., de Vries, J. A., Sierra, C. Vázquez, Waldi, R., Wallace, C., Wallace, R., Walsh, J., Wang, J., Ward, D. R., Wark, H. M., Watson, N. K., Websdale, D., Weiden, A., Whitehead, M., Wicht, J., Wilkinson, G., Wilkinson, M., Williams, M., Williams, M. P., Williams, T., Wilson, F. F., Wimberley, J., Winn, M. A., Wishahi, J., Wislicki, W., Witek, M., Wormser, G., Wotton, S. A., Wraight, K., Wyllie, K., Xie, Y., Xing, Z., Xu, Z., Yang, Z., Yao, Y., Yin, H., Yu, J., Yuan, X., Yushchenko, O., Zarebski, K. A., Zavertyaev, M., Zhang, L., Zhang, Y., Zhelezov, A., Zheng, Y., Zhu, X., Zhukov, V., and Zucchelli, S.

Subjects
High Energy Physics - Experiment
Abstract

A search for the rare decays $B^0_s\to\mu^+\mu^-$ and $B^0\to\mu^+\mu^-$ is performed at the LHCb experiment using data collected in $pp$ collisions corresponding to a total integrated luminosity of 4.4 fb$^{-1}$. An excess of $B^0_s\to\mu^+\mu^-$ decays is observed with a significance of 7.8 standard deviations, representing the first observation of this decay in a single experiment. The branching fraction is measured to be ${\cal B}(B^0_s\to\mu^+\mu^-)=\left(3.0\pm 0.6^{+0.3}_{-0.2}\right)\times 10^{-9}$, where the first uncertainty is statistical and the second systematic. The first measurement of the $B^0_s\to\mu^+\mu^-$ effective lifetime, $\tau(B^0_s\to\mu^+\mu^-)=2.04\pm 0.44\pm 0.05$ ps, is reported. No significant excess of $B^0\to\mu^+\mu^-$ decays is found and a 95 % confidence level upper limit, ${\cal B}(B^0\to\mu^+\mu^-)<3.4\times 10^{-10}$, is determined. All results are in agreement with the Standard Model expectations., Comment: All figures and tables, along with any supplementary material and additional information, are available at https://lhcbproject.web.cern.ch/lhcbproject/Publications/LHCbProjectPublic/LHCb-PAPER-2017-001.html

Published
2017
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37. Observation of five new narrow $\Omega_c^0$ states decaying to $\Xi_c^+ K^-$

Author

LHCb collaboration, Aaij, R., Adeva, B., Adinolfi, M., Ajaltouni, Z., Akar, S., Albrecht, J., Alessio, F., Alexander, M., Ali, S., Alkhazov, G., Cartelle, P. Alvarez, Alves Jr, A. A., Amato, S., Amerio, S., Amhis, Y., An, L., Anderlini, L., Andreassi, G., Andreotti, M., Andrews, J. E., Appleby, R. B., Archilli, F., d'Argent, P., Romeu, J. Arnau, Artamonov, A., Artuso, M., Aslanides, E., Auriemma, G., Baalouch, M., Babuschkin, I., Bachmann, S., Back, J. J., Badalov, A., Baesso, C., Baker, S., Balagura, V., Baldini, W., Baranov, A., Barlow, R. J., Barschel, C., Barsuk, S., Barter, W., Baryshnikov, F., Baszczyk, M., Batozskaya, V., Batsukh, B., Battista, V., Bay, A., Beaucourt, L., Beddow, J., Bedeschi, F., Bediaga, I., Beiter, A., Bel, L. J., Bellee, V., Belloli, N., Belous, K., Belyaev, I., Ben-Haim, E., Bencivenni, G., Benson, S., Beranek, S., Berezhnoy, A., Bernet, R., Bertolin, A., Betancourt, C., Betti, F., Bettler, M. -O., van Beuzekom, M., Bezshyiko, Ia., Bifani, S., Billoir, P., Birnkraut, A., Bitadze, A., Bizzeti, A., Blake, T., Blanc, F., Blouw, J., Blusk, S., Bocci, V., Boettcher, T., Bondar, A., Bondar, N., Bonivento, W., Bordyuzhin, I., Borgheresi, A., Borghi, S., Borisyak, M., Borsato, M., Bossu, F., Boubdir, M., Bowcock, T. J. V., Bowen, E., Bozzi, C., Braun, S., Britton, T., Brodzicka, J., Buchanan, E., Burr, C., Bursche, A., Buytaert, J., Cadeddu, S., Calabrese, R., Calvi, M., Gomez, M. Calvo, Camboni, A., Campana, P., Perez, D. H. Campora, Capriotti, L., Carbone, A., Carboni, G., Cardinale, R., Cardini, A., Carniti, P., Carson, L., Akiba, K. Carvalho, Casse, G., Cassina, L., Garcia, L. Castillo, Cattaneo, M., Cavallero, G., Cenci, R., Chamont, D., Charles, M., Charpentier, Ph., Chatzikonstantinidis, G., Chefdeville, M., Chen, S., Cheung, S. F., Chobanova, V., Chrzaszcz, M., Chubykin, A., Vidal, X. Cid, Ciezarek, G., Clarke, P. E. L., Clemencic, M., Cliff, H. V., Closier, J., Coco, V., Cogan, J., Cogneras, E., Cogoni, V., Cojocariu, L., Collins, P., Comerma-Montells, A., Contu, A., Cook, A., Coombs, G., Coquereau, S., Corti, G., Corvo, M., Sobral, C. M. Costa, Couturier, B., Cowan, G. A., Craik, D. C., Crocombe, A., Torres, M. Cruz, Cunliffe, S., Currie, R., D'Ambrosio, C., Marinho, F. Da Cunha, Dall'Occo, E., Dalseno, J., David, P. N. Y., Davis, A., De Bruyn, K., De Capua, S., De Cian, M., De Miranda, J. M., De Paula, L., De Serio, M., De Simone, P., Dean, C. T., Decamp, D., Deckenhoff, M., Del Buono, L., Dembinski, H. -P., Demmer, M., Dendek, A., Derkach, D., Deschamps, O., Dettori, F., Dey, B., Di Canto, A., Di Nezza, P., Dijkstra, H., Dordei, F., Dorigo, M., Suárez, A. Dosil, Dovbnya, A., Dreimanis, K., Dufour, L., Dujany, G., Dungs, K., Durante, P., Dzhelyadin, R., Dziewiecki, M., Dziurda, A., Dzyuba, A., Déléage, N., Easo, S., Ebert, M., Egede, U., Egorychev, V., Eidelman, S., Eisenhardt, S., Eitschberger, U., Ekelhof, R., Eklund, L., Ely, S., Esen, S., Evans, H. M., Evans, T., Falabella, A., Farley, N., Farry, S., Fay, R., Fazzini, D., Ferguson, D., Fernandez, G., Prieto, A. Fernandez, Ferrari, F., Rodrigues, F. Ferreira, Ferro-Luzzi, M., Filippov, S., Fini, R. A., Fiore, M., Fiorini, M., Firlej, M., Fitzpatrick, C., Fiutowski, T., Fleuret, F., Fohl, K., Fontana, M., Fontanelli, F., Forshaw, D. C., Forty, R., Lima, V. Franco, Frank, M., Frei, C., Fu, J., Funk, W., Furfaro, E., Färber, C., Torreira, A. Gallas, Galli, D., Gallorini, S., Gambetta, S., Gandelman, M., Gandini, P., Gao, Y., Martin, L. M. Garcia, Pardiñas, J. García, Tico, J. Garra, Garrido, L., Garsed, P. J., Gascon, D., Gaspar, C., Gavardi, L., Gazzoni, G., Gerick, D., Gersabeck, E., Gersabeck, M., Gershon, T., Ghez, Ph., Gianì, S., Gibson, V., Girard, O. G., Giubega, L., Gizdov, K., Gligorov, V. V., Golubkov, D., Golutvin, A., Gomes, A., Gorelov, I. V., Gotti, C., Govorkova, E., Diaz, R. Graciani, Cardoso, L. A. Granado, Graugés, E., Graverini, E., Graziani, G., Grecu, A., Greim, R., Griffith, P., Grillo, L., Cazon, B. R. Gruberg, Grünberg, O., Gushchin, E., Guz, Yu., Gys, T., Göbel, C., Hadavizadeh, T., Hadjivasiliou, C., Haefeli, G., Haen, C., Haines, S. C., Hamilton, B., Han, X., Hansmann-Menzemer, S., Harnew, N., Harnew, S. T., Harrison, J., Hatch, M., He, J., Head, T., Heister, A., Hennessy, K., Henrard, P., Henry, L., van Herwijnen, E., Heß, M., Hicheur, A., Hill, D., Hombach, C., Hopchev, P. H., Huard, Z. -C., Hulsbergen, W., Humair, T., Hushchyn, M., Hutchcroft, D., Idzik, M., Ilten, P., Jacobsson, R., Jalocha, J., Jans, E., Jawahery, A., Jiang, F., John, M., Johnson, D., Jones, C. R., Joram, C., Jost, B., Jurik, N., Kandybei, S., Karacson, M., Kariuki, J. M., Karodia, S., Kecke, M., Kelsey, M., Kenzie, M., Ketel, T., Khairullin, E., Khanji, B., Khurewathanakul, C., Kirn, T., Klaver, S., Klimaszewski, K., Klimkovich, T., Koliiev, S., Kolpin, M., Komarov, I., Kopecna, R., Koppenburg, P., Kosmyntseva, A., Kotriakhova, S., Kozachuk, A., Kozeiha, M., Kravchuk, L., Kreps, M., Krokovny, P., Kruse, F., Krzemien, W., Kucewicz, W., Kucharczyk, M., Kudryavtsev, V., Kuonen, A. K., Kurek, K., Kvaratskheliya, T., Lacarrere, D., Lafferty, G., Lai, A., Lanfranchi, G., Langenbruch, C., Latham, T., Lazzeroni, C., Gac, R. Le, van Leerdam, J., Leflat, A., Lefrançois, J., Lefévre, R., Lemaitre, F., Cid, E. Lemos, Leroy, O., Lesiak, T., Leverington, B., Li, T., Li, Y., Li, Z., Likhomanenko, T., Lindner, R., Lionetto, F., Liu, X., Loh, D., Longstaff, I., Lopes, J. H., Lucchesi, D., Martinez, M. Lucio, Luo, H., Lupato, A., Luppi, E., Lupton, O., Lusiani, A., Lyu, X., Machefert, F., Maciuc, F., Maev, O., Maguire, K., Malde, S., Malinin, A., Maltsev, T., Manca, G., Mancinelli, G., Manning, P., Maratas, J., Marchand, J. F., Marconi, U., Benito, C. Marin, Marinangeli, M., Marino, P., Marks, J., Martellotti, G., Martin, M., Martinelli, M., Santos, D. Martinez, Vidal, F. Martinez, Tostes, D. Martins, Massacrier, L. M., Massafferri, A., Matev, R., Mathad, A., Mathe, Z., Matteuzzi, C., Mauri, A., Maurice, E., Maurin, B., Mazurov, A., McCann, M., McNab, A., McNulty, R., Meadows, B., Meier, F., Melnychuk, D., Merk, M., Merli, A., Michielin, E., Milanes, D. A., Minard, M. -N., Mitzel, D. S., Mogini, A., Rodriguez, J. Molina, Monroy, I. A., Monteil, S., Morandin, M., Morello, M. J., Morgunova, O., Moron, J., Morris, A. B., Mountain, R., Muheim, F., Mulder, M., Mussini, M., Müller, D., Müller, J., Müller, K., Müller, V., Naik, P., Nakada, T., Nandakumar, R., Nandi, A., Nasteva, I., Needham, M., Neri, N., Neubert, S., Neufeld, N., Neuner, M., Nguyen, T. D., Nguyen-Mau, C., Nieswand, S., Niet, R., Nikitin, N., Nikodem, T., Nogay, A., Novoselov, A., O'Hanlon, D. P., Oblakowska-Mucha, A., Obraztsov, V., Ogilvy, S., Oldeman, R., Onderwater, C. J. G., Goicochea, J. M. Otalora, Owen, P., Oyanguren, A., Pais, P. R., Palano, A., Palutan, M., Papanestis, A., Pappagallo, M., Pappalardo, L. L., Pappenheimer, C., Parker, W., Parkes, C., Passaleva, G., Pastore, A., Patel, M., Patrignani, C., Pearce, A., Pellegrino, A., Penso, G., Altarelli, M. Pepe, Perazzini, S., Perret, P., Pescatore, L., Petridis, K., Petrolini, A., Petrov, A., Petruzzo, M., Olloqui, E. Picatoste, Pietrzyk, B., Pikies, M., Pinci, D., Pistone, A., Piucci, A., Placinta, V., Playfer, S., Casasus, M. Plo, Poikela, T., Polci, F., Lener, M. Poli, Poluektov, A., Polyakov, I., Polycarpo, E., Pomery, G. J., Ponce, S., Popov, A., Popov, D., Popovici, B., Poslavskii, S., Potterat, C., Price, E., Prisciandaro, J., Prouve, C., Pugatch, V., Navarro, A. Puig, Punzi, G., Qian, C., Qian, W., Quagliani, R., Rachwal, B., Rademacker, J. H., Rama, M., Pernas, M. Ramos, Rangel, M. S., Raniuk, I., Ratnikov, F., Raven, G., Redi, F., Reichert, S., Reis, A. C. dos, Alepuz, C. Remon, Renaudin, V., Ricciardi, S., Richards, S., Rihl, M., Rinnert, K., Molina, V. Rives, Robbe, P., Rodrigues, A. B., Rodrigues, E., Lopez, J. A. Rodriguez, Perez, P. Rodriguez, Rogozhnikov, A., Roiser, S., Rollings, A., Romanovskiy, V., Vidal, A. Romero, Ronayne, J. W., Rotondo, M., Rudolph, M. S., Ruf, T., Valls, P. Ruiz, Silva, J. J. Saborido, Sadykhov, E., Sagidova, N., Saitta, B., Guimaraes, V. Salustino, Gonzalo, D. Sanchez, Mayordomo, C. Sanchez, Sedes, B. Sanmartin, Santacesaria, R., Rios, C. Santamarina, Santimaria, M., Santovetti, E., Sarti, A., Satriano, C., Satta, A., Saunders, D. M., Savrina, D., Schael, S., Schellenberg, M., Schiller, M., Schindler, H., Schlupp, M., Schmelling, M., Schmelzer, T., Schmidt, B., Schneider, O., Schopper, A., Schreiner, H. F., Schubert, K., Schubiger, M., Schune, M. -H., Schwemmer, R., Sciascia, B., Sciubba, A., Semennikov, A., Sergi, A., Serra, N., Serrano, J., Sestini, L., Seyfert, P., Shapkin, M., Shapoval, I., Shcheglov, Y., Shears, T., Shekhtman, L., Shevchenko, V., Siddi, B. G., Coutinho, R. Silva, de Oliveira, L. Silva, Simi, G., Simone, S., Sirendi, M., Skidmore, N., Skwarnicki, T., Smith, E., Smith, I. T., Smith, J., Smith, M., Lavra, l. Soares, Sokoloff, M. D., Soler, F. J. P., De Paula, B. Souza, Spaan, B., Spradlin, P., Sridharan, S., Stagni, F., Stahl, M., Stahl, S., Stefko, P., Stefkova, S., Steinkamp, O., Stemmle, S., Stenyakin, O., Stevens, H., Stoica, S., Stone, S., Storaci, B., Stracka, S., Stramaglia, M. E., Straticiuc, M., Straumann, U., Sun, L., Sutcliffe, W., Swientek, K., Syropoulos, V., Szczekowski, M., Szumlak, T., T'Jampens, S., Tayduganov, A., Tekampe, T., Tellarini, G., Teubert, F., Thomas, E., van Tilburg, J., Tilley, M. J., Tisserand, V., Tobin, M., Tolk, S., Tomassetti, L., Tonelli, D., Topp-Joergensen, S., Toriello, F., Aoude, R. Tourinho Jadallah, Tournefier, E., Tourneur, S., Trabelsi, K., Traill, M., Tran, M. T., Tresch, M., Trisovic, A., Tsaregorodtsev, A., Tsopelas, P., Tully, A., Tuning, N., Ukleja, A., Ustyuzhanin, A., Uwer, U., Vacca, C., Vagnoni, V., Valassi, A., Valat, S., Valenti, G., Gomez, R. Vazquez, Regueiro, P. Vazquez, Vecchi, S., van Veghel, M., Velthuis, J. J., Veltri, M., Veneziano, G., Venkateswaran, A., Verlage, T. A., Vernet, M., Vesterinen, M., Barbosa, J. V. Viana, Viaud, B., Vieira, D., Diaz, M. Vieites, Viemann, H., Vilasis-Cardona, X., Vitti, M., Volkov, V., Vollhardt, A., Voneki, B., Vorobyev, A., Vorobyev, V., Voß, C., de Vries, J. A., Sierra, C. Vázquez, Waldi, R., Wallace, C., Wallace, R., Walsh, J., Wang, J., Ward, D. R., Wark, H. M., Watson, N. K., Websdale, D., Weiden, A., Whitehead, M., Wicht, J., Wilkinson, G., Wilkinson, M., Williams, M., Williams, M. P., Williams, T., Wilson, F. F., Wimberley, J., Winn, M. A., Wishahi, J., Wislicki, W., Witek, M., Wormser, G., Wotton, S. A., Wraight, K., Wyllie, K., Xie, Y., Xing, Z., Xu, Z., Yang, Z., Yao, Y., Yin, H., Yu, J., Yuan, X., Yushchenko, O., Zarebski, K. A., Zavertyaev, M., Zhang, L., Zhang, Y., Zhelezov, A., Zheng, Y., Zhu, X., Zhukov, V., and Zucchelli, S.

Subjects
High Energy Physics - Experiment
Abstract

The $\Xi_c^+ K^-$ mass spectrum is studied with a sample of $pp$ collision data corresponding to an integrated luminosity of 3.3 fb$^{-1}$, collected by the LHCb experiment. The $\Xi_c^+$ is reconstructed in the decay mode $p K^- \pi^+$. Five new, narrow excited $\Omega_c^0$ states are observed: the $\Omega_c(3000)^0$, $\Omega_c(3050)^0$, $\Omega_c(3066)^0$, $\Omega_c(3090)^0$, and $\Omega_c(3119)^0$. Measurements of their masses and widths are reported., Comment: 14 pages, 3 figures. All figures and tables, along with any supplementary material and additional information, are available at https://lhcbproject.web.cern.ch/lhcbproject/Publications/LHCbProjectPublic/LHCb-PAPER-2017-002.html

Published
2017
Full Text
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38. Search for the decays $B_s^0\to\tau^+\tau^-$ and $B^0\to\tau^+\tau^-$

Author

LHCb collaboration, Aaij, R., Adeva, B., Adinolfi, M., Ajaltouni, Z., Akar, S., Albrecht, J., Alessio, F., Alexander, M., Ali, S., Alkhazov, G., Cartelle, P. Alvarez, Alves Jr, A. A., Amato, S., Amerio, S., Amhis, Y., An, L., Anderlini, L., Andreassi, G., Andreotti, M., Andrews, J. E., Appleby, R. B., Archilli, F., d'Argent, P., Romeu, J. Arnau, Artamonov, A., Artuso, M., Aslanides, E., Auriemma, G., Baalouch, M., Babuschkin, I., Bachmann, S., Back, J. J., Badalov, A., Baesso, C., Baker, S., Balagura, V., Baldini, W., Baranov, A., Barlow, R. J., Barschel, C., Barsuk, S., Barter, W., Baryshnikov, F., Baszczyk, M., Batozskaya, V., Batsukh, B., Battista, V., Bay, A., Beaucourt, L., Beddow, J., Bedeschi, F., Bediaga, I., Beiter, A., Bel, L. J., Bellee, V., Belloli, N., Belous, K., Belyaev, I., Ben-Haim, E., Bencivenni, G., Benson, S., Beranek, S., Berezhnoy, A., Bernet, R., Bertolin, A., Betancourt, C., Betti, F., Bettler, M. -O., van Beuzekom, M., Bezshyiko, Ia., Bifani, S., Billoir, P., Birnkraut, A., Bitadze, A., Bizzeti, A., Blake, T., Blanc, F., Blouw, J., Blusk, S., Bocci, V., Boettcher, T., Bondar, A., Bondar, N., Bonivento, W., Bordyuzhin, I., Borgheresi, A., Borghi, S., Borisyak, M., Borsato, M., Bossu, F., Boubdir, M., Bowcock, T. J. V., Bowen, E., Bozzi, C., Braun, S., Britton, T., Brodzicka, J., Buchanan, E., Burr, C., Bursche, A., Buytaert, J., Cadeddu, S., Calabrese, R., Calvi, M., Gomez, M. Calvo, Camboni, A., Campana, P., Perez, D. H. Campora, Capriotti, L., Carbone, A., Carboni, G., Cardinale, R., Cardini, A., Carniti, P., Carson, L., Akiba, K. Carvalho, Casse, G., Cassina, L., Garcia, L. Castillo, Cattaneo, M., Cavallero, G., Cenci, R., Chamont, D., Charles, M., Charpentier, Ph., Chatzikonstantinidis, G., Chefdeville, M., Chen, S., Cheung, S. -F., Chobanova, V., Chrzaszcz, M., Chubykin, A., Vidal, X. Cid, Ciezarek, G., Clarke, P. E. L., Clemencic, M., Cliff, H. V., Closier, J., Coco, V., Cogan, J., Cogneras, E., Cogoni, V., Cojocariu, L., Collins, P., Comerma-Montells, A., Contu, A., Cook, A., Coombs, G., Coquereau, S., Corti, G., Corvo, M., Sobral, C. M. Costa, Couturier, B., Cowan, G. A., Craik, D. C., Crocombe, A., Torres, M. Cruz, Cunliffe, S., Currie, R., D'Ambrosio, C., Marinho, F. Da Cunha, Dall'Occo, E., Dalseno, J., David, P. N. Y., Davis, A., De Bruyn, K., De Capua, S., De Cian, M., De Miranda, J. M., De Paula, L., De Serio, M., De Simone, P., Dean, C. T., Decamp, D., Deckenhoff, M., Del Buono, L., Dembinski, H. -P., Demmer, M., Dendek, A., Derkach, D., Deschamps, O., Dettori, F., Dey, B., Di Canto, A., Di Nezza, P., Dijkstra, H., Dordei, F., Dorigo, M., Suárez, A. Dosil, Dovbnya, A., Dreimanis, K., Dufour, L., Dujany, G., Dungs, K., Durante, P., Dzhelyadin, R., Dziewiecki, M., Dziurda, A., Dzyuba, A., Déléage, N., Easo, S., Ebert, M., Egede, U., Egorychev, V., Eidelman, S., Eisenhardt, S., Eitschberger, U., Ekelhof, R., Eklund, L., Ely, S., Esen, S., Evans, H. M., Evans, T., Falabella, A., Farley, N., Farry, S., Fay, R., Fazzini, D., Ferguson, D., Fernandez, G., Prieto, A. Fernandez, Ferrari, F., Rodrigues, F. Ferreira, Ferro-Luzzi, M., Filippov, S., Fini, R. A., Fiore, M., Fiorini, M., Firlej, M., Fitzpatrick, C., Fiutowski, T., Fleuret, F., Fohl, K., Fontana, M., Fontanelli, F., Forshaw, D. C., Forty, R., Lima, V. Franco, Frank, M., Frei, C., Fu, J., Funk, W., Furfaro, E., Färber, C., Torreira, A. Gallas, Galli, D., Gallorini, S., Gambetta, S., Gandelman, M., Gandini, P., Gao, Y., Martin, L. M. Garcia, Pardiñas, J. García, Tico, J. Garra, Garrido, L., Garsed, P. J., Gascon, D., Gaspar, C., Gavardi, L., Gazzoni, G., Gerick, D., Gersabeck, E., Gersabeck, M., Gershon, T., Ghez, Ph., Gianì, S., Gibson, V., Girard, O. G., Giubega, L., Gizdov, K., Gligorov, V. V., Golubkov, D., Golutvin, A., Gomes, A., Gorelov, I. V., Gotti, C., Govorkova, E., Diaz, R. Graciani, Cardoso, L. A. Granado, Graugés, E., Graverini, E., Graziani, G., Grecu, A., Greim, R., Griffith, P., Grillo, L., Cazon, B. R. Gruberg, Grünberg, O., Gushchin, E., Guz, Yu., Gys, T., Göbel, C., Hadavizadeh, T., Hadjivasiliou, C., Haefeli, G., Haen, C., Haines, S. C., Hamilton, B., Han, X., Hansmann-Menzemer, S., Harnew, N., Harnew, S. T., Harrison, J., Hatch, M., He, J., Head, T., Heister, A., Hennessy, K., Henrard, P., Henry, L., van Herwijnen, E., Heß, M., Hicheur, A., Hill, D., Hombach, C., Hopchev, H., Huard, Z. -C., Hulsbergen, W., Humair, T., Hushchyn, M., Hutchcroft, D., Idzik, M., Ilten, P., Jacobsson, R., Jalocha, J., Jans, E., Jawahery, A., Jiang, F., John, M., Johnson, D., Jones, C. R., Joram, C., Jost, B., Jurik, N., Kandybei, S., Karacson, M., Kariuki, J. M., Karodia, S., Kecke, M., Kelsey, M., Kenzie, M., Ketel, T., Khairullin, E., Khanji, B., Khurewathanakul, C., Kirn, T., Klaver, S., Klimaszewski, K., Klimkovich, T., Koliiev, S., Kolpin, M., Komarov, I., Kopecna, R., Koppenburg, P., Kosmyntseva, A., Kotriakhova, S., Kozachuk, A., Kozeiha, M., Kravchuk, L., Kreps, M., Krokovny, P., Kruse, F., Krzemien, W., Kucewicz, W., Kucharczyk, M., Kudryavtsev, V., Kuonen, A. K., Kurek, K., Kvaratskheliya, T., Lacarrere, D., Lafferty, G., Lai, A., Lanfranchi, G., Langenbruch, C., Latham, T., Lazzeroni, C., Gac, R. Le, van Leerdam, J., Leflat, A., Lefrançois, J., Lefèvre, R., Lemaitre, F., Cid, E. Lemos, Leroy, O., Lesiak, T., Leverington, B., Li, T., Li, Y., Li, Z., Likhomanenko, T., Lindner, R., Lionetto, F., Liu, X., Loh, D., Longstaff, I., Lopes, J. H., Lucchesi, D., Martinez, M. Lucio, Luo, H., Lupato, A., Luppi, E., Lupton, O., Lusiani, A., Lyu, X., Machefert, F., Maciuc, F., Maev, O., Maguire, K., Malde, S., Malinin, A., Maltsev, T., Manca, G., Mancinelli, G., Manning, P., Maratas, J., Marchand, J. F., Marconi, U., Benito, C. Marin, Marinangeli, M., Marino, P., Marks, J., Martellotti, G., Martin, M., Martinelli, M., Santos, D. Martinez, Vidal, F. Martinez, Tostes, D. Martins, Massacrier, L. M., Massafferri, A., Matev, R., Mathad, A., Mathe, Z., Matteuzzi, C., Mauri, A., Maurice, E., Maurin, B., Mazurov, A., McCann, M., McNab, A., McNulty, R., Meadows, B., Meier, F., Melnychuk, D., Merk, M., Merli, A., Michielin, E., Milanes, D. A., Minard, M. -N., Mitzel, D. S., Mogini, A., Rodriguez, J. Molina, Monroy, I. A., Monteil, S., Morandin, M., Mordà, A., Morello, M. J., Morgunova, O., Moron, J., Morris, A. B., Mountain, R., Muheim, F., Mulder, M., Mussini, M., Müller, D., Müller, J., Müller, K., Müller, V., Naik, P., Nakada, T., Nandakumar, R., Nandi, A., Nasteva, I., Needham, M., Neri, N., Neubert, S., Neufeld, N., Neuner, M., Nguyen, T. D., Nguyen-Mau, C., Nieswand, S., Niet, R., Nikitin, N., Nikodem, T., Nogay, A., Novoselov, A., O'Hanlon, D. P., Oblakowska-Mucha, A., Obraztsov, V., Ogilvy, S., Oldeman, R., Onderwater, C. J. G., Ossowska, A., Goicochea, J. M. Otalora, Owen, P., Oyanguren, A., Pais, P. R., Palano, A., Palutan, M., Papanestis, A., Pappagallo, M., Pappalardo, L. L., Pappenheimer, C., Parker, W., Parkes, C., Passaleva, G., Pastore, A., Patel, M., Patrignani, C., Pearce, A., Pellegrino, A., Penso, G., Altarelli, M. Pepe, Perazzini, S., Perret, P., Pescatore, L., Petridis, K., Petrolini, A., Petrov, A., Petruzzo, M., Olloqui, E. Picatoste, Pietrzyk, B., Pikies, M., Pinci, D., Pistone, A., Piucci, A., Placinta, V., Playfer, S., Casasus, M. Plo, Poikela, T., Polci, F., Lener, M Poli, Poluektov, A., Polyakov, I., Polycarpo, E., Pomery, G. J., Ponce, S., Popov, A., Popov, D., Popovici, B., Poslavskii, S., Potterat, C., Price, E., Prisciandaro, J., Prouve, C., Pugatch, V., Navarro, A. Puig, Punzi, G., Qian, C., Qian, W., Quagliani, R., Rachwal, B., Rademacker, J. H., Rama, M., Pernas, M. Ramos, Rangel, M. S., Raniuk, I., Ratnikov, F., Raven, G., Redi, F., Reichert, S., Reis, A. C. dos, Alepuz, C. Remon, Renaudin, V., Ricciardi, S., Richards, S., Rihl, M., Rinnert, K., Molina, V. Rives, Robbe, P., Rodrigues, A. B., Rodrigues, E., Lopez, J. A. Rodriguez, Perez, P. Rodriguez, Rogozhnikov, A., Roiser, S., Rollings, A., Romanovskiy, V., Vidal, A. Romero, Ronayne, J. W., Rotondo, M., Rudolph, M. S., Ruf, T., Valls, P. Ruiz, Silva, J. J. Saborido, Sadykhov, E., Sagidova, N., Saitta, B., Guimaraes, V. Salustino, Gonzalo, D. Sanchez, Mayordomo, C. Sanchez, Sedes, B. Sanmartin, Santacesaria, R., Rios, C. Santamarina, Santimaria, M., Santovetti, E., Sarti, A., Satriano, C., Satta, A., Saunders, D. M., Savrina, D., Schael, S., Schellenberg, M., Schiller, M., Schindler, H., Schlupp, M., Schmelling, M., Schmelzer, T., Schmidt, B., Schneider, O., Schopper, A., Schreiner, H. 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J., Tisserand, V., Tobin, M., Tolk, S., Tomassetti, L., Tonelli, D., Topp-Joergensen, S., Toriello, F., Aoude, R. Tourinho Jadallah, Tournefier, E., Tourneur, S., Trabelsi, K., Traill, M., Tran, M. T., Tresch, M., Trisovic, A., Tsaregorodtsev, A., Tsopelas, P., Tully, A., Tuning, N., Ukleja, A., Ustyuzhanin, A., Uwer, U., Vacca, C., Vagnoni, V., Valassi, A., Valat, S., Valenti, G., Gomez, R. Vazquez, Regueiro, P. Vazquez, Vecchi, S., van Veghel, M., Velthuis, J. J., Veltri, M., Veneziano, G., Venkateswaran, A., Verlage, T. A., Vernet, M., Vesterinen, M., Barbosa, J. V. Viana, Viaud, B., Vieira, D., Diaz, M. Vieites, Viemann, H., Vilasis-Cardona, X., Vitti, M., Volkov, V., Vollhardt, A., Voneki, B., Vorobyev, A., Vorobyev, V., Voß, C., de Vries, J. A., Sierra, C. Vázquez, Waldi, R., Wallace, C., Wallace, R., Walsh, J., Wang, J., Ward, D. R., Wark, H. M., Watson, N. K., Websdale, D., Weiden, A., Whitehead, M., Wicht, J., Wilkinson, G., Wilkinson, M., Williams, M., Williams, M. P., Williams, T., Wilson, F. F., Wimberley, J., Winn, M. A., Wishahi, J., Wislicki, W., Witek, M., Wormser, G., Wotton, S. A., Wraight, K., Wyllie, K., Xie, Y., Xing, Z., Xu, Z., Yang, Z., Yang, Z, Yao, Y., Yin, H., Yu, J., Yuan, X., Yushchenko, O., Zarebski, K. A., Zavertyaev, M., Zhang, L., Zhang, Y., Zhelezov, A., Zheng, Y., Zhu, X., Zhukov, V., and Zucchelli, S.

Subjects
High Energy Physics - Experiment
Abstract

A search for the rare decays $B_s^0\to\tau^+\tau^-$ and $B^0\to\tau^+\tau^-$ is performed using proton--proton collision data collected with the LHCb detector. The data sample corresponds to an integrated luminosity of 3fb$^{-1}$ collected in 2011 and 2012. The $\tau$ leptons are reconstructed through the decay $\tau^-\to\pi^-\pi^+\pi^-\nu_{\tau}$. Assuming no contribution from $B^0\to\tau^+\tau^-$ decays, an upper limit is set on the branching fraction $\mathcal{B}(B_s^0\to\tau^+\tau^-) < 6.8\times 10^{-3}$ at 95% confidence level. If instead no contribution from $B_s^0\to\tau^+\tau^-$ decays is assumed, the limit is $\mathcal{B}(B^0\to\tau^+\tau^-)< 2.1 \times 10^{-3}$ at 95% confidence level. These results correspond to the first direct limit on $\mathcal{B}(B_s^0\to\tau^+\tau^-)$ and the world's best limit on $\mathcal{B}(B^0\to\tau^+\tau^-)$., Comment: 21 pages, 10 figures. All figures and tables, along with any supplementary material and additional information, are available at https://lhcbproject.web.cern.ch/lhcbproject/Publications/LHCbProjectPublic/LHCb-PAPER-2017-003.html

Published
2017
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39. Allergic Bronchopulmonary Mycosis with Eosinophilia Caused by Schizophyllum Infection.

Author

Yuan, Xin H., Chen, Qian C., Yan Wang, Hao, Jian H., Guo, Ai J., Zhang, Jia B., Fu, Ai S., and Ge, Yan L.

Subjects
MYCOSES, EOSINOPHILIA, COMPUTED tomography, NUCLEOTIDE sequencing, INFECTION
Abstract

Background: As an opportunistic pathogenic fungus, Schizophyllum has been rarely reported to infect humans. By reporting a case of definite diagnosis of Schizophyllum infection, we aim to improve clinicians' understanding of this bacterium. Methods: By reporting a case with cough and sputum as the main manifestations, after empirical anti-infective chest CT suggesting a more progressive inflammatory lesion and a mass-like lesion in the paratracheal area of the main airways, a diagnosis of Schizophyllum infection was finally made by bronchoscopy with the delivery of metagenomic next-generation sequencing (mNGS). Results: The patient was finally diagnosed with rare Schizophyllum infection. After antifungal treatment, the symptoms improved, and the patient was discharged. Conclusions: Although Schizophyllum is a rare fungal infection, it should be taken seriously in patients with diabetes or who are immunocompromised. At the same time, mNGS plays a key role in the detection of rare and emerging pathogens, which is worthy of clinical interest. [ABSTRACT FROM AUTHOR]

Published
2024
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41. Clinicopathological Features and Prognostic Outcomes of Papillary Renal Cell Carcinoma

Author

Qian X, Wan J, Qian C, and Zhang J

Subjects
papillary renal cell carcinoma, clinical features, pathological features, prognosis, Medicine (General), R5-920
Abstract

Xiaoyuan Qian,1 Junlai Wan,2 Can Qian,3 Jiaqiao Zhang1 1Department of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People’s Republic of China; 2Department of Orthopedics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People’s Republic of China; 3Department of Traditional Chinese Medicine and Rheumatology, Southwest Hospital, Army Military Medical University, Chongqing, People’s Republic of ChinaCorrespondence: Jiaqiao ZhangDepartment of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1095 Jiefang Avenue, Wuhan, Hubei Province, People’s Republic of ChinaEmail medzjq@163.comPurpose: Although papillary renal cell carcinoma (pRCC) is the second common renal malignant tumor, the current understanding of pRCC is poor. This study aims to explore the clinicopathological features and prognostic factors of pRCC.Methods: From August 2007 and August 2017, 87 patients diagnosed with pRCC by postoperative pathology were enrolled. The clinicopathological features between type1 pRCC and type2 pRCC were compared by Chi-square test, Fisher’s exact test, or t-test. The Kaplan–Meier method was performed to estimate progression-free survival (PFS). Univariate and multivariate cox regression models were used to verify the prognostic factors.Results: Of the 87 cases, the median tumor diameter was 5.3cm. Twenty-nine patients were diagnosed with type1 pRCC and 58 patients with type2 pRCC. According pathological stage, 59 (67.8%) cases were in pT1 stage, 19 (21.8%) in pT2 stage, and 9 (10.4%) in pT3 stage. WHO/ISUP pathological grade revealed that 56 (64.4%) patients were in grade I, 17 (19.5%) in grade II, 7 (8.05%) in grade III, and 7 (8.05%) in grade IV. The median follow-up time was 57.0months, and the 1-, 3-year PFS was 95.4%, and 80.8%, respectively. For type1 and type2 pRCC, 3-years PFS was 93.0% and 74.9%, respectively. Survival of type1 pRCC was better than that of type2 (P= 0.027). Patients with late pT stage, lymph node metastasis, distant metastasis, high pathological grade, and large size exhibited worse survival. pTNM stage, pathological grade, and tumor types were potentially related to prognosis for PFS. However, an independent prognostic factor affecting PFS was not found in multivariate regression models. For patients with the pT1 stage, nephron-sparing surgery (NSS) and radical nephrectomy (RN) did not affect the PFS, ignoring tumor types (P=0.45).Conclusion: Type2 pRCC is more than type1 pRCC and has an advanced TNM stage and a higher pathological grade. For patients with pRCC with the pT1 stage, the outcome of NSS is not inferior to that of RN.Keywords: papillary renal cell carcinoma, clinical features, pathological features, prognosis

Published
2021

42. The Value of Electrophoresis and Chemical Detection in the Diagnosis of Hypertensive Nephropathy

Author

Yang X, Fan J, Wu Y, Lin J, Qian C, and Li J

Subjects
hypertension, kidney damage, sodium dodecyl sulfate and agarose glycoprotein electrophoresis, urinary malb, β2-mg, serum cys c, rbp, bun, pathological proteinuria, Medicine (General), R5-920
Abstract

Xin Yang, Jun Fan, Yingzhi Wu, Jie Lin, Chongling Qian, Jing Li Department of Laboratory Medicine, Kongjiang Hospital, Shanghai, 200093, People’s Republic of ChinaCorrespondence: Xin YangDepartment of Laboratory Medicine, Kongjiang Hospital, No. 480 Shuangyang Road, Yangpu District, Shanghai, 200093, People’s Republic of ChinaTel/Fax +86 2165434597 Ext8136Email xinyang_2021@21cn.comObjective: To investigate the clinical value of sodium dodecyl sulfate–agarose gel electrophoresis (SDS-AGE) of urinary proteins combined with several biochemical indices in the detection of hypertensive nephropathy.Material and Methods: In this study, 210 patients with hypertensive nephropathy were recruited as the kidney disease group, 100 patients with simple hypertension were recruited as the hypertension group, and another 100 healthy participants were recruited as the control group. We conducted SDS-AGE of urinary proteins and urinary microalbumin (mAlb), β2-microglobulin (β2-MG), retinol-binding protein (RBP), serum cystatin C (CysC), blood urea nitrogen (BUN), and creatinine tests at the same time.Results: The results showed that the urinary mAlb levels in the hypertension group and hypertensive nephropathy group were higher than in the control group (P< 0.05). The biochemical index detection results showed that β2-MG, RBP, serum CysC, BUN, and creatinine were higher in the hypertensive nephropathy group than in the control group and hypertension group (P< 0.05). The total positive rates of urinary protein SDS-AGE and urinary mAlb, urinary β2-MG, blood CysC, blood RBP, BUN, and creatinine in 210 patients with essential hypertension nephropathy were 100.0%, 98.6%, 32.8%, 98.6%, 21.0%, 2.0%, and 20%, respectively. The total positive rate of SDS-AGE urinary protein was higher than that of the other six biochemical indices.Conclusion: SDS-AGE of urinary proteins, combined with urinary mAlb, β2-MG, serum CysC, RBP, BUN, and creatinine, could improve the detection sensitivity, which would be helpful for the early and accurate diagnosis of kidney damage.Keywords: hypertension, kidney damage, sodium dodecyl sulfate–agarose gel electrophoresis, urinary mAlb, β2-MG, serum CysC, RBP, BUN, pathological proteinuria

Published
2021

44. Why were the 2015/2016 and 1997/1998 extreme El Niños different?

Author

Paek, H, Yu, JY, and Qian, C

Subjects
Meteorology & Atmospheric Sciences
Abstract

Subtle but important differences are identified between the 1997/1998 and 2015/2016 extreme El Niños that reflect fundamental differences in their underlying dynamics. The 1997/1998 event is found to evolve following the eastern Pacific El Niño dynamics that relies on basin-wide thermocline variations, whereas the 2015/2016 event involves additionally the central Pacific (CP) El Niño dynamics that depends on subtropical forcing. The stronger CP dynamics during the 2015/2016 event resulted in its sea surface temperature (SST) anomalies lingering around the International Date Line during the decaying phase, which is in contrast to the retreat of the anomalies toward the South American Coast during the decaying phase of the 1997/1998 event. The different SST evolution excited different wave trains resulting in the western U.S. not receiving the same above-normal rainfall during the 2015/2016 El Niño as it did during the 1997/1998 El Niño. Ensemble model experiments are conducted to confirm the different climate impacts of the two El Niños.

Published
2017

45. Molecular and Functional Characterization of a Novel Plasmid-Borne blaNDM-Like Gene, blaAFM-1, in a Clinical Strain of Aeromonas hydrophila

Author

Lin X, Lu J, Qian C, Lin H, Li Q, Zhang X, Liu H, Sun Z, Zhou D, Lu W, Zhu M, Zhang H, Xu T, Li K, Bao Q, and Lin L

Subjects
aeromonas hydrophila, whole-genome sequencing, plasmid-encoded resistance genes, blaafm-1, novel iscr19-like elements, Infectious and parasitic diseases, RC109-216
Abstract

Xi Lin,1,2 Junwan Lu,1,2 Changrui Qian,1,2 Hailong Lin,1– 3 Qiaoling Li,1– 3 Xueya Zhang,1– 3 Hongmao Liu,1– 3 Zhewei Sun,1,2 Danying Zhou,1,2 Wei Lu,1,2 Mei Zhu,4 Hailin Zhang,2,3 Teng Xu,5 Kewei Li,1,2 Qiyu Bao,1– 3 Li Lin2,3 1Key Laboratory of Medical Genetics of Zhejiang Province, Key Laboratory of Laboratory Medicine, Ministry of Education of China, School of Laboratory Medicine and Life Sciences, Wenzhou Medical University, Wenzhou, 325035, People’s Republic of China; 2Institute of Biomedical Informatics, School of Laboratory Medicine and Life Sciences, Wenzhou Medical University, Wenzhou, 325035, People’s Republic of China; 3The Second Affiliated Hospital and Children’s Hospital, Wenzhou Medical University, Wenzhou, 325027, People’s Republic of China; 4Department of Clinical Laboratory, Zhejiang Hospital, Hangzhou, Zhejiang, 310013, People’s Republic of China; 5Institute of Translational Medicine, Baotou Central Hospital, Baotou, 014040, People’s Republic of ChinaCorrespondence: : Li LinThe Second Affiliated Hospital and Yuying Children’s Hospital, Wenzhou Medical University, Wenzhou, 325027, People’s Republic of ChinaTel +86-577-88002134Email linli97@126.comQiyu BaoInstitute of Biomedical Informatics, School of Laboratory Medicine and Life Sciences, Wenzhou Medical University, Wenzhou, 325035, People’s Republic of ChinaTel/Fax +86-577-86699398Email baoqy@genomics.cnPurpose: An increasing frequency of antibiotic resistance has been observed in both clinical and environmental Aeromonas hydrophila isolates in recent years. However, there are still very few in-depth studies regarding the role of plasmids in the antibiotic resistance of A. hydrophila. Hence, we investigated the molecular and functional characterization of a multidrug-resistant plasmid encoding an NDM-like metallo-β-lactamase, AFM-1, in the clinical A. hydrophila isolate SS332.Methods: The minimum inhibitory concentrations (MICs) of 24 antibiotics against A. hydrophila SS332 were measured by the agar dilution method. The genome of A. hydrophila SS332 was sequenced with PacBio and Illumina platforms. Six plasmid-borne antimicrobial resistance genes were chosen for cloning, including blaAFM-1, blaOXA-1, msr(E), mph(E), aac(6ʹ)-Ib10, and aph(3ʹ)-Ia. Phylogenetic analysis, amino acid sequence alignment, and comparative genomic analysis were performed to elucidate the active site requirements and genetic context of the blaAFM-1 gene.Results: A. hydrophila SS332 showed high levels of resistance to 15 antibiotics, especially those with MIC levels at or above 1024 μg/mL, including ampicillin, cefazolin, ceftriaxone, aztreonam, spectinomycin, and roxithromycin. Six plasmid-borne resistance genes from A. hydrophila were verified to be functional in E. coli DH5α. AFM-1 shared 86% amino acid identity with NDM-1 and showed resistance to ampicillin, cefazolin, cefoxitin, and ceftazidime. In addition, the blaAFM-1 gene was associated with three different novel ISCR19-like elements, designated ISCR19-1, ISCR19-2 and ∆ISCR19-3, which may be involved in the acquisition and mobilization of the blaAFM-1 gene.Conclusion: Our investigation showed that plasmid-borne resistance genes can contribute to antibiotic resistance in A. hydrophila SS332. A novel blaNDM-like gene, blaAFM-1, was verified to be functional and associated with novel ISCR19-like elements. This fact indicated the risk of spread of blaAFM-1 genes and ISCR19-like elements.Keywords: Aeromonas hydrophila, whole-genome sequencing, plasmid-borne resistance genes, blaAFM-1, ISCR19-like elements

Published
2021

46. The Value of Nutritional Status in the Prognostic Analysis of Patients with AIDS-Related Lymphoma

Author

Sun Y, Luo J, Qian C, Luo L, Xu M, Min H, and Cen Y

Subjects
aids-related lymphoma, body mass index, pre-albumin, prognostic factor, retrospective analysis, Infectious and parasitic diseases, RC109-216
Abstract

Yanbo Sun,1,* Jing Luo,2,* Chuan Qian,3,* Lan Luo,3 Manqi Xu,1 Haiyan Min,3 Yunyun Cen1 1Department of Gastrointestinal Surgery, The Second Affiliated Hospital of Kunming Medical University, Kunming, 650101, People’s Republic of China; 2Department of Gastrointestinal Surgery, The First People’s Hospital of Qujing, Qujing, 655000, People’s Republic of China; 3The Second Department of Infection, Yunnan Provincial Infectious Disease Hospital, Kunming, 650301, People’s Republic of China*These authors contributed equally to this workCorrespondence: Yunyun CenDepartment of Gastrointestinal Surgery, The Second Affiliated Hospital of Kunming Medical University, No. 374 of Yunnan-Burma Road, Kunming City, Yunnan Province, 650101, People’s Republic of ChinaTel +86-871-63402778Fax +86-871-65361017Email drcenyunyun@163.comHaiyan MinThe Second Department of Infection, Yunnan Provincial Infectious Disease Hospital, Shi’an Highway in Kunming, Kunming City, Kunming, Yunnan Province, 650301, People’s Republic of ChinaTel/Fax +86-871-68728053Email min_haiy23an@126.comObjective: Many studies have suggested that indexes of nutritional status, such as body mass index (BMI), serum albumin (ALB), serum pre-albumin (PA), and hemoglobin, may be used as risk factors for the prognosis of HIV or lymphoma. Therefore, this study aimed to retrospectively analyze and explore the value of nutritional status in the prognostic assessment of patients with AIDS-related lymphoma (ARL).Methods: In this retrospective study, the clinical data of 69 patients with ARL were collected. All patients had a definite diagnosis of non-Hodgkin lymphoma by pathological examination and met the requirements of the Hematopoietic and Lymphocytic Tissue Tumor Classification (2016) established by the World Health Organization. Patients who did not receive standard chemotherapy, those with incomplete medical records, and those with an unclear pathological diagnosis were excluded. The patients were divided into two groups (survival and death) according to the prognostic outcome, and their clinical characteristics and prognoses were discussed by relevant statistical methods.Results: During the three-year follow-up period, 20 (28.99%) patients died, and 49 (71.01%) survived. The one-year cumulative survival rate was 78.26%. A univariate analysis found that the prognosis was associated with the International Prognostic Index (IPI) score, BMI, ALB, PA, and CD4 T lymphocyte count. The Cox risk proportional regression analysis showed that the IPI score, BMI, and PA were the independent risk factors for survival; their combination had a greater ability to forecast the clinical outcome (area under the curve = 0.874, P < 0.001).Conclusion: In this study, at the time of the visit, the patients with ARL tended to be in the advanced stages of disease and, therefore, at high risk of mortality. Therefore, their nutritional status might be of great value to the prognostic assessment. The combination of BMI, PA, and IPI scores could be used for risk stratification and better screening of high-risk patients.Keywords: AIDS-related lymphoma, body mass index, pre-albumin, prognostic factor, retrospective analysis

Published
2021

47. Diagnostic Values of Epicardial Adipose Tissue Thickness with Right Common Carotid Artery Elasticity and Intima-Media Thickness for Middle-Aged and Elderly Patients with Coronary Heart Disease

Author

Qian C, Sun Y, and Jiang J

Subjects
ultrasound, coronary heart disease, epicardial adipose tissue, right common carotid artery elasticity, intima-media thickness, Medicine (General), R5-920
Abstract

Chengsi Qian1 *,* Yan Sun2 *,* Jun Jiang1 1Department of Cardiology, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, 310009, Zhejiang Province, People’s Republic of China; 2Department of Cardiology, Zhejiang Rongjun Hospital, Jiaxing, 314001, Zhejiang Province, People’s Republic of China*These authors contributed equally to this workCorrespondence: Jun Jiang Email leiyanci13712@163.comBackground: Coronary heart disease (CHD) is the most common cardiovascular disease which greatly threatens the health of middle-aged and elderly people.Objective: To explore the correlations of epicardial adipose tissue (EAT) thickness with right common carotid artery elasticity and intima-media thickness (IMT) in middle-aged and elderly patients with CHD by ultrasound.Methods: A total of 132 patients diagnosed with CHD by coronary angiography (CAG) from February 2019 to August 2020 were enrolled and divided into single-vessel disease group (n=38), double-vessel disease group (n=52), and three-vessel disease group (n=42), and 52 healthy subjects were selected as control group. Their general data, biochemical indices, EAT thickness, right common carotid artery elasticity indices, and IMT were compared. The correlations of EAT thickness with right common carotid artery elasticity indices and IMT were studied by Pearson’s analysis. The predictive values of EAT thickness and IMT for CHD were analyzed by receiver operating characteristic curves.Results: With increasing number of diseased branches, EAT thickness, stiffness parameters β (β), strain elastic modulus (Ep), pulse wave velocity β (PWV-β) and IMT increased, arterial compliance (AC) decreased (P< 0.05), but argumentation index (AI) did not change significantly. EAT thickness had significant positive correlations with β, Ep, PWV-β and IMT, negative correlation with AC, and no significant correlation with AI. The areas under the curves of EAT thickness and IMT for predicting CHD were 0.806 and 0.784, respectively.Conclusion: EAT thickness is significantly correlated with right common carotid artery elasticity and IMT in middle-aged and elderly patients with CHD, and EAT thickness and IMT have high predictive values. The three indices are crucial for CHD diagnosis.Keywords: ultrasound, coronary heart disease, epicardial adipose tissue, right common carotid artery elasticity, intima-media thickness

Published
2021

48. Risk Factors and Outcomes of Carbapenem-Resistant Enterobacteriaceae Infection After Liver Transplantation: A Retrospective Study in a Chinese Population

Author

Chen Y, Wang WL, Zhang W, Zhang YT, Tang SX, Wu PP, Zeng L, Qian C, and Liang TB

Subjects
carbapenem-resistant enterobacteriaceae, liver transplantation, infections, immunosuppression, mortality, risk factors, Infectious and parasitic diseases, RC109-216
Abstract

Ying Chen, Wei-li Wang, Wei Zhang, Yun-tao Zhang, Sa-xiao Tang, Ping-ping Wu, Lei Zeng, Chao Qian, Ting-bo Liang Key Laboratory of Combined Multi-Organ Transplantation, Ministry of Public Health, Division of Hepatobiliary and Pancreatic Surgery, Department of Surgery, First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310003, People’s Republic of ChinaCorrespondence: Ting-bo LiangDivision of Hepatobiliary and Pancreatic Surgery, Department of Surgery, First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310003, People’s Republic of ChinaTel +86-571-87236688Fax +86-571-87236739Email liangtingbo@zju.edu.cnBackground: There is an increasing prevalence of carbapenem-resistant Enterobacteriaceae (CRE) infection after liver transplantation (LT). Improved understanding of the risk factors and outcomes of CRE infections can help us to develop effective preventive strategies and even guide early treatment of high-risk LT patients.Methods: This was a retrospective study involving all Chinese adult patients who underwent LT between December 2017 and September 2019 in our center. We analyzed the possible risk factors and outcomes associated with CRE infections in the first 30 days post-LT.Results: A total of 387 patients underwent LT. Among them, 26 patients (6.7%) developed CRE infections within 30 days after transplantation. Patients with CRE infections had significantly lower 30-day and 180-day survival rates (80.8% vs 96.4%, p< 0.001; 51.5% vs 92.4%, p< 0.001). Multivariate analysis identified that intraoperative blood loss equal to or more than 1500 mL (odds ratio [OR], 3.666; 95% confidence interval [CI], 1.407– 9.550; p=0.008), CRE rectal carriage within 30 days post-LT (OR, 5.516; 95% CI, 2.113– 14.399; p=0.000), biliary complications (OR, 3.779; 95% CI, 1.033– 13.831; p=0.045) and renal replacement therapy for more than 3 days (OR, 3.762; 95% CI, 1.196– 11.833; p=0.023) were independent risk factors for CRE infections within 30 days post-LT.Conclusion: CRE infections within 30 days post-LT were associated with worse outcomes. Intraoperative blood loss equal to or more than 1500 mL, CRE rectal carriage within 30 days post-LT, biliary complications and renal replacement therapy for more than 3 days were independent risk factors of CRE infections after LT.Keywords: carbapenem-resistant Enterobacteriaceae, liver transplantation, infections, immunosuppression, mortality, risk factors

Published
2020

50. Reliability and Validity of THINC-it in Evaluating Cognitive Function of Patients with Bipolar Depression

Author

Zhang W, Zhu N, Lai J, Liu J, Ng CH, Chen J, Qian C, Du Y, Hu C, Hu J, Wang Z, Zhou H, Xu Y, Fang Y, Shi C, and Hu S

Subjects
bipolar depression (bd-d), major depressive depression (mdd), thinc-it, cognitive function, reliability, validity., Neurosciences. Biological psychiatry. Neuropsychiatry, RC321-571, Neurology. Diseases of the nervous system, RC346-429
Abstract

Weihua Zhang,1,2,* Na Zhu,3,* Jianbo Lai,1,4 Jingjing Liu,1,5 Chee H Ng,6 Jun Chen,3 Chao Qian,1,7 Yanli Du,1 Chanchan Hu,1,4 Jingkai Chen,1,4 Jianbo Hu,1,4 Zhong Wang,1,4 Hetong Zhou,1,4 Yi Xu,1,4 Yiru Fang,3 Chuan Shi,8– 11 Shaohua Hu1,4 1Department of Psychiatry, First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310003, People’s Republic of China; 2Department of Psychiatry, Taizhou Second People’s Hospital, Taizhou 317200, People’s Republic of China; 3Shanghai Mental Health Center, Shanghai Jiaotong University School of Medicine, Shanghai 200030, People’s Republic of China; 4The Key Laboratory of Mental Disorder Management of Zhejiang Province, Hangzhou 310003, People’s Republic of China; 5Department of Psychiatry, Wenzhou Kangning Hospital, Wenzhou 325000, People’s Republic of China; 6The Melbourne Clinic Department of Psychiatry, University of Melbourne, Melbourne, Victoria 3052, Australia; 7Department of Psychiatry, The Seventh Shaoxing People’s Hospital, Shaoxing 312000, People’s Republic of China; 8Department of Psychological Assesssment, Peking University Sixth Hospital, Beijing 100191, People’s Republic of China; 9Peking University Institute of Mental Health, Beijing 100191, People’s Republic of China; 10NHC Key Laboratory of Mental Health, Beijing 100191, People’s Republic of China; 11National Clinical Research Center for Mental Disorders, Beijing 100191, People’s Republic of China*These authors contributed equally to this workCorrespondence: Yiru FangShanghai Mental Health Center, Shanghai Jiaotong University School of Medicine, Shanghai 200030, People’s Republic of ChinaEmail yirufang@aliyun.comShaohua HuDepartment of Psychiatry, First Affiliated Hospital, Zhejiang University School of Medicine, The Key Laboratory of Mental Disorder Management of Zhejiang Province, 79 Qing Chun Road, Hangzhou 310003, People’s Republic of ChinaEmail dorhushaohua@zju.edu.cnPurpose: The THINC-integrated tool (THINC-it) as a brief screening tool can assesses cognitive impairment in patients with major depressive depression (MDD). Here, we aim to evaluate the reliability and validity of the THINC-it in a bipolar depression (BD-D) group in comparison with a healthy control (HC) group.Materials and Methods: Both groups were matched according to age, gender, years of education, and IQ. All participants completed the THINC-it test, including Spotter, Symbol Check, Codebreaker, Trails, and the Perceived Deficits Questionnaire for Depression-5-item (PDQ-5-D). The concurrent validity and internal consistency of the THINC-it test were analyzed, and 30 healthy controls were randomly sampled to retest THINC-it to verify the reliability of the THINC-it retest. The correlation between THINC-it and Hamilton Depression Scale (HAMD-17) and Sheehan Disability Scale (SDS) was also analyzed.Results: Fifty-eight patients with BD-D and 61 HCs were included for final analysis. There were significant mean difference (MD) standard errors (SE) between two groups in PDQ-5-D, Spotter and Codebreaker (all P< 0.01), Trails (P=0.015). There was no significant difference in Symbol Check (MD (SE)=− 0.01 (0.18), P=0.938; 95% CI=− 0.38 to 0.35). The Cronbach’s α of PDQ-5-D was 0.640. The intraclass correlation coefficient (ICC) was between 0.440 and 0.757. The highest concurrent validity was PDQ-5-D (r=0.812, P< 0.001). PDQ-5-D was positively correlated with HAMD-17 and SDS score (P< 0.01). The objective test had no significant correlation with HAMD-17 and SDS scores (P> 0.05).Conclusion: This study found that THINC-it can accurately present the cognitive impairment of patients with BD-D. It can be potentially applied in assessing the cognitive function of patients with BD-D although Symbol Check may not accurately reflect the level of cognitive function. The concurrent validity and retest reliability are lower than expected, we need to further increase the sample size to study.Keywords: bipolar depression, BD-D, major depressive depression, MDD, THINC-it, cognitive function, reliability, validity

Published
2020

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